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1: EVM15L as a direct radiator midbass/midrange? (10.27)
Posted by Neil on 2003-06-25, 16:32:27 (68.4.157.204)
Hi All, I'm thinking of using the EVM15L (old style, not newer 'Proline') in a 2-way + sub nearfield hifi system. Highs will be TAD2001 on Edgar 650Hz tractrix, crossed over at 800Hz or above. Any sug .......
2: evm15l (10.27)
Posted by gazzamongo on 2004-02-12, 10:43:17 (62.252.224.9)
still no fixed plan on cab for evm15l steve schell emailed me details of his 35hz triangular section corner horns which were very like the ones iv'e been modelling in mcbean, if i say so myself just r .......
3: Re: re evm15l's (9.98)
Posted by gazzamongo on 2004-01-25, 16:19:02 (62.252.224.9)
all set for liftoff then p.s how many db/w with evm15l....i've only got 15 per channel from that tiny little brit box (naim nait) .......
4: Electrovoice EVM15L (9.49)
Posted by specopsda on 2001-02-21, 13:27:51 (63.27.230.25)
Can anyone point me to the specifications (Thiele/Small) for the Electrovoice EVM15L woofer? The EV website does not list it. (Apparently out of production) Thanks in advance. .......
5: RE: Alternatives to EVM15L for Volvotreter midbass horn (9.24)
Posted by j_s on 2010-01-14, 01:23:50 (90.219.117.15)
15ND930 Qes:0.23 Vas:206l Fs:36Hz Qms:5.3 EVM15L Qes:0.25 Vas:245l Fs:43Hz Qms:4.96 Kappa pro 15 Qes:0.32 Vas:198l Fs:35Hz Qms:7.3 15NDL56 Qes:0.24 Vas:195l Fs:37Hz Qms:4.5 Hmmm, which one looks the b .......
6: EVM15L plus 100 hz Edgarhorn rolloff? (8.75)
Posted by floydandrews on 2007-04-24, 16:00:46 (69.109.173.183)
Does anyone know what would be the usable upper frequncey response of the combination of EVM15L speakers and Edgarhorn straight 100 herz horns? Is it higher than the predicted mass rolloff frequency? .......
7: Alternatives to EVM15L for Volvotreter midbass horn (8.40)
Posted by j_s on 2010-01-13, 07:16:31 (90.219.117.15)
I was thinking of building a pair of midbass horns similar to the 77Hz conical midbass horns by Volvotreter, but I am having trouble finding EVM15l drivers, can anyone suggest an alternative? The clos .......
8: Re: EVM15L plus 100 hz Edgarhorn rolloff? (8.03)
Posted by Bruce Edgar on 2007-04-24, 16:15:11 (24.24.213.69)
The 100 Hz horn/EVM15L combo will go up to 700 Hz or so, but it doesn't sound musical above 500 Hz. Also the 100Hz horn needs to be several inches above a floor boundary to have a good response. Bruce .......
9: Re: Whichone to prefer for Edgar System 100 bass unit: Electro Voice EVM12L or EVM15L (7.98)
Posted by Bruce Edgar on 2001-08-21, 23:30:37 (66.27.193.9)
Presently, I prefer the EVM15L over the 12L for the 100Hz horn. The 12" drivers have a peak at 200Hz on the 100Hz exp horn. If the 15L is not available, try the D-130A or the 515B. Bruce .......
10: Anyone compared EVM15L to Lambda TD15M in Bruce's horns? (7.92)
Posted by Neil on 2003-03-27, 22:27:29 (68.4.157.204)
Insites, comments, or recommendations please! The Lambda's are $179 till the 31st. After that, $299. I am trying to ascertain how much, if any, improvement there would be over the EVM15L in Bruce's 10 .......
11: What are the T/S for a EVM15L?? (nt) (6.98)
Posted by kappajoe on 2003-01-11, 20:14:29 (66.109.147.32)
Thanks .......
12: Sensitivity of EVM15L? (6.40)
Posted by Neil on 2003-03-27, 22:13:30 (68.4.157.204)
Thanks! .......
13: Edgar horn questions... (6.40)
Posted by kappajoe on 2003-01-05, 10:57:16 (66.109.147.26)
I am seriously considering building a pair of Edgar 100hz and 300hz horns. But I have a couple questions before I preceed. First on the 100hz horns. I know that Edgar recommands the EVM12L and I could .......
14: Re: Anyone know Le for EVM15L? (6.37)
Posted by pooge on 2003-06-09, 23:45:07 (209.249.181.46)
Thanks! Where is that database found? .......
15: Re: Anyone know Le for EVM15L? (6.27)
Posted by Horny on 2003-06-09, 19:25:34 (139.134.63.153)
According to the Drivers Ed database it's 1.24mH .......
16: ping bruce edgar (and freddyi) (6.14)
Posted by gazzamongo on 2004-07-09, 09:53:35 (80.0.33.9)
bruce , what is your recommendation for crossover orders on evm15l in straight horn and also jbl le5 in 300 hz horn (like the midhorn by the way. freddyi, i find first order great on the midhorn but l .......
17: Re: EVM15L plus 100 hz Edgarhorn rolloff? (6.14)
Posted by Doc Gaw on 2007-05-20, 10:14:27 (72.71.198.92)
How many inches? .......
18: Altec 210, 211 (6.08)
Posted by Gwen on 2013-07-24, 16:48:31 (77.181.242.245)
aw thanks a lot- I can't believe I did not think of the altec stuff. do you think I can load them with EVM15L? As I understand it, the horn loading will go down to about 60Hz (edit: probably rather 10 .......
19: RE: will a EVM15L cone kit drop into a SP15A? (6.06)
Posted by freddyi on 2012-09-02, 22:17:05 (75.109.224.112)
thanks Bill - I hate to throw it out .......
20: Re: edgarhorn midbass driver? (6.02)
Posted by djn on 2003-04-23, 06:39:41 (68.43.164.107)
Dr. Edger, were can I find an EVm15l? Is it a currently produced speaker? .......
21: Re: dr edgars 2 way................... (5.97)
Posted by LowFiRon on 2003-06-30, 19:21:29 (198.81.26.9)
650Hz and the woofers were EVM15L's. Yeah you said it had more punch, I agree. Ron .......
22: 40 to 300 Hz w/EVM15L plus/minus 0.5 dB (5.97)
Posted by Jeff on 2001-09-07, 21:26:53 (208.188.193.143)
Ronnie Bruce Edgar has several times recommended the EV EVM-15L so I plugged some T/S values into McBean's hornresponse program. In Melhuish's calculator use 400 cm^2 for the throat area, 36 Hz for fl .......
23: EVM15L or the JBL D130 (nt) Give them a try. (5.82)
Posted by kappajoe on 2003-02-11, 14:29:55 (66.109.147.40)
Won't get much below 100hz though kappajoe .......
24: Re: TDM15 (5.81)
Posted by Neil on 2003-10-11, 13:34:25 (68.4.157.204)
of course, there's the EVM15L, which looks very similar. Light cone, 102db/w. May try it in a 2-way direct radiator. Anyone tried it? Neil .......
25: Re: edgarhorn midbass driver? (5.77)
Posted by Bruce Edgar on 2003-04-22, 12:32:11 (66.75.177.221)
My all time favorite is the EVM15L. But of the current ones, the jbl m151 can also be used. I have never liked the Emminence models in any of my horns. .......
26: Whichone to prefer for Edgar System 100 bass unit: Electro Voice EVM12L or EVM15L (5.74)
Posted by volvotreter on 2001-08-20, 20:54:26 (194.77.88.94)
Could someone pls. give me an adwise: Found this on the net: --------------------------- System 100 bass unit (fc to 500Hz): Box Size: 22" x 22" Horn Length: 16" Curve Type: Exponential (m factor 0.6 .......
27: RE: What drivers can I use with my 80hz edgarhorns (5.69)
Posted by WOT on 2007-11-18, 03:50:38 (80.42.85.111)
The EVM15L is an excellent sounding driver for straight horns, I sold my D130's and Vitavox AK155's and kept the EV's, cheers .......
28: Speaker repair in San Francisco? (5.64)
Posted by kappajoe on 2003-01-20, 18:40:09 (66.109.147.37)
I have to get a pair of EVM15L reconed and was wondering if you had any good experiences. Any good tube stores there too? Thanks .......
29: RE: Alternatives to EVM15L for Volvotreter midbass horn (5.60)
Posted by Bill Fitzmaurice on 2010-01-14, 06:34:54 (71.161.93.69)
Model them in the horn, that's the only way to know for sure what the best driver is. I suspect you won't find major differences. .......
30: RE: OK heres the Ev PI 15 spec sheet. (5.56)
Posted by reVintage on 2011-04-02, 12:08:30 (77.218.235.121)
This is a sim of an 60cm Exp with the EVM15L. It is close to Edgar 80Hz but with some small porting to make it go lower. .......
31: Re: evm15l's (5.54)
Posted by gazzamongo on 2004-07-03, 16:44:37 (80.0.33.9)
sounds like a great system i'm interested in your impressions of the 80hz horns when they're done as i've got evm15l's too.they are in karlsons at the moment but i might give straight horns a whirl as .......
32: RE: Cone driver (5.54)
Posted by reVintage on 2011-03-30, 13:14:49 (83.188.242.114)
Hey TB, Only necessary to list those with Thiele-Small. Did a few sims around EVM15L. With a somewhat bigger box, maybe vented, and a shortened KW it looks great! In the ballpark of L=60cm, Am=5000cm2 .......
33: RE: Alternatives to EVM15L for Volvotreter midbass horn (5.49)
Posted by j_s on 2010-01-13, 13:59:08 (90.219.117.15)
Do you think a driver like the 18sound 15ND930 (x-tro midbass driver) would work well? .......
34: RE: Who does OAP buy their drivers from? (5.49)
Posted by Alpha Al on 2016-02-23, 09:56:35 (99.181.45.74)
Although I don't know for sure, I would bet they are Emminence. They are know to make OEM speakers for lots of American manufacturers. I do know for sure that Emminence makes one with that type cone, .......
35: RE:Because they like the sound, (5.35)
Posted by Retsel on 2022-12-21, 20:20:52 (99.8.87.166)
The Kappalite 3015 is priced about $270. I can get EVM15L woofers for about $100 less than that which makes these older EV speakers great deals for efficient 15 inch drivers. Retsel .......
36: EVM15L datasheet (5.35)
Posted by Red Pill on 2002-10-27, 01:02:17 (139.134.63.153)
Hi, If anyone has a copy of the EV datasheet for this driver and wouldn't mind emailling it to me, I would really appreciate it. I had a copy previously but lost it in a HDD crash. Thanks Cheers Brett .......
37: RE: Can anyone identify these baby Ev eliminators? (5.32)
Posted by amnesiac on 2012-10-06, 05:35:57 (58.110.42.84)
The back showing easy access unlike the bigger eliminators I have of the evm15l. I suspect and hope the bins go lower then the bigger ones. .......
38: Re: sounds cool...post a pic? (nt) (5.32)
Posted by gazzamongo on 2004-03-15, 23:10:30 (62.252.224.9)
ah yes...i have happened upon your site before ...i'm halfway through building a set of k15's with evm15l's at the moment...look very like yours. would like to see the radial horns if you have a momen .......
39: are karlsons pro-fane? (5.31)
Posted by gazzamongo on 2004-07-14, 10:45:26 (80.0.33.9)
hi freddyi, i've got one fane studio 15b kicking around and was wondering if it would be any good in a karlson for sub duties (11mm xmax vs 3mm evm15l) do you know which model dirk used? cheers gazza .......
40: RE: will a EVM15L cone kit drop into a SP15A? (5.26)
Posted by Bill Fitzmaurice on 2012-08-31, 08:11:26 (71.168.97.252)
Looking at the spec sheet the frame appears the same, so chances are the spider is the same. The earlier 6 spoke SP15A and first generation SRO also shared the same frame. .......
41: Kids, and dented dust caps (5.25)
Posted by Sector-7G on 2004-05-02, 11:35:09 (130.203.161.145)
yep, I feel your pain. My 2yo just poked in the cap of an old EVM15L I have loaded into a JBL 4560. Must get hi-strength grill, that's sure...though I am a bit closer to being able to justify a re-con .......
42: RE: Alternatives to EVM15L for Volvotreter midbass horn (5.21)
Posted by freddyi on 2010-01-13, 14:47:41 (173.80.163.220)
here's a Klipsch K43 type versus JBL 2220 light curvilinear cone type in Bruce Edgar's earlier 100Hz horn .......
43: Re: re evm15l's (5.21)
Posted by Sector-7G on 2004-01-25, 06:22:23 (130.203.164.245)
Hey-Hey!!!, I have used them in reflex cabinets up past 1k cps. It was a while ago, and I can't say I was all that critical. I would also considere the 15B model, though I am not sure its specificatio .......
44: Excellent! (5.18)
Posted by Horny on 2003-06-10, 09:12:02 (139.134.63.153)
Hi Tom, Very informative post, and timely. As I mention to Pooge below, I also have some EVM15L's (and EVM12L's) and have been working on an 80 - 500Hz flare to match my LABs. I'd be very appreciative .......
45: hope my eyes decieve me....! (5.17)
Posted by gazzamongo on 2004-02-04, 16:20:54 (62.252.224.9)
am i reading this right?k15 with my newly aquired evm15l will begin rolling off at 80hz and be 10 db down by 50????? does it need a bigger box will i get the punchy bass i crave with a curve like that .......
46: Re: Anyone know Le for EVM15L? (5.17)
Posted by Horny on 2003-06-10, 04:59:37 (139.134.63.153)
Thanks! Glad to help. This is an interesting thread, as I have EVM15, EVM12 and K140's to use to make an 80-500Hz midbass horn like the one you're talking about. Where is that database found? Link .......
47: RE: What's wrong with this horn? (5.14)
Posted by Bruce Edgar on 2013-09-29, 12:03:07 (76.166.135.31)
The response looks like the EVM15L. I prefer the B model which rolls off at 500Hz. Look at the cone. If it is smooth it is the B model. If the cone has a ribbed structure, then it is the L model. Bruc .......
48: Re: Monolith vs k-horn vs karlson (5.14)
Posted by gazzamongo on 2004-09-20, 11:21:38 (62.252.224.14)
freddyi, just lookin for subjective impressions really as i think i could knock up a monolith pretty quick and my evm15l's are supposed to be good with these ? Do the monoliths go as deep? i know k's .......
49: Re: JBL 4560 reflex tuning (5.10)
Posted by djk on 2004-01-25, 13:35:57 (208.252.113.86)
For JBL most bands preferred the K140/2205. The 2220 response is another 4.5dB above 200hz, but they have about 6dB less maximum output between 100hz~200hz because of the shorter voice-coil. For EV th .......
50: RE: Alternatives to EVM15L for Volvotreter midbass horn (5.07)
Posted by Bill Fitzmaurice on 2010-01-13, 14:44:17 (71.161.93.69)
Compare the specs, most important are Qes, Qms, Fs and Vas. You can find the EV specs in the EV archives. Even if the specs aren't really close the result may be OK, model it in HornResp to see. ::: .......
51: RE: EVM15B in FH1 (5.04)
Posted by KanedaK on 2018-01-24, 00:34:29 (94.111.58.0)
Years ago I had a pair of LaScala with EVM15L, have to say bass performance was really poor and I bought a pair of K33 and never looked back. They're the same K33 i'm still using now. However I've nev .......
52: RE: Cone driver (5.02)
Posted by tubebuilder on 2011-03-30, 10:16:00 (58.106.35.193)
Yes but mostly ten inch is what have been collecting. And mostly open baffle spec ed drivers. I am working on a set of evm15l . Like I said I would like something with more finesse then that. Perhaps .......
53: Re: re evm15l's (4.99)
Posted by freddyi on 2004-01-25, 17:22:56 (63.188.81.39)
not sure -guess ~100dB 1W/1M at 60Hz so ~112dB up close for one cabinet at 60 and 116dB around 100 so ~116-122dB total in nearfield for 30 watts total - not sure of peak levels in 16x16x9 ft room at 9 .......
54: will a EVM15L cone kit drop into a SP15A? (4.99)
Posted by freddyi on 2012-08-30, 10:53:06 (75.109.224.112)
can't remember if the spiders are the same or not - my SP15A has a good coil but real bad/rotted cone - hate to pull the cone for dimensions and find out that an aftermarket kit won't fit .......
55: RE: Beautiful Volti Audio La Scalas! (4.98)
Posted by reVintage on 2011-04-14, 10:37:45 (77.218.211.178)
You probably did it with a sh-tty useless Klipsch driver. Nothing helps with that. Sim again with conical all the way from the bend with a descent loudspeaker. Also remove the 250cm2 beginning area .......
56: RE: Alternatives to EVM15L for Volvotreter midbass horn (4.95)
Posted by j_s on 2010-01-15, 06:18:22 (90.219.117.15)
I've looked into this, but it's going to cost me £160 for the recone kits and importing the drivers from the states is going to cost £200 + taxes, the Eminence drivers are £185/pair, B&C or 18sound £4 .......
57: Re: Edgar horn questions... (4.93)
Posted by Bruce Edgar on 2003-01-05, 18:14:03 (66.75.177.221)
I originally designed the 100Hz horns for the EVM15L. The 12L will work. but doesn't have the bottom extension. The 100Hz horn needs to be lifted off the floor by several inches to even out the respon .......
58: Re: Bass Horn Driver (4.83)
Posted by Bruce Edgar on 2003-06-01, 20:01:39 (66.75.178.220)
The best figure of merit is the mass rolloff formula Fh=2*Fs/Qes. The 15 used by Speakerlab had a mass rolloff frequency of 100Hz, so wonder you didn't get good results. The EVM15L has always been a g .......
59: Re: re evm15l's (4.78)
Posted by freddyi on 2004-01-25, 14:27:26 (63.188.160.224)
nice ceiling height 2- Karlson should fill the room nicely with fairly high levels (at least 120dB up close from one box) without exceeding the EV's 3.3mm xmax straight horns would be interesting but .......
60: Re: edgarhorn midbass driver? (4.74)
Posted by Bruce Edgar on 2003-04-23, 09:16:11 (66.75.177.221)
You have to buy the EV's on EBAY or JamminJersey. Even with burned out EVM15L's or B's you can get them reconed as 15L's. In fact that is probably the best way of going since paper cones tend to suck .......
61: Re: re evm15l's (4.72)
Posted by gazzamongo on 2004-01-25, 14:07:41 (62.252.224.9)
room is 16ft x 16ft(9 ft ceiling)...listening approx 12 ft from speakers wondered about standing straight bass horn vertically with a floor reflector (like the "eiffel" you posted once) but would this .......
62: Re: Info on SpeakerLab K-Horns, circa 1978 (4.69)
Posted by Bruce Edgar on 2001-07-08, 20:04:37 (63.25.35.86)
I talked to the guys that developed the Speakerlab Khorn in the early 80's. The driver they tried to use was completely unsuited for horn use. Their driver was a sealed box woofer. I would suggest try .......
63: Re: EVM15L as a direct radiator midbass/midrange? (4.68)
Posted by Bill Fitzmaurice on 2003-06-26, 04:34:11 (205.188.208.9)
The 15L was designed to operate at around 100dB/watt from 80 to 3kHz or so as a guitar speaker and does so very well. Use WinISD to find the best box size for the performance you need. It will work we .......
64: RE:Because they like the sound, (4.66)
Posted by Bill Fitzmaurice on 2022-12-22, 05:01:37 (73.186.230.3)
If all I wanted was to equal EVM15L performance I'd use a new Delta Pro 15 for the same price. But that's moot, because the OP stated that he only wanted to go down to 80Hz. That being the case I'd us .......
65: Re: Anyone compared EVM15L to Lambda TD15M in Bruce's horns? (4.63)
Posted by JeffreyJ on 2003-03-28, 14:30:45 (199.82.243.73)
you may still want to grab a pair before they are gone, but.... the rule of thumb that I have always been told to use to determine high frequency performance in a horn is 2*Fs/Qes (Danley or djk feel .......
66: RE: Euro horn Plans for our Data base.I really nice mid bass concept (4.62)
Posted by reVintage on 2011-04-02, 06:05:13 (90.133.251.99)
Don´t think this is designed horn at all, only made for its cool look. Of course I can be wrong but I have simmed several in that style without success and one can do a lot better in 2011. It is a lon .......
67: Xover for fake Khorns (4.61)
Posted by djn on 2003-04-24, 10:50:07 (68.43.164.107)
I built a pair of speakerlab khorns with the wa4000 tweeter, speakerlab fiberglass midhorn driven by the atlas, and speakerlab 1508s woofer. I made the throut opening for the woofer 6x13 in anticipati .......
68: RE: Alternatives to EVM15L for Volvotreter midbass horn (4.59)
Posted by Bill Fitzmaurice on 2010-01-13, 08:35:47 (71.161.93.69)
The DPro is not bad, the Kappa Pro is closer. I'd imagine either will work better than the 15L, at least near Fc, as its Qts is awfully low. You'd have to model it to be sure. The DPro and KPro are cl .......
69: RE: Horn throat size question (4.58)
Posted by floydandrews on 2009-12-22, 08:23:12 (69.109.163.14)
I've got a set of Edgarhorns in my basement collecting dust. (100 hz bass horns designed for EVM15L drivers, rectangular midranges originally designed for 2" dome tweeters) And a pair of GPA Altec 414 .......
70: BIG horn not loaded with 15Ls but with 18G400? (4.52)
Posted by Gwen on 2013-08-01, 10:54:40 (77.181.65.171)
Now, first of all THANK YOU ALL SO, SO MUCH! This has been quite interesting so far and I've learned a lot with your help. I really appreciate it very much. Now I have been thinking, reading (and simu .......
71: Re: Electrovoice EVM15L (4.50)
Posted by Hermit on 2001-02-21, 18:02:08 (213.122.244.16)
I just happen to have my spec sheet handy: fs 43Hz Qes 0.25 Qms 4.96 Qts 0.238 Vas 0.245 cu m (8.65 cu ft) Vd 282.2 cu cm (17.2 cu in) Sd 855.3 sq cm (132.6 sq in) Xmax 3.3 mm (0.13 in) Pe(max) 200W E .......
72: Re: Leach throat size vs. Keele/Edgar size (4.48)
Posted by pooge on 2003-06-09, 23:24:35 (209.249.181.46)
I did a little reading of that paper today, too; but I still haven't been able to read Keele's preprint on Optimum throat sizes. However, in in other papers Keele mentioned he optimized for efficiency .......
73: Re: Electrovoice EVM15L (4.46)
Posted by larus on 2001-02-21, 18:37:27 (63.67.9.128)
Fs=43 Qts=0.238 Qes=0.25 Qms=4.96 Vas=8.6521 Re=5.2 Xmas-3.302 SPL=104 Diameter=15 You should take measurements before designing, expecially if a recone is required. BTW: If you recone, I recommend us .......
74: Re: Electrovoice EVM15L (4.46)
Posted by larus on 2001-02-21, 18:08:19 (63.67.9.128)
Fs=43 Qts=0.238 Qes=0.25 Qms=4.96 Vas=8.6521 Re=5.2 Xmas-3.302 SPL=104 Diameter=15 You should take measurements before designing, expecially if a recone is required. BTW: If you recone, I recommend us .......
75: Newbie question: Any harm from removing 1.5mH coil? (4.46)
Posted by tetsuo on 2005-07-05, 17:22:28 (66.235.0.185)
The 15" horn-loaded woofer (EVM15L) in my speaker system is currently low-passed with a 1.5mH coil. As an experiment, I removed the coil, and find a nice improvement in clarity and "transparancy" (hat .......
76: fanes n karlson n dsp (4.46)
Posted by gazzamongo on 2004-09-28, 11:12:18 (62.252.224.14)
hi freddy, just tried the fane studio15b i got for 25 quid (pounds sterling) in my k15, as this will be my sub cabinet(with a plate amp) when i build some 100hz straight horns for my evm15l's this was .......
77: Free Edgarhorns in San Francisco (4.45)
Posted by floydandrews on 2015-04-13, 16:36:40 (162.224.83.82)
I have a pair of Edgarhorn 100 hz midbass horns designed for the EVM15L or EVM15B drivers. They are the horns alone, no speakers. Free to the first person to come to downtown San Francisco to pick the .......
78: Khyboe innards (4.43)
Posted by freddyi on 2006-11-15, 06:46:36 (75.109.37.43)
Dims 27" high by 20.625" high by 15" deep including 1.5" inset so basic box without lip would be 13.5" deep. Rough sketch 115 innards 1/24 octave outdoors with 15L Port open - port blocked 1/6 octa .......
79: Re: Horn kits/plans available (4.40)
Posted by Bruce Edgar on 2003-01-22, 07:58:41 (66.75.177.221)
You can use your sweat equity and build my old midrange horn from my 86 Speaker Builder article or you can buy shells from Edgarhorn. Cone drivers (JBL 104H or similar go for $50 or less). The Fostex .......
80: How does an inductor help impedence matching? (4.40)
Posted by tetsuo on 2005-07-05, 10:51:18 (66.235.0.185)
Newbee question: My speaker designer told me that the purpose of the 1.5mH coil on my woofer is primarily for impedence mathcing, rather than as a low-pass filter. When I remove the coil from the cros .......
81: RE: newb question on tuning horn (4.40)
Posted by reVintage on 2011-05-19, 05:47:12 (193.12.106.91)
Forgot to tell you in my first post that Fh should be adjustd to make F0 equal to your chosen Fl. But everything is in the instructions in the file. Mmd-export to Hornresp also fixed. Are you unable t .......
82: Re: Anyone using a 50 cycle bass horn? (4.32)
Posted by Claes on 2001-07-19, 10:26:25 (194.23.88.33)
Hi, I used an EVM15L in a folded 40Hz hyperbolic horn with decent results. The horn measured pretty flat up to 400Hz. This design only has two folds though. Electrovoice drivers are MUCH cheaper in th .......
83: Re: Hey Fred ! Hey Dennis - are those (4.29)
Posted by djk on 2003-07-01, 00:11:35 (206.24.61.214)
Yeah, those were an early MantaRay experiment. Square mouth was a no-no. Big peak at 200hz right before cut-off. Fixed it in the crossover. EVM15L with a 4:1 throat. The HF boxes were stacked K400/Atl .......
84: JBL 4560 reflex tuning (4.28)
Posted by Sector-7G on 2004-01-24, 20:48:43 (130.203.162.153)
HEY-Hey!!!, Just so you know, I went through the archives and found no useful answers. I just got a pair of these cabinets and am curious about the reflex tuning. There are the four small ports in fro .......
85: RE: Alternatives to EVM15L for Volvotreter midbass horn (4.27)
Posted by PK on 2010-01-13, 09:14:45 (80.62.35.82)
Hi, In my large, straight 29 Hz bass horns, I use a double 15" PD.158 drivers from Precision Devices. Given their high EBP, they can be used up fairly high in frequency - at least for a 15" driver. To .......
86: Re: Using high compression drivers W/O crossover (4.23)
Posted by specopsda on 2001-03-29, 11:05:22 (63.17.197.254)
I recently got a set of Edgar midbass and midrange horns. I called Dr. Bruce and ordered the midrange driver and tweeter from him. The midrange is a JBL (LE-5, I think) and the tweeter is a Fostex hor .......
87: Re: Leach/Keele throat size discussion, continued (4.22)
Posted by pooge on 2003-06-12, 09:43:52 (63.71.228.3)
"The problem with the EVM15L and other similar musical instrument drivers is that they all display suspension stiffness domination at the high frequencies. These drivers only have circular breakup mod .......
88: Re: re evm15l's (4.21)
Posted by freddyi on 2004-01-25, 11:48:28 (63.188.160.224)
with straight midbass horns of "practical length" (~1.25M) you'll need a sub - the old Karlson box should suffice for most music and I'd probably run the 15L up to ~1-1.2Khz to suitable horn and perha .......
89: can i answer a question with a question (4.13)
Posted by gazzamongo on 2004-02-02, 04:53:17 (62.252.224.9)
hi freddyi, on the topics of extension, distortion, effeciency, max spl...bass quality (?) what are your observations comparing a k15 to your edgar monolith.....with same driver (2220 (?)) bruces mono .......
90: RE: Alternatives to EVM15L for Volvotreter midbass horn (4.03)
Posted by nl on 2010-01-13, 18:44:17 (74.32.146.244)
The reason for the use of the EV15 is its high Fs and low Qes. This allows it to go high enough to cross to a horn around 500hz without having mass rolloff. The reason for the use of a 15" driver on a .......
91: RE: Seriously?! (3.98)
Posted by Inmate51 on 2019-12-12, 04:20:21 (47.188.188.111)
Thanks for reminding me to look up the EV data sheet. (Aside, I used to have all those data sheets back in the day, but was dumb enough to throw out most of them!) So, I found it at, oddly enough, ele .......
92: Re: adjusting Edgarhorns for different drivers? (3.97)
Posted by JeffreyJ on 2004-08-17, 17:49:16 (65.7.46.35)
I successfully used the EVM12l in an Edgar 100 Hz expo "designed" for the EVM15l... it worked great... I had to use a baffle that was 1/2" mdf to mate the driver as you say, but it also formed a front .......
93: question for bruce edgar (3.94)
Posted by john on 2003-01-28, 14:49:32 (195.92.67.70)
Hi Bruce, I purchased a pair of mid-horns from you way back in '93 (D54) and I still love them, Now Im into woodturning and compression drivers, so to amuse myself I have measured the mid-horns and co .......
94: Re: err... (3.92)
Posted by zettelsm on 2004-10-09, 09:58:18 (137.161.244.253)
Well, I guess technically you are right, eso -- they aren't the turn-key Titans. I guess I slipped into the habit of calling them "Titans" by way of calling them "DIY Titans" and got lazy. Same midran .......
95: very big horn from 60-400 Hz? (3.90)
Posted by Gwen on 2013-07-25, 07:27:28 (77.181.242.245)
Thanks freddyi! I will look into Jim Bell's tapped horn, it looks very interesting. However, the 6th order bandpass I designed for a Beyma 18G400 ends up having a sensitivity of around 103 dB fr .......
96: re evm15l's (3.90)
Posted by gazzamongo on 2004-01-25, 05:06:28 (62.252.224.9)
what are your impressions of the evm 15l's vs altecs and other drivers? i'm thinking of using a pair in a karlson or straight midbass horn...are they smooth up to or beyond 800 hz? gary mcdonnell-thom .......
97: Re: EVM15L as a direct radiator midbass/midrange? (3.89)
Posted by Bill Wassilak on 2003-06-26, 08:51:33 (65.115.221.98)
Hi Neil, Should work out good I've used the 15L for midbass before but it was horn loaded and only went down to about 200hz. A direct radiator should be fine for your application the speakers are effi .......
98: Re: "Best" 15 inch driver for two-way: recommendations? <nt> (3.86)
Posted by Tim Moorman on 2003-10-11, 01:33:18 (64.12.96.9)
Depends on the use, naturally, but here goes a few of the usual suspects based on higher efficiency: 15" Altec 515G and 416 JBL 2225,2226 and marginally, the 2235(~92 dB), but goes deep. EVM15L All ma .......
99: Re: Whichone to prefer for Edgar System 100 bass unit: Electro Voice EVM12L or EVM15L (3.81)
Posted by freddyi on 2001-08-20, 21:15:39 (158.252.24.195)
Hi Erik my old sytem 100 is hyperbolic (m~0.6) - depth from mouth to throat ~21" - throat ~80 sq. in., moutn is square @ 18.25" each side - its about 21" on the outside of the mouth wouldn't exponenti .......
100: combining crossover orders?!? (3.76)
Posted by gazzamongo on 2004-07-08, 11:29:18 (80.0.33.9)
The evolution of my karlson project continues (at a glacial pace)with the completion of the edgar mid for the jbl le5. I like its sound (smooooth)....but not as much as i like the grip , dynamics and .......
101: Re: ping dr edgar/steve schell.......bottom exit horns (3.74)
Posted by gazzamongo on 2004-02-10, 09:50:58 (62.252.224.9)
hi bruce, thanks for responding hadn't made a firm decision on flare rate yet..probably between 35 and 40 hz...just playing with mcbean at the moment possible hyperbolic design with evm15l (good with .......
102: RE: super-high efficiency 80Hz...400/500Hz midbass horn using two electro voice EVM-15L - how about 2-12pe32? (3.74)
Posted by Gwen on 2013-07-24, 22:21:48 (77.181.242.245)
Ah crazy stuff! Thanks so much for the input. Karlson resonators are something I always was afraid of, I think because I've never heard one and it's just a concept I don't really understand;) I'm gonn .......
103: Re: Thanks for posting the pics! (3.73)
Posted by zettelsm on 2006-12-11, 20:19:02 (76.178.176.189)
You are very welcome, Dan. The back chamber on the straight horns is sized for proper reactance nulling when using the EVM15L drivers. Rather than extend the enclosing cabinet all the way back to incl .......
104: RE: got that. PS: (3.69)
Posted by Gwen on 2013-08-06, 16:10:50 (77.181.74.33)
Hi Anton, thanks again for the shared knowledge. I have access to a CNC sheet router and a very large sophisticated wood workshop at my school, so the tools are there. There is even a gigantic tablesa .......
105: RE: Alternatives to EVM15L for Volvotreter midbass horn (3.67)
Posted by Bruce Edgar on 2010-01-14, 21:37:19 (75.80.66.40)
I usually try to buy a blown EVM 15L or B on ebay and then get it reconed. Orange County Speaker Repair does a very good job on EV's. I have found in listening tests that the EVM15B has better force i .......
106: RE: very big horn from 60-400 Hz? (3.66)
Posted by Gwen on 2013-07-25, 15:39:54 (77.181.21.249)
Art, thank you so much for clearing this up for me. I know that such a design is capable of seriously dangerous SPL, I just wanted to make sure my thinking was correct. One more thing about the low en .......
107: ESG1 Stargate Transporter MTM. (3.62)
Posted by Magnetar on 2003-08-31, 07:11:05 (68.72.210.115)
Here is the new Stargate MTM system that uses the Esg1 near completion. The ribbon sitting on the base of the left Transporter got too close to a screw driver : (, These have 2nd order series networks .......
108: RE: Just Got Some Edgar Titan II's with Seismic Sub (3.60)
Posted by Retsel on 2021-05-17, 18:54:25 (134.67.29.94)
Wow, it really is a small world.... Tony picked up the Edgar system maybe around 2005. I suspect that he is around my age, so he would be in his 60s now. Back then there were some CD player modifiers .......
109: Re: Bass player's problem. (3.53)
Posted by Thorsten on 2000-10-05, 03:53:43 (195.99.125.202)
Hi, Sorry for the Delay.... The Peerless Horn will not do much for you as it is >10db lower in sensitivity than the EVM15L. As for the Impedances, you need to find out if the Am can drive loads lower .......
110: son of.....karlson (3.53)
Posted by gazzamongo on 2004-08-05, 14:02:47 (80.0.33.9)
i must be the slowest speaker builder out there....but my single mono karlson set up (806/811/evm15l)setup has begat another. isn't stereo kool i'm listening to the pixies doolittle album and i feel l .......
111: thats a self fulfilling prophecy freddy (3.51)
Posted by gazzamongo on 2005-05-14, 11:04:17 (62.252.224.14)
im still laughing at the pic ...but you know they 'are' gonna carry you away in one of those things when the time comes (hopefully a long time hence!) i will try the 'felt' thing...where would i get s .......
112: Finally some new midbass front horns... (3.45)
Posted by Volvotreter on 2006-05-16, 12:59:04 (80.132.216.35)
Hello, after some back and forth I built some conical front horns based on my last post and discussions / findings in this forum. These horns are an alternative to my 150Hz Tractrix. They are 77Hz, 3 .......
113: Proportioning Karlson-type couplers? - whats the impact of the 3rd Z peak? (3.44)
Posted by freddyi on 2006-11-18, 08:33:19 (75.109.37.43)
if someone is whac K y enough to attempt new couplers - how might they make a go for bulk, proportion and tuning? would they wish to consider a possible coupled-cavity peak? (K-designer Moray James ap .......
114: Anyone know Le for EVM15L? (3.43)
Posted by pooge on 2003-06-09, 11:48:22 (63.71.228.3)
Anyone know Le for EVM15L? I don’t know if it can show the electrical impedance or radiator motion but if so, the difference between the Keele and Leach alignments is clear.>> Hornresp appears to do a .......
115: while you're here freddy (3.42)
Posted by gazzamongo on 2004-02-04, 18:33:22 (62.252.224.9)
"is" the impedance of a jbl le5-2 "8" ohms...trying to design crossover...getting confused between re ((dc resistance?)is this what you measure across driver terminals with multimeter)) and z value (a .......
116: RE: Ping Freddy: is there a K10 to rival a K12? (3.35)
Posted by freddyi on 2019-01-03, 01:03:30 (173.80.176.148)
I can't think of a way to get a usable 35Hz K10 without dropping efficiency to around 88dB or so. IIRC Ken Lehman did a tall K10 with an Eclipse W1038 (maybe 0838R ?) and added a tapered stub to the t .......
117: Re: Leach/Keele throat size discussion, continued (3.33)
Posted by Bruce Edgar on 2003-06-12, 09:16:07 (66.75.178.220)
The problem with the EVM15L and other similar musical instrument drivers is that they all display suspension stiffness domination at the high frequencies. These drivers only have circular breakup mode .......
118: Acoustic Control 115BK (KHYBOE) impedance - ping RCA-Fan - (3.26)
Posted by freddyi on 2006-11-06, 09:58:11 (75.109.37.43)
I think Acoustic Control's little 115BK is ~Walter Alan Zintz's Transylvania Power Company's "KHYBOE". My example #1 was simple and featured a 20 degree diagonal baffle board which runs towards top na .......
119: "Folk Lore Math" (3.17)
Posted by Wayne Parham on 2003-06-13, 16:15:36 (65.69.121.42)
The earlier Keele/Leach discussion referenced a 50Hz-500Hz horn and the differences in the descriptions of the proposed device using Keele and Leach models. It looks like the idea was to zero in on th .......
120: RE: very big horn from 60-400 Hz? (3.12)
Posted by weltersys on 2013-07-26, 10:35:27 (174.28.243.176)
"One more thing about the low end: do you state that the EVM15L is not going to be usable under 60Hz? If the horn would (theoretically) be further optimized / enlarged for extended range down to let's .......
121: Re: Leach/Keele throat size discussion, continued (3.11)
Posted by pooge on 2003-06-12, 03:07:43 (209.249.181.42)
Bruce, when you speak of high frequency rolloff, are you talking about 3db down points? I've heard that Keele's mass rolloff frequency is not very accurate. The SPL model of the EVM15L with Keele's th .......
122: Leach throat size vs. Keele/Edgar size (3.10)
Posted by pooge on 2003-06-07, 13:48:05 (209.249.181.12)
Been trying to design an 80Hz M=.6 midbass folded horn extending to 500Hz+ with an EVM15L. I'm getting a conflict with the various design approaches. Edgar advocates Keele's optimum throat size, which .......
123: I 2nd all of this (3.05)
Posted by gazzamongo on 2004-09-28, 06:43:15 (62.252.224.14)
i remember being horrified when freddy showed me graphs of bass rolling of from 70 hz...eek! however ...messing about with tones from true rta gave as strong response with negligable cone movement dow .......
124: Re: Horn Experts- Question??? (3.01)
Posted by Magnetar on 2003-08-21, 17:10:10 (68.72.209.175)
Hi Randy! How's West Coast Life treating you guys? Got the pic's of your trip, looked like FUN. Hope all is well. Yup, I have all the pieces of the puzzle. Now the fun part of putting it all together. .......
125: Anyone know Le for EVM15L? (2.95)
Posted by pooge on 2003-06-09, 11:57:50 (63.71.228.3)
Anyone know Le for EVM15L? "I am not familiar with hornresp although I have heard of it. I don’t know if it can show the electrical impedance or radiator motion but if so, the difference between the K .......
126: Re: Maybe I misunderstood PK on this (2.93)
Posted by Bruce Edgar on 2003-11-07, 09:00:26 (66.75.178.220)
1. Do your DR horns have a rubber throat? You didn't say in your reply. 2. Constricted throats don't seem to affect the highs as shown in my straight horn experiments published in the "Kloopshorn" art .......
127: Loosing drivers (2.84)
Posted by weltersys on 2004-09-15, 00:54:05 (172.145.220.204)
Think you probably saw my previous post about only having lost a total of two Eminence 1", one in a severely abused stage monitor, and another from a probable screw-up where it was plugged into mid or .......
128: 2nd order...what the doctor ordered? (2.83)
Posted by gazzamongo on 2004-06-12, 05:42:06 (80.0.33.9)
i'm larking around with my new setup which is evm15l in karlson with le5 (in freespace) and 806/811 crossover is first order at 500hz and 5khs.sounds nice at low volumes but le5 is a little ragged at .......
129: k15's (2.70)
Posted by gazzamongo on 2004-07-13, 09:10:30 (80.0.33.9)
hey tom, i've recently built a k15 with evm15l's and am soon to try building a set of 100hz straight horns a la edgar. reason being ...i like the karlson bass which is tight , powerful (loud with my 1 .......
130: RE: Macaulay B1540 15inch woofer specs? Moved from Pro no luck there. (2.69)
Posted by tubebuilder on 2011-04-24, 21:01:27 (58.106.152.68)
McCauley B1540 B1540 15" basenhed , 4" vc , 38Hz , 400/800W , 103 dB 15 "woofer, 4" vc, 38Hz, 400/800W, 103 dB 1584 1584 1980 1980 I found this is a dutch sale catalog . 38hz 103db if it is 38 hz I am .......
131: Re: My new toys! (2.68)
Posted by zettelsm on 2004-10-08, 08:51:12 (137.161.244.253)
Hi Freddy, Very definitely keepers! The Seismic arrived assembled, banded to a stout pallet. I had it trucked to where I work, since we have a couple of fork lifts available. Probably around 250 lbs f .......
132: Re: "Folk Lore Math" (2.65)
Posted by Bob Armstrong on 2003-06-14, 00:14:57 (206.72.67.34)
Tom and Wayne, This is so easy to explain. When discussing sealed box topology, there is for a given driver a continuum of Qtc and Fb values contingent on Vb. No one set of values is "The Correct One" .......
133: RE: Beautiful Volti Audio La Scalas! (2.62)
Posted by KanedaK on 2011-04-15, 03:47:42 (109.128.1.189)
"lousy"? "bulky, bassless and no definition"? "shitty useless drivers"? it's quite severe critics on a speaker that's been built for ages, has been nominated "diapason d'or" by french classical music .......
134: Re: Collapsing directivity and breakup modes (2.60)
Posted by pooge on 2003-06-12, 19:24:47 (209.249.181.80)
So it would seem to be a prudent design choice to make a bass horn rectangular, relatively tall vertically, and narrow horizontally, like a slot tweeter, to help keep the horizontal directivity from c .......
135: Making it sing.... (2.58)
Posted by tetsuo on 2005-07-06, 13:19:56 (66.235.0.185)
There seems to be a problem with my previous post disappearing. Regret any inconvenience and confusion if this turns out to be a double post. I'm optimizing new speakers, and would be grateful for a s .......
136: folded basshorn (I am new to this site) (2.52)
Posted by gvjoe on 2000-12-15, 22:30:53 (209.5.115.3)
hello folks, I am new here, and I am interested in the basshorn (front loaded) of course. I am glad I found you guys, this site is what I was looking for. I am trying to figure out the basshorn, so I .......
137: Possible forum sub? (2.36)
Posted by moray james on 2002-11-13, 21:18:58 (205.206.148.210)
Hi Tom: you spoke a while back about a possible forum sub design process similar to the process you used to design the "Lab Horn". I can't speak for others but I can explain my situation and that migh .......
138: Re: Which midrange will mate and sound best for 3-way with TAD2001.... Altec 290E, Altec 288-16K, or JBL 2485? (2.34)
Posted by Neil on 2004-01-26, 16:16:43 (128.200.121.59)
Hi Romy, To clarify, Stage 1 of the project will use a direct radiator 15" 416 crossed around 800-1200Hz. Stage 2 will add a large format compression driver and (hypex) midbass horn; thus aproximately .......
139: RE: This summer marks the 60th birthday of the Karlson K15 coupler (2.28)
Posted by freddyi on 2011-09-05, 11:45:48 (75.109.227.220)
back in the day, woofers, wideband and coax run with K15, all had reasonably low moving mass - probably 50-75 grams for a 15" speaker. I would try to keep moving down for the sake of good midrange sen .......
140: Re: EVM15L as a direct radiator midbass/midrange? (2.15)
Posted by freddyi on 2003-06-26, 08:37:30 (67.72.172.118)
Hi Neil- you might try Karlson (1951 design - plans published in Jan. 1954) - brace the back panel and tapers - maybe even experiment reducing back chamber volume a bit with wood, etc. while watching .......
141: RE: Claude, what happened to the 110dB, 4 ohm Eminence Kappa 15C (2.14)
Posted by claudej1@aol.com on 2021-11-30, 21:26:13 (162.207.20.19)
First of all, the INACCURATE, EXAGGERATED title of your post is not appreciated at all. I never claimed to have reached 110 db. on the woofer section. Plus I never built the crossover that my friend d .......
142: Re: Hard to say... (1.87)
Posted by Paul Eizik on 2006-11-07, 20:11:17 (4.158.0.174)
Dan Dr. Edgar has stated his preference for the L variants in his printed comments I have read (EVM15L and 12L too), which always left me feeling that I had the the little brother versions in my 15B b .......
143: Re: dr edgars tad 2001 2 way................... (1.83)
Posted by Bruce Edgar on 2003-06-30, 21:24:52 (66.75.178.220)
About 2 months ago, a customer brought in a JBL Harkness box and asked me to make it sound like a Titan. I was a little dubious, especially since it was a back loaded horn, a design that I've never li .......
144: melhuish exp/hyp calculator (1.41)
Posted by gazzamongo on 2003-10-21, 06:10:01 (80.0.33.9)
i want to build an 80hz straight horn using an electrovoice evm15l.parameters below. fs 43Hz Qes 0.25 Qms 4.96 Qts 0.238 Vas 0.245 cu m (8.65 cu ft) Vd 282.2 cu cm (17.2 cu in) Sd 855.3 sq cm (132.6 s .......
Found total of 144 records, Query: evm15l in High Efficiency Speaker Asylum, Time: 0 sec.