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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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some years back built (or tried) a single-path m=0.55 55Hz horn ~15cu.ft. -nothing special -first bend was not pretty - kinda like S9 but with throat ramps holding one vertical dimension of ~4" til upwards bend (driver fired into a trap-reflector) - were 3-conic approximations from an 80 sq.in. throat to a 720 sq.in. moutha higher flare probably would have been better box was too bulky - but reasonably loud with E140
is it asking too much of ~10 cu.ft. with say JBL 2220A to get a solid 65-650? -(PV FH1 = rhAT bulk)
how does one economically fold the bulk to not come up with too large a back chamber (unless was going to be vented) and get smooth 1st bend and response? - would 3-sections still be best or try a J?- 65Hz horn coming from 80sq.in - Sd of a 15" isn't very long to 3/16 size.
also - process seemed somewhat clumsy to fudge the expansion from 2nd to final section - on grid paper had to work from both ends then make a "decision" - a buddy looked at the same expansion completely different (opening up much faster/sooner)
sorry to ask so much.
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Topic - Making a good 15" driver folded horn to do 65-650hz decade - doable in 10cu.ft.? - freddyi 18:23:21 07/26/03 (42)
- You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) - JLH 23:46:33 07/26/03 (41)
- Piffel. Read the January 2003 issue of AudioXpress. - Bill Fitzmaurice 13:37:38 07/27/03 (29)
- Re: Piffel. Read the January 2003 issue of AudioXpress. - Centauri 08:40:38 07/28/03 (24)
- Horn Response uses math that is innaccurate. - Bill Fitzmaurice 11:45:23 07/28/03 (23)
- On axis SPL -VS- acoustic power response - tomservo 13:38:14 07/28/03 (22)
- Re: On axis SPL -VS- acoustic power response - Bill Fitzmaurice 15:06:03 07/28/03 (21)
- Re: On axis SPL -VS- acoustic power response - tomservo 18:44:03 07/28/03 (12)
- We're getting a bit off the question, Tom. - Bill Fitzmaurice 05:55:21 07/29/03 (1)
- Re: We're getting a bit off the question, Tom. - tomservo 06:46:21 07/29/03 (0)
- Thank you Tom, could have not said it better! - JLH 20:10:00 07/28/03 (9)
- Re: Thank you Tom, could have not said it better! - Bill Fitzmaurice 06:19:52 07/29/03 (8)
- Disagree - JLH 16:42:27 07/29/03 (7)
- You've got it backwards. The opposite is true. - Bill Fitzmaurice 05:03:47 07/30/03 (0)
- Bends - John Sheerin 21:06:12 07/29/03 (5)
- Re: Bends - hancock 07:21:27 07/30/03 (4)
- Re: Bends - John Sheerin 12:57:53 07/30/03 (3)
- Very interesting - Bill Fitzmaurice 06:06:57 07/31/03 (2)
- Re: Very interesting - John Sheerin 08:00:08 07/31/03 (1)
- Re: Very interesting - Bill Fitzmaurice 08:39:34 07/31/03 (0)
- Re: On axis SPL -VS- acoustic power response - John Sheerin 16:03:37 07/28/03 (7)
- I use three rates of flair over the course of the horn. - Bill Fitzmaurice 16:54:31 07/28/03 (6)
- Re: I use three rates of flair over the course of the horn. - John Sheerin 17:13:54 07/28/03 (5)
- Olsen - Bill Fitzmaurice 05:29:40 07/29/03 (4)
- Re: Olsen - JLH 19:32:07 07/29/03 (3)
- Olsen did what he did - Bill Fitzmaurice 13:34:26 07/30/03 (2)
- Re: Olson, Newton, Einstein and physics (long ramble). - Paul Eizik 21:55:43 07/30/03 (1)
- Hey Paul - Bill Fitzmaurice 05:41:04 07/31/03 (0)
- Re: Piffel. Read the January 2003 issue of AudioXpress. - freddyi 16:47:11 07/27/03 (3)
- 102 dB at 80 Hz from a ten in DR250a - Bill Fitzmaurice 04:21:08 07/28/03 (2)
- Re: 102 dB at 80 Hz from a ten in DR250a - freddyi 11:38:43 07/28/03 (1)
- Can't help you on a direct radiator driver - Bill Fitzmaurice 11:47:51 07/28/03 (0)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - freddyi 08:33:55 07/27/03 (10)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - djk 09:32:25 07/27/03 (7)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) - Q-Q? - freddyi 10:32:07 07/27/03 (2)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) - Q-Q? - djk 17:31:52 07/27/03 (1)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) - Q-Q? - freddyi 17:50:06 07/27/03 (0)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - freddyi 09:52:33 07/27/03 (3)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - djk 17:59:19 07/27/03 (2)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - freddyi 18:37:56 07/27/03 (1)
- RS440 vs R2 - djk 23:25:34 07/27/03 (0)
- Re: You'll never get a 15" to 650Hz in a folded horn; i.e. mass roll off. (nt) probably right - my 100Hz Edgarhorns - Lightning 09:25:10 07/27/03 (1)
- Re: You'll never get a 15" to 650Hz - doors and PWK - freddyi 09:33:06 07/27/03 (0)
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