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1: Shady Lane, RE: Marrs Communications (0.00)
Posted by alexz on 2020-09-16, 12:42:29 (142.201.5.100)
UPDATE. =================================== Afternoon, Our office recently received a complaint and I have recently began an investigation into the Houston based company Marrs Communication. The Bett .......
2: Shady Lane, RE: Marrs Communications (0.00)
Posted by alexz on 2019-04-22, 16:59:48 (65.93.102.63)
well... after I was burned, I Googled and found a track-load or people screwed by Marrs ... canuckaudiomart , tapeheads ...everywhere. In summary, do not close Paypal despite BEFORE it is resolved. Pa .......
3: Shady Lane, Marrs Communications (0.00)
Posted by alexz on 2019-03-15, 07:03:44 (142.201.5.100)
If you want to get screwed, place the order here : https://marrscommunications.com/ In the short form: I've placed the order, after very long delays got the wrong belt. Contacted the seller, no replie .......
4: SET Asylum, RE: Good info. (0.00)
Posted by alexz on 2015-12-20, 13:19:20 (209.202.78.33)
I'm this "early adopter". Got ER300B before specs were published, discovered that they have lower mu and higher plate R, as Paul mentioned above, and therefore lower power. Got tube failure, got screw .......
5: Vinyl Asylum, RE: SME 3012/2 and SPU-GT is AWESOME ! (0.00)
Posted by alexz on 2015-12-19, 13:43:32 (209.202.78.33)
Stock SME/R shells have two locating pins. ... That is standard for SME type headshell. Many other headshells have 2 pins and are compatible with any SME (309 /3010/3012) The shaft may also be slightl .......
6: Vinyl Asylum, RE: SME 3012/2 and SPU-GT is AWESOME ! (0.00)
Posted by alexz on 2015-12-19, 10:10:24 (209.202.78.33)
Actually SME 3012R has standard headshell . .......
7: Tubes Asylum, RE: We have the Iron Clad "Caveat Emptor" guarantee in the U.S. (0.00)
Posted by alexz on 2015-08-29, 07:44:50 (207.219.37.133)
Thanks ! BTW, on Audiogon forum reps from Elrog stated : "Our warranty covers 2 years on materials and manufacturing and a half year for the emission" .......
8: Tubes Asylum, RE: We have the Iron Clad "Caveat Emptor" guarantee in the U.S. (0.00)
Posted by alexz on 2015-08-27, 12:36:20 (142.201.5.100)
Elrog hung True Audiophile out to dry. True Audiophile hung customers out to dry. .......
9: Tubes Asylum, RE: We have the Iron Clad "Caveat Emptor" guarantee in the U.S. (0.00)
Posted by alexz on 2015-08-24, 10:33:38 (142.201.5.100)
Sure, True Audiophile had problem with the factory and flipped it to the customers (very noble !) but, at list they tried to resolve it ... The Elrog itself, having my tubes and all the information cl .......
10: Tubes Asylum, RE: We have the Iron Clad "Caveat Emptor" guarantee in the U.S. (0.00)
Posted by alexz on 2015-08-18, 12:03:40 (142.201.5.100)
Is there any updates ? BTW, my tubes are very much under the warranty and yet I got nothing from True Audiophile but recommendation to ship to the factory and nothing, not even reply to email, from th .......
11: Tubes Asylum, RE: I bought mine in Late December 2014 (0.00)
Posted by alexz on 2015-08-16, 14:12:57 (207.219.37.133)
Well, I got a pair of ER300B from TrueAudiophile in March 2015. One of tubes has failed in June 2015. As per TrueAudiophile request I shipped tubes directly to the factory. Here is from the email from .......
12: Tube DIY Asylum, RE: Tube amp help (0.00)
Posted by alexz on 2015-04-29, 10:24:16 (142.201.5.100)
Another possibility: heater got disconnected for a moment in one of the tubes. .......
13: SET Asylum, RE: Remarkable ?distortion cancellation between input/driver end output tube does that. (0.00)
Posted by alexz on 2015-03-25, 11:35:31 (142.201.5.100)
Enjoy ! .......
14: SET Asylum, RE: Remarkable ?distortion cancellation between input/driver end output tube does that. (0.00)
Posted by alexz on 2015-03-24, 09:53:41 (142.201.5.100)
Hi, If you can accommodate about 3dB less amplification, about 5 watt power and if you 300B filaments PS are filtered DC, you will have a very pleasant surprise. .......
15: Tube DIY Asylum, RE: Just a FWIW... (0.00)
Posted by alexz on 2015-03-06, 13:09:12 (142.201.5.100)
yep, wiper is directly connected to the ground but attenuation is not. Signal sees two resistors and lower one is NOT connected directly to the ground by via wiper. Right ? Here is the wiper noise. :: .......
16: Tube DIY Asylum, RE: Impedance question. (0.00)
Posted by alexz on 2015-02-14, 17:35:58 (209.202.78.124)
Actually it is more like 1.5k .......
17: Tube DIY Asylum, RE: Impedance question. (0.00)
Posted by alexz on 2015-02-14, 17:31:52 (209.202.78.124)
You also need to add Zout of each transformer. .......
18: Tube DIY Asylum, RE: Yet another 300B amp (0.00)
Posted by alexz on 2015-02-12, 18:40:35 (209.202.78.124)
Interesting. It's more or less my amp. with a few twists. I prefer 15-16ma IA for C3M and own LC filter for each driver tube. That was a noticable improvment over "all together" PS. .......
19: SET Asylum, RE: Have you ever bought a pair of AN(UK) Doual C-Core OPTs? nt (0.00)
Posted by alexz on 2015-02-12, 18:12:54 (209.202.78.124)
I was listening to 300S transformers for a few months. What is the question ? .......
20: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-02-07, 14:44:14 (209.202.78.124)
True Audiophile posted ER300B datasheet: http://www.trueaudiophile.com/template/ER300B-Datasheet.pdf Close to what Paul has calculated, Ineterstingly, In my measurements distortions were less then pub .......
21: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-02-01, 15:37:45 (209.202.78.124)
Now it is my turn to get confused: Is it tungsten filament containing thoria to get high emission ? Or is it tungsten filament coated with Th02 for stability ? .......
22: SET Asylum, RE: Please help me troubleshoot my new SET (0.00)
Posted by alexz on 2015-02-01, 15:12:34 (209.202.78.124)
I've just noticed the following: "I should also note that it is using the stock tubes, except for having substituted a 274 B which Brian of Audio Note Kits sent me instead of the stock rectifier tube. .......
23: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-31, 21:04:50 (209.202.78.124)
Tube is cathode biased with 900ohm resistor. That is in one of the posts. If you are after precise nubers, here they are: Anode 427v Cathode 77v 427-77 =350v Ua 77/900=85.5555 ma Ia Ug is -77v in rela .......
24: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-30, 23:33:18 (209.202.78.124)
6 watt light bulb 6 watt infrared heater Also, please note that ER has 85ma current at -77v ug and 350v Ua. Whould you agree that there is connection between emission and anode current ? .......
25: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-30, 19:37:21 (209.202.78.124)
Yes, ER300B filament draws 1.2A. Yes, a thoriated tungsten filament runs at much higher temperature then a couted. Both filaments have the same energy consumption. Where is the connection to the outp .......
26: SET Asylum, RE: Some puzzling calculations (0.00)
Posted by alexz on 2015-01-28, 18:26:50 (209.202.78.124)
Great, actually not that far from EML. .......
27: SET Asylum, RE: Please help me troubleshoot my new SET (0.00)
Posted by alexz on 2015-01-28, 07:20:31 (142.201.5.100)
No, it may not help. AN kit 1 volume is after the first amplification stage 6SN7. If this one is clipping due to very high input signal, volume won’t help. But I doubt it is the case. I thing it just .......
28: SET Asylum, RE: Some puzzling calculations (0.00)
Posted by alexz on 2015-01-28, 05:57:18 (142.201.5.100)
From the manufacturer datasheet: primary DCR 93 ohm. .......
29: SET Asylum, RE: Some puzzling calculations (0.00)
Posted by alexz on 2015-01-27, 19:14:33 (209.202.78.124)
EML tubes comes with the measurments : Gm is 4.5 and 4.9. Obviously Rp is also vary, tubes have the same amplification. HTH, Alex .......
30: SET Asylum, RE: Some puzzling calculations (0.00)
Posted by alexz on 2015-01-27, 18:04:39 (209.202.78.124)
Paul, i have one more thing for calculations .;-) With output transformer 3.5k/16ohm with low output signal less the 1v, without load output is 0dB, with 16ohm load output goes down 2.6dB .......
31: SET Asylum, RE: Some puzzling calculations (0.00)
Posted by alexz on 2015-01-27, 17:58:37 (209.202.78.124)
Paul, you are absolutly correct, WE tubes are very much used in a last 15 years. Also, I did some distortions measurements, in the same position with the same driver. ER300B measures best up to 2V/16o .......
32: SET Asylum, RE: Maximum Output (0.00)
Posted by alexz on 2015-01-27, 15:17:56 (209.202.78.124)
....Paul Joppa has a quick rule of thumb that works really well. Load impedance, for a reasonable amount of output power keeping the harmonic distortion reasonably low, = (voltage / current) - (2.38 * .......
33: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-27, 11:24:21 (209.202.78.124)
well, you are correct, it is not enough runtime on er300b to get a complete picture. However, even in this stage Im very happy with the sound. .......
34: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-27, 08:01:14 (209.202.78.124)
Actually with the same cathode bias setup (900ohm cathode resistor) we300 rung at ~70ma, EMlabs 75ma, ER300b at 85ma. Not much of a difference . I don't know why you think less current is good. The co .......
35: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-26, 04:59:49 (209.202.78.124)
Thanks, Paul. On my case ER300B runs at -76/77 Ug, 85 ma Ia. 350v anode-cathod. Indeed they are ok in place of "traditional" 300b with cathode resistor. However, as mentioned output is almost 1/2 and .......
36: SET Asylum, RE: Elrog 300B (0.00)
Posted by alexz on 2015-01-25, 14:25:06 (209.202.78.124)
In my amplifier total gain with ER300 dropped ~3.5dB compared with the same amplifier with the we300b and EMLabs 300b. That in theory should bring driver distortion higher for ER300B with the same out .......
37: SET Asylum, Elrog 300B (0.00)
Posted by alexz on 2015-01-25, 11:13:03 (209.202.78.124)
Hi, I have a question re ER300B. I got few days ago my own pair from the US distributor. They have now about 25h runtime. Right after the shipping tubes were a bit unstable, Ia was jumping, but now ev .......
38: Tubes Asylum, RE: best 845 tubes for Nagra VPA? (0.00)
Posted by alexz on 2015-01-23, 08:40:23 (142.201.5.100)
Hi, I have a question re ER300B. I got few days ago my own pair from the US distributor. They have now about 20h runtime. Right after the shipping tubes were a bit unstable, Ia was jumping, but now ev .......
39: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2015-01-21, 08:12:10 (142.201.5.100)
Well... the saga continues. I sent cartridge back to the JP dealer I bought it from (BTW very nice guy, really pleasure to deal with). After short delay due to Christmas holidays I've got message from .......
40: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2014-12-18, 10:09:16 (142.201.5.100)
Craftsmanship, yes. Tube sockets and all kind of woodwork parts are amazing. However what makes Mr. Yamamoto to use C3M driver designed to run at 15-16ma with less that 2 ma current and drive 300B wit .......
41: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2014-12-18, 09:43:17 (142.201.5.100)
Yes, great that you have sorted it out. Interestingly that there are at list a few other posts about "jumping" Yamamoto cartridges in the Lenco heaven forum. Could it be that all of mentioned cartridg .......
42: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2014-12-18, 09:01:49 (142.201.5.100)
Well, I hope so. Not sure why I should get in the situation when I have to send a new cartridge for repair. It's not like i bought a $10 part on Aliexpress. .......
43: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2014-12-18, 08:19:30 (142.201.5.100)
Hi, Thanks for the reply. I can't really blame the tonearm, bunch of other cartridges are working OK with the AudioMod on my TT. I guess I will send it to Soundsmith as well. I was trying to contact Y .......
44: Vinyl Asylum, RE: Yamamoto YC-03s cartridge - hardly recommended (0.00)
Posted by alexz on 2014-12-17, 11:46:19 (142.201.5.100)
Could you please let me know with what tonearm are you using YC-03 ? I've recently bought a YC-03S cartridge and install it on the AudioMod tonearm. On the record with heavy bass (for example Ray Brow .......
45: Shady Lane, RE: Is MyKindofMusic/John Costanzo a fraud? (0.00)
Posted by alexz on 2013-09-27, 11:17:47 (209.20.61.151)
yes, that is correct. It was about 3-4 years ago and after few attempts to use store credit and after number of ridicules restrictions, pre-conditions and inflated quotes I decided that it would be be .......
46: Shady Lane, RE: Is MyKindofMusic/John Costanzo a fraud? (0.00)
Posted by alexz on 2013-09-26, 13:08:40 (142.201.5.100)
hello, I just find link to this thread in the CAM. John Costanzo (MKOM) sold my WB Full Circle TT, offered store credit for it and created all the conditions to prevent me from using this credit. It .......
47: ANK AudioKits Forum, RE: L2 Phono with inductance volume control (0.00)
Posted by alexz on 2012-04-08, 19:10:48 (209.29.55.131)
Hi, Where you get this 7k7 number from ? Firstly, your output stage has 33k plate R. Output impedance is aprox. Rp || ra that bring it to a value around 20k. That allow to conclude that 100k load is n .......
48: ANK AudioKits Forum, RE: M2x Power Supply Upgrade? (0.00)
Posted by alexz on 2010-08-25, 09:38:30 (192.206.151.130)
From the attached picture it clear that there are more things attached to the triode grid, not just 47p cap, making new word in design “triode with the floating grid”. .......
49: ANK AudioKits Forum, RE: M2x Power Supply Upgrade? (0.00)
Posted by alexz on 2010-08-24, 08:00:14 (192.206.151.130)
Nice! New word in design! Actually you can remove triode and nothing changes. .......
Found total of 49 records, Query: , Author: alexz in All Forums, Time: 0 sec.