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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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I have completed my FIRST DIY tube amp. I built the JE Labs 2A3/45 amp. I opted to use 45s as the output triode. Ok now that it is all "done" I guess I did something wrong. Everything seems fine I suppose, I mean all the voltages are close to what they should be. BUT it sounds really terrible. There is absolutely no volume to it. I mean it is barely audible. I don't know what this could be???? I am using Hammond 125E OPTs and my speakers are about 88 db 1w/1m. I used seperate filment transformers for the 45s. The schematic used one. I just duplicated it. So on the center tap of them filment transformers I have a 100 uf 100v cap paralled with 2 1.2k ohm 10 watt resistors (that are also paralled) Is this right?? Also I didn't use a volume pot, instead I used 2 220K ohm resistors paralled attached to the input tube screen then grounded. Is this right?? (the schematic called for a 100k ohm pot) I am really at a loss. I think it is worth mentioning that I have never heard a hi-fi SET amp before, but I really don't believe that mine is working right. I don't expect much as far as power output goes, but I thought it would be at LEAST as loud as a clock radio! Someone please help!
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Topic - JE Labs Simple 2A3/45 - jellobrain 05:57:50 01/17/01 (29)
- ..... - Quest 07:27:58 01/17/01 (28)
- Are you sure? - jellobrain 10:20:48 01/17/01 (27)
- my apologies to you jelobrain - Quest 12:08:45 01/17/01 (1)
- Oops!( see, another mistakes again) - Quest 12:09:53 01/17/01 (0)
- Re: Are you sure? - J Epstein 11:11:49 01/17/01 (23)
- Another dumb question - jellobrain 09:46:11 01/18/01 (20)
- Theoretically speaking, - Quest 11:26:47 01/18/01 (19)
- Re: Theoretically speaking, - J Epstein 12:02:50 01/18/01 (18)
- A suspicious voltage! - jellobrain 17:18:44 01/18/01 (17)
- Re: A suspicious voltage! - J Epstein 21:17:28 01/18/01 (16)
- Re: A suspicious voltage! - jellobrain 03:55:28 01/19/01 (14)
- That's all OK - J Epstein 05:53:53 01/19/01 (13)
- I don't know yet - jellobrain 09:54:37 01/19/01 (12)
- Latest update - jellobrain 17:20:17 01/19/01 (11)
- Re: Latest update - J Epstein 07:02:07 01/20/01 (10)
- FINALLY SOMETHING! - jellobrain 11:46:40 01/20/01 (9)
- Re: FINALLY SOMETHING! - J Epstein 12:51:16 01/20/01 (8)
- checking voltage - jellobrain 13:38:03 01/20/01 (7)
- Re: checking voltage - J Epstein 14:18:10 01/21/01 (5)
- My only recourse - jellobrain 17:12:30 01/21/01 (4)
- Re: My only recourse - J Epstein 18:24:12 01/21/01 (3)
- The follies of first time DIYing - jellobrain 12:02:56 01/22/01 (0)
- The follies of first time DIYing - jellobrain 10:58:57 01/22/01 (1)
- Well, the good thing is: - J Epstein 12:34:40 01/22/01 (0)
- Can any of you "experts" enlighten me? - jellobrain 10:22:00 01/21/01 (0)
- here's the schemo and pinouts for 45/2A3 - J Epstein 21:42:16 01/18/01 (0)
- J.Epstein is right - Quest 12:00:17 01/17/01 (0)
- typo - J Epstein 11:14:12 01/17/01 (0)
- Re: Are you sure? - GSI 10:53:59 01/17/01 (0)
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