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RE: 6v6 pp power amp

174.140.162.202

burwoodc

In Reply to: RE: 6v6 pp power amp posted by sony6060 on January 21, 2015 at 17:41:33

I'm not sure the transformers are stamped ft34239963 8316101

Follow Ups:

RE: 6v6 pp power amp - Triode_Kingdom 07:11:33 01/22/15 (6)
"the transformers are stamped ft34239963 8316101"

I'm pretty sure that's an HK number. Can you post a photo next to a pencil or something like that for scale? How much power do you need from this amp? There's a big difference between triode mode and pentode.

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Buy Chinese. Bury freedom.
- RE: 6v6 pp power amp - burwoodc 15:49:12 01/22/15 (5)
  I'm almost 100% sure these are the OPT's in the link below. The scale shape etc seems correct.there are what appears to be 8 and 16 ohm taps (green and yellow.)
  
  http://shermanr.web.prw.net/A300_TOP.jpg
  - RE: 6v6 pp power amp - Eli Duttman 16:51:32 01/22/15 (0)
    Those trafos look like the undersized stuff in a FA3000. Notice the relationship between the model #s. They should be FINE in a triode wired "El Cheapo". I suspect the "iron" is good enough to permit the use of of a 0.068 μF. cap. and a 120 Kohm resistor in the I/P high pass filter, instead of the 0.056 μF. and 100 Kohm parts shown in the schematic.
    
    The "6" WPC a triode wired "El Cheapo" yields combined with speakers of 94 dB. sensitivity will be adequate for all but the most demanding material. The digital cannons in Telarc's 1812 Overture recording might be overdoing things. ;> )
    
    Eli D.
    - H/K A300 (Open in New Window)
  - RE: 6v6 pp power amp - burwoodc 15:53:06 01/22/15 (3)
    Sorry for the poor pic its taken with my ipod and thats a dime for reference :) I think these came out of a an HK a300 pretty sure. I want nice mids etc I have a small sub I can use to get the jod done for bass but yeah not going for high volume just low to moderate.
    - RE: 6v6 pp power amp - burwoodc 16:00:37 01/22/15 (2)
      one more pic
      - RE: 6v6 pp power amp - burwoodc 16:01:47 01/22/15 (1)
        
        In Reply to: RE: 6v6 pp power amp posted by burwoodc on January 22, 2015 at 16:00:37
        
        Here is a side view
        
        RE: 6v6 pp power amp - Triode_Kingdom 10:26:09 01/23/15 (0)
        
        In Reply to: RE: 6v6 pp power amp posted by burwoodc on January 22, 2015 at 16:01:47
        
        Eli's correct about these being smallish for 6V6s. Still, they'll definitely output more power within their limits in pentode mode than triode. I'm pretty sure those transformers were used in both the A-300 amp and TA-224 receiver. You should be able to make a good performing amplifier with them.
        
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        Buy Chinese. Bury freedom.

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