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Layout for balanced beta22.. opinions please - Page 3

post #31 of 39
1/9/09 at 5:33pm
For lowest noise potential I'd also recommend using shaft extensions like I did to shorten the signal path. I find front panel mounted pots to be a huge pain to work with although extensions do require a great deal of pre-planning to be executed well.
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post #32 of 39
1/9/09 at 6:10pm
Thread Starter 
Quote:
Originally Posted by n_maher View Post
For lowest noise potential I'd also recommend using shaft extensions like I did to shorten the signal path. I find front panel mounted pots to be a huge pain to work with although extensions do require a great deal of pre-planning to be executed well.
Can you give me a good source for the shaft extensions?

Thanks,
Sachu
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post #33 of 39
1/16/09 at 5:35am
Thread Starter 
I just wanted to pose a quick question here..I could very well squeeze the 4 B22 and 2 sigma22 boards in a 16x12x4 case. The transformers would then be placed in a separate box. Since the power supply is going to be AC into the amp box, I can run a longer length from the supply to the amplifier. I would be using a 8 pin Amphenol Tuchel connector for the quad secondaries running between the chassis.
That way, I can have the transformer box tucked away somewhere else and needn't invest in a costly box for the power supply transformers.

What do you think?
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post #34 of 39
1/16/09 at 6:07am
That would be fine. Orient the σ22 boards and the rear panel connectors such that the AC wiring from the transformers are routed away from the signal wires. The only other issue is that unless you add more wires to the umbilical for remote switching or something, the power switch would be on the transformer box. If "tucked away", how're you going to reach it??
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post #35 of 39
1/16/09 at 6:15am
Thread Starter 
Quote:
Originally Posted by amb View Post
That would be fine. Orient the σ22 boards and the rear panel connectors such that the AC wiring from the transformers are routed away from the signal wires. The only other issue is that unless you add more wires to the umbilical for remote switching or something, the power switch would be on the transformer box. If "tucked away", how're you going to reach it??
Thanks amb. Noted.

Tucked away in the sense it would be placed under my computer desk an arms length away while the amplifier would be sitting on my computer desk about 3 feet away from the transformers. I found a case for 2$ that would be perfect for the transformers. Just need to drill out a front panel hole for the switch and another on the back for a circular connector. It is a bit tacky looking but works.

Do you suggest an alodine case or an anodized case?
Both are supposed to help prevent corroision of aluminium with alodine being the less effective one. But considering that thisis going to be in side a pet free, smoke free home I don't see any need for an anodized case. Is there?

I was planning on a gold alodine finish. Else the clear anodized finish.
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post #36 of 39
1/16/09 at 11:25am
Hi
using AMB's B22/S22 front/rear panels FPE files, is there a way to easly convert it to 4" high panels, or do I need to start from scratch? I have taller heat sinks and it won't fit the 3" Par case.

Also a source for extension kits for volume control and Alps 50k Quad pots?

Thanks

Frank
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post #37 of 39
1/16/09 at 3:18pm
Answered on headwize.
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post #38 of 39
1/16/09 at 4:29pm
Quote:
Originally Posted by amb View Post
Answered on headwize.
thanks
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post #39 of 39
1/16/09 at 4:46pm
Thread Starter 
Quote:
Originally Posted by fc911c View Post
Hi
using AMB's B22/S22 front/rear panels FPE files, is there a way to easly convert it to 4" high panels, or do I need to start from scratch? I have taller heat sinks and it won't fit the 3" Par case.

Also a source for extension kits for volume control and Alps 50k Quad pots?

Thanks

Frank

I bought my extension kits from diyclub.biz
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