long-tail-pair advice
Nov 4, 2008 at 2:42 AM Thread Starter Post #1 of 2

nikongod

DIY-ku
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hello head-fi

I just finished building my balanced amp. It uses a long-tail-pair with a CCS tail, and plate resistors now. I want to switch to CCS's on the plate, but am faced with the problem of "locking" the plate voltage, as it is direct coupled to the next stage and a precise voltage matters

The left one is what I have now. I KNOW the plate resistors are too small for a 6sn7, but wanted to pull a bunch of current. The right is the proposed design. Still sucking down plenty of current, but with a 110k-ohm plate load on the tube.



Does anyone think this will work? This is up on audio-asylum too.

Thanks
 

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