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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps

Post Subject: Avoiding "Dial-an-Amp"Posted by Paul S on: 5/10/2009

This thread has gotten distressingly DIY, hasn't it?

But I agree entirely that the pot should be given the smallest assignment possible, meaning, pad/dial-in/isolate the hard line, as far as possible, up to the necessary-only balance range, and then isolate that, too.

And - as annoying as it is - I still suspect that the best results will come from separate, optimized, individual DHT transformers, and from entirely removing the "unused" tube's circuitry from the circuit (or even getting it out of the chassis...), apropos.

Basically, I think the bar has already been set too high for the Range O' Options Multi-fier amp to work out in this case.

Yes, it would be fun to have a way to easily play A-B games with different tubes. And one might even learn a lot from playing with something like this, like which tube to stick with. But this directly-coupled DHT makes everything in the circuit, "used" or not, a factor; so at some point I think you'd be best served to settle on a single DHT and then serve it as simply as possible.

Best regards,
Paul S

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