DIYers: Questions on wiring

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

I'm building a DIY OTL amp, and as it's more and more ready for conversion from a messy breadboard to something good looking (and sounding), I'm confused with wiring. Most questions come from layout differences. I decided on a double-decker box, with a strong H-profile chassis carrying transformers (under the middle deck) and capacitors (above it). On top goes the separate dielectric board, 10mm thick, with all the audio stuff. So a monoblock with 8 6as7's fits into a 50*18*18 cm shoebox (+ tubes on top).
For the driver stage, there's at least 15cm wire run from the PSU ground to the audio star ground point. There isn't too much space on this board for additional caps. If I use a bridge rectifier for B+ and B-, wouldn't this ground path cause too much noise? Or should I make two separate rectifier/filters and connect their ground wires only at audio ground point? Does it really matter with these currents?
Second question on wiring 6as7' plates and cathodes. With 2 rows of 4 tubes each, I want to lay four thick bare copper buses, and hookup plates/cathodes to them with short jumpers. Then there will be the inevitable 15cm wires to the PSU capacitors (there will be some small bypass caps on the audio board too). Is it a sound decision or should I run individual wires from PSU to each plate/cathode?
TIA,
klaus
http://www.klausmobile.narod.ru

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Topic - DIYers: Questions on wiring - klaus 15:28:39 08/16/01 (0)

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