Another Aleph5

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Transformer power requirements vs dissipation vary according to what source you read. Minimum is 2x total dissipation, Nelson states 3x I think from memory.

Therefore, for A5 (300W total), you need at least 600VA in the transformer. This is 650VA, which is a compromise - the 800VA which would have been perfect just didn't sit in the case as neatly, so I opted for the 650VA (given I knew the toroid manufacturer was always conservative anyhow!)

Bass problem ?..... I haven't noticed one with either the A4 or A5.

Agree, don't put transformers in parallel. 125VA / 35V isn't useful for an Aleph.

Bias is standard from the original curcuit, I didn't modify it in any way. haven't measured it per se at this stage. (bloody work!)

Cheers,

Mark
 
Has anybody got the email address for Conrad Engineering. I've tried searching the net but all sites found only seem to give snail mail address. I want to see if they will provide their heatsinks unfinished and snail mail to Aus. will take ages!

Help! Please!🙁

Paul
 
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