Recent content by brickj

Toroids: http://www.toroidy.pl/index.php?lang=en No affiliation, just a satisfied customer.

Neil - another board arrived safely in the UK! Many thanks. Justin.

Thanks for the information. Unfortunately I've not had much time this week, but the baudline software looks just what I was after and is clearly well designed and has a Mac OS X port, which is a bonus for me. I've briefly played with it using this sound card interface, which I built sometime...

Having built a few pre amps, headphone amps & power amps, I have the urge to measure their performance more quantitatively - even going as far as looking at HP 8903a/b audio analysers (why are they 2x in the UK!?). Has anyone measured the performance (THD, frequency response, power output...

That's good to know, thanks for the rule-of-thumb. Justin.

In practice, do I need to worry about how close the input connector is to the speaker outputs from the perspective of any kind of feedback? I plan to use screened cable for the input, so I think the answer will be "no" for the gain we're talking about, but before I drill some big holes thought...

Payment made. Thanks again! Justin.

Thanks all, that makes sense and how I shall proceed! Not long now, baseplate metalwork complete and FE power supply wiring done for one channel. Justin.

Hi, Can someone please guide me on how I should reference the 0v to earth, if at all. I have a starfish and my hackernap is nearing completion but it's unclear to me whether I should reference 0v to ground in the starfish, hackernap, both or neither! I'm inclined to rely on the source...

Arrived here too! Many thanks. Justin

A batch arrived in sunny Wimbledon this morning - thanks again for organizing the GB. Justin.

Mark - just paid for 16 via PP. Thanks again. Justin.

Got my 2 sets too, thanks Lorenz! Justin.

Chalk me up for 16 please. Many thanks. Justin.

2xB4 PCBs arrived in sunny Wimbledon today. Thanks Neil! Justin.