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Look!  It's like a mirror image! Uploaded with ImageShack.us

Something is very wrong if you wake up at 2 and decide that your white croc clips are dirty, and then clean them. On the bright side, the second aluminium angle is prepped, if I fail to get tired (and it looks to be the case) i'm probably gonna push through and finish the angle sink work on the...

I'm glad my speakers were at least good enough to inspire - and considering it was a mono demo - I think we're all gonna be blown away by these marvelous amps when we have decent stereo sets running.

And Fluke fuses are 70 bucks a pop. :)  You don't wanna pop the Fluke fuse like I did.  It's bad. Very bad.  You don't wanna do it.

Sorry just to clear up - I'm not worried about thermal runaway, I meant, running into thermal limits. That is, Running more power through the trannies than they can handle, derated at the case temperature of 80 degrees or 90 degrees or more, if the heat sinks are not sufficient. But, the...

Um, back the bias?  Do you mean I have to adjust the bias from the current 20 mA to 34 mA as in the circuit diagram graphic? Should be safer with the current confguration?  I'm not following - (very confused look on the screen saver cantainer)  ???

OK Still looking for good speaker terminals, power switches, RCA sockets, front facia and chassis then. Playing low volume the little angle I had on, no proper heatsink, it went up to 56 degrees (measured at tranny case / body / collector between the base plate and the dome).  I reckon if one...

18 mV offset DC on the output - the speakers did not even crackle when connecting with the amp live (naughty naughty), so I didn't even bother to check.  So I had to turn on especially to check, that also means it's measured at startup.  Will have to do a hot run to measure at steady state.  But...

Monoblock number 2 playing: Uploaded with ImageShack.us It worked first time.  Power up and go.  No debugging required. And it plays awesome.

I'm using 1.5mm2 electrical wire, you may want to get 2.5mm2. You can get from electrical suppliers, try Electrahertz, they seem to have everything. Better suggestions are welcome - I'm also looking. I'd suggest Builders WH, but last time they did not have my 4.8mm push on female lugs.  They...

It should, shouldn't it?  LOL Getting there.  But the heatsinking has to be done too.  Even for testing. The second amp boards need only the 4 big trannies.  The resistors are done on the PSU. Wiring, crimping, heat shrinking...  Oi.  Better get started.  :)

I got 2 m of the most beautiful angle aluminium extrude to mount the transistors on.  38mm x 38mm angle, 6mm thick. Anyone want to buy transistor mounts for theirs?  I'll sell by length - 2 ohm per centimeter.  If you want, please PM me. The 2m piece hit me 260 ohms, so I'd love to recover...

I reckon you'd get by with really tiny heat sinks with this amp.  The heat sink I used for testing is very cool, and the trannies were like body temperature - but I was not pushing power.  I say heat sinks half my test size will be more than sufficient.  Maybe the ones I have are needed if you...

You know, I was looking for a nice power cord...  Hmmmm...

Well, all that will only come once both channels are done.  And this will be my first system, so I have nothing to compare it to...  And the pics will only be cool once I have enclosures...  It does not look any different at the moment from my dining room table setup pics I posted already.  It's...

yes, 35 V x 2, 500 VA total.  Beautiful piece of  copper. The transformer hums, but I have to get my ear close to it.  I imagine that the speakers' sound will drown any sound from the windings, as it will only be under load at full tilt anyway. My rails sit at 50V I think.  Could be 53.  Will...

And on my small speakers, it sounds great.  I can't wait to finish the second channel and have a listen on my bigger speakers.

If I may answer... The small caps and resistors are DC voltage detection on the speaker output - if any DC is put through to the speaker, this bit of circuitry latches and opens the relay, disconnecting the speaker - hopefully before it gets damaged. The small transistors on the PSU board are...

Great - thanks Rudi!

Yip.  Just replaced both transistors.  All is well in Geco Naim Avondale land yet again.  Too tired to measure the transistors for post mortem analysis. Gonna build the other channel now. Rudi, the push on spade lugs that solder into the board - where could I get the same ones? And, the...