Hiraga "le monstre"

[njepitt]

I've drawn the final circuit - by hand, I'm afraid, since computer rebuilding is slow... If anything is unclear let me know and I'll try again.

This also seems like a good moment to post a couple of photos, so these follow in the next few posts.

[danieljw]

nice work Nigel,

Thankyou for posting your circuit.

I look forward to seeing the pics

-Dan

[njepitt]

First two photos are of the PSU. Separate case, intended to be hidden out of the way.. I also designed it so it could handle two monoblocks or even two stereo amps to biamp... although not with separate circuits for the channels.

[njepitt]

I should add, this same is used for both the amps shown in the photos below.

[njepitt]

Next up are photos of the first Monstre - not the circuit drawn above, but the one using 2N5462/2N54?? jfets and TIP3055/2955 discussed some days ago. The case is much better looking though.....

[njepitt]

Same amp, rear view... PLease don't ask why the DC input socket looks wonky.....

[njepitt]

And now for the amp we've actually been talking about.... The case is made from a junked car audio power module. (Around here, maybe everywhere, there is a fashion for sound levels in cars that would deafen people on the street at intercontinental ranges. A corollary of this is that the power modules burn out regularly, which is a handy source of heatsink material for free....) The object here was to try and do the amp for as near to free as possible, and to invest more time on the eletronics and less on the case. Of course, Spousal Acceptance Factor is at near-record negative levels....

[njepitt]

Detail inside....

[njepitt]

And from the front. Any remarks or criticisms of the builds v. welcome.
I should add, at some point I hope to post more detailed remarks on the sound.

Many thanks for all the help.

Nigel

[danieljw]

hey good idea with the plug in plug out connectors for the small signal stuff !!

-Dan