Pure Delight

[Alain Dupont]

>>John-china
>>beautiful amp.
>> i want to know what your IR mosfets are. please , let me see
>>close picture of them.thanks

Well john. these are International rectifier IRF 232 and IRF 9231
in TO-3 package. Bought the paired series of 52 total from a DIYer
in US.

The amp is closed and running playing Rackmaninov, but I can show you the spare...

Regards.

Alain.

 

[Alain Dupont]

John-china

A better picture...

Alain.

 

[sivalleydiyer]

WOW Alain,

I must say I'm impressed. Its great to see those transistors go to a good home since I never got around to using them

Hope you many years of enjoyment from your amp! You deserve it! The A75 is definitely not an easy one to put together.

Norman

 

[Nat Riscica]

Hello Alain,

only two words: simply wonderful!

Nat

 

[Alain Dupont]

Norman, and Nat,

Thanks.



I had last night great enjoyment, I rediscovered some old vinyl ;
enjoyed the music. ... I have no more pictures for you

Now ready for a X-BosoZ {I need a great DIY preamp for El Diablo (A75)}

PS: I definitively do not recommend this amplifier to a beginner, but it will
be a great joy for all the others... exept, may be X mens...

Alain.

Hourra pour Nelson!

 

[roddyama]

... exept, may be X mens...

What about the Aleph-Team? I pity the foo.

 

[Alain Dupont]

roddyama,

Talking of X mens I was thinking of the great X-Aleph group, my only regret is that the Aleph-X arrived too late, I had already started my A75...
But I ordered 2 Aleph-X PCb's, and I will make a try to X-mania !!!

Possibly bi-amping the Martin Logan, A75 for bass and Aleph-X 2*60 watts for the electrostatic pannels...

A+

Alain.

 

[Alain Dupont]

I am Back!
After a week of tweakings....

51/53 degrees after 2/3 hours, about 2 amp bias by channel...

It works perfectly, except a IRF 232 I had to replace.... Mr Static I think !
and repositionned the rails DC relay's back to back for a better look.
The cover fixed with screws...

A place in the rack, just for "El Diablo"...

The bass are tought, the mids and heights a delight . I rediscovered
and enjoyed again a lot of my prefered vinyl's, I hope enjoying it for a long time. And I you want to drive your speakers with Authority, it's the right amplifier.

Thanks to Nelson and Norman for providing such thrilling projects.

I am a happy DIYer...

Cheers.

Alain.