Pavel Dudek's (Upupa Epops) amplifiers II

[Upupa Epops]

223 with heatsink...

 

[Upupa Epops]

Another project of last years is CLC1 ( CompromiseLessCrossover 😎 ), which is universal analog crossover, 2-4 way, in modular conception, 24 dB/oct in state variable principle, but it is not still ready... 🙂

 

[Upupa Epops]

Partially off-set...

 

[Upupa Epops]

Detail of balanced outputs amps...

 

[peranders]

Massive! You are in a white period? Did you see my yellow pcb's?

 

[Upupa Epops]

And PS for this equipment ( both - CLC1 and PS - are in full dual mono conception.... ).

 

[Upupa Epops]

Another look...

 

[Upupa Epops]

And at the last some pics from scope : 223 at clipping ( cca 100 W into four, 1 kHz....)

 

[Upupa Epops]

Dtto, 10 kHz....

 

[Upupa Epops]

Square wawe, 100 W into four, 10 kHz...

 

[peranders]

Very nice photos, Pavel! Do you have professional photo equipment, like lighting?

 

[Upupa Epops]

No P-A, yet not...I hope they are precise, which is your " standard "... 😎

 

[peranders]

With photos I meant the photos of the pcb's. You have been so busy posting that my post ended up in the wrong place.

 

[Upupa Epops]

Oh no, P-A, it is misunderstanding - my words was about your yellow pcb... 😎

 

[Brian Kingsbury]

Looking at all of Upupa's pics made me feel like retiring my soldering iron and just giving up because my work will NEVER look that good. Then I saw the power supply caps zip tied together and felt much better.

 

[peranders]

No P-A, yet not...I hope they are precise, which is your " standard "... 😎

They are really precise, my yellow boards. Extremely ultra high precision is my thing 😀

 

[Upupa Epops]

Case

Case is standard 3U one from Modushop, but my some parts are custom made from brushed stainless steel, cut by laser. Rear panel is overwrite by laser and coated against fingerprints...
Every my amp ( and crossover too ) you can remote from preamp. By multiamping they are switch on in turn ( for better inrush distribution ). Remote chain is galvanic separated ( no ground loop )....
Real panel...

 

[Upupa Epops]

And some enjoy for Spirtos...

I like sound of well made mosfet amps and this love lasts from the time, when I heard first EBs Hafler 280... 😎
I had build many types of mosfet amps ( Borbelly and Hawksford/Cordell ones with error correction - they are my perfection 😎 )...
Type at pics is my basic one ( designed in 96 ). Look at precize work of my friend Filip Honzarek... 😎

 

[Upupa Epops]

Bottom side...

 

[Upupa Epops]

All is gold-coated, including power mosfets... 🙂