Pictures of your diy Pass amplifier

[Danger Mouse]

Here is my B1 with LSQR3 volume control.

I`ve build it 2 years ago works really well has a clean sound, no hum
Dont know why... but for me it sounds definitive better than the LSQR3 attenuator alone.


greets alex

 

[Anima999]

Nice. What's the LSQR3? I can't seem to find much reference to it anywhere.

 

[jacco vermeulen]

AnalogForum.de

(successor of Holger Barske's 'Pegelsteller' LSQR V1.0 and LSQR V2.0)

 

[CanAm Man]

Here is a link to the 4th version of my liquid cooling experiments. The amp is a BA-3 with 24 output devices in SE form. Don't remember how many months ago this started - but I think we have turned the corner.😀

In your picture.....that brass thing with all the plumbing to the right of the amp? Is that part of the cooling system, as well?? More cryogenic cooling, I'm guessing...........(!)

Nice job, Bob....

 

[valvesound]

Nelson Pass F4 clone

Recently completed this F4. Simply superb amp!





the transformer looks small but is a 300VA. Biased at 235mV over 0.47 and it amazing😀

 

[bcmbob]

In your picture.....that brass thing with all the plumbing to the right of the amp? Is that part of the cooling system, as well?? More cryogenic cooling, I'm guessing...........(!)

Nice job, Bob....

That's actually a Trombolityc Stabalizer. It's very effective in focusing an amp builders efforts while combining diodes, resistors, transistors and toroids. Sometimes referred to as a "What it's all about" device. 😀

Thanks for the props.

 

[vitalica]

Here is my XA .5 clone.

Transformer 1500W
Rifa 47000x8

This will be my last amplifier . Is ...phenomenal!
Thanks Nelson Pass - you're a genius !

 

[WalterW]

Just one word: WOW !!!

 

[emyeuoi]

Wow vitalica😱... I have no words!!

They look amazing, very very well done!

Congratulation! And the VU are simply superb... I am a little envious 😀

 

[duder1982]

That is some heavy artillery, congrats on the wonderful amps.

 

[weskoki]

Nice!

 

[valvesound]

Here is my XA .5 clone.

Transformer 1500W
Rifa 47000x8

This will be my last amplifier . Is ...phenomenal!
Thanks Nelson Pass - you're a genius !

WOW! very very impressive

 

[nashbap]

Very nice indeed!

Could you give some details about the schematic, where did you get those heatsinks etc? PCB?

Thanks.

 

[Preamp]

Just one word: WOW !!!

+1

 

[vdi_nenna]

Here is my B1 with LSQR3 volume control.

I`ve build it 2 years ago works really well has a clean sound, no hum
Dont know why... but for me it sounds definitive better than the LSQR3 attenuator alone.


greets alex

Nice work Alex!

 

[xLoff]

Here is my XA .5 clone.

Transformer 1500W
Rifa 47000x8

This will be my last amplifier . Is ...phenomenal!
Thanks Nelson Pass - you're a genius !

Just AWESOME, respect!!!
I am looking forward seeing your next project. We don't just build this things because we need them, do we... 😉
-- xLoff

 

[BobEllis]

Here is my XA .5 clone...This will be my last amplifier...

Famous last words.

Beautiful build. I like the pup who looks like he realizes that he is not the favorite thing in the house anymore.

 

[acamilicko]

Beautiful!!!

Just look into my avatar - I am seeking to build one of these one day 🙂

 

[bcmbob]

Very nice indeed!

Could you give some details about the schematic, where did you get those heatsinks etc? PCB?.....

+1 Very curious about what the front end is.

 

[Zen Mod]

we can't expect that someone post XA*.5 schematic in public

it's still in undisclosed category , by PL

that's my opinion , even if being most greedy boy ......