Photo Gallery

[sarrisk]

The 2A3 amp

An externally hosted image should be here but it was not working when we last tested it.

some more detailed photos and a video here

2A3 Tube Amp Part I - YouTube

 

[ovpopov65]

Happy new year!
I recently graduated ...

 

[mhouston]

ovpopov65: looks like scanspeak drivers. Timbers got a nice strong grain.

 

[ccronn]

Where did you get

Where did that wood duck with the boots come from, lol!

Happy new year!
I recently graduated ...

 

[ovpopov65]

ovpopov65: looks like scanspeak drivers. Timbers got a nice strong grain.

Yeah, right - it skanspeak 18w8531g-00 d3004-660 000

Where did that wood duck with the boots come from, lol!

This is a souvenir from Croatia. I brought it last summer.

 

[stajo]

Prototyping

Can anyone guess who this guys new friends will be?


A clue is that they have a slight cockney accent.

/Staffan

 

[Salas]

Can anyone guess who this guys new friends will be?


A clue is that they have a slight cockney accent.

/Staffan

What is this guy for starters? The preamp taking shape?

 

[stajo]

What is this guy for starters? The preamp taking shape?

Thats the current plan. House in the back is for the trafo to live in. Oval towers is 630/4uF PIOs. Round is electrolyt dummies. Two 11 H piled, they will get a house to. And a neat old AZ11 that have campered with the trafo since my granddaddy was young. And the 6V6es.

EMC and stuff will come as an express mail but thats what the proto is for working with.

Who will his mates be?

Staffan

 

[Salas]

Leak?

 

[Zen Mod]

naaah .... not Sandwich

Quad

 

[stajo]

Zen Mod wins!

 

[Salas]

Quad ain't Londoners I think.

 

[Zen Mod]

Quad ain't Londoners I think.

certainly

but Leak amps are Fugly!-er than QII

 

[Salas]

But he said slight cockney. That spells London. Leak are west end, but it was closest. Thought about Quad first glance, but cockney? Those are Cambridgeshire.

 

[stajo]

Quad ain't Londoners I think.

No Huntingdon, to the north. So not cockney but that muffly british sound (that I dont think you like that much)

 

[Salas]

My KT88 trioded diy goes 200kHz -3dB with just 8dB feedback and uses bjt cascode cathode ccs in its phase splitter, so you understand I lean more to the American school in tube amps approach.

 

[Zen Mod]

stajo - are you going to make QII knock-offs , or something "just" similar ?

nice work !

edit :

@ Salas - you are not smart , you just have good OPTs



( care to put that tube porn somewhere ? )

 

[Salas]

Its about driving the output tubes grids firmly mostly I think. OPTs are class B Audionote UK as they came on a Serbian Korato I converted.

 

[Zen Mod]

........ I think.............

you know that I know that you know ...... not just think

....... they came on a Serbian Korato I converted.

I'll be good Serb , so I would not say that you made wise decision



edit : I always had impression that VTL-like ( olde Marantz roots) topology is best bet for "safe" tube amp ; of course , spiced with CCS here and there

and that can be called both Yank and Jolly Good

 

[stajo]

stajo - are you going to make QII knock-offs , or something "just" similar ?

nice work !

Thanks! Those are original chassies, but the electronics were pretty messed up when i bought them. Chisel rectifyers etc and some new handmade OPTs by a swedish very cunning guy. Copied the originals but made them sturdier. I was thinking of GZ34, newer resistors, check caps etc. As some chassiethings were missing im gonna make in and outputs as I please it. Its gonna sit on a narrow shelf over my working desk at home so it will be flat side out for all 3. Mostly to be used for listening when Im working and testing amp-builds on now and then.

/Staffan