Photo Gallery

[jean michel]

Hello All ...

my proto " The Cube " SE UL PCL 805 ... 2 x 2 W to 1 Khz for 8 Ohms

 

[TonyTecson]

lazy saturday noon listening to my newly rebuilt triode
wired 6L6 Pset driven by6BQ5 pentode at input.....
Rubber Soul, in one of my favorites from the Fab4.....
each 6L6 biased to about 15 watts of plate dissipation....
total power draw from the line is about 160 watts.....

 

[donnyab]

tony, is that an unusual set-up to drive a 6L6 using el84 since el84 is also considered to be an output tube.

 

[TonyTecson]

tony, is that an unusual set-up to drive a 6L6 using el84 since el84 is also considered to be an output tube.

power tubes can also be used as small signal tubes, nothing unusual about it....
when so used, they run very long lives...

btw, i made the OPT and power traffo for this amp....

 

[usa4356]

Nice Amp...can you share the IN-13 VU meter schema?

 

[Junm]

Thank you very much...i have a dozen of them so now I can use them as extra added attraction to my GK71 PP amp..

 

[Davec113]

WONDERFULL JOB!
Care to show us the inside?

Gorgeously crafted! More a piece of art than a preamp!

How do you do the USB connection? Love to've that on mine!

Great job!

really nice my fave is the Alu one

Thanks! Will take more pics.... wood boxes on top house power toroids for B+ and 12V for the LDR, wrapped in mu metal. Chassis is coated with carbon conductive paint on the inside for shielding as well. USB is for firmware updates on LDR controller, there is no DAC onboard or anything.

Other features are Clarity TC power supply caps for the tube buffers, Jupiter copper output caps, AmTrans carbon film resistors, Mills for the PS and cathodes....

The alum chassis is my friend Ryan's, and uses spalted maple, the copper one is mine and is made of burl maple. The corners are walnut.

I'm very happy with the sound quality, I've tried it out with and without the tube buffer and I definitely prefer it with the buffer, but the ACF-2 is a great circuit and I used good parts... otherwise there is the potential for a buffer to do more harm than good. The Tortuga LDR sounds great on it's own though as well.

Measurements were excellent, the buffer is very low distortion and produces clean square waves.

 

[QRanc]

Dynaco mkIII,s built in the early 90's
Used a curcio circuit converted to 6201's
Didnt like the sound at all
Put them in a box and recently went over whats here. Reduced b+ to 485v and a few minor resistor mistakes and new tubes
Major difference!

What kind of finish did you do on the wood chassis? It's exactly what I'd like mine to look like.

 

[Wavebourn]

Gubernator - 71 amplifier

More info here:

https://www.facebook.com/Wavebourn/

 

[AVWERK]

Qranc
Its 3/4" koa and just sanded smooth plus Watco oil, well penetrated.
No clear coat of any kind
I used a wax to buff it out- it escapes me at the moment since its been quite a few years

Regrards
David

 

[Wavebourn]

Here is a new amp playing:

https://www.facebook.com/Wavebourn/videos/vb.371503329574641/1148575651867401/

 

[mhouston]

Avwerk, very nice.

 

[usa4356]

Here is a new amp playing:

https://www.facebook.com/Wavebourn/videos/vb.371503329574641/1148575651867401/

Very nice.deep bass

 

[chris73]

DIY Micro Guitar Tube Amplifier
Work in progress needs tuning... (but i think it will remain as is...)
Preamp runs cold. Needs tuning for more current and a bit of more 3rd harmonic.

It uses a 6112 tube for the preamp and an 6G6G tube for the "power" section.









Bonus Video, enjoy!
https://www.youtube.com/watch?v=CSizkeTcDNU

 

[mhouston]

Every nice, I like the cloth surround. I built a Fender champ which is just as easy as this one. It uses a 6V6 and 12AX7.

 

[chris73]

Thank you mhouston. Yes a 12ax7 with a 6V6 i think is the "standard" for home use.

 

[azazello]

Thank you mhouston. Yes a 12ax7 with a 6V6 i think is the "standard" for home use.

Standard tubes give you standard sound....

 

[Wavebourn]

Standard tubes give you standard sound....

Yes, especially 12AX7 which is standard for guitar amps.

 

[Jnouw]

Little compact design using PCL86 tubes for 2 x 10W/channel class A.

 

[matejsirk]

Little compact design using PCL86 tubes for 2 x 10W/channel class A.

Very very nice. Could you share schematic?