GTFO - Full tube high-gain pedal (2x 12AX7)

[defaced]

I use ac heater sound better than dc heater. any idea to get more gain

I'd love to hear samples of that one. 

[pravudh]

I use ac heater sound better than dc heater. any idea to get more gain

I'd love to hear samples of that one. 

quick sound sample.http://soundcloud.com/circuitfx
start with ac heater then dc heater you may say it not different,try with yourself with tube amp.

any chance for a sound sample on bass?  Also, how/what do I adjust pot 5 to on the PS?

Thanks!  I will build this sometime this winter once the snow flies and the motorcycles are put away

for adjustment, i adjust pot about 200v. to get fuller sound but lessdist, if lower than 180v. sound thin but more bass and dist.

cheer.

[gtudoran]

Well the only difference that i hear is a little more HUM on AC ... don't wanna start a flame regarding this, but IMHO i don't hear any difference. And yes, the trimmer is for voltage output, i can go from 100v to 320V without a problem.

Best regards,
Gabriel Tudoran
Analog Sound

[Minion]

That design is sort of simular to the 2 Channel amp I just built ......



Mines a 2 channel amp , with relay channel switching , it uses two 12ax7 per channel and runs off a 300VDC CRCLCRC PSU and 12.6v AC heaters , It also has an FX loop and a 60w into 4 ohms LM3886 power amp ...... everything is made from home etched PCB"s using my own layouts and designs .....





Sounds great ........

Cheers

[pravudh]

I use 250v. ps cap,that why i adjust trimpot 200v.
here my old sloclone 50w. build it for 5 year ago that i play with GTO



Uploaded with ImageShack.us
Regards.

[gtudoran]

Another clip recorded by a friend of mine, this time a little bit more on the metal side.

Enjoy!

Best regards,
Gabriel Tudoran
Analog Sound

[deadastronaut]

^ nice demo....sounds cool detuned too.  \m/    \m/

out of curiosity what is the tone control on that?....

edit: scrap that i see the schemo!..

[gtudoran]

^ nice demo....sounds cool detuned too.  \m/    \m/

out of curiosity what is the tone control on that?....

edit: scrap that i see the schemo!..

Thank you, you have all the details in the PDF document.

Best regards,
Gabriel Tudoran
Analog Sound

[deadastronaut]

 

[gtudoran]

And a last video regagarding GTFO - Analog Sound GTFO vs. Blackstar Dual HT made by the same friend

I would like to hear some opinions.

Best regards,
Gabriel Tudoran
Analog Sound

[deadastronaut]

nice..

i like your GTFO better, has more depth...the HT seems a bit cleaner and lighter on the dirt....just my 2p...

[zambo]

+1 on the GTFO. sounds a lot better to me.

[HOTTUBES]

yep , the GTFO sounds warmer to my ears also ....very cool man !!!

[meffcio]

I converted the svg files to pdfs, if anyone wants.
http://www.mediafire.com/?qz3kybxy2ye32gx
http://www.mediafire.com/?6cv97k97whcdj5t

[vasso123]

Hello guys!
I'm pretty new,and I'm confused with something. An original supercharger runs at 320V,but somebody here said that he sets the voltage from the SMPS to 180~200V,isn't that a bit too low?
If I make this SMPS,can i get 320V out of it?
One more thing,in the instruction pdf it says 12V DC operation,but the SMPS works at 18V?

[gtudoran]

Hey vasso123 - with this smps you can have 350-400v with a 12v DC input, the voltage on the tubes anode is about 160-180v. This schematic is not a GTO clone, is related with GTO only by the fact that has 4 gain stages ... but not the same filtering. So you can build the pedal according to the documentation - oyu have also a video recording to see how it's sounds.

Best regards,
Gabriel Tudoran
Analog Sound

[vasso123]

So I can make the supercharger with this SMPS? I showed my professor this SMPS and he said that's something fishy around this schematic,so can somebody confirm that the schematic from the instruction pdf is valid?
And can somebody explain how does it work?
Thanks

[DavenPaget]

So I can make the supercharger with this SMPS? I showed my professor this SMPS and he said that's something fishy around this schematic,so can somebody confirm that the schematic from the instruction pdf is valid?
And can somebody explain how does it work?
Thanks

Only way is to test it yourself , it's a just a SMPS basically .
You think most professors would think it's okay ? No .
This sort of SMPS's are kind of CHEATING .

[vasso123]

Okeeeeeey,but can you explain me how does it work? 

[DavenPaget]

Okeeeeeey,but can you explain me how does it work? 

It would be quite hard to completely explain , but what most SMPS's(AC) is to rectify the signal first , then chop it up , then followed by transformer then rectification .