Classic Tone Vox AC30 transformer set

Express, Liverpool, Rocket, Dirty Little Monster, etc.

Moderators: pompeiisneaks, Colossal

Post Reply
Doxie man
Posts: 97
Joined: Fri Dec 16, 2016 11:02 pm

Classic Tone Vox AC30 transformer set

Post by Doxie man »

Can any of you guys attest to using the complete set from Classic Tone ? PT/OT/choke ?
How does it sound in a Rocket build ? The last build I did I used their Wreck PT & OT. I used the 300V HT tap on the PT. The Wreck OT is a 6.6k primary ( better suited for an Ecpress I know) Im itching to do another Rocket and am considering their VOX set as it will be closer to true Rocket specs (280-0-280 HT) on that PT and a 4K primary on the OT. I was curious how others liked the overall tone using that set.
Roe
Posts: 1643
Joined: Thu May 31, 2007 2:10 pm

Re: Classic Tone Vox AC30 transformer set

Post by Roe »

THe OT is excellent. Sounds warm and rich with firm bass. Not too bright
www.myspace.com/20bonesband
www.myspace.com/prostitutes
Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s
User avatar
RJ Guitars
Posts: 2662
Joined: Tue Nov 14, 2006 3:49 am
Location: Los Alamos, New Mexico
Contact:

Re: Classic Tone Vox AC30 transformer set

Post by RJ Guitars »

They are not bad for the price, but I definitely prefer Heyboer for my Roads packages.
Good, Fast, or Cheap -- Pick two...

http://www.rjguitars.net
http://www.rjaudioresearch.com/
http://diyguitaramps.prophpbb.com/
Mark
Posts: 2957
Joined: Sat Jan 15, 2005 8:10 am
Location: Sydney Australia

Re: Classic Tone Vox AC30 transformer set

Post by Mark »

You wouldn't use an AC-30 set, you would use the Trainwreck power transformer and the A470 output transformer for the Rocket. When did 280-0-280 HT become true Rocket specs? I believe or 250-0-250 vac or 260-0-260 vac is the real secondary voltage. I have used a Classictone Trainwreck power transformer with a 260-0-260 vac secondary voltage and I have a rail voltage of 315VDC which is higher than the required 300VDC.

With 300VDC the output valves are running at 100% plate dissipation. This where you want the amp, higher rail voltages mean reduced output valve life and brighter tone. Timbre is subjective but I don't think the Rocket needs to be brighter. As far as adjusting the cathode resistor to suit, I've the changes need to be drastic to have a real effect. The difference between a 50 ohm and a 62 ohm resistor is really quite subtle.
Yours Sincerely

Mark Abbott
Mark
Posts: 2957
Joined: Sat Jan 15, 2005 8:10 am
Location: Sydney Australia

Re: Classic Tone Vox AC30 transformer set

Post by Mark »

They are not bad for the price, but I definitely prefer Heyboer for my Roads packages.
Interesting RJ why do you prefer the Heyboer transformers?

I have played amps with Classictone transformers and they sound fine. Is there something that I'm missing?
Yours Sincerely

Mark Abbott
Post Reply