AC-30 Lyle Caldwell mods link.

Mark · Post by **Mark** » Thu Mar 05, 2015 11:07 am

I've seen people mention it but not put the link up.

http://www.ac30-guide.com/?page_id=524

jcsifu · Post by **jcsifu** » Thu Apr 30, 2015 4:12 am

Here is the corresponding schematic, hard to find on the web so thought I would post it.

Mark · Post by **Mark** » Thu Apr 30, 2015 10:07 am

Thanks much appreciated.

rp · Post by rp » Thu Apr 30, 2015 11:35 am

A friend bought on of these used, I'm not there to tweak it for him but I was wondering why the h#ll Vox would change the 220K plate resistors on the input tubes to 100K, that really are part of the Vox sound. All I can figure is that since the two channels are mixable in the AC30CC (they are modded to be in phase in the CC version) maybe Vox found that 100K allowed the mix function to sound better. Something to keep in mind if you change it but like the blend function.

schaublin65 · Post by **schaublin65** » Thu Apr 30, 2015 1:36 pm

Hi,

thanks for this. Interesting to see.

take care..

John

tenchijin2 · Post by **tenchijin2** » Sun May 03, 2015 2:46 am

I have done these simple mods myself! I didn't do a careful A/B but I can say the amp has a very interesting character now. Very full and rich sounding. I'm currently in the middle of installing the London Power scaling kits in the amp now.

The Amp Garage

AC-30 Lyle Caldwell mods link.

AC-30 Lyle Caldwell mods link.

Re: AC-30 Lyle Caldwell mods link.

Re: AC-30 Lyle Caldwell mods link.

Re: AC-30 Lyle Caldwell mods link.

Re: AC-30 Lyle Caldwell mods link.

Re: AC-30 Lyle Caldwell mods link.