I have performed this mod easily and quickly and with great results:

Open up the bag that your reverb tank sits in (requires you to unscrew a few things)…then pull out the RCA cables. The Beltron reverb unit is screwed into a block of wood.

Remove the small block of wood and attach it to your new Accutronics 8EB2C1B unit (the holes match up perfectly).

Re-attach the RCA cables then put the tank back in the bag. You can get the new reverb at tubesandmore.com. The stock verb tank has a killer as in bad tank that has a delay of like 10 seconds. The new one has like 2.

http://www.justradios.com/uFnFpF.html

Cheers,

Ted

The bright cap mod really takes some of the shrill treble out of the amp and for the better.

I replaced the Warfsdale stock speaker with an Eminence Red Coat “Red Fang” 8 ohm alnico speaker. I went with the Red Fang because the price was $149.00 at “The Corner Music Store” in Nashville. The cheapest I found a Celestion Blue was $250. The Red Fang made a huge difference. This is a very balanced speaker that has smooth highs and rounded lows. The mids don’t give you the ice pick sound either. For the budget conscious, the Red Fang is a great choice.

I had a guy at the local repair shop jumper the board and it now works well. Looks like I found a guy to do the rest of the mods.

Thanks for your help.

TJ

It is possible to damage PCB boards and components if you overheat them with the soldering iron.

Check to see if you have continuity between the connector ribbon and the potentiometer, as this will see if you’ve damaged any of the tracks connecting to the potentiometer (TB Volume control).

If any of the tracks are damaged you can fix them by scraping away the green coating and exposing the copper track underneath. This will allow you to solder directly to the copper track and make a new connection.

Unfortunately I don’t know much about the Heboer transformers, apart from the fact that they are a well made unit, and well regarded on the forums.

You should be fine picking up any transformer that’s suited for the AC15, just pick one that’s got the appropriate output impedance configurations that you are after. The fact that it’s not made for the Custom Classic just means that it won’t be a drop-in replacement, so there will be some drilling involved. Usually you’ll need to drill 3 holes as you can use one of the pre-existing holes.

As far as the wiring colours go they are not necessarily standard, so you’ll need to make sure you get a wiring chart from the manufacturer, so you know what wire needs to go where.

I went into my Vox AC15 and heated up the bottom of the pots board and undid C26. I pushed it through with the tip of the soldering iron.

I put the unit back together and if fires up but now the top boost volume does nothing. The master still works, and the tone controls work, just not the top boost volume pot. I hope I didn’t goof up the board by sticking the iron through the little holes of C26 to push them out. Have any ideas?

Thanks,

Ted