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Old 4th August 2020
  #3
Deleted dc388e1
Guest
Quote:
Originally Posted by joythirstpop View Post
I recently got a Vox AC30 cc2, and the reverb tanks are notoriously crappy and frequently replaced. Before this amp, I was pretty accustomed to the spring reverb coming from a Fender Blues Jr, and tbh I miss it a lot.

Since then I've learned that I really like drippy, springy reverb, and that it's difficult to emulate without buying an expensive AF pedal. However, I like my new Vox and I'm not going back to the Blues jr.

This may sound like a stupid question, but I've looked a bit and can't find any internet threads about anyone who has done this - is it possible on my vox to switch the reverb tank to one that will sound more like that Fender spring that I'm used to? Or maybe even more drippier than that?

Thank you for your help!!!!!!!!!!!!
Hi,

Is the CC2 the older Vox, with the single input, or the more recent version with the Normal/Top Boost inputs?

Some years ago I had an AC15 CC2 (I think - it was the older version with the single input). I had similar issues with the less than excellent reverb tank, so I switched it for the tank from a Laney VC30.

From memory, the reverb unit from the VC30 was a 12" tank, whilst the tank from the AC15 was 8" or 10". When fitted to the Vox, the 12" tank produced a much lusher reverb than it's predecessor.

One thing to consider - different reverb tanks have different input and output impedences. I played my AC15 with the Laney tank for years without any issues, but I may have been lucky.
I don't think mismatching impedences will harm your amp (although best ask a qualified repair person to be on the safe side), but a mismatch may cause crappy sound.
Valve reverb tanks typically operate on tens of ohms, solid state tanks hundreds or even thousands. The tank in your Vox will be driven by an op-amp, and so will expect a few hundred ohms at least.

There are also myriad grounding schemes, although these can often be jumpered to suit. Here's a guide to what the code on a standard Accutronics tank is telling us:

https://www.amprepairparts.com/reverb_numbering.htm

If you have the code for your unit, you should be able to search out a matching tank with longer springs.



Edit: I took 'drippier' to mean smoother/lusher. It occurs to me now it may mean splashier/nastier. That being so, the advice still applies, just look for a shorter tank instead!

Last edited by Deleted dc388e1; 5th August 2020 at 10:17 AM.. Reason: Clarification.