Reverb Tank

[au_rick]

Hi All,
just bought a cheap amp for my practise room and it's missing the reverb tank.
Are these fairly generic other than the difference in the number of springs ?

 

[poor man's burst]

They are not. There are a lot of variations, not only in size, number of springs and decay length, but more important, transducers impedance and grounding, which should match the send and recovery circuit impedance.

 

[El Gringo]

Accutronics is what Fender use for the spring reverbhttps://www.tubesandmore.com/search/node/reverb%20tanks

 

[charliechitlins]

Accutronics quality has unfortunately suffered greatly in the past few years.
I'm liking MOD tanks.

 

[au_rick]

They are not. There are a lot of variations, not only in size, number of springs and decay length, but more important, transducers impedance and grounding, which should match the send and recovery circuit impedance.

Thanks for the heads up.
Can I check impedence across the RCA plugs with a meter or do I need to look up the specs of the amp ?

 

[PaulD]

No, multimeters measure DC resistance and measuring the DC resistance across the plugs will not tell you what the input and output impedance of the amplifiers reverb circuit is (DC resistance and impedance are not the same thing). You either need to know the specifications of the amplifier or use a signal generator and oscilloscope to measure the output and input impedances of the circuit. https://learnabout-electronics.org/ac_theory/impedance73.php

 

[poor man's burst]

Reverb tanks have a code stamped on them, which gives all the tank's specs (number of springs, decay length, transducers impedance, grounding schematic, etc...). It looks like 9AB2C1B. Letters and numbers change according to specs. AFAIK, all the reverb tank brands (Accutronic, Mojo, Beltone) use the same code. If you can find someone who has the same amp and can check the code number for you, then you could find the tank you need.

 

[Wally]

One wonders what amp the OP is working with, right?????

 

[au_rick]

One wonders what amp the OP is working with, right?????

It's actually a Crate GX series.
Thanks for the replies, I think I'll try a few and see what sounds best.
I've never cehcked the model numbers but I love the reverb on my Marshall JCM's but can't stand the reverb on my Mesa Boogie

 

[renderit]

Yes, reverbs are all over the place.

That is why I got the Victoria Reverbrato.

Vibratos are all over the place as well.

This has them both covered in spades and now I don't have to worry if an amp has one that sucks.

Yeah, it means you have another piece of equipment to lug around, but the SOUND, Oh My!

 

[Wally]

here’s an overview of reverb tanks of different type.

Spring Reverb Tanks Explained and Compared | Amplified Parts

www.amplifiedparts.com

Here is the online Catalog. You might get in touch with this source. They might very well
know what tank you need. Or…you can search through the tanks in the catalog and you will probably find your amp listed in the literature of the correct tank as to application. Good luck….I did not find any info in a a quick search for a reverb tank for any GX.

Reverb Tanks | Amplified Parts

Browse products from the Reverb Tanks category - listing products sorted by popular, page 1

www.amplifiedparts.com

 

[bern1]

Yes, reverbs are all over the place.

That is why I got the Victoria Reverbrato.

Vibratos are all over the place as well.

This has them both covered in spades and now I don't have to worry if an amp has one that sucks.

Yeah, it means you have another piece of equipment to lug around, but the SOUND, Oh My!

Looks like a cool piece of kit. Looks like the full reverb circuit. What kind of term circuit is it?

 

[renderit]

Full Vibrato with actual tone shift.

The Reverb is based on the 65 Blackface Twin and the Vibrato is the 63 Brownface Concert.

The reverb settings are awesome as they let you "mix" the "size" of the room and the Vibrato lets you go from a very usable "slight" to a mind bending tone.