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Post subject: Fitting a reverb tank
Posted: Mon Oct 19, 2009 12:32 pm
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Hey guys,
I am just wondering have any of you ever fitted your own reverb tank?
I have a Blues Deville and want to replace the broken tank.
Am I better giving it to someone who knows how these things work or is it a DIY job?
Thanks.


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Posted: Mon Oct 19, 2009 3:58 pm
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It's definately something you can do yourself. Here's a piece of an article from the October 2008 issue of Guitar player Magazine on removing and modifying the reverb tank. You can disregard all information relating to the mod but at least it explains how to remove the tank. Don't forget to unplug the connectors from the reverb tank to the amp.

A great-sounding reverb pan is also essential to having great reverb. Here is a modification to improve the sound of any reverb pan. The reverb pan (also called the "tank") resides within a vinyl bag on the inside floor of the amp. Remove the bag, open it, and slide out the pan. There's a cardboard cover on the bottom of the pan that is held by four small screws. With the cardboard removed you'll see that there are two transducers inside the pan--one drives the springs, and the other is a pickup that transforms the reverberated sound back into a signal voltage. Both transducers consist of a coil of fine wire wound around a small bobbin, with a steel laminated core inside the bobbin. Nearly always, the bobbin is loose on the laminated core. This results in the bobbin moving somewhat instead of all the movement going to the springs. To fix this, you need only to insert a small shim between the steel core and the plastic bobbin.


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Posted: Tue Oct 20, 2009 1:42 am
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thanks!
Do I need to drain the Caps or anything first??
(sorry im new to tube amps)


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Posted: Tue Oct 20, 2009 8:02 am
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No, you shouldn't have to drain the caps since you won't be taking the amp apart. I believe all you have to do is to remove the lower rear cover to access the reverb tank. From there disconnect the reverb tank from the amp and pull the tank out. On my twin I had to remove 4 srews that secured the tank to the cabinet and one screw that secured the tank harness to the side of the cabinet. Have fun, but if you are still uncomfortable take it to a tech and he might even show you how to do it since it is pretty simple.

Good Luck.


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