my Fender Rumble is rumbling !

#24
voided3 said:
Alternatively, it could be something trivial like the grille. I presume you've already ruled that out if you removed it when you beefed up the speaker mounting bolts, correct? If it turns out to be the cabinet itself, try taking a Quick Grip bar clamp and apply pressure to the cabinet from the outside while playing through it (acting like an external brace). If the clamp kills the rattle, you may have found your cause. Gluing + screwing in a few corner braces or braces from baffle to rear/side to side inside the cab will ensure rigidity.
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nope not the grill--it's fabric anyway and I tried pressing on that and didn't effect any change
 
#33
hi all. I just picked up a new Fender v3 200 Rumble. great bottom end with that 15" speaker. Love it, except for a pronounced rattle that resonates with the open A string (so not fret noise) and at other A notes too. I can make it stop by putting my hand on the metal back panel. I tried tightening all accessible screws, did not help. I think I'm going to carefully take it apart and make sure there's not a wire or something inside, laying against that back panel. If there's nothing like that, I'll try bending a little curve into that back panel. I'll update with my findings. I really want this app to work out.
 
#34
hi again, happy to report success on that Rumble 200, rattle on A notes. it was easy to remove the power amp assembly. The connector for the line voltage was a little loose, not locked down, so I reseated that and made sure the tab is locked. Could have been vibrating there? Then I noticed that Fender uses a thin foam tape between the amp chassis and the cabinet. So I added another layer along the bottom edge of the chassis.. Also gave a little bit of a convex curve to that bottom edge. I put it all back together, tightened all the screws. (Note, I'd already tightened all screws, before taking it apart. Wish it had been that easy.) I noticed now the panel flexes in just a bit at each of those screws along the bottom edge. So that should also stiffen up that chassis, keep it from acting like a passive resonator. So after this long story, which was really only 10 minutes work.... THAT RATTLE IS GONE!!! It was very pronounced before so I'm really glad. I'm still dialing in the tone but I can already tell this amp is gonna suit my needs perfectly. (Big upgrade for me, over my ampeg ba-110. fine little amp, but was maxed out, zero head room.) Hope this helps someone else.
 
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