for some reason my cab sounds great then I fret the 3rd fret on E and it sounds insane. it may just be the room its in? and its rattling something on the floor. if i sit ion the cab it doesnt happen...any ideas?
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new cab rattles just with G on the e string
- Thread starter drewphishesp
- Start date
songwriter21
I have an obsession for wood. The musical kind.
I hate to say this, but I think this is just the way the cab will respond to the specific frequency of that note, kind of but not the same as how a bass has a weak or dead spot on a neck. You either tolerate it and/or remedy it somehow, or you get rid of the gear and find something that works better. This is a big annoyance at times, but it's trial-and-error, my friend.
Tune down 1/2 a step and see if it happens on the 4th fret of the Eb string.
What kind of cab?
Have you tried it in another room/building?
Bracing, tightening screws and possibly caulking inside the cab could help.
Have you tried it in another room/building?
Bracing, tightening screws and possibly caulking inside the cab could help.
- Feb 12, 2006
- 60,951
- 5
- 220,594
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
If sitting on your cabinet keeps it from happening, it's not a cabinet tuning issue but possibly loose hardware, loose brace or joint, or something purely mechanical in nature.
yeah...im gonna try it in a different room. I think it may just be the floor of my old house is vibrating bc of the frequency under the cab...
Things resonate to specific vibrations, call that the "G room". Least it's not the cab
I've a PF115HE that rattles too (or at least it used to) when playing B. Couldn't hear it from the players perspective, but I walked 20' out front to the audience perspective and it was extremely noticeable. Quite bothersome actually.
After much troubleshooting and hunting for the buzz, I fashioned a brace that when jammed between the baffle just below the HF horn and the rear span brace, has relieved all weird noises. It is now a nice sounding cab
Just writing about my experience so you understand that you're not alone in the maddening quest for a rattle free cab.
Also, my cab is sealed, which in the end means that it needs more bracing to keep it from eventually beating itself to death.
After much troubleshooting and hunting for the buzz, I fashioned a brace that when jammed between the baffle just below the HF horn and the rear span brace, has relieved all weird noises. It is now a nice sounding cab
Just writing about my experience so you understand that you're not alone in the maddening quest for a rattle free cab.
Also, my cab is sealed, which in the end means that it needs more bracing to keep it from eventually beating itself to death.
He already isolated the problem to the room. Now needs to get some rubber under it and isolate the cab from the floor 
Got basement? Maybe snug up the floor jacks. I set mine tight and level so I could walk around without stuff shaking, but now a small dog trotting in the kitchen hits resonance and shakes the floor.
For now, try anything soft under it, preferably rubbery. Even a couple of folded thick towels. Different places in the room may help.
Got basement? Maybe snug up the floor jacks. I set mine tight and level so I could walk around without stuff shaking, but now a small dog trotting in the kitchen hits resonance and shakes the floor.
For now, try anything soft under it, preferably rubbery. Even a couple of folded thick towels. Different places in the room may help.
I suggest starting with something OP has. Grab the wifes pillow, her cat, her excercise pad, her fur coat, etc. The sound should change if not go away.
My bigish dyi 1x15started out vibrating everything when I was doing fart out testing, but one note stood out like this case. IIRC open E. Moving it stopped the vibration. Foam rubber solved the resonate problem. I'm pretty sure it's a slab of memory foam from a matress topper, but might be a slab of high density chair foam.
For something perminant you probably want something more stable with a 2 x 15. Thinner but more dense. I'd get a pair of returnable gardening kneeling pads to try out.
You may end up having to get it up off the floor more than the thickness of the pad.
My bigish dyi 1x15started out vibrating everything when I was doing fart out testing, but one note stood out like this case. IIRC open E. Moving it stopped the vibration. Foam rubber solved the resonate problem. I'm pretty sure it's a slab of memory foam from a matress topper, but might be a slab of high density chair foam.
For something perminant you probably want something more stable with a 2 x 15. Thinner but more dense. I'd get a pair of returnable gardening kneeling pads to try out.
You may end up having to get it up off the floor more than the thickness of the pad.
i'd set the cab on a bed ... or a big pillow , to try and isolate it from the floor ... look/listen for loose screws/nuts/bolts/feet/handle ?? ... i even had an internal wire vibrate against the speaker cone .. !?!
It just means that the resonant frequency of the floor is a low G. The cab isn't causing the floor to vibrate, it's the other way around.
Not worth the money. What it claims to fix is a myth. Cabs don't cause the floor to vibrate by mechanical coupling, floors cause cabs to vibrate by mechanical coupling. The cheap and easy fix for that is a piece of yoga mat cut to size. Another piece between the cab and head will keep the head from rattling.
