| Author | Message | ||
| george_wright
Intermediate Member Username: george_wright Post Number: 103 Registered: 3-2005 |
I have a QSC RMX2450. It's all alone in a Gator two-space rack, with rear rack-ears installed. The amp rack sits on top of an Acme B4 and under a Gator six-space rack with other electronic toys in it. Any notes on the B or E string at any appreciable volume cause the face plate of the QSC to vibrate loudly. I can eliminate the rattle by pressing on the face-plate between the on/off switch and the fan exhaust grille. I've ruled out vibrating latches---it's the amp faceplate. A layer of bubble-wrap between the amp rack and the cab raises the volume level necessary to cause the vibration, but this isn't a practical fix. The vibration still occurs at anything above bedroom practice volume. So.... Two questions. First, is this common with QSC RMX's, or do I have a lemon? Second, are PLX and PLX2 models (which, as far as I can tell from pictures, have a much beefier face plate) less likely to vibrate in the face plate? (Cross-posted to talkbass.) TIA | ||
| jacko
Senior Member Username: jacko Post Number: 781 Registered: 10-2002 |
George. My PLX faceplate doesn't rattle but, when I first got it there was a rattle from inside. I eventually traced it to the fittings that held the circuit board in place - it was as if the board was made from a slightly thinner material if you get what I mean. I've 'fixed' this by putting blobs of epoxy on the board/fitting which has removed all rattles. Graeme | ||
| george_wright
Intermediate Member Username: george_wright Post Number: 104 Registered: 3-2005 |
Thanks, Graeme. I'll unmount the amp from the rack over the weekend and check it out. | ||
| davehouck
Moderator Username: davehouck Post Number: 4331 Registered: 5-2002 |
At one point I had a rattle with my PLX. However, I no longer put my amp on top of my speaker cabs, and thus no longer have a rattle. |
