I have a peavey xr 600e that made a pop noise while playing now sounds distorted and don't sound loud at all. changed speakers but still the same, disconnect reverb tank but still no change. any ideas

SOURCE: popping noise

Your welcome. I'm glad I could help and if it came that way marshall should do it for you.

SOURCE: run a sub woofer to a peavey board

I would recommend using a separate active crossover such as the Peavey 23XO and a separate amp for your subs.

SOURCE: Mackie SRM450 speaker keeps making a 'popping' sound

First thing is to verify that a ground loop from your driving equipment is not causing the problem. Easiest way is to drive it with a BATTERY operated little CD player so no ground loop could exist.

Verify that your power cord is in tight and try another cord to verify it is OK.

Beyond this, service is probably required. If unit is out of warranty, you could have a person open it up to see if anything is obvious.

A possible proble is bad connectors or worse, a cracked circuit board.

Analyzing if noise is from both the woofer and high range speaker is a first step.

SOURCE: How to remove amp from cabinet? reverb doesn't work.

SOMETIMES the handle screws must be removed as well.

I have taken a lot of these out and the key is to figure out which direction it comes out... MOST are out the back and sometimes a board across the back has to be taken off with four screws to clear a transformer.

FIGHTING getting the thing out when it catches on the Tolex covering is the USUAL problem. Takes patience and sometimes a blade to hold the Tolex back.

USUALLY the speaker baffle stays in place.

SOURCE: My Typhoon makes this supe

Definately sounds like a manufacturing issue, Contact the manufacturer and get a free new one, unless you dropped it or something and it's your fault.