Buffeting noise from Rectoverb.

[BoogieTom]

My Rectoverb combo series II makes a noise like a crosswind wind against a blanket or buffeting sound coming from the speakers. It is noted if I lightly tap on the top or side of the cabinet or after I play my guitar through it. I recently bought this used. I hope it isn't too much to fix. Does anyone have any Idea? Thanks: Tom.

 

[bendo]

First, if you are not comfortable with working in a tube amp, take it to a professional, there are voltages in there that can KILL you.

If you bought it used, re-tube it. It's likely a tube going microphonic.

With the amp on, and off of Standbay, take a pencil with an eraser end, and tap each tube. If it makes a noise through the speaker, you have you culprit.

You'll likely need to remove the metal spring caps from the pre-amp tubes first.

 

[BoogieTom]

Yep. The tubes definitely need to be replaced. From the tube placement diagram, V5 and one of the power tubes are bad. The power tube was really touchy. I'll order a complete set today. I'll probably just order Mesa tubes. Even with tube microphonics the amp sounds great. Thanks for your help. I've learned something.