Like

Subwoofer Thumping

 

Unregistered guest
What causes a subwoofer to "thump" when any listening mode is changed or when the receiver is turned off?
 

Silver Member
Username: Kegger

MICHIGAN

Post Number: 274
Registered: Dec-03
power
 

Unregistered guest
So there is nothing wrong with sub or connections/settings? It does this going from video 1 to video 2 etc. Not just during on/off.
 

Silver Member
Username: Kegger

MICHIGAN

Post Number: 276
Registered: Dec-03
i wasn't going to reply at all for you posting
on the thread about posting in the wrong post.
with a sub question.

but anyways it sounds like a ground loop issue.

you can try either removing the ground from the
subwoofer power plug and if that doesn't do it
try from the reciever.

many new recievers and subs come with a ground
removal strap or loop/lift because of these issues.
 

J. Vigne
Unregistered guest
What kind of reciever are you using? The thump when you turn the reciever off is from a muting circuit that should engage before the amp powers down. There should be a similr circuit to eliminate the thump between inputs. Some lower priced recievers may skimp on this. Where is the volume set when this happens? Does it occur when the volume is turned down before you switch?
 

Unregistered guest
I have a Marantz SR880 receiver. It does this at any volume level.
 

J. Vigne
Unregistered guest
I'm going to guess that the muting circuit in your reciever is faulty. Anything more than that would require a technician looking at the receiver to verify the problem. Are either of thses pieces new to the system? If so which one(s) and did the problem exist before this piece was added? Do you have access to another reciever to check the problem?
 

Silver Member
Username: Kegger

MICHIGAN

Post Number: 287
Registered: Dec-03
have you tried the grounds?

or plugging the sub into another power source?
« Previous Thread | Next Thread »

Facebook

Shop Related Deals

Directory

Main Forums

Today's Posts

Forum Help

Follow Us