JBL PB12 Subwoofer "thumps constantly" Questions

Question about Sunfire Audio Players & Recorders

Sunfire True Sub Constant Hum & Thump on Initial Signal

Sunfire True Sub Constant Hum & Thump on Initial Signal I have a Sunfire True Sub. It has a constant hum and puts out a deep bass thump when it received the first big bass signal from a song etc. Once

Question about JBL Audio Players & Recorders

7 Answers

Subwoofer "thumping" w. no audio feed

subwoofer "thumping" w. no audio feed My sub is making a "heartbeat" noise even with no audio feed. It is plugged in to a surge protector (I tried two different strips that are working with other ...

Question about Audio Players & Recorders

1 Answer

I have the accoustimas 15 surround sound. Even when not in use the subwoofer emits a constant thump. It's very low but irritating. What is causing this?

I have the accoustimas 15 surround sound. Even when not in use the subwoofer emits a constant thump. It's very low but irritating. What is causing this? That would be an electrical fault. Possibly an ...

Question about JBL Audio Players & Recorders

1 Answer

JBL PB12 Subwoofer has constant machine gun

JBL PB12 Subwoofer has constant machine gun "thumping" connected to system or not. Serial number begins with "AM0035" and was told these amps cannot be repaired.Is this true? What now? PB-10/12 using ...

Question about Bose Audio Players & Recorders

1 Answer

Bose acousticmass 15 sub-woofer making a noise

bose acousticmass 15 sub-woofer making a noise Recently my house experienced an electrical surge during a thunderstorm. The sub-woofer powers on, but just makes a constant thumping noise. I replaced ...