Home |
Search |
Today's Posts |
#1
Posted to rec.audio.tech
|
|||
|
|||
Amp ok until motor is started
I installed a subwoofer amp, at the moment I am using the high level input
on the amp. That means I'm running wires from left and right speakers to the amp input connector. So I have the rear speakers in parallel with the sub amp inputs. All works fine when the ignition is turned on, but when the motor is started one of two things happens. 1) The volume goes way down on the sub woofer. When #1 happens the rear speaker volume is also very low. 2) or the subwoofer starts a low frequency rumble. Once the car is started I can disconnect the subwoofer input then plug it back in and all works well again. What do you think could be the problem? Thanks, Mike |
#2
Posted to rec.audio.tech
|
|||
|
|||
Amp ok until motor is started
"amdx" wrote ...
I installed a subwoofer amp, at the moment I am using the high level input on the amp. That means I'm running wires from left and right speakers to the amp input connector. So I have the rear speakers in parallel with the sub amp inputs. All works fine when the ignition is turned on, but when the motor is started one of two things happens. 1) The volume goes way down on the sub woofer. When #1 happens the rear speaker volume is also very low. 2) or the subwoofer starts a low frequency rumble. Once the car is started I can disconnect the subwoofer input then plug it back in and all works well again. What do you think could be the problem? You might want to take your question to a newsgroup where they discuss auto sound systems. Like perhaps news:rec.audio.car , etc. If you have some way of monitoring the 12V power at the sub amp (particularly while cranking), you might want to include that information in your question. PS: Please post your question only once. It won't appear instantly because of the way Usenet works (peer-to-peer, store-n-forward). Patience is a virtue. |
#3
Posted to rec.audio.tech
|
|||
|
|||
Amp ok until motor is started
"Richard Crowley" wrote in message ... "amdx" wrote ... I installed a subwoofer amp, at the moment I am using the high level input on the amp. That means I'm running wires from left and right speakers to the amp input connector. So I have the rear speakers in parallel with the sub amp inputs. All works fine when the ignition is turned on, but when the motor is started one of two things happens. 1) The volume goes way down on the sub woofer. When #1 happens the rear speaker volume is also very low. 2) or the subwoofer starts a low frequency rumble. Once the car is started I can disconnect the subwoofer input then plug it back in and all works well again. What do you think could be the problem? You might want to take your question to a newsgroup where they discuss auto sound systems. Like perhaps news:rec.audio.car , etc. If you have some way of monitoring the 12V power at the sub amp (particularly while cranking), you might want to include that information in your question. PS: Please post your question only once. It won't appear instantly because of the way Usenet works (peer-to-peer, store-n-forward). Patience is a virtue. I don't know what happened there, I hit send and then noticed the post in my Outbox. So, I hit send and got a "cannot delete message" that didn't make sense so I closed it and hit send again, I got the same "cannot delete message". At this point I copied the message and deleted it. When I looked at the newsgroup, uhhh, I had three posts of the same thing, I thought about posting an apology but that would have been four posts. I had thought about monitoring the input, but we know it drops low during cranking. I will try the other group. Thanks, Mike |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Amp ok until motor is started | Tech | |||
Getting Started | Car Audio | |||
getting started in the biz | Pro Audio |