Going Bald!!!!!!!
Thread Starter
Team Owner
Joined: Sep 2007
Posts: 21,915
Likes: 61
From: Miami Beach FL
Going Bald!!!!!!!
I posted this in Audio as well and thought I'd do the same in Tech:
Just had the following installed in my '98 vert:
Alpine MRP 450 4 Channel Amp
Alpine SPX-17REF 6 1/2 Componet Speaker Set (w/crossovers)
PAC Adapter (using stock head)
All is in, the amp powers up, but nothing from the front speakers but a "flicker" from the drivers side. To boot, the AC comes on when the car is started or the radio is turned on.
I'm going freakin' nuts; has anyone encountered or have a solution for this situation? Thanks
Just had the following installed in my '98 vert:
Alpine MRP 450 4 Channel Amp
Alpine SPX-17REF 6 1/2 Componet Speaker Set (w/crossovers)
PAC Adapter (using stock head)
All is in, the amp powers up, but nothing from the front speakers but a "flicker" from the drivers side. To boot, the AC comes on when the car is started or the radio is turned on.
I'm going freakin' nuts; has anyone encountered or have a solution for this situation? Thanks
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 77
From: Forney Texas
I posted this in Audio as well and thought I'd do the same in Tech:
Just had the following installed in my '98 vert:
Alpine MRP 450 4 Channel Amp
Alpine SPX-17REF 6 1/2 Componet Speaker Set (w/crossovers)
PAC Adapter (using stock head)
All is in, the amp powers up, but nothing from the front speakers but a "flicker" from the drivers side. To boot, the AC comes on when the car is started or the radio is turned on.
I'm going freakin' nuts; has anyone encountered or have a solution for this situation? Thanks
Just had the following installed in my '98 vert:
Alpine MRP 450 4 Channel Amp
Alpine SPX-17REF 6 1/2 Componet Speaker Set (w/crossovers)
PAC Adapter (using stock head)
All is in, the amp powers up, but nothing from the front speakers but a "flicker" from the drivers side. To boot, the AC comes on when the car is started or the radio is turned on.
I'm going freakin' nuts; has anyone encountered or have a solution for this situation? Thanks
Thread Starter
Team Owner
Joined: Sep 2007
Posts: 21,915
Likes: 61
From: Miami Beach FL
The PAC adapters have (or used to have) a brown wire that is a signal reference ground. You may need to ground it. It is only used when needed and that is usually determined by whether or not you have engine noise. Make sure you have 12v at the amp for power and turn-on using the amp ground as your reference ground. Is that PAC adapter specifically for the Bose interface? You do have the Bose in your car right? Bose audio signals are different than all others and need proper adapters. Where is your amp grounded? It needs to be grounded to a clean chassis ground and nothing else. It should be as short as possible. The power is going directly to the battery or battery distribution under the hood correct? What are you using for your turn-on voltage to turn on the amp?? In these newer cars, you can't simply use a test light or VOM, find voltage and consider it a good voltage source.
