Adding an amp kills the audio?

[wired505]

I was all ready to have my aftermarket amp & subs installed tomorrow, but now the shop is unsure of the safety of doing such a thing. They just heard of a case where adding an amp (via line-out converter) resulted in the system producing no audio. Everything worked, except there was no sound.

 

Now they are having me hold off until they learn more. Has anyone had experience adding an amp to a Sync audio system via line-out converter (or otherwise)? Shouldn't this be an easy install?

 

I have a 2010 Ford Fusion Sport with the 12-speaker Sony (Moon & Tune) package.

 

Thanks for your help,

Steve

[brunor]

One thing that could cause this is if the impedance input of your amp and the impedance output of the radio differ, causing a current overdraw at the o/p which would in turn cause the output converter to shutdown to protect it from frying. Or if the amp requires more power than the output converter is able to provide which again would cause your output to shutdown to prevent damage. I don't have the schematics or specs of the radio, but they usually have some sort of overcurrent protection built in. I know from some posts that pple have added after market amp and subs so browse on the forums and check what they have. If the shop has some electronic knowledgeable pple they should also be able to verify that, as long as they have the o/p specs (i.e x mW/x ohms, etc...)

[hoopdaddy6]

One thing that could cause this is if the impedance input of your amp and the impedance output of the radio differ, causing a current overdraw at the o/p which would in turn cause the output converter to shutdown to protect it from frying. Or if the amp requires more power than the output converter is able to provide which again would cause your output to shutdown to prevent damage. I don't have the schematics or specs of the radio, but they usually have some sort of overcurrent protection built in. I know from some posts that pple have added after market amp and subs so browse on the forums and check what they have. If the shop has some electronic knowledgeable pple they should also be able to verify that, as long as they have the o/p specs (i.e x mW/x ohms, etc...)

 

Not True. An actual Line Out Converter Box will keep the impedance at factory specs. I'm running a line out converter on mine with no problems.

[Oldguy16]

A line out converter that works should do as such the name. Granted, we don't know exactly what amp you're using, or what sub, but technically it shouldn't matter. a proper line-out converter should make the right signal at any volume for the amp to go on. I don't believe you should have a problem.