[jds62f]

Hi,

Short version: RF woofer out, trying to figure out if I have an amp problem or audio control module problem. Test tips?

Longer version:

Looking for some ideas figuring out why my right front woofer is now soundless. Its been "going in and out" for months, but since now its been out for a little while, time to figure out what is going on.

1. I took the door skin off and did the test where you connect a battery. touching where at the connector, no sound. Taking the speaker out and bypassing the "stuff" between the connector and the speaker yielded results. Conclusion is that the "stuff" is a filter eliminating the sound generated by the battery.

2. So then I was off to the amplifier. I have the wiring diagram and understand that the wht/org and wht/vio wires on the amp represent a signal coming into the amp in the middle connector and leaving the amp on the lower connector. I thought i could just play some music and apply a voltage test to the corresponding wires- and yes while everything is connected I am applying a DC voltage test trying to get the probes down far enough in the backside of the amps connectors to touch the metal endpoints. Unfortunately I don't get results I feel strongly about. Sometimes zero volts, sometimes very little voltage, but if I switch to a different speaker (say left front woofer) I get the same results on a speaker I know is functioning properly.

What ways should I be testing for this? I was thinking maybe I should try again with some test tones so I could get more consistent with source input, but figured I would poll the audience.

thanks

 

[porkcereal]

Get another speaker and hook it to the channel. Front left or aftermarket. If 2 speakers exhibit the same problem, it's either wire or the amp channel.
If you're still under warranty I'd take it in because once you cut you're probably on your own

Sent from my SAMSUNG-SM-G935A using Tapatalk

 

[Cowlynz]

Is just the woofer cutting in/out? or the tweeter too?
The fronts run a single source to both the tweeters and woofer, the 'filters' you saw are the crossover.
If the tweeter doesn't cut in/out, then the issue is with the wooferspeaker.
Good luck
See the dealer .

 

[jds62f]

i absolutely hate the local Packey Webb dealer, and my general opinion of most dealers is that they are parts replacers, not troubleshooters. Problem identified- good point above about the incoming signal being the same for the right front, so the fact that the tweeter is working fine eliminates the ACM as the problem. Speaker hooked up in place of the door speaker, and in spite of my voltage tests it works, so the problem is definitely on the speaker end.

Looking closer, it appears the inductor has failed. If I bypass it, the speaker works again.