Amplifier Troubleshoot

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  • givemeaboost
    Noobie
    • Jul 2014
    • 25
    #1

    Amplifier Troubleshoot

    Today I was working on my radio which I never had working due to the fact I just bought the car(1991 318is). The radio is working as in it turns on and can search channels. Also I am getting 8 ohms to all speakers.only problem is there is no sound coming from the speakers. I found what appears to be an amp in the trunk but not in the usual position. It has one aux port, 4 electrical wires connected thats producing 12v, and a phone jack looking port on one side, and on the other a cable port. Here are some pictures of it. From what I have searched I have not seen one like this in a e30. Any ideas on what it is? Also any ideas on what that black antena thing is? Its connected to the cable port.
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    Last edited by givemeaboost; 09-10-2016, 09:37 PM.
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    • Clark
      Member
      • Aug 2016
      • 80
      #2
      where is the amp usually located in the trunk?

        Comment

        • StereoInstaller1
          GAS
          • Jul 2004
          • 22679
          #3
          Originally posted by givemeaboost
          Today I was working on my radio which I never had working due to the fact I just bought the car(1991 318is). The radio is working as in it turns on and can search channels. Also I am getting 8 ohms to all speakers.only problem is there is no sound coming from the speakers. I found what appears to be an amp in the trunk but not in the usual position. It has one aux port, 4 electrical wires connected thats producing 12v, and a phone jack looking port on one side, and on the other a cable port. Here are some pictures of it. From what I have searched I have not seen one like this in a e30. Any ideas on what it is? Also any ideas on what that black antena thing is? Its connected to the cable port.
          What you have there is an ancient cell phone brain. Yank it, every single inch of wire can come out.
          Originally posted by Clark
          where is the amp usually located in the trunk?
          First, not all E30s have amps. Second, it is located (on sedans) in front of the antenna, under the trunk liner, inside the fender, on a bracket, held in with phillips screws.

          That same bracket also holds your check panel control relay, so go find it, then we can talk about what it is.

          Closing SOON!
          "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

          Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

          Thanks for 10 years of fun!

            Comment

            • givemeaboost
              Noobie
              • Jul 2014
              • 25
              #4
              I checked everywhere in the trunk. No sign of an amp. So what can be the next problem?

                Comment

                • StereoInstaller1
                  GAS
                  • Jul 2004
                  • 22679
                  #5
                  Well,since you have the simplest wiring of any E30, Id guess either your deck or your speakers are shot.

                  Got a cheap little speaker to test the decks output?

                  Closing SOON!
                  "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

                  Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

                  Thanks for 10 years of fun!

                    Comment

                    • givemeaboost
                      Noobie
                      • Jul 2014
                      • 25
                      #6
                      Speakers work, get continuity through all wires. Im assuming it's a bad deck. I have a alpine cm5908. Any way to have it fixed by bmw ?

                        Comment

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