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Radio replacement - do these cars have separate amps?

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    #1

    Radio replacement - do these cars have separate amps?

    I'm looking at the wiring diagram for our cars in the service manual, and it looks like my car MIGHT have an amp, back behind the rear seatback. The manual talks about two different types of radio options available. If the factory (OEM) unit needs an external amp to power it, that must mean its speaker outputs are low level outputs. But the new head unit I bought, a JVC KDR320, has amp built in (so has high level outputs). It does have RCA pre-outs. So will it still work with my car's wiring, or do i need to run separate wiring from my new unit directly to each speaker?

    Thanks
    95 DGM Impala SS, 383, LT4 cnc heads, LT4 matched intake, Holley 58 mm t/body, GM 846 cam, GMPP 1.5 rr's, F-body MAF, BH OBD I PCM, LT4 knock module, K&N cold air, Edelbrock headers, Flowmaster exhaust, BBHP #73 6-speed, 4:10 gear, sloted and drilled rotors, Z28 cluster
    96 Buick Roadmaster Limited Wagon, mostly stock
    77 Ford F150, 400M auto, longbed
    98 Suburban LS 5.7L Vortec, stock
    90 Grand Marquis, stock
    Tags: None
    #2
    if it has premium sound, it has an amp
    does the aftermarket head unit have front and rear rca's? you will prob have to make an adaptor if you want to use the factory amp

    they do make amp bypass plugs, but the factory amps in the later boxes were actually decent.

    1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
    2006 Lincoln Town Car Signature. Stock for now
    1989 Ford F-250 4x4 much much more to come, sefi converted so far.
    1986 Toyota pickup with LSC wheels and 225/60/16 tires.
    2008 Hyundai Elantra future Revcon toad
    1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

    please be patient, rebuilding an empire!

    Comment

      #3
      Originally posted by Lincolnmania View Post
      if it has premium sound, it has an amp
      does the aftermarket head unit have front and rear rca's? you will prob have to make an adaptor if you want to use the factory amp

      they do make amp bypass plugs, but the factory amps in the later boxes were actually decent.
      Actually, I'd prefer to just eliminate the factory amp altogether, but will that work, since all the wires from the OEM head unit go back to the amp (if i have one). I don't know whether I have the 'EPR' or the 'ESC' unit. One has an amp, the other does not. My new unit has enough power to push the front/rear factory speakers and doesn't need the factory amp.
      95 DGM Impala SS, 383, LT4 cnc heads, LT4 matched intake, Holley 58 mm t/body, GM 846 cam, GMPP 1.5 rr's, F-body MAF, BH OBD I PCM, LT4 knock module, K&N cold air, Edelbrock headers, Flowmaster exhaust, BBHP #73 6-speed, 4:10 gear, sloted and drilled rotors, Z28 cluster
      96 Buick Roadmaster Limited Wagon, mostly stock
      77 Ford F150, 400M auto, longbed
      98 Suburban LS 5.7L Vortec, stock
      90 Grand Marquis, stock

      Comment

        #4
        oops thought u wanted to keep it......in that case, you can get an amp bypass plug from a stereo shop

        1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
        2006 Lincoln Town Car Signature. Stock for now
        1989 Ford F-250 4x4 much much more to come, sefi converted so far.
        1986 Toyota pickup with LSC wheels and 225/60/16 tires.
        2008 Hyundai Elantra future Revcon toad
        1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

        please be patient, rebuilding an empire!

        Comment

          #5
          do you know if you need a radio installation kit for a standard DIN unit? I bought the Metra ibr-509fd and now looking at the JVC unit, it may just work without the kit.
          Last edited by alchemist; 09-27-2011, 10:06 AM.
          95 DGM Impala SS, 383, LT4 cnc heads, LT4 matched intake, Holley 58 mm t/body, GM 846 cam, GMPP 1.5 rr's, F-body MAF, BH OBD I PCM, LT4 knock module, K&N cold air, Edelbrock headers, Flowmaster exhaust, BBHP #73 6-speed, 4:10 gear, sloted and drilled rotors, Z28 cluster
          96 Buick Roadmaster Limited Wagon, mostly stock
          77 Ford F150, 400M auto, longbed
          98 Suburban LS 5.7L Vortec, stock
          90 Grand Marquis, stock

          Comment

            #6
            for the standard din, just use the included sleeve that the aftermarket radio comes with and fit it in the hole before installing the radio.

            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

            Originally posted by gadget73
            ... and it should all work like magic and unicorns and stuff.

            Originally posted by dmccaig
            Overhead, some poor bastards are flying in airplanes.

            Comment

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