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Do receivers have internal amplifiers?

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  • Do receivers have internal amplifiers?

    I am completely new to car audio and have a simple problem for anyone with any amount of experience:
    If I remove my current stock audio reciever and I hitch my sound card output to the car audio (I am sticking with my cars stock speakers), will I need to add an amp? or do automobiles already include the amps for the speakers?

    I am assuming that the receiver handles the amplification itself but I want to make sure before I design my system.

  • #2
    of course you will need an amp, unless your car has an external amplifier, most do not.
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    • #3
      If you take out the head unit, then you need an amplifier. However there are some exception with car that come with "external amplifier". Usually those are listed as part of the preminum sound package. You need to find out if your car has one. If your car does come with an external amplifier, it is very much useless with car PC setup because those amplifier takes speaker level input when the PC soundcard can only put out line level output.
      And most or all car HU/receiver has internal amplifier build in. Aftermarket one is much better than stock (in most cars: Luxury cars come with darn good sound system like the Lexus Mark Levinson).
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      • #4
        Originally posted by MatrixPC
        there are some exception with car that come with "external amplifier". Usually those are listed as part of the preminum sound package. You need to find out if your car has one.
        Ha, the car currently has a tape deck and no CD, so I am guessing that it didn't come with the premium sound package.

        With what you said in mind, I am probably leaning towards putting in a reciever that has an auxillary input that I can use for my computer since it really does not cost much more than the amp alone, plus it means that I have an FM tuner, and I do not have to get a PCI FM Tuner.

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        • #5
          If you take out the head unit, then you need an amplifier. However there are some exception with car that come with "external amplifier". Usually those are listed as part of the preminum sound package. You need to find out if your car has one. If your car does come with an external amplifier, it is very much useless with car PC setup because those amplifier takes speaker level input when the PC soundcard can only put out line level output.
          And most or all car HU/receiver has internal amplifier build in. Aftermarket one is much better than stock (in most cars: Luxury cars come with darn good sound system like the Lexus Mark Levinson).
          Just to clarify, this is not always the case. My car has a "premium" sound option (apparently the components are made by JBL) and it has external ampifiers. I have my "line out" of my soundcard wired directly to the stock amplifier and it works fine and gets very loud when I put the PC at 100% volume. Also, when I had an aftermarket headunit installed, and running through the stock amplifier (just wired normally to the wiring harness) I couldn't turn up the volume on the headunit very much before I had major distortion. So it seems that in my car, and perhaps other Fords, the stock amplifiers accept line-level signals.

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          • #6
            A HU is cheaper than an amp... Remember, for amps you need wires too.
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