Question about Car Audio & Video

2 Answers

I have an old sony RM X20 discjockey. It has auxiliary in fittings but I can not get my ipod to play through it with a headset to aux in extension cord.

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  • bobt361 Feb 08, 2010

    you are supposed to use the standby button to go to a "tape player" in the manual, but nothing happens when I try it with the ipod.

  • bobt361 Feb 09, 2010

    this is an old unit, I need someone who might no the system.

  • bobt361 Feb 12, 2010

    You are correct about theRMS20 being the remote controller, the disc changer itself is a CDX-A15.

  • bobt361 Feb 13, 2010

    The cd changer has what I guess you would consider a preamp unit that goes with it. It is a separate piece that connects to the changer, and also there is a separate am/fm tuner that plugs into it. This preamp has the aux in fittings, which they state could be for a separate tape player to plug into. You would think this would work for the ipod but I can not get any sound out of it when I do it. This a stand alone system so there is no other stereo that it is plugged into. I have another system in an old car that is almost identical to this system and it will not work either. (sony RM-X2001 REMOTE COMMANDER, CDX-A2001 DISK PLAYER, AND XT-30/30VF TUNER).

  • bobt361 Feb 15, 2010

    "cd changer control preamplifier" is all that it says I do not see any model number. I have a wiring diagram from the original manual I could send you, but I can not get it to attach to this message. If you would like to give me an email I can forward it to you.


  • bobt361 Feb 16, 2010

    it is for the rm x2001 cd changer commander remote and shows the inputs and outputs to everything in a typical system

  • bobt361 Feb 17, 2010

    This is what they say about the standby button on the remote; "press this button to turn the cd player and tuner off. When a cassette deck is connected to the unit, press to switch to the cassette play"

    So am I screwed on this?

  • bobt361 Feb 17, 2010

    they were not able to solve my particular problem, but I do appreciate the effort.


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I am hoping the part number is correct for the Sony car cd changer. The part number RM X20 looks more like a Sony remote controller part no.

Please confirm.

Posted on Feb 10, 2010

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  • Sam Feb 13, 2010

    I have not been able to find a manual for CDX-A15 that mentions the aux input.

    The manual which I could download from the Sony site shows this unit as a CD changer which needs to be connected to a proper car stereo. So you have only given me the model no of the CD Changer and not the car stereo. The sony manual that I have got (very poor quality) is

    If you know the model of the car stereo then I can check what connections are required to connect the iPod.

    The following website has got some interesting information which might help you.

    Hope this helps. Please post a comment to let me know if you want me to pursue this further.

  • Sam Feb 13, 2010

    Thanks for clarifying the configuration of your car audio system. The description that you provided of the other car's system was helpful. I checked the details for the RMX2001 cd changer commander and it appears the AUX IN for these models (older ones) was designed specifically for SONY car cassette players eg model XK-8D. Apart from the audio cable these units also had the compatible remote cables which would enable the commander to control the cassette.

    I cannot confirm if both your cars have the same CD changer unit or not. It would help if you can find out the pre-amp unit model no. with the Aux in connection to which you are plugging in the iPod.

    I am guessing, but as in your other car this unit must only be designed for the Sony cassette player type devices at that time.

    My suggestion would be to buy an iPOD FM transmitter and listen to it through the radio tuner on your car. The sound quality may not be great (compared to direct amplifier connection - depends on your preference.

    Something like

    Hope all this has been helpful.

  • Sam Feb 15, 2010

    When you say you have circuit diagram of the "preamplifier" from the original manual - what is the manual for? Does it have any model number on the manual and the circuit diagram?

    Difficult for me to work off circuit diagrams.

  • Sam Feb 16, 2010

    The pre-amplifier is the RM-X2001 itself. As I mentioned in one of my previous postings, the Aux -in connection also requires the corresponding remote in / out connections for the pre-amplifier to work. This connection would have been designed for a compatible Sony car audio device like a cassette player. An ipod or any other player with stereo headphone connection only will not be enough. Something has to tell the RM-X2001 that it should expect a signal coming on the Aux-in port so that it can switch in. The remote in/ out connection provides would be providing that signal.

    Hope this helps. You can try any audio player with headphone connection instead of iPOD. You will have the same problem. As mentioned the Aux-in on your pre-amplifier is designed for a compatible Sony audio device.

  • Sam Feb 17, 2010

    Sorry - I have not given you much of a good news on what you expected.

    If you want to be doubly sure why not drive into a car audio shop and be doubly sure. They may have a generic device that dubs as the cassette unit for Sony gear (old ones) to allow external players like iPod to connect. All you need is something that makes the RM-X2001 believe that it is connected to a cassette deck (to run the remote in/ out signal).

    You still have the option to use the iPod FM converter as mentioned before.

    When you have a moment please provide your acceptance of this query so that can close it.


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It should work. You do have it hooked up correctly, but you have to change a setting on the deck itself for it to go to auxilary mode.

Posted on Feb 07, 2010

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  • Nate Stansfield
    Nate Stansfield Feb 08, 2010

    I just got an fm transmitter off of ebay brand new for $1 plus $5 shipping. It works great!
    Are you able to use a cd changer button? Are you using the cd changer to ipod adapter? If so, you should be able to use the cd changer button.

  • Nate Stansfield
    Nate Stansfield Feb 17, 2010

    go ahead and send me the manual. I think you might have a bad relay inside. Or else another electronical problem

  • Nate Stansfield
    Nate Stansfield Feb 17, 2010

    If you want to know other remotes that work with this model, try

    Otherwise try and replace the switch or relay


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