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New HU. One sub RCA?

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  • New HU. One sub RCA?

    I just installed a head unit that only has one sub out RCA. My other HU had two(Left and right), so I had ran a 2 wire RCA for it. My sub amp (mono) has two RCA's in. Now, I put a Y adapter at the head unit and left the two plugged in at the amp. But, I get no sound from it.

    I took the RCA's from the amp that powers my rear speakers and the sub amp worked fine with those. I just cant get any power from the Sub output on the HU. Any ideas?

    Also, what is LO/DX?
    Mike

    My Rides:
    '03 Vibe GT!

    My AED GA!

  • #2
    Make and model of the headunit?
    HARDWARE: Fujitsu Stylistic ST5111w/WiFi and dock, internal Hitachi 500G HD, external 1TB HD, Sierra Wireless Aircard 550, DVD-RW, BoomzBox HD radio, XM Commander, Delorme GPS, Saitek X-52 Pro joystick, BluSoleil Bluetooth, TPMS, FB, Elm327

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    • #3
      Innovatek IN-471VFD. I know not the best (Had an Alpine in before, but wanted DVD playback for my newly molded in screen).
      Mike

      My Rides:
      '03 Vibe GT!

      My AED GA!

      Comment


      • #4
        Originally posted by PontiacGA View Post
        I just installed a head unit that only has one sub out RCA. My other HU had two(Left and right), so I had ran a 2 wire RCA for it. My sub amp (mono) has two RCA's in. Now, I put a Y adapter at the head unit and left the two plugged in at the amp. But, I get no sound from it.

        I took the RCA's from the amp that powers my rear speakers and the sub amp worked fine with those. I just cant get any power from the Sub output on the HU. Any ideas?

        Also, what is LO/DX?
        LO/DX is probably an FM radio thing for local/distant, it sets the sensitivity of the receiver to avoid cross talk between stations near each other in frequency.

        As to the sub, a Y adapter off the headunit and into the pair of RCAs to the amp should work fine. Check the settings, - you probably have to turn on the sub output, it might be set to OFF by default.

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        • #5
          Originally posted by lbridges View Post
          LO/DX is probably an FM radio thing for local/distant, it sets the sensitivity of the receiver to avoid cross talk between stations near each other in frequency.

          As to the sub, a Y adapter off the headunit and into the pair of RCAs to the amp should work fine. Check the settings, - you probably have to turn on the sub output, it might be set to OFF by default.
          I think you're right about the sub output setting. I have NO idea where the manual is for it, but I looked online and there is a sub menu. So, I'll try that tomorrow. Thanks.
          Mike

          My Rides:
          '03 Vibe GT!

          My AED GA!

          Comment


          • #6
            If I had to guess, I'd say look in your headunit manual for sub activation. Its probably a press and hold of the MOD button. I think on my old indash DVD it was the EQ or loudness button, but it had to be held in for 2-3 seconds and then the display would say SUBWOOFER to let me know it was on.
            HARDWARE: Fujitsu Stylistic ST5111w/WiFi and dock, internal Hitachi 500G HD, external 1TB HD, Sierra Wireless Aircard 550, DVD-RW, BoomzBox HD radio, XM Commander, Delorme GPS, Saitek X-52 Pro joystick, BluSoleil Bluetooth, TPMS, FB, Elm327

            Comment


            • #7
              Thats what it was. It thumps nice and loud now. First HU I had that you had to turn on the SW from the HU. Of course, all my others have been Kenwoods and Alpines.

              Thanks.
              Mike

              My Rides:
              '03 Vibe GT!

              My AED GA!

              Comment

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