Question about Onkyo TX-SR703 Receiver

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No signal on subwoofer out in Onkyo TX-SR703(E) - similar to TX-SR803

I have no sound on "subwoofer out" jack.
Powered subwoofer is connected first time, and is OK - strong bass hum when touching tip of plug. But no sound. On every input and listening mode.
loudspeakers: left, center, right, surround left, surround right and powered subwoofer (Tannoy). No back surround, but Zone2 connected.
Speaker setup:
Subwoofer: yes
Front: full band
Center: 1OO Hz
Surround: 100 Hz
Surround back: No
LPF or LFE: 120 Hz
Subwoofer mode: Double bass
Subwoofer level: +8dB

May be it is dead from the beginning, but don't know, because have no used subwoofer.
May it be error in settings or failed part?


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  • 1 more comment 
  • Steve Jan 09, 2009

    The Onkyo TX-SR703 only has 1 SUB Pre-Out

  • padge23 Mar 17, 2009

    Sorry I have the same problem with the 803, sounds like this is common, could you please refer me to anything you know about that?

  • Anonymous Mar 24, 2014

    I bought this aiwa dv-av97 and my center and surround speaker outputs make a humming noise all the time when connected why does it do this and how do I fix this



1 Answer

Hey Tad, I have the same problem and perhaps a solution. I just moved to the other SW "pre-out" and it seems to be working..the green light is on . Whatever works i guess.

Posted on May 14, 2008


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