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Windows 7: Realtek with 4.1 speakers - no subwoofer output

27 Jan 2016   #1

Windows 7 64-bit
Realtek with 4.1 speakers - no subwoofer output

I have a motherboard H61M-DG3/USB3 with inbuilt Realtek (5.1 CH HD Audio (Realtek ALC662 Audio Codec) and am trying to get it to work correctly with my Cambridge SoundWorks FourPointSurround 4.1 speakers.

(I previously had a X-Fi XtremeGamer card but no using it as my old motherboard died and the new one can't support a separate audio card).

In RealTek HD Audio Manager, there's no 4.1 option. Instead there are:
  • Quadrophonic
  • 5.1 Speakers
With the first, there's no sub-woofer output at all, unsurprisingly. The front and rear speakers worked fine when tested by clicking the individual speakers in the graphic on the right hand of the control panel.

I then tried 5.1, but in the "Optional Speakers" pane, I turned "Center" off and both "Subwoofer" and "Rear Pair" on, hoping I would get output on my front and rear speakers and my subwoofer.

The front and rear speakers do work fine, but there is no subwoofer sound at all.

Is this because the Realtek card expects the subwoofer input to be on a separate cable? When I look at the "Jack Information" pane of the speaker properties, I see the following:

"C Sub (()) (pink jack socket) Rear Panel 3.5mm Jack"

Now, the Cambridge SoundWorks FourPointSurround 4.1 speakers simply have a front and rear jack. Both of these cables go into the subwoofer itself, to which are connected the four cables for the front and rear speakers. The subwoofer component itself doesn't have a dedicated cable/jack.

Any help appreciated,


My System SpecsSystem Spec
28 Jan 2016   #2

7 Pro x64, 10 Pro x64

That unit should have a crossover in its sub for your speakers it self. Set it to 5.1 then turn off the speaker and the sub so that the full signal is to the fronts, the unit will filter out the lows for you. You don't get a sub out of that cause in analog 5.1 their is an extra black wire for the center/sub channel. EDIT: scratch that use quadraphonic sorry as your unit will still filter out the lows to the sub. Test for output with this
My System SpecsSystem Spec

 Realtek with 4.1 speakers - no subwoofer output

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