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Subwoofer preamp output broken?

AndySTL

AndySTL

Well-Known Member
My current basement setup has been unchanged for nearly 2 years. I have a Yamaha RX-A800 receiver that has served me well in the setup. It has been connected to my HSU sub for 2+ years down there. Everything has worked fine until a couple of weeks ago when I noticed the sub was no longer working. Here is everything I have done to troubleshoot:

1. Check speaker configuration in Yamaha manual setup menu. Sub is set to "Use." Test tone produces sound on all speakers except the subwoofer.
2. Check that HSU auto on feature is not the issue. Turned sub to always on. Test tone produces no sound for subwoofer
3. Check that HSU amplifier is not broken. I hooked up another source into the HSU input. Sound produced as expected. Sub amplifier and/or driver is not broken
4. Changed subwoofer cables. Test tone produces no sound for subwoofer
5. Check subwoofer volume knob. Volume knob set to 50%
6. Check subwoofer level trim in manual setup manual. Adjusted to + 6.0 decibels. Test tone produces no sound for subwoofer
7. Completed a master reset on the Yamaha receiver to restore default settings. Re-configured speaker settings. Test tone produces sound on all speakers except the subwoofer.

Is there anything else I should try? Does it sound like my preamp output could have suddenly gone dead?
 
I have no valuable input and it looks like you have done a pretty thorough troubleshoot.

Im definitely in for results.
 
The only thing I notice that you haven't done is disconnect the cable from the sub and connect it to something else that's known to work (another powered speaker, etc.). If this other item doesn't produce a sound, it's the preout on your Yammy.
 
Zing said:
The only thing I notice that you haven't done is disconnect the cable from the sub and connect it to something else that's known to work (another powered speaker, etc.). If this other item doesn't produce a sound, it's the preout on your Yammy.
Click to expand...

You're right, I haven't tried that. I will give it a shot a little later.

Have you ever heard of a preout breaking? Just seems so weird.
 
heeman said:
Don't be sad................

New Gear is Happy and Fun!!!

Yea Baby!!!!!!
Click to expand...

There is truth in your words...

Anyone have suggestions for a replacement? Doesn't have to be a receiver as I have 2 power amps. Anyone heard good/bad/other on the Outlaw 976?
 
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