Muteki woofers protect subwoofer

distorting speakers comes from over driving them( too much power from amp)
turn the volume down or get bigger speakers

Check your owner's manual for a Factory Reset, or Return to Default. Try that first. If it still doesn't work, try disconnecting the sub completely, and see it that resolves the issue.

it could be that the sub amp is using up too much power, causing it to trip out on you.

If a fuse blows it won't self-heal when you cycle power.

Swap the subwoofers between the two subwoofer speaker feeds. Maybe it will stay with the channel or maybe it will follow the speaker and make next steps easier.

H?,
You have a very good system...one of the best of SONY..SUB does not get activated automatically especially on STEREO mode.DIRECT STEREO Notes • No sound will be output from the subwoofer.
.your system has Dedicated Power Amplifier for 2 Externally Driven Sub-Woofers (200W RMS x 2)..in order to activate the sub woofer amplifier you need to make a selection on the surround modes while you are switching the modes of the surround you will see the speaker position on the display of receiver as well..if you do not see the sub woofer it wont be activated..Sound Field Program (A.F.D) is a good example to test it..
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Hope this helps!
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Additionally please follow the instruction on your user manual to activate the SUB ,as is follows..
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BASS-OUT
Low-frequency (bass) signals can be directed to the
subwoofer and/or the front left and right speakers
according to the characteristics of your system. This
setting also determines the routing of the LFE (low-
frequency effect) signals found in Dolby Digital or DTS
sources.
Choices: SWFR (subwoofer), FRONT, BOTH
• Select SWFR if you connect a subwoofer. LFE and
low-frequency signals from other channels are directed
to the subwoofer according to the speaker settings.
• Select FRONT if you do not use a subwoofer. LFE and
low-frequency signals from other channels are directed
to the front speakers according to the speaker settings
(even if you have previously set the front speakers to
SML).
• Select BOTH if you connect a subwoofer and you want
to output low-frequency signals from front channels to
both the front speakers and subwoofer. LFE and low-
frequency signals from other channels are also directed
to the subwoofer according to the speaker settings. Use
this function to reinforce low-frequency signals using
the subwoofer when playing back sources such as CDs.

This is usually due to wiring the subwoofers to the wrong Ohm load. Normally those amps are rated at a 4 Ohm load. It sounds to me like they are wired down to a 2 Ohm load and bridged. It's a protection situation for the amp. If you have a multimeter, disconnect the woofers from the amp. Next, hook the meter up to the subwoofers where the wire or wires are coming out of the box. If you can give more information on the woofers, I can give you a better idea on what the numbers that you should see. It depends on if they are dual 2 or 4 Ohm woofers.

ok, your amp is in protect mode. either the speaker wires are crossed and shorting out, your woofer's vioce coils are melted and the speaker is blown or the amp is dead.

to determine if the speakers voice coils are melted, and thus the speaker being blown is the reason for the "protect" light, simply push in the cone of the woofer in gently with your hand. the woofer should move a little more than an inch, without any resistance, before bottoming out. if there feels to be any resistance, like a rubbing or scratching, before the woofer bottoms out, then your voice coils are fried, and you need a new woofer.

Unplug your subwoofer speaker cables and then turn the vehicle back on, and if the protector light turns off it is your woofers.

If it is still on, it could be a bad fuse going to your battery, a bad fuse on the amp, or a bad amp. :)

your speakers are hooked up wrong. hook both positives together and both negatives together and bridge it to the amp. if it is one channel hook it up as one together. if it is 2 channel hook positive to one side and negative to the other side.

kicker aint kickin? warranty,warranty,warranty!!!