15
If the noise remains, ensure the RCA cables are good
Connect a pair of speakers from a different zone
Block Connector from the suspect channels on the
noise disappears, then the suspect zone speakers
Replace the damaged speaker(s) and set the volume
controls on the back panel below the point at which
‘Protecting Speakers From Becoming Blown/
If the noise is heard only from one zone or one
channel of a zone, connect a known working,
the noise remains, connect a test speaker to the
speaker? If yes, then the problem may be in the
remains and all the previous troubleshooting steps
have been performed, then the problem lies within
Potential Reasons
•
• The speaker wires are shorted either at the Speaker
Block Connector on the rear panel, somewhere
• The speakers have been damaged such that they
•
loads and above, which is one pair of 4 ohm
speakers, one pair of 6 ohm speakers or two pairs of
Steps to Resolve
place in a rack that has good circulation of fresh air
closed cabinet or closet with little ventilation as this
can trigger its thermal protection circuit and reduce
Disconnect the Speaker Block Connector from the
If the protection LEDs remain on, then this can
be caused by DC appearing on the RCA inputs or
different source from a pair of channels that are
the substitute speakers have sound, this indicates
a problem with the source such as DC and not the
Check the speaker wire for shorts, adjacent channel
wires touching each other, construction staples
accidentally driven through the speaker wire in a
and the speakers have sound, then there is a short
with the wire and/or speakers that were originally
If two pairs of speakers are connected to a pair of
impedance, then this may be triggering the
matching device between the amp channels and
the speakers, connect the additional speakers to
Pull out the removeable AC Power Plug from the AC
Disconnect all the RCA line-level cable inputs on the
If the removal is temporary, unplug the Speaker
screwdriver to loosen the speaker wire securing
screws on the Speaker Block Connector and remove
If the relocation is permanent, then re-insert the
Speaker Block Connector into the speaker outputs
If the unit is rack mounted, remove the rack mount
properly support its weight until all the rack screws
Store the rack mount screws and other
miscellaneous hardware in a resealable plastic
it in its original factory carton to keep it safe and
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