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ATON AH66T INSTALLATION MANUAL
© ATON 2010 | All rights reserved. Page 50
Audio (Continued)
Symptom Possible Cause Solution
Audio “hum” or
buzz through
system speakers
1. Ground potential difference between
source components (ground loop)
1. (a) Test AC outlet using ground tester.
(b) Reverse the AC plug of components with non-
polarized ends plugged into the same outlet strip
as amp.
(c) Isolate problem by disconnecting sources one at a
time.
2. Source Input level is too high. 2. Reduce Input level settings in the ATON configuration
software.
3. Faulty / damaged cables or speaker
wiring
3. (a)Check source equipment cables for damage or
faulty connections
(b) Check for shorts in speaker wiring or improperly
wired volume controls.
Poor audio quality.
Audio is unclear,
Bass response is
low.
1. Speakers out of phase 1. Correct polarity of speaker wiring
2. Defective/incompatible speaker 2. (a)Check for physical damage to speaker.
(b) Ensure speakers have appropriate power rating for
amplifier.
(c) Ensure speakers have at least 8 Ohm impedance.
3. Incorrect Left/Right assignment of
source or zone RCA cables
3. Isolate to source or zone and correct.
4. Poor audio cable connection between
source and AH66T.
4. Verify/correct connections
Audio plays at full
volume in a variable
zone
Pre-amp output set to fixed in
programming software
Correct programming to make pre-amp output
variable
No audio to one or
more speakers
1. Loose/bad speaker wire connections
2. Break or short in speaker wiring
3. Defective speaker(s)
4. Source not sending audio
1. Check speaker wiring connections.
2. Check speaker wire continuity with a multi-meter
3. Swap with known good speaker
4. Verify source is on and playing
Audio very distorted
in areas using
volume controls or
DLA Speaker
Selector
1. Impedance Match settings incorrect
2. Volume control / Speaker Selector
miswired
1. Correct impedance match settings on volume
control(s) or DLA Speaker Selector.
2. Check for proper in/out connections at volume control
or DLA Speaker Selector