A T O NAH66T INSTALLATION MANUAL

Audio (Continued)

 

Symptom

Possible Cause

Solution

 

 

 

 

 

 

 

 

 

Audio “hum” or

1.

Ground potential difference between

1.

(a) Test AC outlet using ground tester.

 

 

buzz through

 

source components (ground loop)

 

(b) Reverse the AC plug of components with non-

 

 

system speakers

 

 

 

 

 

 

 

 

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

3.

(a)Check source equipment cables for damage or

 

 

 

 

wiring

 

faulty connections

 

 

 

 

 

 

(b) Check for shorts in speaker wiring or improperly

 

 

 

 

 

 

wired volume controls.

 

 

 

 

 

 

 

 

 

Poor audio quality.

1.

Speakers out of phase

1.

Correct polarity of speaker wiring

 

 

Audio is unclear,

 

 

 

 

 

 

Bass response is

2.

Defective/incompatible speaker

2.

(a)Check for physical damage to speaker.

 

 

low.

 

 

 

(b) Ensure speakers have appropriate power rating for

 

 

 

 

 

 

 

 

 

 

 

 

amplifier.

 

 

 

 

 

 

(c) Ensure speakers have at least 8 Ohm impedance.

 

 

 

3.

Incorrect Left/Right assignment of

3.

Isolate to source or zone and correct.

 

 

 

 

source or zone RCA cables

 

 

 

 

 

4.

Poor audio cable connection between

4.

Verify/correct connections

 

 

 

 

source and AH66T.

 

 

 

 

 

 

 

 

 

 

 

Audio plays at full

 

Pre-amp output set to fixed in

 

Correct programming to make pre-amp output

 

 

volume in a variable

 

programming software

 

variable

 

 

zone

 

 

 

 

 

 

 

 

 

 

 

 

 

No audio to one or

1.

Loose/bad speaker wire connections

1.

Check speaker wiring connections.

 

 

more speakers

2.

Break or short in speaker wiring

2.

Check speaker wire continuity with a multi-meter

 

 

 

 

 

 

3.

Defective speaker(s)

3.

Swap with known good speaker

 

 

 

4.

Source not sending audio

4.

Verify source is on and playing

 

 

 

 

 

 

 

 

Audio very distorted

1. Impedance Match settings incorrect

1.

Correct impedance match settings on volume

 

 

in areas using

 

 

 

control(s) or DLA Speaker Selector.

 

 

volume controls or

2.

Volume control / Speaker Selector

2.

Check for proper in/out connections at volume control

 

 

DLA Speaker

 

 

 

miswired

 

or DLA Speaker Selector

 

 

Selector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

© ATON 2010 All rights reserved.

 

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ATON AH66T-KT installation manual Audio hum or, As amp, Time Source Input level is too high, Software, Amplifier
Page 50 Page 52

AH66T-KT specifications

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