AudioControl D4400 Spezifikationen PDF herunterladen (Seite 38)

Warning - Always connect

the safety earth ground.

If you have an AC hum

problem, use the

ground lift switch

you are using an in-wall volume control, please see

Advanced Topics for more information.

4. Speaker channels are cutting in and out:

a. If using in-wall volume controls, check that they can

handle the power output. See Advanced Topics page

28.

b. If bridging, the ampliﬁer “sees” one-half the stated

speaker impedance rating. Make sure the impedance

is high enough. (See page 28.)

c. There maybe a short in the wires. Suspect a short if

the problem happens only at the highest volumes.

5. Protection LED is Red:

a. Unplug the unit from AC power, wait two minutes,

then plug back in. This should reset the unit.

b. Something rather serious has happened inside The

Director. Call the AudioControl factory.

6. Speaker Buzzing or Cracking at high volume:

a. Reduce the equalizer boost in the 40-80 Hz

range.

b. Raise the subsonic ﬁlter frequency.

7. There is no audio input signal, but the Zone Status

LED is still Blue:

a. Check the Signal-Sense defeat switch on the rear

panel as well as in the Ethernet controls.

b. The Zone Status LEDs stay on for 1 to 2 minutes

after the audio signal has stopped to prevent prema-

turely turning off the zone during quiet passages or

disk changes.

8. The unit is on but you cannot trigger it off

• With the ethernet control, the unit will stay on if

either a 12v trigger is on (or jumpered) or the

ethernet control is set to on.

Troubleshooting

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AudioControl D4400 Spezifikationen Seite 38