Atlas Sound PA1001G - Manual (Page 9)

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Specifications are subject to change without notice.
Owner’s Manual PA1001G Power Amplifier
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
instAllAtion And considerAtions
cabling:
The PA1001G can be used with either balanced or unbalanced sources, and the outputs can be used with either balanced
or unbalanced loads, provided the proper cabling is used. A balanced line is defined as two-conductor shielded cable with
the two center conductors carrying the same signal but of opposite polarity when referenced to ground. An unbalanced
line is generally a single-conductor shielded cable with the center conductor carrying the signal and the shield at
ground potential.
Balanced Input - Use 2 conductor w/shield for low level signals of 20-22 gauge is best. Maintain the proper polarity,
+ to +, – to – and shield to ground. Note: The ground center pin of the Phoenix connector is common for both channels.
Unbalanced input - For the RCA inputs pre-made RCA cables can be purchased from vendors to simplify interconnection
to external devices. For unbalanced signals using the Phoenix connector connect the (–) pin of the amplifier input to the
GND center pin and the (+) pin to the positive of the source.
Speaker outputs - Use 2 conductor unshielded wire of the appropriate gage. If you are unsure about this, contact Atlas
Sound Tech Support at 1-800-876-3333. Make sure you know how many speakers you need and what load value you
intend to use.
Audio sense control Adjustment (rear Panel)
The PA1001G can be remotely turned on via the two stereo audio inputs. The PA1001G mains power switch must be on
to activate or adjust Audio Sense trigger control. Prior to power on the AC Mains Power Switch of the PA1001G follow the
instructions below.
note: once the PA1001G has sensed audio signal and has triggered on, it will take 15 -20 min
for it revert back into sleep mode even when there is no audio present. Also, the PA1001G level controls have no
affect on this feature.
1. First select the proper Dip Switch setting to “ sense on” and “Audio on”.
2. Set the PA1001G front panel level controls to 12 o’clock position.
3. Then plug a audio component such as a computer, DVD player or CD player into the balanced or RCA unbalanced
inputs of the PA1001G. Note: Prior to turning on the AC mains of the PA1001G make sure the source level is turned
fully down or off (Mute).
4. By using the potentiometer adjustment labeled “ Audio sense”, rotate fully clockwise. The AC mains Power LED
should be Red still.
5. Slowly apply audio signal from audio source until the AC Mains Power LED turns from Red to Blue. Whenever there
is an audio signal present at the inputs, the PA1001G automatically switches itself into from standby or sleep mode to
amplifying the audio the signal into the room loudspeakers If the PA1001G power LED does not turn from Red to Blue
the amp is still in sleep mode. Slowly rotate the potentiometer counter clockwise with audio present until the LED
changes from Red to Blue. If the adjustment is fully counter clockwise and the amp is still in sleep mode it may be
necessary to increase the audio source output signal. Note: By rotating the potentiometer clockwise (right) the trigger
point becomes less sensitive to turn on, meaning it will take more audio signal at the input to turn on the amp.
6. For proper audio triggering some experimentation may be necessary, but once it is set properly the PA1001G will
not need readjusting. Check the operation by turning audio source on and off. Note: If the sensitivity is set too high,
random switching may occur as the unit senses the residual noise level and may falsely trigger. If this happens
slightly rotate the potentiometer clockwise.
7. Adjust the amplifier level controls and audio source to the desired listening level.