Signal Leds; Input Gain; Operation Notes - Peavey GPS Series Operating Manual

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12. DDT LEDs
The DDT LEDs will illuminate when signal compression is occurring in that channel. If you have a
GPS 900 or 1500 and you have the DDT compression defeated, these LED will indicate the channel
is clipping.
13.

SIGNAL LEDs

Each channel has a Signal LED, which comes on when the amplifier channel output exceeds 1 volt.
14.

INPUT GAIN

Each channel has an Input Gain control used to adjust the gain of the input signal. Maximum power
amplifier input gain (minimum sensitivity) is achieved at the full clockwise setting (30 dB or 40x).
This setting yields maximum mixer/system headroom. A setting of less than full clockwise will yield
lower system noise at the expense of headroom.
15. FAN GRILL (located on front and rear panel)
Two continuously variable-speed DC fans supply cool air to the amplifier.
GPS 900 AND 1500
The fans operate at a quiet, low speed when the unit is turned on. The speed of the fans increase as the
amplifier heatsinks require cooling. (See Operation Notes.)
GPS 2600, 3400 AND 3500
The fans do not operate when the unit is first turned on. The operation and speed of the fans are
temperature dependent and change as the amplifier heatsinks require cooling. (See Operation Notes.)
DO NOT BLOCK THIS EXHAUST PORT! During the operation of your GPS Series amplifier, it
will require fresh air intake in order for the tunnel cooling to function properly. Blocking this air
exhaust port or the air intake ports on the rear could result in thermal shutdown of your amplifier.

OPERATION NOTES

AC MAINS CIRCUIT SIZE REQUIREMENTS.
Power requirements for the GPS Series amplifiers are rated at "typical" music conditions. The maximum
power current draw rating is limited by the amplifier's circuit breaker. Consult the specification sheet for the
current that each amplifier will demand. AC mains voltage must be the same as that indicated on the back of
the amplifier. Damage caused by connecting the amplifier to improper AC voltage is not covered by any
warranty.
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