Rockford Fosgate punch 120 Installation & Operation Manual page 10

1. Cast Aluminum Heatsink – The cast aluminum heatsink of the Punch
amplifier dissipates heat generated by the amplifier's circuitry. The
inherent advantage of casting provides a 30% improvement of cooling
over conventional extrusion heatsink designs.
2. Speaker/Power Terminals – These gold-plated connectors are used for
the connection of speaker and power wire and are immune to corrosion
that can cause signal degradation. The Punch 120 and Punch 160
utilize a barrier strip that will accept #10 spade lugs or bare speaker and
power wires sized from 10-18 AWG. The Punch 250, Punch 360,
Punch 500, and Punch 800 utilize heavy duty terminal block connec-
tors that will accept bare wires size from 8-18AWG.
3. REM Terminal – This spade terminal is used to remotely turn-on and
turn-off the amplifier when +12V DC is applied.
4. RCA Input Jacks – The industry standard RCA jack provides an easy
connection for signal level input. They are gold-plated to resist the signal
degradation caused by corrosion.
5. High Level Inputs – The high level inputs use a detachable connector
terminated with 20 AWG leads. These inputs should be used if the source
unit has only speaker line (high level) outputs and not RCA outputs.
6. Gain Control – The input gain control is preset to match the output of
most source units. They can be adjusted to match output levels from a
variety of source units.
7. Punch Bass – The Punch Bass helps correct for acoustical deficiencies
in the listening environment. The Punch Bass allows a narrow band
adjustment at 45Hz to help reproduce full range sound without excessive
boost. The Punch 120 utilizes a switch that is adjustable at 0dB/+6dB/
+12dB increments. The Punch 160, Punch 250, Punch 360, Punch
500, and Punch 800 utilize a control that is variable from 0dB to
+18dB.
8. Internal Crossover – The internal crossover is used to delegate a specific
range of frequencies to the speaker system for optimum performance.
The crossover can perform three functions: High-Pass (HP), Low-Pass
(LP), or Full Range (FULL). The Punch 120 and Punch 160 utilize a
12dB/octave Butterworth crossover fixed at 120Hz HP and 80Hz LP.
The Punch 250, Punch 360, Punch 500, and Punch 800 utilize a
12dB/octave Butterworth crossover variable from 50Hz to 210Hz.
9. LED Power Indicator – The LED illuminates when the unit is turned on.
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