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8. RCA Pass-Thru Jacks –
The Pass-Thru provides a convenient source for
daisy-chaining an additional amplifier without running an extra set of
RCA cables from the front of the vehicle to the rear amplifier location.
9. Punch Bass –
The Punch Bass control 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.
10. Variable Crossover –
The amplifiers have a built-in 12dB/octave
Butterworth filter with a crossover point variable from 50Hz to 210Hz.
The crossover can be set to Low-Pass (LP) or it can be bypassed by
setting it to Full Range (FULL).
11. LED Power Indicator –
The LED illuminates when the unit is turned on.