Power Acoustik lt1920 Guia Do Utilizador

B. VARIABLE LOW-PASS FILTER (30Hz-500Hz)

For use as a dedicated subwoofer channel, set filter switch to “LPF”.  Adjust variable    
crossover frequency with control as desired. The amplifier input circuit filters out 
everything above 30Hz- 500Hz (dependent on the adjustment of the frequency control),  
so only the deepest bass notes are amplified.

C. VARIABLE HIGH-PASS FILTER (50Hz-500Hz)

For use as a dedicated mid high rangd channel, set filter switch to “HPF”. The input   
circuit filters out all frequencies below 50Hz - 500Hz.

D. BASS EQ

‘BASS EQ CONTROL’, the SUB SONIC filter frequency can can be adjusted from 60 Hz to a 

maximum of 200Hz. In this setting, there is an available boost control of 0 to +24dB.

E. CONNECTING LOW LEVEL INPUTS (RCA Jacks)

Wire routing is CRITICAL for NOISE FREE PERFORMANCE. Observe the following:

1. Always use high quality RCA type shielded cables.
2. Always use the shortest lenght possible. If the cable is too long, make an “S” type

loop (not a coiled loop) in the center of the cable to take up any excess.

3. Never cut the shielded cable and re-splice it.
4. Never route any Amplifier input cables near or parallel to speaker outputs, high

energy ignition wires, or near computer controlled ignition circuit units Computer
units may be found behind or under the dash panel in late model cars).

This METER LAMP will illuminate when the amplifier is turned “ON”. If it fails to illuminate,
check the power connections to the Amplifier and fuses.

PROTECTION CIRCUIT

Should the Amplifier be “SHORT CIRCUITED” overloaded or overheated, the protect
circuit will “SHUT-DOWN” the Amplifier.

CAUTION

THIS AMPLIFIER IS DESIGNED TO OPERATE WITH A MINIMUMLOAD IMPEDANCE OF 2 OHMS IN STEREO, 

OR 4 OHMS IN MONO )BRIDGED, MULTI-MODE) CONFIGURATION.

SUBJECTING TO IMPEDANCE’S  LOWER THAN RECOMMENDED, MAY CONSTITUTE TO POTENTIAL DAMAGE TO THE 

MOSFET POWER SUPPLY. FOLLOW INSTRUCTIONS ON SECTION. “WIRING CONNECTIONS” FOR FURTHER 

INFORMATION.

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