Amplifier Controls and Operation

1.CROSSOVER FREQUENCY CONFIGURATIONS - In the full-range mode (5-50,000 Hz) the amp reproduces all frequencies heard by humans. In the LP (low-pass) position, only low frequency (bass) comes out of the speakers. In the HP (high-pass) position, only information above the crossover frequency setting is sent to the speakers.

2.CROSSOVER FREQUENCY SETTINGS - The internal crossover frequency control setting of the amplifier can be continuously variable within the frequency limits shown (20-220 Hz). This control operates in both the LP (low-pass) and HP (high-pass) modes.

3.INPUT GAIN CONTROLS - This control matches the radio or preamp output voltage to the amplifier’s input voltage so that full output can be achieved. Most radios provide only 05l.OV rms output at their RCA leads. Turning the control clockwise makes the amp play louder. Technically speaking, this is the voltage needed on the input of the amplifier in order to drive it to full output.

4.412 SATELLITE CHANNEL MODE SELECT SWITCH - For 4 channel operation this switch should be in the f41 position. To bridge channels for higher power operation, this switch should be in the [21 position.

5.2/l SUBWOFER CHANNEL MODE SELECT SWITCH - For 2 channel operation this switch should be in the 121 position. To bridge channels for higher power operation, this switch should be in the ill position

6.DISTORTION LIMITING ON/OFF - When turned on, this control enables the THD, circuit. When switched ON the circuit greatly reduces all distortion products at high levels but is electrically transparent at all other listening levels. In the OFF (bypass) mode, the distortion limiting feature is disabled so typically unwanted clipping harmonics pass on to the speakers.

7.LEFT FRONT & RIGHT FRONT I MONO [Ll INPUTS - These lines connect to the RCA output jacks of a radio, or directly from the high level audio outputs from a radio. In the 4 channel satellite mode these are LF & RF. In the 2 channel mode the input marked [L] drives the 2 CH [L] output.

8.LEFT REAR & RIGHT REAR 7 MONO [R] INPUTS - These lines connect to the RCA output jacks of a radio, or directly from the high level audio outputs from a radio. In the 4 channel satellite mode these are LR & RR. In the 2 channel mode the input marked R drives the 2 CH [R] output.

9.LEFT 81 RIGHT / MONO SUBWOOFER INPUTS - These lines connect to the RCA output jacks of a radio, or directly from the high level speaker outputs from a radio. In the 2 CH mode these are L and R. In the 1 CH mode the L jack becomes the only input but drives both speaker outputs.

10.EXTERNAL CENTER CHANNEL INPUT - If a dedicated center channel signal is desired, it will be sent in over this RCA jack. The INTIEXT switch must be in the EXT position for this to work.

11.INTERNAL/EXTERNAL SUBWOOFER INPUT - The subwoofer signal will be derived from the four RCA inputs unless this switch is in the EXT position where it must have external signal inputs to operate.

12.INTERNAL/EXTERNAL CENTER CHANNEL INPUT - The center channel signal will be derived fr@ the LF and RF front RCA inputs. In the EXT position it must have external signal inputs to

operate.