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Ryval ®Amplifi ers
4 CHANNEL POWER AMP OWNERS MANUAL
1.
STATUS LED
Green- Amplifi er is powered “ON”
2.
PROTECT LED
Red- If the internal heatsink reaches 80 degrees Celsius the amplifi er shuts down until the internal
temperature falls below 75 degrees. It also lights if a direct short is present on the speaker outputs.
If this occurs, check for shorted speakers and cycle power to resume operation.
3.
REMOTE TURN-ON TERMINAL
Connect to a switched 12 Vdc source such as the headunit’s “remote” or power antenna wire.
4.
B- TERMINAL (CHASSIS GROUND)
Connect to a clean, solid chassis ground. Remove all paint and dirt from the chassis connection point.
Minimum cable size is 8 gauge. Keep the cable as short as possible.
5.
B+ TERMINAL (BATTERY POSITIVE)
Connect directly to the positive battery terminal. Minimum cable size is 8 gauge. Remember to properly
fuse this cable within 18 inches of the positive battery terminal.
6.
SPEAKER OUTPUTS
Used to connect the amplifi er to speakers. Use the left (+) and right (–) terminals for bridged mode.
Minimum stereo speaker cable size is 16 gauge (PG # SS162 or QS162). Use 12 gauge for bridged
operation (PG # SS122 or QS122). Minimum impedance is 4 ohm bridged or 2 ohm stereo.
7.
FUSES
Used to protect the amplifi er. If replacement is necessary, use the same size and type indicated on the
endpannel.
Never use a fuse with a higher amp rating.
8.
REMOTE VOLTAGE DISPLAY INPUT (RMD)
Connect the optional RMD Voltage Display to this jack.
9.
CROSSOVER CONFIG SWITCH
This switch controls the type of signal that reaches the speaker outputs. For a 100Hz highpass signal, set
the switch to “100Hz HP”. For continuously variable lowpass signal set the switch to “VAR LP”. For a full
range signal set the switch to “BY”.
10.
LP FREQ CONTROL
Adjusts the lowpass crossover point for the speaker outputs. The crossover frequency is adjustable from
40 to 400Hz with a 12dB per octave lowpass slope.
11.
RCA INPUT
Connect preamp signal cables from the head unit to these terminals. To maximize noise rejection, we
recommend using Genuine Phoenix Gold RCA interconnects.
12.
INPUT SELECT
When set to “
FRONT
” the front inputs will provide signal for the entire amplifi er. When set to
“
FRONT+REAR
” both the front and rear inputs will accept signal separately allowing the use of a
headunit fader.
13.
AUX OUT
Provides a full range signal for an additional amplifi er.
14.
SENS CONTROL
This control is used to reach maximum amplifi er power with a wide variety of headunits. The amplifi er is
more sensitive to input signal when set to 0.1 and less sensitive when set to 8; turning the control
clockwise will increase signal speaker output volume.
Operational Details
1.
STATUS LED
1.
STATUS LED
