Your RAVE amplifier was designed to operate effectively at loads down to 2 Ohms. This means
that you can install four 8 Ohm speakers per channel when using parallel wiring. Increasing the
number of woofers per channel at low frequencies (up to 100Hz) produces an acoustic
coupling effect. This acoustic coupling increases your power output by 3 dB per speaker.
RAVE amplifiers feature built-in electronic crossovers.
The 2 Channel amplifiers feature a continuously variable low pass and high pass crossover.
The 4 Channel amplifiers feature a pair of continuously variable low pass and high pass
crossovers.
be sure to repair these conditions before attempting to power up the amplifier again.
reproduction will be distorted.
excessive audio distortion. It can also cause the protection circuit to engage.
Stereo Pre-Amp Output
RAVE amplifiers feature a pair of full range line outs providing signal to other devices or to run multiple
amplifiers in more elaborate and larger systems.
Built-in Crossover
RAVE amplifiers have been designed with 100% MOSFET power supplies, ensuring extremely quick
switching response and self-protection.
Protection Circuitry
If you observe that the protection LED is lit, please check the system carefully to determine what has
caused the protection circuit to engage. The amplifier can be reset by turning the remote power off
and then on again. If the amplifier shuts down due to a thermal overload condition, please allow it to
cool down before powering up. If the amplifier shuts down because of an input overload or short circuit,
When operating at 2 Ohms, the amplifiers will increase their output power by approximately 50%.
The current draw will also increase by about the same amount, so be sure you have enough
current to run the amplifiers into a 2 Ohm load. If you lack adequate current, your music
2 Ohm Operation
- 5 -
Two Channel Amplifiers:
R280.2, R380.2, R550.2, R800.2
Two Channel Bridgeable Amplifier
Heavy Duty Aluminum Alloy Heatsink
Class A-B Operation
Stereo Pre-Amp Output
Continuously Variable Low Pass Crossover (40 Hz to 150 Hz)
Bass Boost (0 to +18dB)
Remote Subwoofer Level Control
Continuously Variable High Pass Crossover (120 Hz to 400 Hz)
Treble Boost (0 to +12dB)
Tri-mode Operation
Continuously Variable Input Gain Control
Gold Plated RCA and Speaker Level Inputs
Remote Turn On/ Turn Off Circuit
MOSFET Pulse Width Modulated Power Supply
2 Ohm Stable Stereo Operation with Output Power Increase
Soft Turn-On Circuit
Thermal and Speaker Short Protection Circuitry
LED Protection Indicator
Four Channel Amplifiers:
R280.4, R350.4
Four Channel Bridgeable Amplifier
Using 4-CH amp in 3-CH Configuration:
R280.4: 120 Watts / channel in Four Channel mode
560 Watts / channel in Two Channel mode . or
120 Watts / channel in Two Channel mode plus 560 Watts into a third bridged channel
R350.4: 170 Watts / channel in Four Channel mode
700 Watts / channel in Two Channel mode , or
170 Watts / channel in Two Channel mode plus 700 Watts into a third bridged channel
Heavy Duty Aluminum Alloy Heatsink
Class A-B Operation
Stereo Pre-Amp Output
Continuously Variable Low Pass Crossover (40 Hz to 150 Hz)
Bass Boost (0 to +18dB)
Remote Subwoofer Level Control (CH 3/4)
Continuously Variable High Pass Crossover (120 Hz to 400 Hz)
Treble Boost (0 to +12dB)
Tri-model Operation
Continuously Variable Input Gain Control
Gold Plated RCA and Speaker Level Inputs
Remote Turn On/ Turn Off Circuit
MOSFET Pulse Width Modulated Power Supply
2 Ohm Stable Stereo Operation with Output Power Increase
Soft Turn-On Circuit
Thermal and Speaker Short Protection Circuitry
LED Protection Indicator
- 4 -
Tri-Mode Operation
Tri-Mode Operation
The amplifier protection circuitry will disable the amplifier if the inputs are overloaded, short-circuited or
extremely high temperature conditions are detected. When the protection mode is in operation, the LED
indicator on the front panel will be illuminated, indicating the amplifier has gone into a self-preservation
mode.
Please note: The gain control of any car audio amplifier should not be mistaken for a volume
control. It is a sophisticated device, designed to match the output level of your audio source
unit to the input level of the amplifier. Do not adjust this input level to maximum unless your input
level requires it. Ignoring these instructions will result in an input overload to the amplifier, and
