Features True Line Output: The gold-plated RCA outputs on this amplifier are able
to send flat (full-range), lowpass or highpass signals to a second amplifier. The
position of the "selector" switch determines what is output through
the RCA line outputs. The selector switch may be set to "low",
"1+2" or "3+4". When set to "low", the lowpass
frequency control sets the lowpass crossover frequency for the line outputs.
Setting the switch to "1+2" allows you to set the RCA output highpass
frequency with the channel 1+2 highpass selector, and selecting "3+4"
allows you to set the RCA output highpass frequency with the channel 3+4
highpass selector. Either highpass selector may be set to "flat" for
Power Supply and Output Devices:
High current MOSFET devices are used in the power supply and output stages of
Anti-thump Circuitry: There is
a time delay turn-on with opto-coupled muting circuits for quiet, thump-free
High Speed, Audio-grade Components:
High speed, audio-grade components are used in all low level stages to help
ensure signal integrity.
Protection Circuitry: Reverse
polarity, thermal and short circuit protection circuits are used to help protect
the amplifier from damage and ensure reliable operation.
LED Condition Indicators: A
green power LED and a red protection LED are use to report the amp's operating
Blue Light Strip: There is a
blue light strip on the top of the amplifier. The light strip illuminates when
the unit is on.
Control: This controls the lowpass frequency for
all of the channels set for lowpass operation using the mode buttons. It is
variable from 40-200Hz with a 24 dB/octave slope.
There is one mode button for channels 1 + 2, and there is a separate mode button
for channels 3 + 4. Each button may be set for lowpass or flat/highpass
operation. When a full-range signal is desired for a pair of channels, the
mode button for those channels should be set to the highpass/flat position, and
the highpass frequency control should be set to "flat". When a mode
button is in the highpass/flat position and the highpass frequency control is in
the "flat" position, all frequencies above 12Hz are passed through to
the speaker outputs.
Highpass Frequency Controls:
There are two highpass frequency controls; one control is for channels 1 + 2,
and the other control is for channels 3 + 4. The highpass frequency controls are
continuously variable from flat (full-range) to 200Hz; the highpass crossovers
have a 12dB/octave slope.
Level (gain) Controls:
There are separate level controls for channels 1 + 2 and channels 3 + 4; the
control settings are continuously variable from 110mV to 8.8V. Selector Switch: The
position of this switch determines the type of signals sent through the RCA line
outputs. It may be set to "low", "1+2" or
"3+4". When set to "low", the lowpass frequency control sets
the lowpass crossover frequency for the line outputs. Setting the switch to
"1+2" allows you to set the line output highpass frequency with the
channel 1+2 highpass frequency control. Selecting "3+4" allows you to
set the line output highpass frequency with the channel 3+4 highpass frequency
control. Either highpass selector may be set to "flat" for full-range
- +12V, Remote Turn- on and Ground Connections: gold-plated screw
terminals; each terminal is 0.335" wide
- Speakers Outputs: gold-plated screw terminals (R- and L+
connections are used for bridged mode); each terminal is 0.335" wide
- Line In Connections: two stereo sets of gold-plated RCA jacks
- Line out Connections: two
gold-plated RCA jacks
Response: 10Hz to 30kHz, -0.5dB.
Fuse Rating and Type:
two 30 amp blade fuses
Separation: 81 dB
made before January 2001 carry a 1 year warranty. Units made during, and after,
January 2001 carry a 3 year parts and labor warranty. All the units currently being sold by Crutchfield were manufactured after January 2001, so they are covered by the 3 year parts and labor warranty. The production date of
each amplifier can be determined using the serial number; the first digit in the
serial number indicates the year in which the amplifier was made. If the first
digit in the serial number is "1", or higher, the amplifier carries a
3 year warranty; if the first digit in the serial number is a "0", the
amplifier carries a 1 year warranty.