Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.
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 full-range output.
Power Supply and
Output Devices: High current MOSFET devices are used in the power supply and
output stages of this amplifier.
There is a time delay turn-on with opto-coupled muting circuits for quiet,
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,
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.
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
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:
stereo sets of gold-plated RCA jacks
- Line out Connections: two gold-plated RCA jacks
Best Frequency Response:
10Hz to 30kHz, -0.5dB.
Fuse Rating and Type:
two 20 amp blade fuses
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.