Controls and Indicators
Inputs and Outputs
Class T Amplifier Design: Class
"T" digital amplifier design combines the high fidelity sound
reproduction of class "AB" amplifiers with the low heat dissipation
benefits typically found in class "D" amplifiers. Although class
"D" amplifiers generate little heat, they are almost exclusively used
as subwoofer amps, because they are not known for high fidelity, full range
sound reproduction. Class "AB" amplifiers generate much more heat than
class "T" and class "D" amplifiers, so large heat sinks are
needed for cooling. The class "T" design allows this amplifier to be
made smaller than class "AB" amplifiers of a similar power rating,
without the sound quality sacrifice that comes with a class "D"
Input Select Switch:
This switch allows you to select between stereo, single-input bridged, or L+R
(left plus right) bridged. The benefit of the single-input bridged mode is
that it allows single-channel RCA input to be used for bridged applications.
This is useful in high-powered systems when using one amplifier for each
subwoofer where your receiver has limited RCA outputs.
Crossover Slope Switch:
This switch allows you to select between a 12dB and 24dB crossover slope.
Selecting the 24dB slope when driving subwoofers will better keep out midrange
tones, which will make the amplifier more efficient.
Subsonic Filter: This
switch activates the subsonic filter circuit, which eliminates unwanted
frequencies from 24Hz and below.
amplifier includes a continuously variable 55-550 Hz low-pass crossover.
You can opt to engage the low-pass crossover, or it may be turned off for
Remote Sub Level Control: There
is a port on this amplifier for the supplied remote sub level control.
This control allows you to adjust the output level of the amplifier from a
remote location, like your driver's seat.
- Over current: shuts
off the amp when the input signal is too high
- Offset: shuts
off the amp when the output voltage is too high
shuts off the amp when the operating temperature is too high
- Crossover frequency
control: a rotary control that
sets the crossover cut off frequency from 55 to 550Hz
- Crossover slope: a
push-button switch that allows you to select between a 12dB and 24dB
- Bass boost control:
a rotary control used to set the bass boost from 0 to +15dB at 45 Hz
- Gain control: a
rotary control used to set the amplifier's input sensitivity to match the
level of the incoming signal
- Subsonic Filter: a
push-button switch used to engage the subsonic filter circuit
- Output Select Switch:
let's you select between full-range and low-pass operation
- Input Select Switch:
let's you select between stereo, mono, or right input only bridged modes
- Power LED: illuminates
green when the unit is on
- One Ohm Mode LED: illuminates
light green when operating at 1-ohm
- +12V (power):
screw terminal (0.50" wide)
- GND (ground): screw
terminal (0.50" wide)
- REM (remote turn-on):
screw terminal (0.375" wide)
- Speaker-level inputs: These
provide a high-level connection option from your receiver. Note: When
using the included harness for the speaker level inputs, the black wire must
be grounded at the radio.
- Line-In: set
of stereo RCA jacks
- Remote Level Control Port: phone-style
jack for use with supplied remote Sub Level Control (BC2).
- Speaker outputs:
screw terminals (0.375" wide)
Amplifier Fuse Replacement:
Note that the three 30-amp fuses in this amplifier are internal, so the bottom
cover of the amplifier will need to be removed in order to access them.
- RMS power at 4 ohms: 250
watts x 2 (at <1% THD)
- RMS power at 2 ohms: 450
watts x 2 (at <1% THD)
- RMS power at 1 ohm:
500 watts x 2
- RMS power when
bridged (2 ohms): 1000 watts x
1 (at <1% THD)
- Preamp input voltage:
250mV - 2.5V
- Maximum current
consumption (at 1000 watts): 86
This amplifier uses three 30-amp fuses, so its fuse rating (90-amps total)
exceeds that of typical 4 gauge wiring kits, which tend to include a 60-amp
fuse. For 90-amp fuse protection, an ANL wafer style fuse is required, but none
of the 4-gauge wiring kits include a ANL-style fuse holder. Since pre-packaged
amplifier wiring kits cannot be used alone, you may purchase all the necessary
items separately, or you may use a pre-packaged 4 gauge wiring kit along with a
ANL-style fuse holder and a 100-amp ANL wafer fuse (a 90-amp fuse is not
available). If you do not use a wiring kit with the necessary additional items,
the separate parts and wiring needed to install this amplifier are as follows:
- 1 ANL wafer-style fuse holder
capable of accepting 4 gauge wire
- One 100-amp ANL wafer fuse
- 2 power rings for 4 gauge cable
- 4 gauge power cable (to connect the
battery to a fuse holder and the fuse holder to the amplifier)
- 4 gauge ground cable
- Remote turn-on cable (speaker wire
can be used as remote turn-on cable)
- 1 stereo RCA patch cables
- Speaker wire
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