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.
Features
Controls
Connections
Features
Overview: The IBUS 20 amplified subwoofer features a 75-watt
RMS (150-watts max) amp and an 8" sub housed in a compact aluminum enclosure,
designed to fit in tight spaces.
Wired Remote Control: The wired remote control puts control
of your subwoofer output within easy reach. The remote can be mounted using the
included self-tapping screw. The dimensions are:
- Width: 1-3/16"
- Height: 1"
- Depth: 1-3/4" (2-3/8"
including the knob)
Mounting: The subwoofer, under 3" tall, can be mounted
flat under a seat in the passenger compartment of many vehicles.
Subsonic Filter: Frequencies that cannot be reproduced by the
subwoofer do not become sound, but unnecessary oscillations causing distortion;
these frequencies also waste amplifier power and can damage speakers. The subsonic
filter removes inaudible frequencies to improve the performance of the speakers
by eliminating this harmful distortion. The subsonic filter's crossover point is
variable from 20 to 50 Hz.
Controls
Gain: rotary dial to set the amplifier gain control; 200mV
to 5 volts
Subsonic Filter: rotary dial to control the high pass crossover
frequency; 20 to 50 Hz
Bass Boost: rotary dial to adjust the bass boost; continuously
variable from 0 to 18 dB; boost centered at 60 Hz
Crossover Frequency: rotary dial to control the low pass
crossover frequency; 50 to 150 Hz
Auto Turn-on: two position switch
- On: amp turns on when a signal is
present on the speaker-level input
- Off: amp turns on when 12 volts
is applied to the remote turn-on wire
Phase: two position switch; set the subwoofer phase to 0°
or 180°
Connections
Power: set screw terminals for power, ground, and remote
turn-on; each accepts up to 8-gauge wire
Line Input: stereo RCA inputs
Speaker Input: Molex plug for use with the included wiring
harness
Remote Bass: RJ-25 jack for use with the included wired
remote
Fuses: two 15-amp ATO fuses installed in the chassis
