CTA-2006 Compliant: The specifications given by Alpine for the
amplifier comply with the CTA-2006 mobile amplifier power testing and measurement
standards from the CTA (Consumer Technology Association). This voluntary standard
advocates a uniform method for measuring an amplifier's RMS power output and signal
to noise ratio, allowing consumers to compare car amplifiers and receivers under the
same conditions (apples to apples).
- Power Output:
- 2Ω: 60 watts x 1 RMS
(14.4 volts, <1% THD+N)
- 1Ω: 90 watts x 1 RMS
(14.4 volts, <1% THD+N)
- @ 1 watt: 80 dB
- @ rated power: 98 dB
- Frequency Response: 10-120 Hz (+0/-3 dB)
- Damping Factor: >200 (10 watts into
4Ω at 100 Hz)
- Input Impedance: >10 kΩ
- Input Sensitivity:
- into 1Ω: 5.9 volts (rated power
- into 4Ω: 5.0 volts (rated power
- This amplifier is intended to be used as factory OEM subwoofer
amplifier replacement with a factory OEM low impedance 1-ohm subwoofer only.
- Output connection is intended for a 1 ohm subwoofer (90W x 1), but
will work with 2 ohm (60W x 1) and 4 ohm (30W x 1). However, power level is not enough
to drive most 2 ohm or 4 ohm subwoofers.
Fixed Gain w/ Variable Crossover: The input gain on this
amplifier is fixed and not adjustable. Because the KTP-190U is a subwoofer amp, the low
pass crossover is always engaged. The crossover point is adjustable; choose 80,
100, or 120 Hz.
Wiring Harness: The amp's power/speaker harness has a 10-pin
proprietary connector on one end that plugs into the KTP-190U, and bare wires on
the other end to connect to constant power (with 10-amp fuse installed), ground,
the radio's speaker level outputs (left and right channels), and the subwoofer
input. The power wire can often be spliced into the radio's power source.
Note: The factory radio circuit needs to
be a minimum of 15-amps. If it is not, a separate power and
ground will need to be installed for the KTP-190U.
Auto Turn-on: A circuit automatically turns the amplifier on
when it senses a speaker-level input signal.
Wired Remote: An RJ-14 jack is provided
for connecting an optional RUX-KNOB.2 wired remote (500RUXKNOB.2, sold separately), allowing remote control of
the output level of the amplifier.
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