CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard
advocates a uniform method for determining an amplifier's RMS power output and
signal-to-noise ratio. The criteria for measuring power uses a DC input voltage
of 14.4 volts and the RMS power output is measured over the full frequency range
of the amp with 1% or less Total Harmonic Distortion plus noise (THD+N).
Signal-to-Noise ratio is measured in weighted absolute decibels at a reference
of 1 watt. CEA-2006 allows consumers to compare car amplifiers and receivers on
equal footing. Measured under CEA-2006 conditions the Kicker DXA250.1 is rated at
125 watts RMS x 1 channel into a 4-ohm load and the signal to noise ratio is >95
dB. Additional specs listed in the manual (but not listed as CEA-2006 compliant)
include 250 watts RMS x 1 channel into a 2-ohm load (measured using a 14.4 volt
power supply with no more than 1% THD+N) and 95 dB signal-to-noise ratio (measured
at the rated power output).
Auto Turn-On: There are two ways to automatically turn on
the amplifier. Most aftermarket car stereo head units will have a remote turn-on
lead, which can be extended to the amplifier location and connected to the amp's
Remote terminal. If connecting the amplifier to a factory stereo, or a head unit
without a remote turn-on lead, the amp can automatically turn on using the DC
Offset mode. The amp detects a 6-volt DC surge on the signal inputs and turns
the amplifier on. There is no switch on the amp to select the Turn-On method.
Protection Circuitry: The DXA250.1 has protection circuitry
that will turn the amp off in the event of overheating, over voltage (over 16 volt
input), under voltage (under 10 volt input), and short circuit (speaker output).
If the Protection LED on the right side of the amp illuminates red, the protection
circuit has engaged and the amp will not play until the problem is resolved.
Dual Input Sensitivity: The DXA250.1 can receive low- or
high-level signals from your car stereo source unit at the amplifier's left and
right RCA inputs. The low-level signal can be sent from the source unit's RCA
line-level outputs. In this case, the Input Sensitivity switch on the amp should
be set to "LO". A high-level signal can come from the source unit's speaker
outputs, and connected to the amplifier using the
Kicker KISL adapters. The Input Level switch should be set to "HI".
Fail-Safe Integration Technology (FIT): FIT utilizes isolated
differential inputs, rejecting noise and electrical interference for the quietest
operation possible. FIT also allows Kicker amps to accept output from nearly any
factory or aftermarket head unit.
Input Level: The DXA250.1 has a two position (in/out) switch to
set the input level type. It can be pressed in for High (for speaker
level) or set to out for Low (for line level).
Gain: The input gain is continuously variable, labeled 0 to
11. The gain range is governed by the input level switch: 250mV to 10V for speaker
level (HI) and 125mV to 5V for line level (LO). A small screwdriver is needed to
adjust the gain.
Crossover Frequency: The internal low pass crossover is always active
(it cannot be bypassed). The crossover point is continuously variable between 50
and 200 Hz. The slope is 12 dB/octave. A small screwdriver is needed to adjust
the crossover frequency.
KickEQ Bass Boost: The KickEQ bass boost circuit provides a
signal boost centered at 40 Hz. The bass boost is continuously variable between
0 and 12dB. A small screwdriver is needed to adjust the amount of bass boost.
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 24 dB/octave subsonic
filter's crossover point is 25 Hz.
Optional CXRC Remote Bass Level Control: The DXA250.1 is
compatible with the optional
CXRC remote bass level control which allows you to remotely control the
output level of the amplifier. The CXRC's control knob can be mounted near the
driver's seat of your vehicle, while the control's 16' cable is extended to the
Wiring Recommendations: Kicker recommends that the amplifier
be connected to the vehicle's battery using 8 Gauge power and ground wiring. An
external 40 amp fuse should be installed on the power wire within 18" of the
battery. There are no fuses included or built into the amplifier.
Kicker Extended Warranty Offer: Kicker will extend the amp's
warranty by an additional year (for a total warranty of three years) when it
is installed with a qualifying Kicker amplifier installation kit. Kicker
CK8, and ZCK84 amp wiring kits for this amp. The amplifier and installation
kit must be purchased from an authorized Kicker dealer.
Left Side of Amplifier:
- GND (ground): screw terminal;
accepts spade connector up to 0.5" wide
- REM (remote turn-on): screw
terminal; accepts spade connector up to 0.33" wide
- +12V (power): screw terminal;
accepts spade connector up to 0.5" wide
- Speaker Outputs: screw terminals;
accepts spade connectors up to 0.32" wide; there are
terminals for two subwoofers, internally shorted together
Right Side of Amplifier:
- RCA Inputs: one pair of
RCA jacks, used for line level or speaker level inputs with
- RCA Outputs: one pair of
RCA outputs; useful for adding another amp
- Remote Bass: 3.5mm jack (mini-jack) for use with the optional
CXRC remote bass level