CEA 2006 Compliant: The Pioneer GM-D9500F 4-Channel Power
Amplifier power ratings are measured according to the strict standards dictated
by the Consumer Electronics Association (CEA). These standards allow you to
accurately compare the rated power output of all CEA 2006-compliant amplifiers,
even if they come from different brands. Manufacturers who adhere to the
standards can display the CEA 2006 logo on their products and packaging. CEA2006
- Four-Channel: 75 watts x 4 at 4-ohms with 1% THD+N (100
watts x 4 at 2-ohms with 1% THD+N)
- Bridged: 200 Watts x 2 at 4-ohms with 1% THD+N
Class-D Amp: The superior efficiency of a Class-D amplifier
means higher power output and greater compactness than an analog amplifier
offers. Class-D amplifiers overcome the inefficiencies of traditional Class-A or
AB amplifiers. Pioneer's Class-D amps transform very little power into heat so a
higher percentage of the power supply (67%) is transformed into the load. This
results in a very compact amp which needs less input power to produce very high
Pulse Width Modulator (PWM): The Class-D amplifier's PWM
(Pulse Width Modulator) modulates the original audio input signal with a
triangulated signal wave which has a much higher fixed frequency. The result is
a digital signal which contains both the input signal and a band of frequency
components around the modulation frequency. LPFs (Low Pass Filters) or HPFs
(High Pass Filters) then filter out designated high and low frequency pulses,
and the resulting amplified output signal is then sent to the connected
subwoofers and/or speakers.
Input Select Switch: The amplifier's input select switch allows you to
choose between a 4-channel or 2-channel mode. The 4-channel mode requires run
two pair of RCA cords to the amplifier's front and rear RCA inputs, while the
2-channel mode only requires you to run on pair of RCA cords to the amplifiers
front RCA inputs.
Gain Control: To accommodate the varying range of signal
levels coming from today's factory and aftermarket radios, the Pioneer GM-D9500F
features adjustable gain controls (0.2-6.5V) for the front and rear channels of
the amplifier. This means that no matter what kind of radio is connected to this
amplifier, the appropriate gain control adjustment can be made to ensure loud,
clear, distortion-free music. And even if the gain control level is set
improperly, Pioneer's Gain Control Caution feature will automatically reduce the
amplifier's output until the headunit volume is decreased to acceptable levels.
This added layer of protection helps to prevent damage from occurring to the
amplifier and the speakers connected to it due to improper gain control
High-Pass and Low-Pass Crossovers: Built into the GM-D9500F
is an independent high-pass and low-pass crossover network for the front and
rear channels of the amplifier. The variable low-pass crossover routes the big bass
signals (40-500Hz and lower, at -12dB/octave) to the speaker that handles them best,
and filters out higher-frequency signals to that speaker. The fixed high-pass
crossover routes the midrange and high frequencies (40-500Hz and above, at
-12dB/octave) to the speakers that cannot handle the lower frequencies. This
optimizes your system's efficiency and delivers the best possible sound quality.
Power Connections: The power and ground connections will accommodate up
to 4-gauge wire. The remote turn-on terminal will accept up
to 8-gauge wire. A phillips-head or straight-head screwdriver can be used to tighten
Speaker Level Input: Two
speaker level to RCA adapters are included; splice your radio's speaker output to
these adapters, then plug it into the RCA inputs on the amp. The input switch on
the amp should be set to SP (speaker level) or RCA (line level) to match the
radio output level.
Speaker Connections: The speaker output terminals will
accommodate up to 8-gauge wire. A phillips-head or straight-head screwdriver
can be used to tighten and loosen the terminals.
RCA Input: The amplifier features two pair of gold-plated
stereo RCA outputs (Front/Rear).
RCA Output: The one pair of preamp output jacks provide a convenient
source for daisy-chaining an additional amplifier without running an extra set
of RCA cables from the front of the vehicle to the amplifier location. These
outputs provide a full-range signal.
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