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Pioneer GM-D9500F

4-channel car amplifier — 75 watts RMS x 4

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Item #: 130GMD950F
 

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Original price $189.99
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Our take on the Pioneer GM-D9500F

by Buck Pomerantz
Pioneer

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Upgrade your in-car listening experience with a Pioneer GM Series amp — it'll provide the power and sound quality you're looking for, all in a reliable package you can count on. Under the hood, solid construction eliminates resonant vibrations that can cause distortion, while an efficient cooling system keeps the amp running clean when it's working hard. Pioneer uses Class D technology in this GM Series amp to deliver maximum power from a chassis that's half the size of their conventional models.

Read more

The GM-9500F 4-channel amplifier produces plenty of juice, with 75 watts RMS per channel to drive your front and rear speakers. Or you can switch this versatile amp over to 2-channel mode and drive two subs with 200 watts each. You'll find variable frequency filters on the front and rear channels that adapt the amp to the job at hand. High- and low-level inputs allow you to add the GM-9500F to almost any system, while its preamp outputs simplify adding an additional amp.

Highlights:

  • 4-channel car amplifier
  • 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • 4-channel variable high- and low-pass filters (40-500 Hz, 12 dB per octave)
  • Class D amp technology
  • MOSFET power supply
  • speaker-level inputs
  • preamp inputs and outputs
  • fuse rating: 40A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 10-11/16"W x 2-3/16"H x 7-7/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels) 75 x 4
Peak Power Output (Watts x Channels) 200 x 4
Power at 2 Ohms (Watts x Channels) N/A
Bridged Power (Watts x Channels) 200 x 2
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2
Best Frequency Response 10-35k Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 77 dB
Input Voltage 14.4v
Features
Amplifier Class FD
Low-Pass Crossover Frequency 40-500 Hz
Low-Pass Slope (dB/octave) 12 dB/oct
High-Pass Crossover Frequency 40-500 Hz
High-Pass Slope (dB/octave) 12 dB/oct
Bass Boost N/A
Bass Boost Frequency N/A
Fan Cooled No
Fuse Rating 40
Speaker Level Inputs RCA/Speaker Adapt.
Preamp Outputs 1 pair
Width (inches) 10-11/16
Height (inches) 2-3/16
Depth (inches) 7-7/8
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • One 40 amp ATO fuse (installed)
  • Two 9" Speaker-level input adapters
  • Four 0.75" Self-tapping screws
  • Owner's Manual (Eng/Fre/Spa)
  • Warranty Information

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

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 Specifications:

  • 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 output power.

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.

Controls

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 adjustments.

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.

Connections

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 and loosen the terminals.

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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Pioneer GM-D9500F Reviews

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Filter by rating:
5 out of 5

Pioneer GM-D9500F

Written By Jasen E., Orlando, FL on Saturday, November 13, 2010
Crutchfield Customer Review (What's this?)
 
Great amp, easy to install and one of three amps thats is 4 channel yet fits in a compact
space. Thanks Crutchfield for all your help.
4 out of 4 people found this helpful
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5 out of 5

Great little amp!

Written By KevK, Mac, Ks. on Friday, October 15, 2010
Crutchfield Customer Review (What's this?)
 
Had previously purchased a larger amp. After finding out that the amp was much to big (dimension wise) for my vehicle (Honda S2000). I did some research on the Pioneer GM-D9500F and liked what I saw and read about the amp. Sent back the larger amp and bought the Pioneer. Wow! What a little powerhouse! I have it powering my front Infinity Kappas and my 12" Pioneer sub. Provides plenty of power, just warm to the touch, and I love the small form factor. This is a awesome little amp and i would recommend this little jewel to any who wants to save space without sacrificing power.
12 out of 12 people found this helpful
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1 out of 5

Works but has a hum to it.

Written By Troy, Jacksonville, NC on Thursday, October 14, 2010
Crutchfield Customer Review (What's this?)
 
Bought this to go with my pioneer head unit and speakers. This amp works well but has a hum to it. I am not a novice to auto audio installing, troubleshooted everything from A to Z, and turns out that the amp itself is the cause of the hum. Adjust the gain and no matter where I set it the hum remained. Disappointing since the head unit and speakers I have from the premier line are really awesome. Will be sending this one back.
4 out of 19 people found this helpful
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5 out of 5

Pioneer GM-D9500F

Written By BillS, Rochester, NY on Thursday, June 03, 2010
 
Took a chance on this one, there were few reviews to use. What a great amp!! Great
sound, small size fits under the passenger front seat. Hardly any heat and does this
thing rock!! Tremendous sound in my Z28 even with the T-Tops off. I can't imagine much
better for the price.
16 out of 18 people found this helpful
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