Sony XM-D9001GTR

Mono subwoofer amplifier
900 watts RMS x 1 at 2 ohms

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Item# 158XM9001

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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.

Our take on the Sony XM-D9001GTR

by Ken Nail

Sony's Xplod amps combine form and function in a mix that'll make your system look and sound great. On the outside, the sleek inverted heat sink keeps vital internal components running cooler and lasting longer. Removable terminal covers keep all the wire connections protected and out of sight for a clean-looking installation.

Underneath the hood, the XM-D9001GTR mono amplifier delivers 550 watts to a single 4-ohm sub, or 900 watts to a pair of subs — plenty of power for even the most demanding subwoofers. Signal-sensing speaker-level inputs activate the amp automatically when it's connected to a factory radio, so there's no remote turn-on lead for you to install.

You can adjust the frequency filter to tailor the signal going to your subs, while a bass boost adds extra punch to the lows. Preamp outputs simplify setup when it's time add another amp to your system.

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Highlights:

mono subwoofer amplifier
550 watts RMS x 1 at 4 ohms (900 watts RMS x 1 at 2 ohms)
2-ohm stable
low-pass crossover (50-300 Hz, 12/24 dB/octave)
variable bass boost (0-10 dB at 40 Hz)
MOSFET outputs and power supply
CEA-2006 compliant
speaker-level inputs with high-level sensing
preamp inputs and outputs
4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
15-13/16"W x 2-3/16"H x 10-13/16"D
warranty: 1 year
Our 60-day money-back guarantee

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Features and specs chart | What’s in the box? | In-depth notes

Features and Specs

Performance
RMS Power Output (Watts x Channels) Loading...	550 x 1
Peak Power Output (Watts x Channels) Loading...	950 x 1
Power at 2 Ohms (Watts x Channels) Loading...	900 x 1
Bridged Power (Watts x Channels) Loading...	N/A
Minimum Impedance Bridged Loading...	N/A
Minimum Impedance Unbridged Loading...	2
Best Frequency Response Loading...	5-300Hz Hz
THD at Rated RMS Power Loading...	1%
Signal to Noise Ratio Loading...	65 dB
Input Voltage Loading...	14.4v
Features
Amplifier Class Loading...	D
Low-Pass Crossover Frequency Loading...	50-300 Hz
Low-Pass Slope (dB/octave) Loading...	12/24 dB
High-Pass Crossover Frequency Loading...	N/A
High-Pass Slope (dB/octave) Loading...	N/A
Bass Boost Loading...	0-10 dB
Bass Boost Frequency Loading...	40 Hz
Fan Cooled Loading...	No
Fuse Rating Loading...	30 x 3
Speaker Level Inputs Loading...	Harness
Preamp Outputs Loading...	1 pair
Width (inches) Loading...	15-7/8
Height (inches) Loading...	2-1/4
Depth (inches) Loading...	10-7/8
Parts Warranty Loading...	1 Year
Labor Warranty Loading...	1 Year

Product Research

What's in the box?

Download owner's manual

Mono amplifier with three 30A fuses inserted into the chassis
7.5" Speaker-level input harness (with 4-pin Molex plug on one end)
4 Hex-head self-tapping screws
Operating instructions (English/French)
Warranty sheet

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Features
Inputs and Outputs Notes
Wiring Recommendation

Features

Protection Circuitry: The Sony XM-D9001GTR amplifier has 3-way protection circuitry, which protects the amplifier in the following cases:

Thermal: shuts off the amp when the operating temperature is too high
Short circuit: shuts off the amp when the speaker outputs are short-circuited
DC Offset: shuts off the amp when the speaker wires or ground lead is not securely connected, generating direct current

Low-pass Filter: The internal low-pass filter can be adjusted from 50 to 300 Hz. The slope of the filter can be set to 12 dB or 24 dB per octave.

Bass Boost: For added low frequency performance, this amplifier has a 0 to +10 dB variable bass boost centered at 40 Hz.

Subsonic Filter: The subsonic filter allows the amplifier to block ultra-low frequencies that your subs can't reproduce, improving the efficiency of your speaker system. The filter can be set to 6 Hz or 70 Hz. The slope of the filter can be set to 12 dB or 24 dB per octave.

Preamp Outputs: The 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.

Inputs and Outputs Notes

Power Connections: The power and ground connections are 0.547" wide screw terminals that will accommodate up to 4-gauge wire. The remote turn-on terminal is 0.349" wide and will accept up to 8-gauge wire. A Phillips-head (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The speaker terminals are also 0.349" wide and will accommodate up to 8-gauge wire. A Phillips-head (not supplied) is required to tighten/loosen the terminals.

High Level Input: The amp comes with a 2-channel speaker-level input harness with a 4-pin Molex plug on one end. This allows you to more easily connect this amplifier to a factory deck or a receiver without preamp outputs.

Wiring Recommendation

Amplifier Wiring: This amplifier uses three 30-amp fuses, so its total fuse rating is 90 amps. Since pre-packaged 4-gauge amplifier wiring kits normally have 60-amp or 80-amp fuses, you will need to replace the fuse and fuse holder in the kit with a 100-amp ANL fuse (item # 211FANL100) and ANL fuse holder (item # 211FHXL4).

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5 out of 5

awsome

Written By wesley, Stroudsburg, PA on Friday, January 25, 2008

i use this amp to push a 15" KICKER SOLO BARIC and let me tell you i have used about three amps to push this sub and 1 out of 4 has survived, the last one i bought....THIS ONE..........all the others blew or melted while trying to keep up with the sub's power.....man when i say i have had this amp from my wifes car to my truck and now....lol in my house with a converter box .....what a thump....if you looking for an amp that will push get this one...nothing except extrem power can keep up with my kicker and this sony has handled it every day.....good luck shopping but i know youll be back to this one.....

2 out of 2 people found this helpful