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Mono sub amplifier 600 watts RMS x 1 at 2 ohms
Item # 500PDXM6 | MFR # PDX-M6
Price Break: -$202.99
$297.00 Earn up to 297 Rewards points
Offers & Financing
Our take on the Alpine PDX-M6 by Crutchfield's Buck Pomerantz
Alpine packs Class-D amplifier technology into their PDX amplifiers for awesome power from a 2" tall frame. These small-but-mighty amps run so cool they can be stacked together into a single unit — their heatsinks couple together to cool the entire stack. Each amp offers an 8" by 10" footprint, so they'll fit in hatchbacks, trunks, truck cabs, and any vehicles with limited space.
The PDX-M6 mono amplifier supplies 600 watts of sub-cranking power from its amazingly compact body. Beefy internal components and clever engineering keep the power output strong and the noise low for superb fidelity and control. The adjustable low-pass filter tailors the amp's output to your specific system.
Front-mounted controls and pop-out connectors
Front-mounted controls make post-installation adjustments a snap, even when multiple amps are stacked together. Nifty removable speaker and power wire plugs make it easy to install or remove an amp, while ensuring a tight connection and guaranteeing that your speakers work in unison. Gold-plated RCA inputs, outputs, and power connections resist corrosion and signal degradation.
You can control the volume of your MRV-M500 from the front seat with the optional RUX-KNOB remote bass controller.
Anonymous, Tallahassee, FL
What's in the Box:
- Monoblock class-D amplifier (with four 20A ATO fuses inserted in chassis)
- Battery connector plug
- Speaker connector plug
- 2 Stacking plates
- Four M3 x 7mm machine screws
- Four M4 x 24mm machine screws
- Four M4 x 36mm self-tapping screws
- 2 Hex-keys (Small/Large)
- Owner's Manual (Eng/Fre/Spa)
- Verification Certificate
- Limited Warranty Card
- Customer Care Registration Card
- mono subwoofer amplifier
- 600 watts RMS x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms)
- CEA-2006 compliant
- stackable installation design with front-panel controls
- variable low-pass filter (50-400 Hz, 24 dB/octave)
- switchable subsonic filter (off, 15 Hz, 30 HZ)
- quick-connect speaker and power connectors
- preamp-level inputs and outputs
- Class-D amplifier design
- MOSFET power and output stages
- optional RUX-KNOB wired remote level control
- fuse rating: 20A x 4
- 4-gauge amp wiring kit with 80-amp fuse recommended wiring and hardware not included with amplifier
- 10-1/8"W x 2-1/16"H x 8-5/8"D
- warranty: 1 year
- Our 60-day money-back guarantee
Alpine PDX-M6 Reviews
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Features and Specs
|RMS Power Output (Watts x Channels)||
600 x 1
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||600 x 1|
|Bridged Power (Watts x Channels)||N/A|
|Minimum Impedance Bridged||N/A|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||5-400 Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||95 dB|
|Low-Pass Crossover Frequency||50-400 Hz|
|Low-Pass Slope (dB/octave)||24 dB/oct|
|High-Pass Crossover Frequency||N/A|
|High-Pass Slope (dB/octave)||N/A|
|Bass Boost Frequency||N/A|
|Speaker Level Inputs||No|
|Preamp Outputs||1 pair|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
PDX Amplifier Design: Class-D amplifiers boast higher efficiency, produce much less heat, and draw less current than traditional Class-AB amps. The PDX series is Alpine's super-efficient power density design of full-range and monoblock class-D amps. They combine MOSFET power supplies, MOSFET final outputs, and a thermal management processor, along with a 6-Layer Glass Epoxy PC Board to create a high-end sound quality without the bulky heat sinks required by most amps with this much power.
STAR Topology: Alpine's unique STAR (Signal Transit for Accurate Response) Circuit PCB design provides a single common ground for all amp sub-blocks, preventing ground interference and minimizing internal noise.
Power Management Processor: The Alpine PDX amplifier incorporates Alpine's new Power Management circuit. The Power Management Processor controls all aspects of amplifier performance, monitoring voltage, temperature and output to ensure uninterrupted power output for non-stop listening.
Uninterrupted Protection Circuits: If the amplifier gets too hot, the Thermal Protection circuit kicks in and gradually decreases output power until it cools down. Once cool, the power output automatically increases back to the previous level. If the circuit detects a Low Battery condition, it will gradually decrease power output if battery voltage becomes too low. Once the battery voltage increases, power will be restored. This interruption-free design allows for non-stop enjoyment with no hiccups or drop-outs, just clean, clear output.
Monoblock Design: The Alpine PDX-M6 is a monoblock subwoofer amplifier designed specifically to handle low frequencies between 5 and 400 Hz.
Low Impedance Stability: This amp is stable at low impedances and is capable of its rated power (600-watts x 1-channel) from 2 to 4 ohms. This allows excellent flexibility with multiple speaker and subwoofer loads and is adjusted automatically.
CEA 2006 Compliant: The PDX-M6's 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.
- 4-ohm Load: 600 watts x 1-channel in 4-ohms @ 20 to 400 Hz with 1% THD+N
- 2-ohm Load: 600 watts x 1-channel in 2-ohms @ 20 to 400 Hz with 1% THD+N
Verification Certificate: The amplifier comes with a certificate that lists the RMS power output of the individual amplifier. It also lists the model number, serial number, test date, and the test conditions (14.4 volts, 4 ohms).
Ultra-Wide Frequency Response: The Alpine PDX-M6 offers a super-wide, frequency range (5-400Hz) for unparallel sound quality and detail.
Ultra-Low Output Impedance: With ultra-low output impedance, the PDX-M6 offers extremely controlled, tight bass for unprecedented sound quality. The amplifier's Damping Factor is rated at >1,000.
High Signal-to-Noise: This amplifier is capable of of S/N ratios up to 95dB S/N @ 1W, 123dB S/N at rated power for extremely clean, uncolored sound. The PDX amp delivers crystal clear music every time, without unwanted background noise or static.
Beefy Power Supply: The PDX amplifier's power supply delivers tremendous headroom with low distortion and noise. The PDX amplifier has an extremely high total system efficiency of ~80% (power supply is rated at >90%, output stage is rated >90%).
Stackable: The PDX series amplifiers are 20% thinner than previous models at only 2" thick. A newly designed stacking system packs the amps closer together so there are no gaps and to save space in the trunk while directly coupling the amps heatsinks to help share cooling duties.
Notes: When stacking multiple amplifiers, do not install vertically or at an incline. Any stack installation other than parallel to the vehicle floor, invalidates the warranty.
LED: The top mounted LED Power indicator glows blue when the amplifier is turned on.
Hidden Controls: The Alpine PDX amplifier's controls are hidden behind a decorative front-panel. The front-panel is removed by unscrewing one machine screw with the supplied hex key and then prying the front panel open.
Gain Control: The PDX-M6 provides independent rotary controls for the front and rear channels to set the amplifier's gain according to the level of the incoming signal. The gain settings is continuously variable from 0.1V to 8.0V.Subsonic Filter: Also called an infrasonic filter, a subsonic filter cuts off extremely low bass (below the range of human hearing) that many speakers cannot effectively reproduce, thereby making the amp's power supply and output devices, and the speaker, more efficient. The subsonic filter can either be set to 30Hz, 15Hz or Off.
Low Pass Filter: The amplifier features a built-in Low Pass Filter with a rotary, variable adjustment knob which permits adjustment of the crossover frequency, by rotating the knob to select any frequency between 50 to 400 Hz (-24 dB/oct) as the crossover point.
Wired Remote (optional): Simply add Alpine's wired remote control (500RUXKNOB, sold separately), and get full control from the front of your vehicle for remote bass adjustments. You also have the ability to control multiple amps from just one controller with simple telephone cord adapters (also sold separately).
Terminal Layout: For wiring convenience, all of the inputs and outputs on the amplifier are on one side.
Quick Connect Plugs: The PDX series amplifier uses quick connect plugs to attach your system's speaker wires and power cables to the amp for a simple, error-free installation.
Quick Connect Speaker Terminals: The Alpine PDX-M6 includes a quick connect high-power speaker terminal. Bare speaker wire, up to 8 gauge, is held in place by two screw-clamps on the quick connector. The speaker terminal quick connector then plugs into the amplifier.
Quick Connect Battery Terminals: The removable battery terminal quick connector features a low-loss, high-current design. It accepts up to 4GA wire for power and ground, to ensure your amp gets the power it needs while allowing for easy installation. The remote-turn on lead will accept up 12 gauge wire. The power, ground, and remote-turn on lead are secured by set-screws on quick connector. The battery terminal quick connector then plugs into the amplifier.
Line Level Input: The Alpine PDX-M6 is equipped with two gold-plated female RCA jacks.
Line Level Output: In addition to the line inputs, the PDX-M6 has non-fading left and right female RCA outputs for extra system flexibility, so you can daisy-chain a second PDX monoblock amplifier.
Fuses: The Alpine PDX-M6 is equipped with four 20-amp ATO fuses.
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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 verify what’s in the box, 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.
3 questions already asked
1 answer Hi, I currently own an Alpine MRV-M500 that powers two JL Audio 10W3v3-4's(wired in parallel) in a sealed enclosure. I like the PDX-M6 for the extra power, but I also notice it has a subsonic filter - the MRV does not have this filter. So my question is, do I need a subsonic filter? Would I notice the difference if I used one? Thanks in advance. [ Karl Mar 06, 2017 ]
The filter can be in the off position or 15Hz or 30Hz. If you set it at 15Hz it will roll off 15Hz and lower to minimize the amount of power your amp is wasting trying to produce sounds you can't hear. Even if you set it at 30Hz it slowly rolls off below that, so you will still hear 25Hz, but the volume will start to reduce on those low tones. Mine is set at 15Hz. [ Vince Mar 06, 2017 ]
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget. [ Kenny May 25, 2016 ] Staff
1 answer I got one of these off a friend It didn't have the terminal connectors I saldered in 8gauge wire to the positive negative on circuit board it works but it really isn't pushing 600 watts could this be cause the terminals are important factor or could it be adjustment issue power issue I seen it's rated 600w at 14.4 volts that's next to impossible for me to achieve in my vehicle. Also could it be that the rux knob was turned down then unpluged? [ Rj Jan 13, 2015 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Krissy Jan 16, 2015 ] Staff