Alpine PDR-V75

5-channel car amplifier — 75 watts RMS x 4 at 4 ohms + 350 watts RMS x 1 at 2 ohms

Item #: 500PDRV75

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4 Reviews | 2 questions - 3 answers

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Concentrated power for a full system

Alpine managed to pack more power per square inch into their PDR-V75 5-channel Power Density Reference amplifier than almost any other amp in its class. The PDR-V75 can put out 75 watts RMS per channel to your four full-range speakers, plus up to 350 watts RMS to a subwoofer, and it'll fit into many of the tight spaces you find in many cars and trucks these days. You can also use this versatile amp in 3-channel mode, driving a pair of high-performance speakers with 200 watts each, while still sending 350 watts RMS to a sub.

Tone control

Alpine included the tone controls you'll need to tune your system so your speakers and sub sound their best. You can use the high-pass filters to remove the extreme low bass from your full-range speakers, so they'll play more efficiently. You can adjust the subwoofer channel's low-pass filter, subsonic filter, and bass boost to get just the right bass tone, and you can add the optional RUX-KNOB remote bass knob to control your bass from the dash.

Superior sound and build quality

Alpine PDR-V75

Alpine built the PDR-V75 to exacting physical and electronic standards, resulting in a tough, powerful amp with an incredibly clean and noise-free output. All the electrical connections are located on one side, for more convenient and neat installations. Speaker-level inputs allow you to use this amp in almost any system, even one with a factory radio. And you can rotate the badge, so the Alpine logo can always display right side up, no matter which way you mount your PDR-V75.

Product Highlights:

  • 5-channel car amplifier
  • 75 watts RMS x 4 + 250 watts RMS x 1 at 4 ohms
  • 100 watts RMS x 4 + 350 watts RMS x 1 at 2 ohms
  • 200 watts RMS x 2 bridged at 4 ohms + 350 watts RMS x 1 at 2 ohms
  • CEA-2006 compliant
  • variable high-pass filter (50-400 Hz, 12 dB/octave) on 4-channel section
  • variable low-pass filter (50-400 Hz, 24 dB/octave) on sub channel
  • variable subsonic filter (8-40 Hz, 24 dB/oct) on sub channel
  • variable bass boost (0-12 dB at 50 Hz) on sub channel
More Features
  • optional remote level control for sub channel (RUX-KNOB)
  • preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
  • Class-D amplifier design
  • MOSFET power and output stages
  • fuse rating: 40A x 2
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 10-5/8"W x 2"H x 6-9/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

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.

Hands-on research

What's in the box?

Download owner's manual

  • 5-Channel Class-D amplifier
  • Two 40-amp ATO fuses (installed)
  • Four 3/4" Self-tapping screws
  • 3mm Allen wrench
  • 2mm Allen wrench
  • Self-adhesive Alpine logo plate
  • Owner's manual (Eng/Fren/Span)
  • Verification certificate
  • Warranty information
  • On-line registration information

Product Research

Features
Controls
Connections

Features

Channel Design: The Alpine PDR-V75 can be configured as a 5-channel amplifier for powering two pairs of speakers and a subwoofer. It can also be configured as a 4-channel or 3-channel amplifier. The amplifier is stable to 2-ohms in stereo, 4-ohms when bridged.

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring 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 into a 4Ω load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples). Using CEA-2006 criteria, the Alpine PDR-V75 is rated at 75 watts RMS x 4 channels and 250 watts RMS x 1 channel with an 87 dBA signal to noise ratio. The signal to noise ratio at the rated power output (not CEA-2006 conditions) is 105 dB for the full range channels and 110 dB for the subwoofer channel.

LED: The top mounted LED Power indicator glows blue when the amplifier is turned on and changes to red when the protection circuit is engaged.

Speaker Level Inputs: The RCA inputs will accept either speaker-level or line level signals from your car's head unit. A speaker level signal is connected to the RCA inputs using a speaker wire to RCA adapter (sold separately).

Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.

Verification Certificate: The amplifier comes with a certificate that lists the RMS power output of the specific amplifier. It also lists the model number, serial number, test date, and the test conditions (14.4 volts, 2 ohms).

Controls

Hidden Controls: The amplifier's controls are hidden under a cover plate. The plate is removed by unscrewing two machine screws with the supplied 2mm Allen wrench.

Independent Controls: There are independent controls and crossovers for Channels 1&2, Channels 3&4, and the Subwoofer channel:

  • Gain Controls: The rotary gain controls, for matching the amp's input sensitivity to the connected head unit, are continuously variable from 0.2 to 4.0 volts for the full range channels, and 0.1 to 4.0 volts for the Subwoofer channel. You'll need a small screwdriver (not included) for setting the gain.
  • Crossover: The full range channels (1&2 and 3&4) each have a -12 db/octave high-pass filter that can be turned on or off. The cutoff frequency can be set between 50Hz and 400Hz. The Subwoofer channel has a -24 dB/octave low-pass filter that cannot be turned off. The cutoff frequency can be set between 50Hz and 400Hz. The Sub channel's -24 dB/octave Subsonic filter can be set between 8Hz and 40Hz. It cuts ultra-low frequencies from the input signal before being amplified to protect the speakers and to minimize wasted power.
  • Input Channel: The two-position input switches configure the inputs. For the full-range channels, you can set the inputs to "1/2" (signal from inputs 1 and 2 are sent to channels 3 and 4--no Y-adapter necessary) or "3/4" (Channels 1&2 and 3&4 are independent--a 4-channel source is required). For the Subwoofer channel, you can set the inputs to "1+2+3+4" (signals from the full-range channels are mixed and sent to the SubW channel) or "SubW" (Left/Right signals from the SubW input are present).
  • Bass EQ: The Bass EQ circuit provides a variable 0 dB to +12 dB signal boost, centered at 50 Hz to the Subwoofer channel.

Remote Bass Control: Alpine's RUX-KNOB wired remote control (sold separately) plugs into the RJ-25 Remote Bass Control terminal, giving you attenuation control of the sub(s) from anywhere in the car (0 to -20 dB).

Connections

Terminal Layout: For wiring convenience, all of the inputs and outputs on the amplifier are on one side.

Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals accept up to 4-gauge wire (a 4-gauge wiring kit is recommended). The set screws are tightened/loosened with the included 3mm Allen wrench.

Remote Turn-on: The remote turn-on set screw terminal will accept up to 12-gauge wire. The set screw is tightened/loosened with the included 2mm Allen wrench.

Speaker Outputs: The five pairs of speaker outputs set-screw terminals will accept up to 12-gauge wire. The set screws are tightened/loosened with the included 2mm Allen wrench.

Signal Input: The Alpine PDR-V75 is equipped with three pairs of female RCA jack inputs: Channel 1(L)/2(R), Channel 3(L)/4(R), and SubW(L)/SubW(R).

Remote Bass Control: An RJ-25 jack is provided for the optional RUX-KNOB wired remote control.

Fuses: The amp is protected with two 40-amp ATO fuses.

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.

Alpine PDR-V75 Reviews

Average Customer Review:

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Great Amp

Written By Jimmy, Jacksonville, NC on Thursday, September 11, 2014

Crutchfield Customer Review (What's this?)

What a great amp and the size is great fit right under the passenger seat. Setup was easy and the sound is great.

Pros: Great sound, small footprint

Cons: none at this time.

Alpine Amplifier Rocks!

Written By Lancew, Bothell, WA on Wednesday, September 03, 2014

Crutchfield Customer Review (What's this?)

I had this amplifier installed in my new Kia Forte this past weekend. I wanted to keep the factory unit, but change out the speakers and add a sub. I am blown away every time I get into my car! This amp makes all the channels sound very clean, crisp, and powerful! You can't go wrong with this amp. I am very happy with it.

Pros: Clean, crisp, & powerful sound. Many superb features. Small and lightweight.

Cons: None.

Compact Power

Written By AJT, Sarasota, FL on Saturday, August 23, 2014

Alpine Verification Certificate rated the actual power output: 120x4 + 420x1 @ 2ohms 90x4 +350x1 @ 4ohms.





Very clean minimalistic design. Fits easily under the passenger seat of my Subaru WRX. Tremendous amount of power in a small package. I have this amplifier Bi-amping a set of Focal PS165V Components. Bass is very tight, and the highs are crystal clear. Exhibits outstanding definition and stereo separation. I cannot detect any audible distortion before the volume starts to hurt my ears ( :

I would not hesitate to recommend this amplifier to any car audio enthusiast.

Alpine PDR-V75

Written By Ed S., Rochester, NY on Monday, August 04, 2014

Crutchfield Customer Review (What's this?)

The unit was easy to install, amplified my Helix Esprit nicely. I really like the frequency adjustment capability when required.

Pros: More than enough power for me. Easy mounting and the package low profile and small.

Cons: none

Get everything you’ll need to enjoy your new Alpine PDR-V75

Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Add a remote and control your amp from the driver's seat.
For multi-amp systems, you'll need a separate fuse holder.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Have your new amplifier put in by a qualified professional in your area.
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Questions & Answers Ask the community. Share your knowledge.

2 questions already asked

Thank you very much Richard!!! [ Vicko Zlosilo  Dec 23, 2014 ]
Yes, I am fairly certain, as I am driving four coax/component speakers at 4 ohms and a JL Audio 12" sub at 2 ohms. Very similar systems, so no problems. [ RICHARD W  Dec 23, 2014 ]
Thanks for your question. For information on selecting the best amp 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 between the amp models and help you make the best choice for your system. [ Krissy  Nov 13, 2014 ]  Staff