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Polk Audio PA D5000.5

5-channel car amplifier — 70 watts RMS x 4 at 4 ohms + 500 watts RMS x 1 at 1 ohm

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  • Polk Audio PA D5000.5

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  • Polk Audio PA D5000.5

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Item #: 107PAD5K5
 

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Our take on the Polk Audio PA D5000.5

by Buck Pomerantz
Polk Audio

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.

Small amp amp that'll power your whole system

Polk's PA D5000.5 5-channel amplifier may be small, but it can power your complete system, sending 70 watts RMS to each of your front and rear speakers and up to 500 watts RMS to a sub. Or, you can switch this little beast to 3-channel mode to drive a couple high-level components with 200 watts RMS each and still have that 500 watts RMS left over for the bass. Best of all, this powerhouse will fit in almost any location in your vehicle because of its convenient size and shape.

Read more

Handsome with a clear voice

Polk's Class D amp technology helps this amp reproduce music very cleanly, with no added coloration or distortion. Adjustable high- and low-pass filters help you to tune your system, keeping bass away from full-range speakers and high notes away from subs.You'll find that the subsonic filter's a big help for tuning your sub in a ported enclosure. Polk includes a wired remote, so you can control the subwoofer level from your front seat. This amp's tough, good-looking stainless steel case won't tarnish, even in very humid conditions.

Highlights:

  • 5-channel car amplifier
  • 70 watts RMS x 4 + 200 watts RMS x 1 at 4 ohms
  • 100 watts RMS x 4 + 400 watts RMS x 1 at 2 ohms
  • 200 watts RMS x 2 in bridged mode at 4 ohms + 500 watts RMS x 1 at 1 ohm
  • variable gain, high-pass filter (40-400 Hz 12 dB/octave), and low-pass filter (80-4000 Hz, 12 dB per octave) for front channels
  • variable gain and high-pass filter (40-4000 Hz 12 dB/octave) for rear channels
  • variable gain, low-pass filter (40-220 Hz, 12 dB/octave) and subsonic filter (20-38 Hz) for subwoofer channel
  • wired remote subwoofer level control
  • preamp inputs
  • fuse rating: 40A x 2
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 14-1/8"W x 1-13/16"H x 6-3/4"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) 70 x 4
200 x 1
Peak Power Output (Watts x Channels) N/A
Power at 2 Ohms (Watts x Channels) 100 x 4
Bridged Power (Watts x Channels) 200 x 2
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2
Best Frequency Response 20-20k Hz
THD at Rated RMS Power 0.1%
Signal to Noise Ratio 105 dB
Input Voltage 14.4v
Features
Amplifier Class D
Low-Pass Crossover Frequency 80-4000 Hz
Low-Pass Slope (dB/octave) 12 dB/octave
High-Pass Crossover Frequency 40-4000 Hz
High-Pass Slope (dB/octave) 12 dB/octave
Bass Boost No
Bass Boost Frequency N/A
Fan Cooled No
Fuse Rating 80
Speaker Level Inputs No
Preamp Outputs No
Width (inches) 14-1/8
Height (inches) 1-13/16
Depth (inches) 6-3/4
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Five channel amplifier
  • Remote bass level control
  • 17' Remote bass level control cable
  • Four 40 amp ATO fuses (2 installed/ 2 extra)
  • Four 1" Self-tapping screws
  • Owner's manual (English/ French/ Spanish/ German/ Italian/ Portuguese)
  • On-line product registration 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

Power Output:

  • 4Ω: 70 watts RMS x 4 and 200 watts RMS x 1
  • 2Ω: 100 watts RMS x 4 and 400 watts RMS x 1
  • 1Ω: 500 watts RMS x 1 (only the subwoofer section is 1Ω stable)

Input Mode: Set the input mode switch to 4-channel when using four outputs (front and rear) from your head unit, set to ST (stereo) when using two outputs from your head unit.

Source (subwoofer): Set the subwoofer source switch to Sub when using the dedicated subwoofer line input, set to Int when not using the subwoofer line input.

Front/Rear: The front, rear, and subwoofer sections have independent controls for gain and crossover settings:

  • Level Control: rotary gain controls; continuously variable from 200 mV to 6 V
  • Front Crossover Mode Switch: the front crossover has three mode options:
    • Full: crossover is bypassed
    • HPF: High Pass Filter
    • BPF: Band Pass Filter, both the high pass and low pass crossovers are engaged, useful for powering midrange speakers, or a subwoofer with the high pass crossover used as a sub-sonic filter
  • Rear Crossover Mode Switch: the rear crossover has two mode options:
    • Full: crossover is bypassed
    • HPF: High Pass Filter
  • Front High Pass Crossover Frequency: continuously variable from 40 Hz to 400 Hz
  • Rear High Pass Crossover Frequency: continuously variable from 40 Hz to 4 kHz
  • Front Low Pass Crossover Frequency: continuously variable from 80 Hz to 4 kHz
  • Subwoofer Low Pass Crossover Frequency: continuously variable from 40 Hz to 220 Hz
  • Subsonic Filter (subwoofer section only): continuously variable from 20 Hz to 38 Hz

Power/Ground: set screw terminals; accept bare speaker wire up to 4 gauge (4 gauge wire recommended)

Remote Turn-on: set screw terminal; accepts bare speaker wire up to 8 gauge

Speaker Terminals: five pair of set screw terminals; accept bare speaker wire up to 8 gauge

Line Level Inputs: three pair of nickel-plated stereo RCA jacks (front, rear, subwoofer)

Fuses: two 40-amp ATO fuses

 
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Polk Audio PA D5000.5 Reviews

Average Customer Review:

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4 out of 5

small/strong

Written By jeeves, vegas on Friday, September 27, 2013
 
easy to setup, provides clean power to 6.5 components in the front, 6.5 coax's in the back and a ten inch sub in the trunk. this thing cranks no problem, with the gain below half and my volume half way on the head unit it provides more than the volume i need.
Pros:
small, powerful
Cons:
wish it had just a little more juice to the sub channel
Was this review helpful?    Yes | No
 
5 out of 5

Great amp

Written By Milky, Atlanta, GA on Tuesday, November 20, 2012
 
This amp is fantastic, power is true as advertised and the sub section is stable to 1 ohm. It's really tiny and fits perfectly under the seat of my 2013 Mazda CX-5. I have it running off an audiocontrol LC6i and powering my OEM speakers for now and a single 12" sub at 4 ohms. Everything on the amp seems solid, and it's marine certified so you can use it in a jeep or a boat as well. It is capable of running all 5 channels off a single pair of RCA's if needed which makes installation very flexible. The included bass boost knob is great and there is a green light on it that is on when the amp is on. Overall I'm very happy with my purchase and would definitely buy this amp again.
Pros:
Small Size, Marine Certified, Flexible Setup, Remote Gain Included, Low Price
Cons:
I mounted it under my seat so it's hard to make adjustments. Fits perfect though.
4 out of 4 people found this helpful
Was this review helpful?    Yes | No
 

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