Name: Alpine PWE-S8-WRA
Brand: Alpine
SKU: 500PWES8WR
Price: 549.95 USD
Availability: InStock
Rating: 4.5 (22 reviews)

by Crutchfield's Bob Bihlmayer

Bass for your Wrangler

Whether you're on- or off-road, there's one thing that's missing from your Wrangler Unlimited: deep, accurate bass. Alpine's PWE-S8-WRA compact powered subwoofer installs neatly under your driver's seat so you can add bass without losing any space.

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Bass for your Wrangler

Compact design

The PWE-S8-WRA features an 8" sub powered by a built-in 120-watt amplifier, all housed in a compact enclosure which mounts under your seat with the included brackets. The package also includes plug-and-play wiring harnesses to connect this Alpine sub to the Wrangler's factory or aftermarket radio.

Bass control

You can adjust phase, gain, and the low-pass crossover to tailor the bass to your tastes. You can mount the sub's wired remote on your dash, so you can make easy level adjustments from the driver's seat.

Rugged enclosure

The cast-aluminum enclosure protects the sub and amp from rough on- and off-road conditions. It'll stand up to a thumping and keep on bumping. (Note: this sub only works with Wrangler Unlimited models without a factory sub.)

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Product highlights:

powered subwoofer with cast aluminum enclosure
8" woofer high-excursion cone
built-in Class D amplifier (120 watts RMS/240 watts peak)
designed for 4-door Wrangler Unlimited models without factory subs
frequency response: 32-150 Hz
variable low-pass crossover (80-200 Hz)
variable phase control (0-180 degrees)
dimensions: 13-1/2"W x 9"H x 3"D
warranty: 3 years
MFR # PWE-S8-WRA

What's in the box:

Alpine PWE-S8-WRA owner's manual

Amplified enclosure with one 8" subwoofer installed
80" Wiring harness (Power/ Ground/ Speaker level input)
Wrangler radio T-Harness (with in-line fuseholder)
Two 15 amp ATO fuses (one installed in the power wire fuse holder/ 1 spare)
Remote level control with 15' cable attached (3.5mm mini-plug on the end)
Adhesive backed hook and loop mounting fasteners (to mount the remote)
2 Wrangler mounting brackets
Eight M4x10mm Machine screws (each with a flat washer and split lock washer)
Four M6x10mm Machine screws
Fifteen 7" Zip ties
Installation instructions
Owner's manual (English/ French/ Spanish)
Warranty information
On-line product registration information
System installation notice

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22 reviews

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Researched by Crutchfield's Pat M.

Product Research

Features

Installation: The PWE-S8-WRA mounts to the bottom of the driver's seat in select 2011 and later 4-door Jeep Wrangler Unlimited models. The included T-Harness plugs in between the radio and factory harness, and supplies the subwoofer with power and speaker level input. The sub is grounded to a factory ground bolt in the floorboard.

Auto Turn-on: When using the included T-Harness to integrate into the factory speaker level signal, an automatic circuit turns the amplifier on when it senses an input signal.

Low Pass Filter: The amp has a built-in low-pass filter, variable from 50 to 150 Hz.

Wired Remote: Using the included wired remote you can easily adjust the bass output level from the driver's seat (or wherever you mount the remote). The range is 0 to -20 dB, relative to the gain setting on the subwoofer chassis.

Controls:

Gain: rotary control; 1.5-30 volts speaker level
Low Pass Filter: rotary control; 50-150 Hz
Phase: two position switch; 0° or 180°

Connections:

Harness: the included 80" harness contains power (+12 volts), ground (ground lead is 24" long with a ring terminal), and speaker level inputs (left and right)
Remote: 3.5mm mini-jack for use with the included wired remote

Dimensions:

Width: 9.062" (10.982" including mounting brackets)
Height: 2.875"
Depth: 9.062"

Tools Required:

Panel removal tool
#2 Phillips head screwdriver
T30 Torx driver
T45 Torx driver
Ratchet
Ratchet extension
7mm Socket
10mm Socket
18mm Socket
Drill
9/32" Drill bit

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15 questions already asked

Will this work with jbl club speakers 8622?

barbara Oct 07, 2023

1 answer

This 2011 and up Jeep Wrangler specific Alpine PWE-S8-WRA would be a great paring with a JBL Club 8622 speaker setup, Barbara. The JBL speakers play crisp and detailed and are designed to be extremely efficient, and this Alpine subwoofer can anchor the low-end bass!

bo Oct 07, 2023 (Staff)

Why does the blue LED power light stay on? I'm triggering the subwoofer with speaker line level inputs and have it connected directly to my battery with a 15A in-line fuse. The sub works great yet when I power down the head unit the blue power LED stays on and remains on. Is this normal?

mark Dec 05, 2022

1 answer

If you purchased the subwoofer from Crutchfield, feel free to contact our Tech Support team. 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.

zachary Dec 05, 2022 (Staff)

Does this sub have any water resistance?

micah Jun 27, 2022

1 answer

Greetings Micah, and thank you for your question. The Alpine PWE-S8-WRA, Jeep Wrangler specific subwoofer has no IP rating. As a matter of fact they recommend no mounting in a place that has a risk of moisture.

hogan Jun 27, 2022 (Staff)

Can I use this with an after market Radio with my Jeep 2017 unlimited? I kno wyou need to use RCA cables but I also read you may need to run an "amp turn on lead?" What is that and is that something I can purchase through Crutchfield.

mark May 18, 2021

1 answer

Yes, you can run it with an aftermarket radio, I did. An amp turn on lead, is a wire that comes from the radio that has 12volts when the radio is turned on. This turns on the sub woofer. Some radios will have a wire specially for that purpose usually orange, or you could use the antenna wire usually blue. This blue wire is not for the antenna to get radio signals, but has 12 volts when the radio is on, to raise up a power antenna. You will also need to run a wire direct to the battery with a in-line fuse. You will want plenty of current/power available for the subwoofer.

lee May 19, 2021

Hey I bought one of these and it was awesome but unfortunately I blew the sub out. Would I have to buy a whole new unit or can I get a replacement speaker? And which one would I replace it with?

joseph Oct 09, 2020

Hey I bought one of these and it was awesome but unfortunately I blew the sub out. Would I have to buy a whole new unit or can I get a replacement speaker? And which one would I replace it with?

joseph Oct 09, 2020

Can I use this to filter out low frequencies (bass) from the 4 main speakers?

russell Sep 11, 2020

1 answer

No the amp has its own Filter for the bass frequencies coming out of it only. Your main speakers have to be controlled by your radio or their own amp

raul Sep 11, 2020

Will this fit under the back seat?

richard Jun 08, 2020

1 answer

No, the brackets would not work and the wiring will be to short. It fits under the driver's seat very nicely. Not to complicated installation.

john Jun 22, 2020

ok, I have installed a new Kenwood ddx6704s and a clarion amp and a maestro idatalink into my 2018 JKU, can I add this sub and will this just plug in between the factory and maestro plug and work as it should?

jeffrey Jun 17, 2018

1 answer

As far as I know, yes, that's all you would have to do. I'm not using a iDatalink Maestro, so I can't say with absolute certainty that it will but it plugs between the factory harness and the factory harness adapter that Crutchfield supplies for head units, so I'm assuming it would plug between the factory harness and the Maestro unit.

jeremy Jun 23, 2018

Why this is $200 more than the non-Jeep version? It seems like a steep price to pay for a harness, two small brackets, a few screws and 15 zip ties.

michael Mar 23, 2017

1 answer

Thanks for your question. For information on comparing the different options 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.

kenneth Mar 24, 2017 (Staff)

Maybe its my lack of Sub-woofer knowledge- but would putting it under the seat dampen the sound? I am so close to buying this because of the ease of setup with the harness , But I am afraid the sound will be distorted or rattling because of the placement under the seat.

mark Mar 22, 2017

3 answers

With bass, you feel more than hear. And even mounted to the seat, it resonates throughout the entire cab.

adam Mar 23, 2017

I have this subwoofer and it is easy to install, and sounds great, not muffled at all, the speaker aims towards the floor so the base comes out just fine, it will vibrate your but if it's turned up loud, also I do suggest hooking up the aux power wire and don't depend on the sense

eric Mar 22, 2017

The deep sounds of a subwoofer don't need the direct line to your ear that the higher pitched notes need. This subwoofer is small in comparison to most so my initial fear was not enough sound. I have found the placement ideal, and the adjustments to both sub volume and crossover frequency (both are adjustable on this unit) take more time to dial in that the actual installation of the unit. After 3 months no issues. This thing is amazing and the best modification if you are keeping the stock radio.

mark a Mar 22, 2017

Will this fit under the passenger seat as well? I am thinking about running two of them.

brian Mar 09, 2017

1 answer

To my knowledge, no. The two brackets are different. The inboard (transmission tunnel side) one is wider at the base which, if you have the creativity and materials, you could always mimic the brackets that come with the driver's side one and make some brackets for the other side. Unless you were running RCA's from an aftermarket head unit, you would probably run into impedance issues if using the high level (speaker level) hook up method and running two of the units. Also, if you were going to try to run two and had to make your own mounting brackets for under the passenger seat, it would probably cost a little less to simply get the non "WRA" version of the sub for the second sub.

jeremy Mar 11, 2017

How is this able to power without connection to the battery? Are there other units with this similar setup (not needing to run power to the battery, or is this one of a kind.

mark Feb 17, 2017

2 answers

The supplied harness (that attaches to the factory stereo for speaked inputs) also taps the factory stereo power circuit so there is no requirement to run a separate power wire to the battery.

adam Feb 18, 2017

The unit has a direct connection to the plug and play adaptor that attaches between your head unit and the factory wiring. Super simple. The connection from the sub unit to the plug and play adaptor is fused, however I still had concerns about the factory fuse/relay being able to handle the added load. Reporting no issues even at high volume for extended periods. All is good. I have no knowledge of any other sub having a direct plug and play wiring harness like this. I appreciate not having to run the power wire through s firewall to the battery.

mark a Feb 17, 2017

How could I fit this on a 2015 with the Alpine sound system (Factory sub)?

sirnut Feb 07, 2017

1 answer

For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on how everything will integrate and what you will need for an installation in your vehicle.

kenneth Feb 07, 2017 (Staff)

Do they make this to fit a regular Wrangler?

jameson Jan 28, 2017

2 answers

I've only seen a version of the Alpine unit for the JKU (4 door). As you know, JK (2 door) front seat frames are different, as they swing forward to allow for rear passenger entry / exit, and it would be much more difficult to mount the sub to the seat rails as it does on the JKU. I'm not sure, but there also may not be sufficient room under the 2 door's seat frame due to the design of the frame to facilitate folding forward (a cross-member may be in the way, etc.).

jeremy Mar 11, 2017

For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit as well as other models that may work and what you will need for an installation in your vehicle.

kenneth Jan 28, 2017 (Staff)

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