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Pioneer TS-WH500A

150W HVT 8-1/4" Sealed Active Subwoofer Enclosure

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List price $360.00

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Pioneer TS-WH500A

150W HVT 8-1/4" Sealed Active Subwoofer Enclosure


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Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)



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General Features:

  • 8-1/4" sealed active subwoofer enclosure
  • Power Handling:
    • Peak: 150 watts
    • RMS: 50 watts
  • Polypropylene cone construction
  • Rubber surround
  • Impedance: 4 ohms
  • Frequency Response: 20-20,000 Hz
  • Sensitivity: 98dB
  • HVT enclosure design
    • Horizontal Vertical Transforming technology
    • Transforms horizontal movement into vertical movement of a woofer diaphragm
    • Produces true, powerful and wide-range bass
  • Unique linkage mechanism allows the magnet and voice coil to be positioned horizontally and to either side of vertically moving dual speaker diaphragms
  • 2-3/8" height provides easy installation options
  • 1-year Sonic Electronix Warranty

Amplifier Specifications

Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.

Subwoofer Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
50 watts
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
150 watts
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
98 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 200 Hz
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle

Enclosure Specifications

Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
The height of the item, measured from top to bottom, in inches.
Box Exterior Color
The color of the enclosure's exterior/outer finish.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Muncie, IN

Good SQ for the size

July 9, 2015

Fits under seat of Honda Fit.
Good sound quality, output is enough to shake rear view mirror.
No noticeable distortion
Solid construction and very durable.
You will feel it under seat but sounds better if you can fit it up under your dash.

25 of 30 found this helpful

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Warner Robins Ga

Verified Purchase
great product!

July 2, 2015

great small compact power amp for power and amazing size fit perfectly in my regular cab ranger . All so great price ! Cheap's on they web that had a great selling ratings.

22 of 28 found this helpful

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North Kingstown, RI

Verified Purchase
BMW E46 (3 Series) underseat powered subwoofer

November 25, 2016

I chose the Pioneer TS-WH500A for one primary reason - its 2-3/8" height was what I needed for the unit to fit under the passenger seat in my BMW 323i. In this model year (2000) the OEM underseat subwoofer was not an option, so you have to add your own to fill out the bass tones that were missing, even with the BAVSOUND upgraded speakers. The Pioneer TS-WH500A unit added just the right amount of bass for the 323i's relatively small interior space. Installation was relatively straightforward, and the unit tapped directly into the rear shelf speakers through a simple splice. Very pleased with the performance, and the price was more than justified.

0 of 0 found this helpful

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Impulse Music

Virgin Islands, British

Verified Purchase
Best Under seat Subwoofer

April 18, 2016

I was a bit worried after i bought this subwoofer and let me tell you WOW this thing ROCK am loving it great sound tight Lows without Distortion

0 of 0 found this helpful

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Great Value

February 27, 2016

The product came is God and came in the time

0 of 0 found this helpful

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Great Value

February 27, 2016

These is very good product the best of the mini subwoofer.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added


Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

Your Price $53.99

Dynamat Xtreme 20' Trunk Kit 19405

20 ft. Trunk Kit with (5) Dynamat Extreme 18" x 32" Pieces

Your Price $94.95

Boom Mat Damping Material (050210)

20.8 sq.ft Damping Material - (10 pk - 12-1/2" x 24" x 2mm )

Your Price $109.99

Browse 3 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
The lowest profile underseat subwoofer I could find that would fit in my car - BMW 323i.
David K on Oct 24, 2016
The compact size to fit under a seat.
Ryan W on Oct 23, 2016
Does it work with the 4000NEX RCA Subwoofer Output?
Kotarou on Apr 23, 2015
What is the length and width?
A shopper on Apr 20, 2016
· Add Answer · I Have This Question Too (9)

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Pioneer TS-WH500A