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Pioneer TS-SW251 10" Shallow-Mount Subwoofer

Brand:| Model: TS-SW251
Overview
Pioneer's TS-SW251 10" subwoofer is designed to last longer with an air suspension system that maintains better sound after many hours of hard use.
Highlights
  • Get deep big bass from a small enclosure
  • Easy to install in virtually any vehicle
  • IMPP composite cone woofer
  • Dual 3-layer fiber-woven radial surround
  • 4-layer long-excursion voice coil
  • Extended and vented pole yoke
Part # 
297-290
Weight: 9.67 lbs.  
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Product Details

Pioneer TS-SW251 10" Shallow-Mount Subwoofer

In order to create a subwoofer that is three and a quarter inches deep, Pioneer had to develop revolutionary subwoofer technology. A traditional subwoofer uses the spider design to keep the voice coil of the speaker aligned while it moves. This type of set-up can become soft over time degrading the subwoofer's performance.

Pioneer created a patent-pending air suspension system that locks air between a main cone and a drive cone. The cones move together in unison, with the locked-in air behaving like a spring. The dual-cone structure is a spider-less design that maintains better sound linearity, and reliability even after many of hours of hard use. The pressure from the trapped air results in a consistent bass response across a wide frequency range. The result is a tight, precise movement with powerful and clean bass output.

The shallow subwoofer incorporates an innovative woven cloth reinforced radial urethane surround for improved power handling, reduced distortion, improved durability, and louder, more controlled bass. The surround is constructed of three layers — two of urethane and one of interwoven cloth. The interwoven cloth distributes strength throughout the surround material and improving its high power capability. The result is an extremely durable and resilient surround that resists puckering, even under intense power conditions.

Unlike traditional surrounds that use a single arch shape design, the Pioneer Shallow Subwoofer utilizes a patent-pending M-shape surround that provides superior sound linearity. The M-shape surround also has a lower height, and a lower fc or tuning frequency. The lower fc threshold translates to better and longer performance at lower frequencies.

Traditional subwoofer terminals are mounted horizontally or vertically. These mounts force wires to be bent to fit which can be difficult if low-gauge high performance wires are used. The Pioneer shallow subwoofer's patent-pending, angled push terminals make it easy to connect speaker wires. The straighter connection saves space and makes installation easier.

Traditional subwoofers push air downward. This creates a loading effect or area of pressure underneath the speaker which hampers performance and responsiveness. The rear of the powerful and slim Pioneer shallow subwoofer is designed with specially-shaped fins that channel the airflow sideways instead of downward. Air is continuously pushed in a circular motion, eliminating the loading effect or unwanted pressure of air behind the cone.



Product Specifications
  • Nominal Diameter10"
  • Power Handling (RMS)200 Watts
  • Power Handling (max)800 Watts
  • Impedance4 ohms
  • Frequency Response20 to 144 Hz
  • Sensitivity89 dB 1W/1m
  • Voice Coil Diameter2"
  • Magnet Weight36.33 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)41.3 Hz
  • DC Resistance (Re)3 ohms
  • Voice Coil Inductance (Le)2.4 mH
  • Mechanical Q (Qms)9.87
  • Electromagnetic Q (Qes)1.15
  • Total Q (Qts)1.09
  • Compliance Equivalent Volume (Vas)0.35 ft.³
  • BL Product (BL)11.78 Tm
  • Diaphragm Mass Inc. Airload (Mms)206.57g
  • Maximum Linear Excursion (Xmax)6.6 mm
Materials of Construction
  • Cone MaterialCarbon Fiber
  • Surround MaterialCloth
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter11"
  • Baffle Cutout Diameter9.36"
  • Depth3.13"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.38 ft.³
  • Sealed F343 Hz
  • Vented Volume2.43 ft.³
  • Vented F323 Hz
Pioneer TS-SW251 10" Shallow-Mount Subwoofer
  • BrandPioneer Electronics
  • ModelTS-SW251
  • Part Number297-290
  • UPC012562882055
  • Product CategoryCar Subwoofer Speakers
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight9.67 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Pioneer TS-SW251 10" Shallow-Mount Subwoofer
Pioneer TS-SW251 10" Shallow-Mount Subwoofer is rated 3.6667 out of 5 by 3.
Rated 1 out of 5 by from Pioneer TS-SW251 10" Shallow-Mount Subwooferthis woofer don't handle power and don't sound good blow it within a week my t3 t200 last longer then this one
Date published: 2013-09-07
Rated 5 out of 5 by from Great sub for small enclosureThis sub fit great in a small enclosure. I have it in about a .4 cubic foot fiberglass enclosure in a 2010 Honda CRV rear side panel. Sound is tight and full. I am missing a bit of the lower range (<30Hz) but I think that is more because of the small size of the sealed enclosure, not the subs fault.My only issue with the sub is that it does not come with a grill and I have been having a hard time finding one that fits over it and allows for its full excursion.Sorry for the poor quality of the attached image...
Date published: 2012-04-17
Rated 5 out of 5 by from Great Sounding Sub!We bought the speaker and built the engineered vented box. The sound was outstanding and it delivered really deep base with no distortion. Really happy with the whole thing! so much so that we ordered a second speaker and built a second box for another application.
Date published: 2012-03-16

Product Q&A

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Pioneer TS-SW251 10" Shallow-Mount Subwoofer

What are Box Volume and dimensions for Autosound apps?

I've got a small sport car (Miata) with VERY limited space. If I buy a spare tire relocater I can increase my trunk space, still... the .4 cu ft example would be a max. Do extreme dimensions affect performance? ex. ratios like 7 to 3 to 1. or !8"x 8.5" x 4.5"= appx. 0.4 cu ft.; or 20.5"x 7.4"x 4.5 = appx. 0.4 cu ft. I have an active x-over with bi amp for sub. Thanks; Cap'n Power
Asked by: Cap'n Power
This subwoofer is designed to work well in small spaces, and will provide excellent performance in sealed enclosures of 0.35 to 0.70ft³. The dimensions or relative proportions of the enclosure are not an issue with subwoofers, so you may build accordingly in order to maximize the space available to you.
Answered by: RussR
Date published: 2012-07-16

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