Precision Power S.15 Features, Parameters, & Dimensions, Enclosure Dimensions, Sealed Ported

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Thank you for choosing PrecisionPower woofers. Designed and engineered in the USA, this product combines innovative technol- ogy with the finest materials to consistently deliver Absolutely State of the Art™ performance, sound quality, reliability, and value. This PrecisionPower product reflects our commitment to offer you unparalleled performance and quality for years of dependable ser- vice and listening enjoyment.

Features, Parameters, & Dimensions

Injection Molded Polypropylene/Mica

Quick Disconnect Terminals

Cone & Dust Cap

CONEX Composite Spiders

ABS Gasket

Stamped Steel Frame

2” 4-layer VC on Kapton Former

Vented T-Yoke Back-plate

series wired

S.12

S.15

Fs (Hz)

22.89

19.52

Qms

3.57

4.279

Vas (ft³)

3.34

5.076

Cms (mm/N)

0.266

0.146

Mms (g)

181.5

456.7

Rms (kg/s)

7.311

13.09

Xmax (mm)

8.1

8.1

Xmech (mm)

12.15

12.15

Piston Diameter (in)

11.26

12.83

Sd (in²)

77.5

129.2

Qes

0.755

0.933

Re (Ω)

7.2

7.2

Z (Ω)

8

8

BL (Tm)

15.78

20.79

Rms Power (watts)

250

300

Qts

0.623

0.766

NO (%)

0.145

0.111

1w/1m SPL (dB)

83.64

82.47

2.8V SPL (dB)

84.22

83.06

Voice Coil Diameter (in)

2”

2”

Impedance (Ω)

DVC 4Ω

DVC 4Ω

M-vd (ft.3)

0.0956

0.174

Enclosure Dimensions

Included in this manual are a number of different enclosure sugges- tions. These are by no means the only enclosures to use, but they provide a starting point to determine the correct enclosure for your needs many factors must be addressed (amount of power, vehicle, placement, crossovers, etc) Therefore, as always PrecisionPower recommends that your subwoofer be installed by an authorized PrecisionPower dealer.

Enclosure Construction

All enclosures should be made of .75” (3/4”) material only. When possible, make the baffle 1.5” (1 ½) thick and add .75” (3/4”) to the depth of the enclosure to compensate. All volumes INCLUDE vent/ port and subwoofer displacements. DO NOT change the volume unless you plan on adding a substantial amount of bracing. For added performance, applying a coat of fiberglass resin to the interior walls will greatly improve sealing the enclosure. Adding a thin layer of poly-fill will improve response by smoothing out reflections within the enclosure.

Enclosure Recommendations

 

S.12 Sealed

 

 

S.12 Ported

 

 

Vol.

Dimensions

QTC

-3dB

Vol.

Dimensions

Port

Freq.

-3dB

(ft.3)

(H x L x D)

(Hz)

(ft.3)

(H x L x D)

(dia. X L)

(Hz)

(Hz)

1.00

13x14.75x13

1.221

35.5

2.00

14x23.75x14

4” x 12”

35

30.1

1.50

13x21.25x13

1.056

31.2

2.50

14x29.25x14

4” x 12”

28.1

25.8

2.00

13x27.75x13

0.962

30.2

3.00

14x34.75x14

4” x 12”

25.9

23.9

 

S.15 Sealed

 

 

S.15 Ported

 

 

Vol.

Dimensions

QTC

-3dB

Vol.

Dimensions

Port

Freq.

-3dB

(ft.3)

(H x L x D)

(Hz)

(ft.3)

(H x L x D)

(dia. X L)

(Hz)

(Hz)

2.00

18x17.5x15

1.361

27.1

3.00

17x23.25x17

4” x 12”

28.8

25.2

3.00

18x25x15

1.178

24.2

4.00

17x30.5x17

4” x 12”

24.7

21.5

4.00

18x33x15

1.076

22.7

5.00

17x37.5x17

4” x 12”

22

19

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Contents Page Enclosure Construction Features, Parameters, & DimensionsEnclosure Dimensions Enclosure Recommendations

S.12, S.15 specifications

Precision Power is renowned for its innovative approach to car audio technologies, and their S.15 and S.12 subwoofer models are prime examples of this ethos. Designed to deliver exceptional sound performance, these subwoofers cater to enthusiasts who demand both power and precision in their audio experience.

The Precision Power S.15 features a massive 15-inch driver, engineered to produce deep, resonant bass that fills any vehicle with immersive sound. Its robust construction includes a high-strength polypropylene cone, providing durability while maintaining superb audio fidelity. The S.15 is equipped with a high-temperature voice coil and a rubber surround that not only enhances linear excursion but also increases overall efficiency and performance.

In contrast, the S.12 offers a slightly smaller yet equally impressive 12-inch driver. This model is ideal for those seeking a balance between space and sound quality. The S.12 boasts similar high-quality components, including a reinforced cone and a high-temperature voice coil. Its design helps optimize airflow, minimizing distortion while maximizing response across a broad frequency range.

Both models incorporate advanced technologies such as a vented pole piece and a double-stacked magnet structure. These features work together to enhance thermal management, allowing for sustained high power usage without compromising reliability. The subwoofers also include integrated spider venting, ensuring airflow and cooling during extended playback periods.

Installation versatility is another hallmark of the S.15 and S.12 subwoofers. With a dual voice coil design, they provide flexibility in wiring configurations, allowing users to customize their system to match specific power requirements and preferences. Whether installed in a sealed enclosure for precise sound control or a ported box for enhanced bass response, these subwoofers adapt seamlessly.

Both models are engineered to handle high power levels, making them suitable for various amplifiers, thus accommodating a range of audio setups. The S.15 and S.12 from Precision Power stand as testaments to a commitment to quality sound reproduction, durability, and versatile installation options. Whether for daily driving or serious audio competition, these subwoofers deliver the powerful performance that listeners crave. With Precision Power, audiophiles can expect not just sound but an engaging audio experience that elevates their vehicle's sound system to new heights.