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
Cast Aluminum Basket |
| Aluminum VC Former | |||
Pressed Paper Cone |
| Dual Conex Spiders | |||
Aluminum Phase Plug | Reinforced Foam Surround | ||||
4 Layer Voice Coil |
| Compression Terminals | |||
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| series wired | PC.15DS |
| PC.18DS |
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| Fs (Hz) | 48.02 |
| 35.99 |
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| Qms | 7.247 |
| 6.391 |
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| Vas (ft³) | 2.184 |
| 5.329 |
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| Cms (mm/N) | 0.0698 |
| 0.0674 |
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| Mms (g) | 157.4 |
| 290 |
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| Rms (kg/s) | 6.555 |
| 10.27 |
|
| Xmax (mm) | 2 |
| 1.5 |
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| Xmech (mm) | 17 |
| 16.5 |
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| Piston Diameter (in) | 14.1 |
| 16.69 |
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| Sd (in²) | 122.45 |
| 194.68 |
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| Qes | 0.424 |
| 0.521 |
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| Re (Ω) | 7.2 |
| 7.2 |
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| Z (Ω) | 8 |
| 8 |
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| BL (Tm) | 28.41 |
| 31.76 |
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| Rms Power (watts) | 1,200 |
| 1,600 |
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| Qts | 0.4 |
| 0.482 |
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| NO (%) | 1.562 |
| 1.306 |
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| 1w/1m SPL (dB) | 93.96 |
| 93.18 |
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| 2.8V SPL (dB) | 94.54 |
| 93.31 |
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| Voice Coil Diameter (in) | 3” |
| 4” |
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| Impedance (Ω) | DVC 4Ω |
| DVC 4Ω |
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| 0.27 |
| 0.43 |
| |
| Overall Diameter (in.) | 15.5” |
| 18.25” |
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| Overall Height (in.) | 7.25” |
| 9.625” |
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| Cutout Diameter (in.) | 14.125” |
| 16.75” |
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| Mounting Depth (in.) | 6.75” |
| 8.875” |
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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
Enclosure Recommendations
PC.15DS High Tuned Ported | PC.15DS Low Tuned Ported | ||||||||
Vol. | Dimensions | Port | Freq. | Vol. | Dimensions | Port | Freq. | ||
(ft.3) | (H x L x D) | (dia. x L) | (Hz) | (Hz) | (ft.3) | (H x L x D) | (dia. X L) | (Hz) | (Hz) |
3.50 | 18x23.75x18 | (4) 4”x10” | 56.3 | 48.9 | 3.50 | 18x23.75x18 | (2) 4”x10” | 40.8 | 40.1 |
4.00 | 18x27x18 | (4) 4”x10” | 52 | 45.4 | 4.00 | 18x27x18 | (2) 4”x10” | 33.1 | 34.1 |
4.50 | 18x30.25x18 | (4) 4”x10” | 48.5 | 42.7 | 4.50 | 18x30.25x18 | (2) 4”x10” | 28.4 | 31.2 |
PC.18DS High Tuned Ported | PC.18DS Low Tuned Ported | |||||||||
Vol. | Dimensions |
| Port | Freq. | Vol. | Dimensions | Port | Freq. | ||
(ft.3) | (H x L x D) | (dia. X L) | (Hz) | (Hz) | (ft.3) | (H x L x D) | (dia. X L) | (Hz) | (Hz) | |
4.00 | 20”x21.75”x20” | (5) | 4”x15” | 53.2 | 47.3 | 4.00 | 20”x21.75”x20” | (3) 4”x15” | 40.4 | 42.2 |
5.00 | 20”x27”x20” | (5) | 4”x15” | 46 | 41.2 | 5.00 | 20”x27”x20” | (3) 4”x15” | 35.3 | 37.8 |
6 00 | 20”x32”x20” | (5) | 4”x15” | 41.3 | 37.3 | 6.00 | 20”x32”x20” | (3) 4”x15” | 31.8 | 35.2 |
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