Precision Power PCX 102, PCX 104, PCX 122, PCX 124 Owners Manual

PowerClass SubWoofers

PCX 102 PCX 104 PCX 122 PCX 124

TABLE OF CONTENTS

Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Wiring Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Enclosure Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

CONGRATULATIONS

Thank you for choosing

PrecisionPower

woofers. Designed and engineered in the USA, this product combines innovativ e technology 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 service and listening enjoyment.

Included in this manual are a number of different enclosure suggestions.These are by no means the only enclosures to use, b ut 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

CAUTION

Extended use of a high powered audio system ma y result in hearing loss or damage. While

PrecisionPower

systems are capable of “Concert Level” volumes with incredible accuracy, they are also designed for you to enjoy at more reasonable levels all of the sonic subtleties created by musicians. Please observe all local sound ordinances.

SPECIFICATIONS

Note: Specifications subject to change without notice.

Directed Part Number PCX 102 PCX 104 PCX 122 PCX 124

Model Number 28102 28107 28112 28117

Thiele/Small Parameters

Fs (free-air resonance, Hz) 36.7 39.77 22.07 24.2 Vas (equivalent compliance, cu. ft.) 0.75 0.64 4.38 3.96 Vas (equivalent compliance, liters) 21.09 17.96 123.96 112.15 Qms (Q, mechanical) 3.56 3.46 3.58 2.98 Qes (Q, electrical) 0.96 1.03 0.62 0.65 Qts (total driver Q) 0.75 0.79 0.53 0.54 Re (DC resistance, ohms) 3.7 7 3.7 7 Z (nominal impedance, ohms) 2 x 2 2 x 4 2 x 2 2 x 4 Le (inductance, mh) 2.12 3.23 2.13 3.24 Efficiency (1W @ 1M, dB) 82.26 82.3 85.22 85.78 Xmax (one way linear excursion, in.) 0.63 0.63 0.63 0.63 Xmax (one way linear excursion, mm) 16.1 16.1 16.1 16.1 Pe (continuous power handling, watts) 300 300 300 300 Peak power handling (music, watts) 600 600 600 600 Mms (total moving mass, grams) 129 129 152 140 Cms (mechanical compliance, mm/N) 0.145 0.124 0.342 0.309 Bl (motor strength, Tesla-M) 10.7 14.82 11.22 15.13 Sd (

effective radiating area, sq. cm.)

320.5 320.5 506.71 506.71 Sd (effective radiating area, sq. in.) 49.692 49.692 78.54 78.54 Frequency range (Hz) 36.7-250 39.8-250 22.1-250 24.2-250 Energy Bandwidth Product (EBP) 38 39 36 37

Driver Physical Dimension

Speaker Outer Diameter (inches) 10.118 10.118 12.992 12.992 Speaker Outer Diameter (mm) 257 257 330 330 Mounting hole diameter (inches) 9.212 9.212 11.1 11.1 Mounting hole diameter (mm) 234 234 282 282 Mounting depth (inches) 5.866 5.866 6.18 6.18 Mounting depth (mm) 149 149 157 157 Magnet Weight (oz) 65 65 70 70 Basket diameter (inches) 10.118 10.118 12.992 12.992

SPECIFICATIONS (Continued)

FEATURES

1. Wrap around gasket to accom-

modate either front or rear mounting alternatives

8. 8mm steel vented T yoke back plate/pole piece

2. High density NBR foam surround 9. 1” flared vent

3. Glass fiber honey comb flat panel 10. Dual 4 ohm copper voice coil

4. Stamped steel basket 11. Kapton voice coil former

5. Push terminals (1 pair each side) 12. Progressive roll Conex spider

6. 8mm steel front plate 13. Vent holes in cone assembly for additional cooling

7. Double stack ceramic magnets

(65 oz. on 10” and 70 oz. on 12”)

14. Paper cone assembly to support and stabilize the flat panel

11 10

6 7 8

Recommended Enclosures

Typical sealed enclosure (cu. ft.) 0.6 0.6 1.25 1.25 SPL sealed enclosure (cu. ft.) 0.5 0.5 1 1 Typical vented enclosure (cu. ft.) 0.9 0.9 1.25 1.25 Port Tuning (Hz) 32 32 29 29 Port Diameter (inside, in.) 2.25 2.25 2.6 2.6 Port Length (in.) 10 10 12 12 Equivalent Square Por t (in.) 2 x 2 2 x 2 2.3 x 2.3 2.3 x 2.3

Enclosure Details

1. External dimensions calculated for 3/4" building material.

2. Includes speaker displacement.

3. Volumes given are net tuning volume.

4. Enclosures include a minimal amount of damping material. Use just enough material to line the inside of the enclosure.

WIRING CONFIGURATIONS

The following illustrations provide guidelines on properly connecting your

PrecisionPower

woofer to a

PrecisionPower

amplifier for maximum power and performance using common parallel, and series/parallel wiring configurations.

Parallel—One Speaker (dual 2 ohm voice coils)

One dual 2 ohm voice coil woofer with voice coils in parallel results in a 1 ohm load to the amplifier.

1. Connect the speaker in parallel by connecting the tw o positive (+) terminals together and the two negative (-) terminals together.

2. Wire the positive (+) terminals of the woofer to the positive (+) terminal on the amplifier. Wire the negative (-) terminals of the woofer to the negative (-) terminal on the amplifier.

Recommended Amplifier Power

1 woofer 200 to 600 watts 2 woofers 400 to 1200 watts 3 woofers 600 to 1800 watts 4 woofers 800 to 2400 watts

2 ohm

+ 12 hidden pages