Precision Power PowerClass PC10 C2, PowerClass PC12 C2, PowerClass PC15 C2, PowerClass PC8 C2 Owner's Manual
Page 1
POWER
CLASS
TM
C2
OWNERS MANUAL
CONTENTS
(click a topic to view)
CONGRATULATIONS PC12 C2 RESPONSE CURVES
INTRODUCTION PC15 C2 DIMENSIONS
PC8 C2 SPECIFICATIONS PC15 C2 RESPONSE CURVES
PC10 C2 SPECIFICATIONS SEALED ENCLOSURE
PC12 C2 SPECIFICATIONS SEALED ENCLOSURE (continued)
PC15 C2 SPECIFICATIONS PORTED ENCLOSURE
PC8 C2 DIMENSIONS PORTED ENCLOSURE (continued)
PC8 C2 RESPONSE CURVES BANDPASS ENCLOSURE
PC10 C2 DIMENSIONS BANDPASS ENCLOSURE (continued)
PC10 C2 RESPONSE CURVES ADDITIONAL INFORMATION
PC12 C2 DIMENSIONS WARRANTY
Page 2
Caution!
The extended use of a high powered audio system may
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.
Congratulations and thank you.....
for choosing C2 audio epuipment. We are proud to put the
PrecisionPo wer
name on these outstanding audio products. Like the
POWERCLASS
TM
lineup, you can count on the C2 line to deliver
Absolutely State of the Art
TM
performance and value. This
PrecisionPower
product reflects our
commitment to offer you unparalleled versatility and listening enjoyment.
Service
Do not attempt to service
PrecisionPower
products yourself.
Performing exploratory surgery on your audio equipment yourself
will void the warranty. Many parts of your C2 gear are custom built
to our specifications. parts are not made available to anyone
else nor are they for sale. Our goal is to make sure that your
PrecisionPower
product will always sound as good as the day it
was purchased. Contact your authorized
PrecisionPower
dealer
about obtaining any warranty service through
PrecisionPower
.
(See Warranty insde back cover)
FOR YOUR RECORDS:
Model
Serial Number
Purchase Date
BACK T O CONTENTS
Page 3
1
INTRODUCTION
Your new
PowerClass
C2
subwoofer is part of an exciting line of
loudspeakers from
PrecisionPo wer
. The
Po werClass
subwoofers reflect our commitment to
“Absolutely State of the Art”
performance and flawless sonic quality.
Included in this manual are a number of sample enclosure drawings.
They are by no means the only enclosures to use, but rather a starting
point in the right direction. To determine the correct enclosure for your
needs many factors need to be addressed (amount of power , vehicle,
placement, crossover, etc.) Therefore, as always,
PrecisionPower
recommends that your subwoofer be installed by an Authorized
PowerClass
Dealer.
1. Progressive Butyl Rubber Surround 2. Stepped PolyCarbon Cone
3. Butyl Rubber Flange Gasket 4. Gold Plated 12ga. Binding Post Terminals
5. Deep Draw Steel Basket 6. High Current Silver Plated Tinsel Leads
7. Flat Spider 8. Spider Clamp
9. TIL Voice Coil Former 10. Long Wind 4 Layer Voice Coil
11. 10mm Frontplate 12. Integrated Backplate / Extended Pole
13. Protective Magnet Cover
C2 StructureC2 Structure
C2 StructureC2 Structure
C2 Structure
BACK T O CONTENTS
Page 4
2
POWER CLASS
PC8 C2
Subwoofer
PC8 C2
Enclosure Recommendations
SPL 1: 1.31cu.ft. Bandpass F3: 49Hz Fo: 60Hz
.61 Sealed/.7 Ported, 3"Dia x 5.5"L Port
SPL 2: .75 cu.ft. Ported F3: 40Hz Fo: 43Hz
3"Dia x 11"L Port
General Use 1: .75 cu.ft. Ported F3: 40Hz Fo: 43Hz
3"Dia x 11"L Port
General Use 2: .5 cu.ft. Ported F3: 46Hz Fo: 47Hz
2"Dia x 6"L Port
Audiophile 1: .75 cu.ft. Sealed F3: 48Hz
1) 4"Dia x 7.75"L Port
Audiophile 2: .5 cu.ft. Sealed F3: 49Hz
See page 6 for examples of dimensions for these enclosures.
PC8 C2
Specifications
Normal Power Handling 150 W rms
Voice Coil Diameter 2” / 50.8mm
Voice Coil Type / Former 4 Layer/TIL
Resonant Frequency 32 Hz
Qts-Total Damping 0.49
Qms- Mechanical Damping 9.20
Qes- Electromagnetic Damping 0.518
Vas- Equivalent Compliance Volume .80cuft / 22.78 liter
DC Resistance of V.C. 3.6W / 6.8W
Sensitivity (SPL at 1W) 87.57 dB
Xmax (Linear Excursion) ±.343" / 8.72 mm
Peak to Peak Excursion ±.629" / 16.00 mm
Mms- Total Mass 2.34oz / 66.35 g
Sd- Piston Area .230sqft / 0.0214 sqm
Bl- Magnet Product 9.26 Tm
Cone Material Carbon Poly
Basket Material Stamped Steel
Net Weight 5.80 lbs / 2.63kg
Dimensions 8.09” dia. X 4.375” H
205mm dia. X 110mm H
Mounting Hole Diameter 7.375” /185mm
Mounting Depth 4.00" /102mm
Displacement .04 cuft / 1.13 liter
BACK T O CONTENTS
Page 5
3
POWER CLASS
PC10 C2
Subwoofer
PC10 C2
Specifications
Normal Power Handling 300W rms
Voice Coil Diameter 2” / 50.8mm
Voice Coil Type / Former 4 Layer/TIL
Resonant Frequency 25.24Hz
Qts-Total Damping 0.38
Qms- Mechanical Damping 6.95
Qes- Electromagnetic Damping 0.40
Vas- Equivalent Compliance Volume 2.4 cuft / 68.14 liter
DC Resistance of V.C. 3.6W / 6.8W
Sensitivity (SPL at 1W) 89.64 dB
Xmax (Linear Excursion) ±.393" / 9.97mm
Peak to Peak Excursion ±.679" / 17.25mm
Mms- Total Mass 3.37oz / 95.73g
Sd- Piston Area .372sqft / 0.0346 sqm
Bl- Magnet Product 11.74 Tm
Cone Material Carbon Poly
Basket Material Stamped Steel
Net Weight 8.68 lbs / 3.94 kg
Dimensions 10.07” dia. X 5.185” H
(256mm dia. X 132mm H)
Mounting Hole Diameter 9.25” / 232mm dia.
Mounting Depth 4.80" / 122mm
Displacement .065 cuft / 1.84 liter
PC10 C2
Enclosure Recommendations
SPL 1: 1.0 cu.ft. Bandpass F3: 50Hz Fo: 75Hz
.36 Sealed/.62 Ported, 4"Dia x 6.5"L Port
SPL 2: .75 cu.ft. Ported F3: 43Hz Fo: 47Hz
3"Dia x 8.9"L Port
General Use 1: 1.0 cu.ft. Ported F3: 38Hz Fo:42Hz
3"Dia x 8.25"L Port
General Use 2: .75 cu.ft. Ported F3: 43Hz Fo: 47Hz
3"Dia x 8.9"L Port
Audiophile 1: 1.0 cu.ft. Ported F3: 38Hz Fo:42Hz
3"Dia x 8.25"L Port
Audiophile 2: .75 cu.ft. Sealed F3: 51Hz
See page 8 for examples of dimensions for these enclosures.
BACK T O CONTENTS
Page 6
4
POWER CLASS
PC12 C2
Subwoofer
PC12 C2
Specifications
Normal Power Handling 300W rms
Voice Coil Diameter 2” / 50.8mm
Voice Coil Type / Former 4 Layer/TIL
Resonant Frequency 21.64Hz
Qts-Total Damping 0.41
Qms- Mechanical Damping 5.41
Qes- Electromagnetic Damping 0.44
Vas- Equivalent Compliance Volume 5.31cuft / 150.37 liter
DC Resistance of V.C. 3.6W / 6.8W
Sensitivity (SPL at 1W) 90.67 dB
Xmax (Linear Excursion) ±.393" / 9.97mm
Peak to Peak Excursion ±.67" / 17.00mm
Mms- Total Mass 4.46oz / 126.59g
Sd- Piston Area .555sqft / 0.0511 sqm
Bl- Magnet Product 11.87 Tm
Cone Material Carbon Poly
Basket Material Stamped Steel
Net Weight 8.92lbs / 4.04kg
Dimensions 12.0” dia. X 5.78” H
305mm dia. X 147mm H
Mounting Hole Diameter 11.00” / 280mm
Mounting Depth 5.5" / 140mm
Displacement .075 cuft / 2.12 liter
PC12 C2
Enclosure Recommendations
SPL 1: 2.3 cu.ft. Bandpass F3: 53Hz Fo: 70Hz
.6 Sealed/1.7 Ported, 2) 4"Dia x 4.5"L Ports
SPL 2: 1.25 cu.ft. Ported F3: 42Hz Fo: 45Hz
4"Dia x 10.0"L Port
General Use 1: 1.75 cu.ft. Ported F3: 37Hz Fo: 40Hz
4"Dia x 8.5"L Port
General Use 2: 1.9 cu.ft. Bandpass F3: 45Hz Fo: 68Hz
.7 Sealed/1.2 Ported, 2) 4"Dia x 8.5"L Ports
Audiophile 1: 1.25 cu.ft. Sealed F3: 44Hz
Audiophile 2: 2.5 cu.ft. Ported F3: 31Hz Fo: 35Hz
4"Dia x 7.5"L Port
See page 10 for examples of dimensions for these enclosures.
BACK T O CONTENTS
Page 7
5
POWER CLASS
PC15 C2
Subwoofer
PC15 C2
Specifications
Normal Power Handling 300W rms
Voice Coil Diameter 2” / 50.8mm
Voice Coil Type / Former 4 Layer/TIL
Resonant Frequency 31Hz
Qts-Total Damping 0.34
Qms- Mechanical Damping 1.21
Qes- Electromagnetic Damping 0.47
Vas- Equivalent Compliance Volume 3.83cuft / 108.43 liter
DC Resistance of V.C. 3.6W / 6.8W
Sensitivity (SPL at 1W) 90.51 dB
Xmax (Linear Excursion) ±.383" / 9.72mm
Peak to Peak Excursion ±.679" / 17.25mm
Mms- Total Mass 5.87oz / 166.15g
Sd- Piston Area .920sqft / 0.0855 sqm
Bl- Magnet Product 12.91 Tm
Cone Material Carbon Poly
Basket Material Stamped Steel
Net Weight 11.32 lbs / 5.13kg
Dimensions 15.16” dia. X 7.20” H
(385mm dia. X 183mm H)
Mounting Hole Diameter 13.75” / 347mm dia.
Mounting Depth 6.85" / 173mm
Displacement .09 cuft / 2.56liter
PC15 C2
Enclosure Recommendations
SPL 1: 5.0 cu.ft. Bandpass F3: 47Hz Fo: 65
1.5 Sealed/3.5 Ported, 2) 6"Dia x 5.0"L Ports
SPL 2: 2.0 cu.ft. Ported F3: 44Hz Fo: 37Hz
4"Dia x 9.0"L Port
General Use 1: 3.5 cu.ft. Ported F3: 35Hz Fo: 35Hz
4"Dia x 4.5"L Port
General Use 2: 3.5 cu.ft. Bandpass F3: 40Hz Fo: 65
1.5 Sealed/2.0 Ported, 6"Dia x 4.0"L Ports
Audiophile 1: 2.5 cu.ft. Sealed F3: 41Hz
Audiophile 2: 2.0 cu.ft. Sealed F3: 44Hz
See page 10 for examples of dimensions for these enclosures.
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Page 8
6
POWER CLASS
PC8 C2
Subwoofer
PC8 C2
Sealed Enclosures
Net Volume Internal Dimensions (see page 15)
.33 cubic feet 14.25”L x 8.5”W x 5.25”D
.5 cubic feet 16”L x 9.75”W x 6”D
.6 cubic feet 16.75”L x 10.25”W x 6.5”D
PC8 C2
Bandpass Enclosures
Net Volume Internal Dimensions (see page 19)
Low Gain .6 cu.ft. Sealed 10"L x 11.5"W x 10.125"C1
33Hz to 81Hz .35 cu.ft. Ported 10"L x 11.5"W x 5.375"C2
Port Tuned to 55 Hz 3"Dia x 15.0" Long Port*
Medium Gain .35 cu.ft. Sealed 12"L x 8.5"W x 6.5"C1
43Hz to 94Hz .34 cu.ft. Ported 12"L x 8.5"W x 6"C2
Port Tuned to 65Hz 3"Dia x 10.75" Long Port*
High Gain .61 cu.ft. Sealed 17"L x 10.25"W x 6.5"C1
49Hz to 74Hz .7 cu.ft. Ported 17"L x 10.25"W x 7.125"C2
Port Tuned to 60Hz 3"Dia x 5.0" Long Port
* Port must run through the sealed chamber in this enclosure.
PC8 C2
Ported Enclosures
Net Volume Internal Dimensions (see page 17)
.33 cubic feet 14”L x 9”W x 5.375”D
Port Tuned to 50Hz 2"Dia x 8.5" Long Port
.5 cubic feet 14”L x 9”W x 5.625”D
Port Tuned to 47Hz 2"Dia x 6.0" Long Port
.75 cubic feet 19”L x 11.75”W x 7.25”D
Port Tuned to 42Hz 3"Dia x 11.0" Long Port
Outer Diameter 8.09” / 205mm
Mounting Hole Diameter 7.375” /185mm
Mounting Depth (from bottom of top ring) 4.00" /102mm
Speaker Displacement .04 cuft / 1.13 liter
Basic Working Dimensions for the
PC8 C2
BACK T O CONTENTS
Page 9
POWER CLASS
PC8 C2
Subwoofer
7
PC8 C2
Sealed RESPONSE CURVE
*
PC8 C2
Bandpass RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
PC8 C2
Ported RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
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Page 10
8
POWERCLASS
PC10 C2
Subwoofer
PC10 C2
Sealed Enclosures
Net Volume Internal Dimensions (see page 15)
.5 cubic feet 16”L x 10”W x 6.125”D
.75 cubic feet 18”L x 11.25”W x 7.0”D
1.0 cubic feet 20”L x 12.5”W x 7.375”D
PC10 C2
Bandpass Enclosures
Net Volume Internal Dimensions (see page 19)
Low Gain .84 cu.ft. Sealed 18.75"L x 11.5"W x 7.25"C1
33Hz to 85Hz .63 cu.ft. Ported 18.75"L x 11.5"W x 5.25"C2
Port Tuned to 53Hz 3"Dia x 8.25" Long Port
Medium Gain .60 cu.ft. Sealed 17.0"L x 10.5"W x 6.5"C1
39Hz to 94Hz .60 cu.ft. Ported 17.0"L x 10.5"W x 6.375"C2
Port Tuned to 60Hz 3"Dia x 6.25" Long Port
High Gain .36 cu.ft. Sealed 12.0"L x 12.0"W x 5.125"C1
50Hz to 101Hz .62 cu.ft. Ported 12.0"L x 12.0"W x 8.125"C2
Port Tuned to 71Hz 4"Dia x 7.5" Long Port
PC10 C2
Ported Enclosures
Net Volume Internal Dimensions (see page 17)
.75 cubic feet 18.5”L x 11.5”W x 7.0”D
Port Tuned to 47Hz 3"Dia x 9.0" Long Port
1.0 cubic feet 20”L x 12”W x8”D
Port Tuned to 42Hz 3"Dia x 8.25" Long Port
1.25 cubic feet 21.75”L x 13”W x 8.25”D
Port Tuned to 38Hz 3"Dia x 8.0" Long Port
Outer Diameter 10.07” / 256mm
Mounting Hole Diameter 9.25” / 232mm dia.
Mounting Depth (from bottom of top ring) 4.80" / 122mm
Speaker Displacement .065 cuft / 1.84 liter
Basic Working Dimensions for the
PC10 C2
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Page 11
9
POWER CLASS PC10 C2
Subwoofer
PC10 C2
Sealed RESPONSE CURVE
*
PC10 C2
Bandpass RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
PC10 C2
Ported RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
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Page 12
10
POWER CLASS
PC12 C2
Subwoofer
PC12 C2
Sealed Enclosures
Net Volume Internal Dimensions (see page 15)
1.0 cubic feet 20”L x 12”W x 7.75”D
1.25 cubic feet 21.25”L x 13.25”W x 8.125”D
1.5 cubic feet 22.5”L x 14”W x 8.625”D
PC12 C2
Bandpass Enclosures
Net Volume Internal Dimensions (see page 19)
Low Gain .94cu.ft. Sealed 15"L x 15"W x 7.75"C1
32Hz to 103Hz .8 cu.ft. Ported 15"L x 15"W x 6.625"C2
Port Tuned to 60Hz 4"Dia x 8.375" Long Port
Medium Gain .7 cu.ft. Sealed 15"L x 15"W x 6.0"C1
45Hz to 98Hz 1.2 cu.ft. Ported 15"L x 15"W x 10.125"C2
Port Tuned to 68Hz 2) 4"Dia x 8.5" Long Ports
High Gain .6 cu.ft. Sealed 15"L x 15"W x 5.125"C1
53Hz to 95 Hz 1.7 cu.ft. Ported 15"L x 15"W x 13.5"C2
Port Tuned to 70Hz 2) 4"Dia x 4.5" Long Ports
PC12 C2
Ported Enclosures
Net Volume Internal Dimensions (see page 17)
1.25 cubic feet 22.75”L x 14”W x 7.5”D
Port Tuned to 45Hz 4"Dia x 10.0" Long Port
1.75 cubic feet 24.75”L x 15”W x 8.75”D
Port Tuned to 40Hz 4"Dia x 8.5" Long Port
2.50 cubic feet 27.25”L x 17”W x 9.75”D
Port Tuned to 35Hz 4"Dia x 7.5" Long Port
Outer Diameter 12.0” / 305mm
Mounting Hole Diameter 11.00” / 280mm
Mounting Depth (from bottom of top ring) 5.5" / 140mm
Speaker Displacement .075 cuft / 2.12 liter
Basic Working Dimensions for the
PC12 C2
BACK T O CONTENTS
Page 13
11
POWER CLASS
PC12 C2
Subwoofer
PC12 C2
Sealed RESPONSE CURVE
*
PC12 C2
Bandpass RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
PC12 C2
Ported RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
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Page 14
12
POWER CLASS PC15 C2
Subwoofer
PC15 C2
Sealed Enclosures
Net Volume Internal Dimensions (see page 15)
1.5 cubic feet 22.5”L x 14”W x 8.75”D
2.0 cubic feet 25”L x 15.25”W x 9.5”D
2.5 cubic feet 26”L x 16.5”W x 10.5”D
PC15 C2
Bandpass Enclosures
Net Volume Internal Dimensions (see page 19)
Low Gain 2.0 cu.ft. Sealed 16.5"L x 16.5"W x 13.25"C1
31Hz to 108Hz 1.5 cu.ft. Ported 16.5"L x 16.5"W x 10"C2
Port Tuned to 60Hz 2) 3"Dia x 10.25" Long Ports
Medium Gain 1.5 cu.ft. Sealed 16.5"L x 16.5"W x 10"C1
40Hz to 108Hz 2.0 cu.ft. Ported 16.5"L x 16.5"W x 13.5"C2
Port Tuned to 65Hz 2) 4"Dia x 8.5" Long Ports
High Gain 1.5 cu.ft. Sealed 18"L x 16"W x 9.5"C1
47Hz to 92Hz 3.5 cu.ft. Ported 18"L x 16"W x 21.125"C2
Port Tuned to 65Hz 1) 6"Dia x 1.75" Long Port
PC15 C2
Ported Enclosures
Net Volume Internal Dimensions (see page 17)
2.0 cubic feet 25.75”L x 16”W x 9”D
Port Tuned to 37Hz 4"Dia x 9.0" Long Port
3.5 cubic feet 30”L x 18.5”W x 11.25”D
Port Tuned to 35Hz 4"Dia x 4.5" Long Port
5.0 cubic feet 33”L x 21”W x 12.75”D
Port Tuned to 30Hz 4"Dia x 4" Long Port
Outer Diameter 15.157” / 385mm
Mounting Hole Diameter 13.75” / 350mm
Mounting Depth (from bottom of top ring) 6.85" / 174mm
Speaker Displacement .09 cuft / 2.67 liter
Basic Working Dimensions for the
PC15 C2
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Page 15
13
POWER CLASS
PC15 C2
Subwoofer
PC15 C2
Sealed RESPONSE CURVE
*
PC15 C2
Bandpass RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
PC15 C2
Ported RESPONSE CURVE
*
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
*ACTUAL IN-CAR RESPONSE CURVE WILL VARY BASED ON CAR TYPE, WOOFER LOADING, AND ENCLOSURE DESIGN.
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Page 16
14
SEALED ENCLOSURE
Building a Sealed Enclosure:
1. Build a sealed enclosure with internal L x W x D as specified for
your woofer (See recommended enclosures for your woofer). Use
3/4” thick MDF for the enclosure. Be sure to use wood glue and
silicone to ensure your enclosure is sealed properly , as air leaks
will affect the performance of your subwoofer .
2. Using the supplied template, trace the appropriate circle and
mounting hole pattern for your PowerClass C2 subwoofer on the
baffle board. (See diagram)
3. Cut the speaker hole from the baffle board with a router,
using a guide or template whenever possible. Use a jig saw only
if a router is not available.
4. Place the woofer in the opening which you have cut in the
baffle to check the fit.
5. Run an appropriate length of wire into the enclosure, leaving
enough length to comfortably install the wires to the terminals on
the woofer before placing the speaker into its mounting hole. Use
a terminal cup whenever possible.
6. Vacuum out any wood shavings and dust from the inside of the
enclosure. (Failure to do so may void your warranty.) Loosely
fill the box half way with polyester fiberfill.
7. Connect the wires to the woofer observing the proper polarity,
positive and negative terminals. Strip away the insulation of
the wire about 1/4" and install the wires into the terminal posts.
8. Install the woofer into the enclosure using #8 or larger wood
screws (not supplied)
9. Once the enclosure is complete, it is time to connect the speaker
wire coming from the subwoofer enclosure to your amplifier.
Check that you use the proper wire for consistent polarity,
positive and negative. (Refer to your amplifier owner’s manual.)
10. Finally, sit back and enjoy the incredible enhancement
your new PowerClass C2 subwoofer brings to your audio
system.
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Page 17
15
SEALED ENCLOSURE
Internal dimensions should be calculated to determine the correct box
volume. Be sure to allow for speaker displacement and extra bracing (if
used).
Sealed Speaker Diagram
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Page 18
16
PORTED ENCLOSURE
Building a Ported Enclosure:
1. Build a ported enclosure with internal dimensions of LxWxD as
specified for your woofer (See recommended enclosures for
your woofer). Use 3/4” thick MDF for the enclosure. Be sure to
use wood glue and silicone at all joints to ensure your enclosure
is sealed properly. Air leaks will affect the performance of your
subwoofer, even in a ported enclosure.
2. Using the supplied template, trace the appropriate circle and
mounting hole pattern for your PowerClass C2 subwoofer on the
baffle board. Be sure to offset the woofer to one side to leave
room for the port in the baffle. (See Diagram)
3. Cut the speaker and port holes from the baffle board with a
router, using a guide or template whenever possible. Use a jig
saw only if a router is not available.
4. Locate the port material that you are going to use, and cut to
length. When installing the port, make sure you have a
clearance of at least one port diameter from the end of the port
to the inside wall of the box. Round over the inside edges of
both ends of the port with a router or file to minimize port noise.
5. Place the woofer into the hole which you have cut in the baffle to
check the fit.
6. Run an appropriate length of wire into the box, leaving enough
to comfortably install the wires to the woofer terminals before
placing the speaker into its mounting hole. Use a terminal cup
whenever possible.
7. Vacuum out any wood shavings and dust from the inside of the
enclosure. (Failure to do so may void your warranty.) Line the
enclosure with a polyester fiberfill blanket or fiberglass insulation
about 1” thick.
8. Connect the wires to the woofer observing the proper polarity,
positive and negative terminals. Strip away the insulation of
the wire about a 1/4" and install the wires into the terminal posts
9. Once the box is complete, it's time to connect the speaker wire
coming from the subwoofer enclosure to your amplifier. Check
that you use the proper wire for consistent polarity, positive and
negative. (Refer to your amplifier owner’s manual.)
10. Finally, sit back and enjoy the incredible enhancement your new
PowerClass C2 subwoofer brings to your audio system.
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Page 19
17
Ported Enclosure Diagram
PORTED ENCLOSURE
Internal dimensions should be calculated to determine the correct enclosure
volume. Be sure to allow for speaker displacement, extra bracing (if used),
and port displacement (only the length of the port that is INSIDE the
enclosure). It may be necessary to angle the port to fit your design. To
calculate the displacement of the port: (Outside) Radius2 x 3.14 x Length of
the port that is inside the enclosure.
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Page 20
18
BANDPASS ENCLOSURE
Building a Bandpass Enclosure:
1. Using 3/4" thick MDF, cut out all the panels to build a divided
enclosure with internal dimensions of LxWxC1 and C2 as specified for
your woofer (See recommended enclosures for your woofer).
2. Using the supplied template, trace the appropriate circle and
mounting hole pattern for your PowerClass C2 subwoofer on the baffle
board.
3. Cut the speaker and port holes from the baffle board with a router,
using a guide or template whenever possible. Use a jig saw only if a
router is not available.
4. Locate the port material which you are going to use, and cut it to the
appropriate length. When installing the port, make sure you have a
distance of at least one port diameter from the end of the port to the
inside wall of the enclosure. Round over the inside edges of both ends
of the port with a router or file to minimize port noise.
5. Assemble the enclosure, using wood glue and silicone at all joints to
ensure your that enclosure is sealed properly. Air leaks will affect the
performance of your subwoofer even in ported enclosures. Leave one
panel removable for access to the woofer.
6. Place the woofer into the hole which you have cut in the baffle to
check the fit.
7. Run an appropriate length of wire into the enclosure, leaving enough
to comfortably install the wires to the terminals on the woofer before
placing the speaker into its mounting hole. Use a terminal cup
whenever possible.
8. Vacuum out any wood shavings and dust from the inside of the
enclosure. (Failure to do so may void your warranty.) Then, line the
ported side of the enclosure with a polyester fiberfill blanket or
fiberglass insulation about 1” thick, and loosely fill the sealed side of
the enclosure half way with polyester fiberfill.
9. Connect the wires to the woofer observing the proper polarity,
positive and negative terminals. Strip away the insulation of
the wire about a 1/4" and install the wires into the terminal posts.
10. Install the woofer into the enclosure using #8 or larger wood screws.
11. Attach the removable cover to the enclosure, ensuring that there are
no air leaks.
12. Once the box is complete, it's time to connect the speaker wire coming
from the subwoofer enclosure to your amplifier. Check that you use the
proper wire for consistent polarity, positive and negative.
(Refer to amplifier owner’s manual.)
13. Finally, sit back and enjoy the incredible enhancement your new
PowerClass C2 subwoofer brings to your audio system.
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Page 21
19
Bandpass Enclosure Diagram
BANDPASS ENCLOSURE
Internal dimensions should be calculated to determine the correct enclosure
volume. Be sure to allow for speaker displacement, extra bracing (if used),
and port displacement (only the length of the port that is INSIDE the
enclosure). If the port is very long, it may be necessary to run the port
through the sealed chamber into the ported chamber. To calculate the
displacement of the port: (Outside) Radius2 x 3.14 x Length of the port that
is inside the enclosure.
P
O
W
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R
CL
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S
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Page 22
Additional Information
NOTE: Abuse and/or Installation Error:
PrecisionPower
defines abuse as, but not limited
to, burnt voice coils (blackened, no continuity, melted adhesives, coil separated from
the former, etc.), punctured or damaged surrounds, broken speaker terminals, non-
PrecisionPower
modifications, bent, chipped, or broken frames, ripped spiders, or
damaged back plates. Speakers submitted with any of the above will be considered out
of warranty.
20
Our dealers are trained to achieve the highest level of performance from
our products. If you are installing your new subwoofers on your own and
need assistance, please call your local
PowerClass
dealer or
PrecisionPower
Technical Service Department at
1-800-62-PO WER.
Thanks again for choosing
PowerClass
.
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Page 23
WARRANTY
Three-Year Limited U.S.A. Warranty
This warranty gives you specific legal rights, and you may also have other rights which vary from
state to state. PrecisionPower warrants its products to be free from defects in materials and
workmanship under normal use and service for a period of three (3) years from the date of
original purchase when the unit is installed by an Authorized Dealer. Non-Authorized Dealer
installed products carry a one (1) year parts and ninety (90) days labor limited warranty. The
extent and conditions of Limited Warranty are as follows:
1. Authorized Dealer Installed Products: PrecisionPower will either repair or replace at no charge,
to the original purchaser , any unit which PrecisionPower’s examination discloses to be defective
and under warranty, provided the defect occurs within three (3) years from the date of original
purchase when the unit is installed by an Authorized Dealer and the product is returned immediately to PrecisionPower. This warranty is not transferable.
2. Non-Authorized Dealer Installed Products: PrecisionPower will either repair or replace at no
charge, to the original purchaser, any unit which PrecisionPower’s examination discloses to be
defective and under warranty , provided the defect occurs within ninety (90) days from the date of
purchase and the product is returned immediately to PrecisionPower. Warranty claims beyond
ninety (90) days for Non-Authorized Dealer Installed Products will be for parts only and will
extend for one (1) year from the date of purchase. This warranty is not transferable.
3. The date of purchase and proof of Authorized Dealer Installation of a PrecisionPower product
must be established by an original sales receipt which must accompany the article being returned for warranty work.
4. This warranty shall NOT apply to any PrecisionPower product found to have the original factory serial number removed or defaced. All products received (by PrecisionPower) for in warranty or out of warranty repair, with their original serial numbers removed or defaced, will NOT be
repaired and will be returned to sender, freight collect. Refer to original packaging for the serial
number of your component speakers.
5. The provisions of this warranty shall not apply to any PrecisionPower product used for a
purpose for which it is not designed, which has been repaired or altered in any way , or which has
been connected, installed, or adjusted other than in accordance with the instructions furnished in
PrecisionPower’s owner’s manual. Nor shall this warranty apply to any part which has been
subject to misuse, neglect, or accident.
6. PrecisionPower does not authorize any other persons to assume any other liability in connection with its products. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY MADE BY
PRECISIONPOWER APPLICABLE T O ITS PRODUCTS. ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE APPLICABLE TO
PRECISIONPOWER PRODUCTS IS LIMITED IN DURATION TO THE DURATION OF THIS
LIMITED WARRANTY. PRECISIONPOWER SHALL NOT BE LIABLE FOR THE INCIDENTAL,
CONSEQUENTIAL, OR COMMERCIAL DAMAGES RESUL TING FROM THE BREACH OF THIS
WRITTEN WARRANTY. Some states or provinces do not allow the exclusion or limitation of
incidental or consequential damages or limitations on how long an implied warranty lasts; so the
above limitations or exclusions may not apply to you.
7. Your product will be serviced on an in-warranty basis within the warranty period for the correction of warranted defects. If improper operation of your PrecisionPower product should occur,
contact your Authorized Dealer for assistance with the return and factory repair of your PrecisionPower
product. If an Authorized Dealer is not available, return the unit including your name, telephone
number, return address, a copy of your sales receipt, and a description of the problem to:
PrecisionPower,Inc.
Service Department
4829 S. 38th Street
Phoenix, AZ 85040-2964
TO RETURN PRECISIONPOWER PRODUCTS OUT OF W ARRANTY: Return the unit, postage
prepaid, in the original protective carton. Please include a description of the problem and, if
desired, a request for an estimate of repair costs. Unless a request for an estimate is included,
the unit will be repaired as necessary. Please contact PrecisionPower Customer Service at 1800-62-POWER for questions concerning out of warranty repair charges. Repaired unit will be
returned with an itemized statement, C.O.D.
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