SUBWOOFER
CONGRATULATIONS! You have chosen a superior product for reproducing
true high fidelity in the car. This precision component, when properly
installed, is capable of audiophile-quality performance. The EXC 8,10 and
12 woofers are well suited for sealed, vented, and sealed band-pass
enclosures. They also work well in infinite baffle installations at one-half the
power rating.
Should your woofer ever require service or replacement, recording the
information below for your own records will help protect your investment.
Model Number:
Serial Number:
Dealer's Name:
Date of Purchase:
Installation Shop:
Installation Date:
SUBWOOFERS
DESIGN FEATURES
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Installation Flexibility - The EXC woofers perform well in smaller-sized sealed, vented
and band-pass enclosures. Regardless of the application, the EXC woofers perform!
Heavy Cast Aluminum Frame provides extra rigidity and damping with Silver Powder
Coat Finish for durability and scuff resistance.
OWNER'S MANUAL AND
INSTALLATION GUIDE
Ultra-High power handling Voice Coil with Black Anodized Aluminum Former
increases power handling and performance. Aerospace grade adhesives and
materials insure longevity and high performance.
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High Excursion Design - The EXC woofer offers an Extra Long Voice Coil for extra
high output. New Ultra-Excursion Surround enables this.
Computer Numerically Controlled (CNC) machined magnet plates and pole piece
precisely focus the magnetic energy for optimum performance. High Emissivity
Coating for improved power handling and lower distortion.
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Vented Pole Piece for greater voice coil cooling.
Rubber Magnet Cover for added durability and exceptional appearance.
Custom-designed High Strength Spider controls the long travel cone assembly.
Gold Plated 8 Gauge Terminals ensure consistently outstanding connectivity for cable
hook up.
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Designed and Manufactured in the U.S.A.
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SELECTING AN ENCLOSURE
Sealed Band-pass Enclosure
BUILDING THE ENCLOSURE
Sealed band-pass enclosures enclose both sides of the woofer(s). An
airtight enclosure is built around the front and back of the woofer and
one chamber is ported to a specific frequency.
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Determine the dimensions of your enclosure.
Be certain the box you have designed will fit into the location you
have chosen. Sometimes making a cardboard box with the same
outside dimensions is helpful.
Pros
Cons
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Use 3/4 inch thick Medium Density Fiberboard (MDF) or High
Density Particleboard. It is preferable to cut the wood with a table
saw to ensure straight, even joints. If a table saw is not available,
a circular saw is acceptable.
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High power handling
within the operating
frequencies
Very high output
within the range of
the operating
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Low power handling
beyond the tuning
frequency
Poor to moderate
transient response
Poor low frequency
extension
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Use a "T' square to verify precise right angle gluing.
Use a high quality wood glue and air nails or wood screws to
assemble the enclosure. Elmer'sâ woodworker's glue and
Weldwoodâ work well. To guarantee an airtight box, seal each
inside joint with silicone sealant.
frequencies
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For Sealed Enclosures, stuff the chamber with 50-75% filling
(approximately 1.5 pounds per cubic foot) of fiberglass insulation
or Dacronâ .
CALCULATING NET INTERNAL ENCLOSURE VOLUMES
When constructing any type of enclosure, you must be aware that the
outside dimensions DO NOT represent the true (Net) volume inside.
Such things as woofers, ports, thickness of enclosure material, dividing
walls, and any internal bracing will reduce the total amount of the actual
air space available. The following worksheet has been designed to
provide you with the necessary steps to accurately calculate the absolute
(Net) internal volume of any given enclosure.
For Vented Enclosures, staple 1-inch thick fiberglass insulation or
Dacronâ to all walls of the enclosure except the baffle to which
the woofer is mounted.
Use the eight (8) wood screws or T-nuts and bolts to seal the
woofer in the enclosure. Progressively tighten each of the bolts or
screws to prevent warping the woofer frame.
Calculating Cylindrical Port Volume
1. Measure the outside diameter of the port and divide by 2 for the
radius.
2. Square the radius and multiply by 3.14 (pi) to arrive at outside port
area.
3. Multiply the area by the length of
the port inside the enclosure for the
port volume.
5
6
Infinite Baffle
Infinite Baffle
. Excellent performance for all types of music at moderate levels
. Excellent performance for all types of music at moderate levels
100
95
100
Sealed
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95
Sealed
.5 ft3 Good overall enclosure.
90
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.5 ft3 Good overall enclosure.
90
85
80
75
70
65
60
85
80
75
70
65
60
Good for classical and jazz.
Good for classical and jazz.
10
100
1000
10
100
1000
Frequency Hz
Frequency Hz
100
95
90
85
80
75
70
65
60
100
95
90
85
80
75
70
65
60
Vented
.5 ft3 @ 33Hz (2" x 11.25"
Vented
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.75 ft3 @ 30Hz (3" x 20.75"
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port) Good overall
enclosure.
port) Good overall
enclosure.
10
100
1000
10
100
1000
Frequency Hz
Frequency Hz
100
95
90
85
80
75
70
65
60
Sealed Bandpass
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Sealed Bandpass
100
95
90
85
80
75
70
65
60
Rear = 0.3 ft3 sealed
Front = 0.3 ft3 @ 60 Hz (3" x
12.0" port) - Very high
output, excellent for Rock or
Rap.
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Rear = 0.5 ft3 sealed
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Front = 0.5 ft3 @ 55 Hz (3" x
7.85" port) - Very high output,
excellent for Rock or Rap.
10
100
1000
Frequency Hz
10
100
1000
Frequency Hz
7
8
Infinite Baffle
. Excellent performance for all types of music at moderate levels
Sealed
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105
1.25 ft3 Good overall
enclosure. Good for classical
and jazz.
100
95
90
85
80
75
70
65
10
100
1000
Frequency Hz
105
100
95
Vented
2.0 ft3 @ 25Hz (3" x 10.00"
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port) Good overall
90
enclosure.
85
80
75
70
65
10
100
1000
Frequency Hz
Sealed Bandpass
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105
100
95
Rear = 0.8 ft3 sealed
Front = 0.8 ft3 @ 60 Hz (4" x
9.125" port) - Very high
output, excellent for Rock or
Rap.
90
85
80
75
70
65
10
100
1000
Frequency Hz
1550 Maple Ave. Montebello, California
90640 USA
Phone: (323) 724-4600 Fax: (323) 722-8125
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