SUBWOOFERS
SUBWOOFER
CONGRATULATIONS!
You have chosen a superior product for reproducing
sized sealed, vented
utstanding connectivity for cable
OWNER'S MANUAL AND
INSTALLATION GUIDE
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:
DESIGN FEATURES
• Installation Flexibility - The EXC woofers perform well in smallerand 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.
• 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.
• 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.
• 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 o
hook up.
• Designed and Manufactured in the U.S.A.
2
Preliminary
SPECIFICATIONS
&
THIELE/SMALL PARAMETERS
Sealed Enclosure
Vented Enclosure
enclosures
SELECTING AN ENCLOSURE
Freq. Response
Sens. 2.83v11 m
Impedance (nom. Z)
Rated Program Power
Fs
Qts
Qms
Qes
Vas (ft3)
Vas (liters)
Vas (m3)
Cms (umIN)
DCR (ohms)
Levc (mH) @ 1 KHz
BL (Tesla m)
Sd (in2)
Sd (m2)
Sd (cm2)
X max; one way (linear mm)
X max; one way (peak mm)
Vd (linear cm3)
Vd (peak cm3)
Vd (linear m3)
Vd (peak m3)
Mms (grams)
Magnet Assembly (oz)
Magnet Weight (oz)
Vf (volume of frame)
Coil length (mm)
Coil diameter (in)
29-500 25-500 22-500
87.91 89.62 90.5
4 4 4
200 300 500
34 30 27
0.421 0.332 0.403
7.282 12.87 11.61
0.45 0.34 0.42
0.59 1.12 3.14
16.7 31.6 89.0
0.017 0.032 0.089
266.8 205.0 187.8
2.91 3.2 3.18
0.6 0.75 0.75
10.63 15.77 14.84
32.6 51.2 82.2
0.021 0.033 0.053
210 330 530
10.41 12.95 12.95
29.21 31.75 31.75
218.61 427.35 686.35
613.41 1047.45 1682.75
.00021861 .00042735 .00068635
.00061341 .00104745 .00168675
80.3 135.2 182.2
128 224 224
44 84 84
100 in3 180 in3 200 in3
31 36 36
2 2.5 2.5
There are several different enclosure designs for different applications.
The EXC subwoofers work very well in all the following enclosure
designs. It is up to you to select the specific enclosure that will work
the best for your particular application.
Infinite Baffle
Infinite baffle is the simplest type of subwoofer installation. In this type of
installation, the woofer(s) is mounted to a baffle, which is then mounted
to either the rear deck or back seat of the vehicle. The best results are
achieved when the trunk area is virtually airtight and isolated from the
passenger compartment.
Pros
• Excellent low frequency extension
• Excellent transient response
• Uses almost no trunk space
• Lower power handling
• Low to medium efficiency
Sealed enclosures are relatively simple to build and install, as all that is
required is an airtight box. The larger the sealed enclosure, the more the
performance resembles that of an infinite baffle installation.
Pros
• Very good low frequency
• Medium efficiency
Cons
extension
• Very good transient response
• High power handling
Vented enclosures use a sealed enclosure with a vent or port in the box
which is tuned to resonate at a specific frequency.
Pros
• Good low frequency
extension down to the
tuning frequency
• High power handling down
to the tuning frequency
• Higher output than sealed
• Low power handling
• Almost no output
Cons
below the tuning
frequency
below the tuning
frequency
Cons
3
4
pass enclosures enclose both sides of the woofer(s). An
High power handling
C
ALCULATING NET INTERNAL ENCLOSURE VOLUMES
SELECTING AN ENCLOSURE
BUILDING THE ENCLOSURE
Sealed Band-pass Enclosure
Sealed bandairtight enclosure is built around the front and back of the woofer and
one chamber is ported to a specific frequency.
Pros
Cons
• 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.
•
within the operating
frequencies
• Very high output
within the range of
the operating
frequencies
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.
Calculating Cylindrical Port Volume
1. Measure the outside diameter of the port and divide by 2 for the
radius.
• Low power handling
beyond the tuning
frequency
• Poor to moderate
transient response
• Poor low frequency
extension
• 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.
• 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's woodworker's glue and
Weldwood work well. To guarantee an airtight box, seal each
inside joint with silicone sealant.
• For Sealed Enclosures, stuff the chamber with 50-75% filling
(approximately 1.5 pounds per cubic foot) of fiberglass insulation
or Dacron.
• For Vented Enclosures, staple 1-inch thick fiberglass insulation or
Dacron 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.
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
.
@ 60 Hz (3" x
.
Infinite Baffle
Excellent performance for all types of music at moderate levels
Sealed
• .5 ft3 Good overall enclosure.
Good for classical and jazz.
Infinite Baffle
Excellent performance for all types of music at moderate levels
100
95
90
85
80
dB
75
70
65
60
10 100 1000
Frequency Hz
Sealed
• .5 ft3 Good overall enclosure.
Good for classical and jazz.
100
95
90
85
80
dB
75
70
65
60
10 100 1000
Frequency Hz
Vented
• .5 ft
3
@ 33Hz (2" x 11.25"
port) Good overall
enclosure.
Sealed Bandpass
• Rear = 0.3 ft3 sealed
• Front = 0.3 ft
12.0" port) - Very high
output, excellent for Rock or
Rap.
3
100
95
90
85
80
dB
75
70
65
60
10 100 1000
100
95
90
85
80
dB
75
70
65
60
10 100 1000
Frequency Hz
Frequency Hz
Vented
• .75 ft
3
@ 30Hz (3" x 20.75"
port) Good overall
enclosure.
Sealed Bandpass
• Rear = 0.5 ft3 sealed
• Front = 0.5 ft
7.85" port) - Very high output,
excellent for Rock or Rap.
3
@ 55 Hz (3" x
100
95
90
85
80
dB
75
70
65
60
10 100 1000
100
95
90
85
80
dB
75
70
65
60
10 100 1000
Frequency Hz
Frequency Hz
7
8
.
Infinite Baffle
Excellent performance for all types of music at moderate levels
Sealed
• 1.25 ft3 Good overall
enclosure. Good for classical
and jazz.
Vented
• 2.0 ft
3
@ 25Hz (3" x 10.00"
port) Good overall
enclosure.
Sealed Bandpass
• Rear = 0.8 ft3 sealed
• Front = 0.8 ft
9.125" port) - Very high
output, excellent for Rock or
Rap.
3
@ 60 Hz (4" x
105
100
95
90
85
dB
80
75
70
65
10 100 1000
105
100
95
90
85
dB
80
75
70
65
10 100 1000
105
100
95
90
85
dB
80
75
70
65
10 100 1000
Frequency Hz
Frequency Hz
Frequency Hz
1550 Maple Ave. Montebello, California
90640 USA
Phone: (323) 724-4600 Fax: (323) 722-8125
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