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CONGRATULATIONS!
You now own The Mule, a first-of-its-kind
subwoofer designed to reproduce extremely high levels of SPL at a point in the
spectrum where the resonance god lives. This precision component, when
properly installed, is capable of exciting the air in your vehicle to a level where
it can vibrate the metal skin of the car and shake your world.
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
•
New Custom Cone with Large Roll Polyether Surround provides longer excursion and
better control.
•
New Revolutionary Computer Numerically Controlled (CNC) Machined Aluminum
Heat Sinks surround the voice coil and remove heat to vastly increase power handling.
•
New Custom Non-Resonant Polypropylene Dust Dome for added structural rigidity
providing solid, well controlled performance.
•
New Heavy Gauge Steel Silver Powder-Coated Basket provides extra rigidity and
damping.
•
Ultra-High Power Handling 2½" Voice Coil with Kapton/Epoxy former increases
power handling and performance.
•
Aerospace Grade Adhesives and Materials insure longevity and high performance.
•
CNC Machined Magnet Plates and pole piece precisely focus the magnetic energy for
optimum performance.
•
High Emissivity Coating on all metal plates improves power handling.
•
Double Magnet Structure for increased linear strength and throw.
•
Vented Pole Piece for greater voice coil cooling.
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DESIGNATED ENCLOSURE
This is a unique subwoofer and it has been designed to operate at peak
efficiency only in the enclosure shown below. Installing it in other
50
55
60
65
70
75
80
85
90
95
10
100
1000
Frequency Hz
dB
Two frequency response curves are shown for this design, one for predicted
“In-Car” response and the other for “Half-Space Anechoic” (out-of-car)
response. The performance difference between the two curves is a result of
the natural acoustics of an “average” automotive environment. This “average”
transfer function is only an approximation of what you may expect to see in
your car. Every car is different.
The curves were generated using 2.83 Volts and measured at 1 meter. Also,
each frequency response curve includes a 12 dB/octave low pass filter at 100
Hz.
.875 cu. ft. o.d.
12.00"
13.50"
1
2
.0
0
"
1
3
.5
0
"
10.50"
12.00"
.745 cu. ft. = 1287.0 cu. in.
225.0 cu. in.
____________________________________________________
.875 cu. ft. gross = 1512.0 cu. in.
Application Notes:
____________________________
____________________________
____________________________
____________________________
____________________________
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R & D Loudspeaker Performance Projection
SPL vs. Frequency (2.83 volts input / 1 meter)
