Soundstream SPL Mule Owner's Manual

SOUNDSTREAM TECHNOLOGIES

120 Blue Ravine Road • Folsom • California 95630 USA

tel [phone] fax [phone]

(REV A, 3/31/98)

Subwoofer

OWNER'S MANUAL AND

INSTALLATION GUIDE

8

1

dB

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

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

.875 cu. ft. o.d.

.745 cu. ft. = 1287.0 cu. in.

woofer + 225.0 cu. in.

____________________________________________________

.875 cu. ft. gross = 1512.0 cu. in.

10.50"

12.00"

"

"

0

0

0

5

.

.

2

3

1

1

12.00"

13.50"

• 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.

95
90
85
80
75
70
65
60
55
50

10 100 1000

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.

2

R & D Loudspeaker Performance Projection
SPL vs. Frequency (2.83 volts input / 1 meter)

Frequency Hz

Application Notes:
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