INTRODUCTION / SPECIFICATIONS
- 2 -
DRIVER:
Recommended Power
Pro-X184
Pro-X128
600 WRMS
1200 Watts MAX
Pro-X158
VAS
3
386Lt / 13.6ft
3
66Lt / 2.34ft
3
121Lt / 4.25ft
Nominal Impedance
4-Ohm
8-Ohm
8-Ohm
Free Air Resonance (Fs)
36 Hz
49 Hz
42 Hz
Electrical “Q” (Qes)
0.732
0.362
0.506
Mechanical “Q” (Qms)
8.44
7.619
9.183
Total Speaker “Q” (Qts)
0.666
0.345
0.480
Xmax
1" / 25mm
1/2" / 12.7mm
3/4" / 19mm
Efficiency (1W/1M)
98 dB SPL
96 dB SPL
97.5 dB SPL
REVC
3.5 Ohm
6 Ohm
6 Ohm
BL
11.227TM
19.453TM
18.986TM
700 WRMS
1400 Watts MAX
800 WRMS
1600 Watts MAX
Pro-X128 ENCLOSURE DESIGNS
8 5/8” 220mm
12 1/4” 312mm
11 1/8” 284mm
4 13/16
122mm
”
Specifications are subject to change without notice.
#1
Sealed design for tight bass.
Sealed box recommendation:
1-1.25cu.ft.
14”
14”
9”
Pro-X128
Dimensions shown are external using 3/4” MDF
Dear Valued Customer,
Earthquake Sound Corporation, located in Hayward California; specializes in
manufacturing high end car audio products ranging from the smallest titanium
tweeter to the world’s largest amplifiers & subwoofers.
This owners manual is designed to better acquaint you with the Pro-X woofers
and to guide you through all phases of system design and application. It is
imperative that you read this manual in its entirety, Earthquake technicians and
staff are looking forward to answering any questions you might have.
CAUTION:
Earthquake's Pro-X woofers are
our
woofers and amplifiers
hearing damage
E
or other Earthquake products
sound systems
for every day use.
capable of generating high
sound pressure levels. You should exercise caution when operating
. Long term exposures to high levels of sound
pressure will cause permanent
. Sound pressure levels
exceeding 85dB can be dangerous with constant exposure. arthquake
Sound Corporation does not assume liability for damages resulting from
the direct use of
, and urges users to play
at moderate listening levels
- 3 -
Voice Coil Size
4” / 100mm
4” / 100mm
4” / 100mm
#2
Port tuned design
for deep bass.
Ported box
recommendation:
1.5-1.75cu.ft.
17”
14“
12”
Pro-X128
Port
D
: 4"
iameter
Depth: 8”
Woofer Cut Out Diameter:
11 1/8” (284mm)
Woofer Mounting Depth:
4 13/16” (122mm)
Tuning Frequency:
50 Hz
Subwoofer Displacement:
280 Cubic Inches
Tuning Frequency:
40Hz
Port Displacement:
100 Cubic Inches
Subwoofer Displacement:
280 Cubic Inches
