EarthQuake Magma Installation and operating manual

The Sound That Will MOVE You...
Earthquake Sound Corporation, 1215 O’Brien Drive, Menlo Park, CA, 94025. Ph [phone]. Fax [phone].
Wwww.earthquakesound.com
Magma
DB-R
DBX-R
Tremor-XR
Subwoofers
Installation
&
Reference
Manual

A THANK YOU NOTE
Dear Valued Customer,
Congratulations! You are the proud owner of a high-quality Earthquake Subwoofer.
Earthquake Sound Corporation, located in Menlo Park California at the heart of the San Francisco Bay Area; specializes in
manufacturing high end car audio products ranging from the smallest titanium tweeter to the world’s largest amplifier. In its
dedication to excellence, Earthquake has maintained extensive programs in research and development to provide you
with the highest quality mobile audio products.
This owners manual is designed to better acquaint you with Earthquake products 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 Audio products are capable of producing over 140dB and are commonly used
for high powered audio systems. Prolonged exposure to SPL levels of over 100dB will cause permanent
haring damage. We at Earthquake ask you to please exercise extreme caution when using our product
for competition or every day use.
SUBWOOFER SPECIFICATIONS

OHM-LAW How To Wire Your Subwoofers.

8"
15 5/16"
14"
6 7/8"
SEALED
V = 1.5 ft3
Q = 1.2
F3 = 47Hz
Fc = 63Hz
SEALED
V = 2.0 ft3
Q = 1.0
F3 = 44Hz
Fc = 57Hz
SEALED
V = 2.5 ft3
Q = 0.9
F3 = 42Hz
Fc = 53Hz
SPL LOW BASS
V = 1.5 ft3
FB = optimum
using SLAPS-15
passive radiator
V = 2.5 ft3
FB = optimum
using SLAPS-15
passive radiator
SPL NORMAL LOW BASS
SLAPS
TUNED
SLAPS
TUNED
6 3/8”
12 1/2”
11 1/8”
5 7/8”
SEALED
V = 0.8 ft3
Q = 0.81
F3 = 42Hz
Fc = 48Hz
SEALED
V = 1.0 ft3
Q = 0.76
F3 = 42Hz
Fc = 44Hz
SEALED
V = 1.2 ft3
Q = 0.7
F3 = 41Hz
Fc = 42Hz
SLAPS
V = 1.1 ft3
FB = optimum
using SLAPS-12
passive radiator
TUNED
TUNED
V = 1.4 ft3
FB = optimum
using SLAPS-12
passive radiator
SPL NORMAL LOW BASS
SPL LOW BASS
SLAPS
16.5"
14"
19" 16"
PORT
MAGMA12
#1
Bass Heads
3"
22"
18"
23" 16.5"
PORT
MAGMA15
#1
Bass Heads
6"
MAGMA12 MAGMA15
#1 in Sound Quality, #1 in SPL...
“In sound quality and low frequency extension, the Earthquake MAGMAs excel leaving all other woofers behind” May 1999
CA&E. “With nearly 22mm of linear excursion (four times longer than other sub), and a hefty 3” 4-layer dual voice coil; the
MAGMAs make sealed box bass an octave lower than any other woofer.”
May 1999 CA&E.
MAGMA-Pro www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.

VB = 0.7 ft3
FB = 45Hz
PD = 3”
PL = 8.5”
#1 “SPL”
Ported Box
VB = 1.25 ft3
FB = 35Hz
PD = 3”
PL = 10” #1 Low Bass
Ported Box
VB = .75
Q = .85
F3 = 47Hz
Fc = 56Hz
#2 Low Bass
sealed Box
VB = 1.0 ft3
FB = 55Hz
PD = 4”
PL = 4”
VB = .8 ft3
Q = .87
F3 = 55Hz
Fc = 38Hz
Band Pass
4TH ORDER
VB = .75 ft3
FB = 70Hz
PD = 4”
PL = 8”
VB = 2.8 ft3
FB = 30Hz
PD = 4”
PL = 12”
Band Pass
7TH ORDER
VB = 1.0 ft3
FB = 45Hz
PD = 3”
PL = 7”
#1 “SPL”
Ported Box
VB = 1.75 ft3
FB = 40Hz
PD = 4”
PL = 10” #1 Low Bass
Ported Box
VB = 0.9 ft3
Q = 1.3
F3 = 53Hz
Fc = 74Hz
#2 “SPL”
Sealed Box
VB = 1.7 ft3
Q = .9
F3 = 45Hz
Fc = 57Hz
#2 Low Bass
Sealed Box
VB = 1.4 ft3
FB = 60Hz
PD = 5”
PL = 7”
VB = 1.8 ft3
Q = .95
F3 = 56Hz
Fc = 35Hz
Band Pass
4TH ORDER
VB = 2.5 ft3
FB = 45Hz
PD = 4”
PL = 5”
#1 “SPL”
Ported Box
VB = 4.0 ft3
FB = 35Hz
PD = 4”
PL = 4”
#1 Low Bass
Ported Box
VB = 3.0 ft3
Q = .9
F3 = 45Hz
Fc = 54Hz
#2 Low Bass
Sealed Box
VB = 1.5 ft3
Q = 1.2
F3 = 55Hz
Fc = 76Hz
#2 “SPL”
Sealed Box
VB = 3.0 ft3
FB = 55Hz
Two ports at
4” x 4” each
VB = 3.0 ft3
Q = .9
FO = 55Hz
Fc = 34Hz
Band Pass
4TH ORDER
5 ½”
10 1/4”
9 3/8”
4 1/4”
4 ¾ “
DBR-10
5 ½”
12 3/8”
11”
5 ½”
5 ¾ “
DBR-12
6 1/4”
15 1/4”
14”
6 1/4”
6 3/4”
DBR-15
DB-Street Pro www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.

12"
15"
15 1/2" 11"
PORT (2"x10.5"x11")
Internal dimensions
DBX10D
#1 Bass head design for competition
(External Dimensions using 3/4" MDF)
6 3/8”
10 5/8”
9 3/8”
51/4”
6”
DBXR-10D & DBXR-10
10"
11 1/4 "
DBX8D
10"
#3 Sealed design for tight bass
11"
15 "
DBX8D
Port
3" diameter
7" long
14"
#2 Port tuned design for deep bass
15 1/2" 13"
PORT (1"x9.5"x13")
Internal dimensions
DBX8D
14"
11"
#1 Bass head design for competition
5 1/2”
8”
7 1/4”
4”
4 3/4”
DBXR-8D
(External Dimensions using 3/4" MDF)
16"
12"
11 "
Port
4" diameter
8 1/2" long
DBX10D
#2 Port tuned design for deep bass
12"
12"
11 1/4 "
DBX10D
#3 Sealed design for tight bass
DB-Xtreme www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.

6 3/8”
12 5/8”
11 1/8”
5 6/8”
6 5/8”
7 3/8”
15 5/8”
14”
7”
8 ”
VB = 2 1/2 ft3
FB = optimized with
SLAPS-12 passive
Drone Tuned Box
#1Passive tuned design for
16 1/2"
19" 16"
DBX12D
PORT (3"x12.5"x16") Internal dimensions
#1Bass head design for competition
19"
14"
DBX12D
#2Port tuned design for deep bass
9"
DBX12D
DBXR-15D
DBXR-12D & DBXR-12
13 1/2"
Internal dimensions PORT (2"x12.5"x9")
14"
14"
10 3/4 "
#3Sealed design for tight bass
22"
23" 16 1/2"
Internal dimensions
#1
Bass head design for competition
18"
DBX15D
PORT (6"x16.5"x16.5")
VB = 2 1/2 ft3
FB = optimized with
SLAPS-15 passive
#1Passive tuned design for
Drone Tuned Box
23"
18"
9"
#2
PORT (2"x16.5"x9") Internal dimensions
DBX15D
#2
Port tuned design for deep bass
9"
PORT (2"x16.5"x9") Internal dimensions
DBX15D
12 1/2"
17"
15 "
#3Sealed design for tight bass
14"
DBX12D
17"
DBX15D
DBX15D
DB-Xtreme www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.

TremorX-8 TremorX-10
14"
11"
15 1/2" 13"
PORT (1"x9.5"x13")
Internal dimensions
#1
11"
Bass head design for competition
TremorX8
15"
12"
15 1/2" 11"
PORT (2"x10.5"x11")
Internal dimensions
12"
#1 Bass head design for competition
TremorX10
5 3/4”
10 3/8”
9”
5”
5 5/8”
5 3/4”
8 1/2”
7 1/4”
4 5/8”
5”
14"
15 "
#2
Port
3" diameter
7" long
Port tuned design for deep bass
TremorX8
10"
10"
11 1/4 "
#3 Sealed design for tight bass
TremorX8
16"
11 " #2
Port
4" diameter
8 1/2" long
#2Port tuned design for deep bass
TremorX10
12"
12"
11 1/4 "
#3 Sealed design for tight bass
TremorX10
TREMOR-Xtreme www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.

TremorX-12 15 ½”
13 3/4”
6 3/8”
7 ”
22"
23" 16 1/2"
TremorX-15
PORT (6"x16.5"x16.5") Internal dimensions
#1Bass head design for competition
6 3/8”
12 3/8”
11”
5 1/2”
16 1/2"
14"
19" 16"
PORT (3"x12.5"x16") Internal dimensions
6 1/8”
#1
#1
Bass head design for competition
TremorX12
6 1/2”
VB = 2 1/2 ft3
FB = optimized with
SLAPS-15 passive
Drone Tuned Box
23"
18"
12 1/2" 9"
PORT (2"x16.5"x9") Internal dimensions
18"
17"
17"
15 "
#2 Port tuned design for deep bass
#3 Sealed design for tight bass
#1Passive tuned design for
deep bass small volume
TremorX15
TremorX15
TremorX15
VB = 2 1/2 ft3
FB = optimized with
SLAPS-12 passive
19"
14"
13 1/2" 9"
PORT (2"x12.5"x9") Internal dimensions
14"
14"
10 3/4 "
#2 Port tuned design for deep bass
#3 Sealed design for tight bass
Passive tuned design for
deep bass small volume
TremorX12
TremorX12
Drone Tuned Box
TREMOR-Xtreme www.earthquakesound.com
Specifications are subject to change without notice. Dimensions shown are external Dimensions using 3/4" MDF.