Earthquake Sound DB-12, DB-10, DB-15 User Manual

Sound That Will Move You

DB Subwoofer

Installation

&

Reference Manual

DB-10
DB-12
DB-15

www.earthquakesound.com

Earthquake Sound Corporation • 2727 McCone Avenue Hayward, CA 94545 • Ph: [phone] Fax [phone]

EARTHQUAKE • DB SPECIFICATIONS

Dear Valued Customer,

Earthquake Sound Corporation, located in Hayward 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.

DB SINGLE VOICE COIL SUBWOOFER SPECIFICATIONS

DRIVER:

Frequency Response

Electrical “Q” (Qes)

Mechanical “Q” (Qms)

Total Speaker “Q” (Qts)

One way linear excursion

Efficiency (1W/1M)

26Hz - 1.3k

8.35

0.70

.75 in. / 19.05mm

DB-12

25Hz - 1.1k

0.93

8.44

0.93

.75in. / 19.05mm

89 dB SPL

DB-15DB-10

23Hz - 1.1k

1.080.76

9.33

0.96

1 in. / 25.4 mm

91 dB SPL 87 dB SPL

CAUTION: Earthquake's DB subwoofers are

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
damage
dangerous with constant exposure. arthquake Sound Corporation

our subwoofers and amplifiers

hearing

. Sound pressure levels exceeding 85dB can be

E
does not assume liability for damages resulting from the direct use
of , and urges users to play

DB or other Earthquake products sound

systems for every day use.

at moderate listening levels

BL

VAS

Nominal Impedance

Recommended Power

30.5 Lit / 1.076ft

4-Ohm

350 WRMS
800 Watts MAX

3

62.2 Lit / 2.195ft

4-Ohm

400 WRMS
1000 Watts MAX

3

12.4TM11.1TM 11.2TM

95.4 Lit / 3.367ft

4-Ohm

450 WRMS
1200 Watts MAX

3

Specifications are subject to change without notice.

EARTHQUAKE SOUND • SUBWOOFER SPECIFICATION CHARTS2

EARTHQUAKE • DB ENCLOSURE DESIGNS

* External dimensions provided
using 3/4" MDF

* Enclosures are designed to play
at 44Hz and up.

* Enclosure designs constructed
using 3/4" MDF wood.

DB-10

10.11” • 257.5mm
” • 245mm9.64

4.84” • 123mm

5.51” • 140mm

9.17" • 233mm”

DB-12

12.48” 317mm

11.65” 296mm

5.31” mm 135

W

D

H

Sealed Recommended

DB-10 Sealed
Range: 0.6 cu. ft. - 1.25 cu. ft.

H: 11.5"

W: 12"

D: 12.5"

DB-12

Sealed

Range: 0.9 cu. ft. - 1.25 cu. ft.

H: 16"

WW

D

H

D

W

Ported

DB-10 Ported
Range: 0.6 cu. ft. - 1.25 cu. ft.

H: 11.5"

W: 14.75"

D: 13.5"

Port: 10" x 1" x 8"

DB-12

Ported

Range: 0.8 cu. ft - 1.25 cu. ft.

H: 16"

WW

D

W

H

Dual Subwoofers

DB-10 Dual Subwoofer
Range: 2.0 cu. ft. - 2.5 cu. ft.

H: 11.5"

W: 29.5"

D: 13.5"

Port: 10" x 1" x 16"

DB-12 Dual Subwoofer
Range: 3.5 cu. ft. - 4.0 cu. ft

H: 16"

W: 14"

D: 13"

5.51” • 140mm

10.98" • 279mm”

DB-15

15.47” • 393mm

14.52” • 369mm

DB-15

Sealed

Range: 1.8 cu. ft. - 2.5 cu. ft.

6.57 ” • 167mm

H: 18"

W: 18"

D: 16"

6.14” • 156mm

13.77” • 350mm

Specifications are subject to change without notice. Tuning frequency may vary depending on the box volume.

EARTHQUAKE SOUND • RECOMMENDED SUBWOOFER ENCLOSURES 3

W: 16"

D: 15.5"

Port: 14.5" x 2" x 8"

DB-15

Ported

Range: 2.3 cu. ft. - 4.2 cu. ft.

H: 18"

W: 18.25"

D: 17.5"

Port: 16.5" x 3" x 16"

W: 32"

D: 15.5"

Port: 14.5" x 2" x 16"

DB-15 Dual Subwoofer
Range: 5.3 cu. ft. - 6.0 cu. ft.

H: 18"

W: 36.5"

D: 17.5"

Port: 16.5" x 3" x 16"

WIRING
CONFIGURATIONS

Ohms 2, 4, 6, 8

HOW TO WIRE YOUR EARTHQUAKE SUBWOOFER

Series formula:

R1+R2+R3+....

Rt=

Where R= Total system impedance

If using SINGLE 2 OHM coils the total load would be 2.0 ohm
If using SINGLE 4 OHM coils the total load would be 4.0 ohm
If using SINGLE 6 OHM coils the total load would be 6.0 ohm
If using SINGLE 8 OHM coils the total load would be 8.0 ohm

If using SINGLE 2 OHM coils the total load would be 1.0 ohm

Ohms 2, 4, 6, 8

If using SINGLE 4 OHM coils the total load would be 2.0 ohm
If using SINGLE 6 OHM coils the total load would be 3.0 ohm
If using SINGLE 8 OHM coils the total load would be 4.0 ohm

Where Rt= Resistance seen by amplifier

Study sample diagram below,
then follow charts to the left.

4-Ohm VC.

8-Ohm

4-Ohm VC.

Example for Dual-4 series

4-Ohm

If using SINGLE 2 OHM coils the total load would be .66 ohm
If using SINGLE 4 OHM coils the total load would be 1.3 ohm
If using SINGLE 6 OHM coils the total load would be 2 ohm
If using SINGLE 8 OHM coils the total load would be 2.7 ohm

Ohms 2, 4, 6, 8

If using SINGLE 2 OHM coils the total load would be 0.5 ohm
If using SINGLE 4 OHM coils the total load would be 1.0 ohm
If using SINGLE 6 OHM coils the total load would be 1.5 ohm
If using SINGLE 8 OHM coils the total load would be 2 ohm

Ohms 2, 4, 6, 8

Specifications are subject to change without notice.

EARTHQUAKE SOUND • WIRING CONFIGURATIONS4

Example for single-4

4-Ohm VC.

2-Ohm

4-Ohm VC.

Example Dual-4 Parallel

EARTHQUAKE SOUND 5-YEAR LIMITED WARRANTY

Five (5) year limited warranty

Earthquake warrants the original purchaser that all Factory Sealed New Audio
Products to be free from defects in material and workmanship under normal and
proper use for a period of five (5) years from the date of purchase (as shown on the
original bill of sale with serial number affixed/written on it). The five (5) year warranty
period is valid only if an authorized Earthquake dealer properly installs the product and
the warranty registration card is properly filled out and sent to Earthquake Sound
Corporation. If a non-authorized party installs the product, a ninety (90) day warranty
period will be applied.

(A) Five (5) years limited warranty plan coverage guidelines:

? First year: Earthquake pays for labor, parts, and ground freight (only in US
mainland, not including Alaska and Hawaii. Shipping to us is not covered).
? Second year: Earthquake pays for labor and parts only, customer must pay

freight both ways.
? Third, fourth & fifth year: Earthquake pays labor only. Customer must pay for
parts and freight both ways.

(B) Warning:

Products (sent for repair) that are tested by Earthquake technicians and
deemed to have no problem(s) will not be covered by the five (5) year limited warranty.
Customer will be charged a minimum of one (1) hour of labor (at the ongoing rates)
plus shipping charges back to customer.

(C ) Earthquake will repair or replace at our option all defective products/parts
subject to the following provisions:

? Defective products/parts have not been altered or repaired by other than an
Earthquake factory-approved technicians.
? Products/parts are not subjected to negligence, misuse, improper use or accident,
damaged by improper line voltage, used with incompatible products or have its serial
number or any part of it altered, defaced or removed, or have been used in any way
that is contrary to Earthquake's written instructions.

(D) Warranty Limitations:

Warranty does not cover products that have been modified or abused,
including but not limited to the following:
? Damages to speaker cabinet and cabinet finish due to misuse, abuse or improper
use of cleaning materials/methods.
? Bent speaker frame, broken speaker connectors, holes in speaker cone, surround
dust cap, burnt speaker voice coil.
? Fading and/or deterioration of speaker components & finish due to improper
exposure to elements.
? Bent amplifier casing, damaged finish on the casing due to abuse, misuse or
improper use of cleaning material.

? Burnt tracers on PCB.

? Product/part damaged due to poor packaging or abusive shipping conditions.
? Subsequent damage to other products.

A warranty claim will not be valid if the warranty registration card is not

properly filled & returned to Earthquake with a copy of the sales invoice. Warranty card
is located on the last page of this manual.

(E) Service Request:

To receive product service, contact Earthquake Service Department at (510)
732-1000 and request an RMA number (Return Material Authorization). Items shipped
without a valid RMA number will be refused. Make sure you provide us with your
complete/correct shipping address, a valid phone number, and a brief description of
the problem you are experiencing with the product. In most cases, our technicians
might be able to resolve the problem over the phone; Thus, eliminating the need to
ship the product.

(F) Shipping Instructions:

Product(s) must be packaged in its original protective box(es) to minimize
transport damage and prevent repackaging cost (at the ongoing rates). Shipper claims
regarding items damaged in transit must be presented to carrier. Earthquake Sound
Corporation reserves the right to refuse improperly packed product. Original bill of sale
must accompany product returned to service. We encourage you to include with the
package a written description of the problem. Ship product to: Earthquake Sound
Corp. 2727 McCone Avenue, Hayward, CA 94545. Ph: [phone]. You are
responsible for the cost of shipping the product to Earthquake Sound Corporation.

(G) Disputes Resolution:

All disputes between clients and Earthquake Sound Corporation resulting
from the five (5) year limited warranty policy must be resolved according to the laws &
registration of the county of Alameda California.

PRODUCT REGISTRATION

This Earthquake DB subwoofers can be registered by returning the Product
Registration card attached to this manual or by visiting
http://earthquakesound.com/form_reg.htm . Please also retain the bill of sale, which
represents proof of purchase and helps expedite warranty issues.

We recommended that you place or write
your serial number here for future
reference, if necessary.

SERIAL NUMBER

Specifications are subject to change without notice.

EARTHQUAKE SOUND • 5-YEAR LIMITED WARRANTY 5

Sound That Will Move You