Earthquake Sound Speaker DB 10 User Manual

Sound That Will Move You  
DB Subwoofer  
Installation  
&
DB-10  
DB-12  
DB-15  
Reference Manual  
Earthquake Sound Corporation • 2727 McCone Avenue Hayward, CA 94545 • Ph: (510) 732-1000 Fax (510) 732-1095  
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EARTHQUAKE • DB ENCLOSURE DESIGNS  
W
W
W
* External dimensions provided  
using 3/4" MDF  
D
D
D
D
* Enclosures are designed to play  
at 44Hz and up.  
W
W
H
H
H
* Enclosure designs constructed  
using 3/4" MDF wood.  
Dual Subwoofers  
Sealed Recommended  
Ported  
DB-10  
DB-10 Sealed  
Range: 0.6 cu. ft. - 1.25 cu. ft.  
DB-10 Ported  
Range: 0.6 cu. ft. - 1.25 cu. ft.  
DB-10 Dual Subwoofer  
Range: 2.0 cu. ft. - 2.5 cu. ft.  
10.11” • 257.5mm  
9.64” • 245mm  
H: 11.5"  
W: 12"  
H: 11.5"  
H: 11.5"  
W: 14.75"  
W: 29.5"  
D: 12.5"  
D: 13.5"  
D: 13.5"  
Port: 10" x 1" x 8"  
Port: 10" x 1" x 16"  
5.51” • 140mm  
9.17" • 233mm”  
DB-12  
DB-12 Sealed  
Range: 0.9 cu. ft. - 1.25 cu. ft.  
DB-12 Ported  
Range: 0.8 cu. ft - 1.25 cu. ft.  
DB-12 Dual Subwoofer  
Range: 3.5 cu. ft. - 4.0 cu. ft  
12.48” 317mm  
11.65” 296mm  
H: 16"  
W: 14"  
D: 13"  
H: 16"  
H: 16"  
W: 16"  
W: 32"  
D: 15.5"  
D: 15.5"  
Port: 14.5" x 2" x 8"  
Port: 14.5" x 2" x 16"  
5.51” • 140mm  
10.98" • 279mm”  
DB-15  
DB-15 Sealed  
Range: 1.8 cu. ft. - 2.5 cu. ft.  
DB-15 Ported  
Range: 2.3 cu. ft. - 4.2 cu. ft.  
DB-15 Dual Subwoofer  
Range: 5.3 cu. ft. - 6.0 cu. ft.  
15.47” • 393mm  
14.52” • 369mm  
H: 18"  
W: 18"  
D: 16"  
H: 18"  
H: 18"  
W: 18.25"  
W: 36.5"  
D: 17.5"  
D: 17.5"  
Port: 16.5" x 3" x 16"  
Port: 16.5" x 3" x 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
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HOW TO WIRE YOUR EARTHQUAKE SUBWOOFER  
Series formula:  
WIRING  
CONFIGURATIONS  
Rt= R1+R2+R3+....  
Study sample diagram below,  
then follow charts to the left.  
Where R= Total system impedance  
Where Rt= Resistance seen by amplifier  
4-Ohm VC.  
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  
Ohms 2, 4, 6, 8  
8-Ohm  
4-Ohm VC.  
Example for Dual-4 series  
If using SINGLE 2 OHM coils the total load would be 1.0 ohm  
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  
Ohms 2, 4, 6, 8  
4-Ohm  
Example for single-4  
4-Ohm VC.  
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  
2-Ohm  
4-Ohm VC.  
Ohms 2, 4, 6, 8  
Example Dual-4 Parallel  
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 CONFIGURATIONS  
4
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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.  
? 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.  
(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.  
(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.  
? 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.  
(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: (510) 732-1000. You are  
responsible for the cost of shipping the product to Earthquake Sound Corporation.  
(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.  
(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.  
(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.  
PRODUCT REGISTRATION  
This Earthquake DB subwoofers can be registered by returning the Product  
Registration card attached to this manual or by visiting  
represents proof of purchase and helps expedite warranty issues.  
? 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.  
We recommended that you place or write  
your serial number here for future  
reference, ifnecessary.  
SERIAL NUMBER  
Specifications are subject to change without notice.  
EARTHQUAKE SOUND • 5-YEAR LIMITED WARRANTY  
5
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Sound That Will Move You  
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