Earthquake Sound Car Speaker DBXI 10 User Manual

LU-050107  
Sound That Will Move You  
DBXi Subwoofer  
Installation  
&
DBXI-10  
DBXI-10D  
DBXI-12  
DBXI-12D  
DBXI-15  
DBXI-15D  
Reference Manual  
Earthquake Sound Corporation • 2727 McCone Avenue Hayward, CA 94545 • Ph: (510) 732-1000 Fax (510) 732-1095  
 
How To Wire Your Earthquake Subwoofer In Parallel  
OHMS-LAW  
Series formula:  
PARALLEL WIRING  
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  
EARTHQUAKE SOUND • PARALLEL WIRING CONFIGURATIONS  
3
 
DBXI ENCLOSURE DESIGNS  
10.80” 274.5mm  
9.84” 250mm  
12.91” 328mm  
11.889” 302mm  
DBXI-10  
DBXI-12  
DBXI-10D  
DBXI-12D  
6.417” 163mm  
6.417” 163mm  
Dimensions shown are external .75” MDF.  
DBXI-10/10D  
Bass head design for competition  
Port tuned design for deep bass  
Sealed design for tight bass  
#1Ported box Recommendation: 1.14-1.5cu.ft. #2Ported box Recommendation: .8-1.25cu.ft. #3Sealed box Recommendation: .77-1.0cu.ft.  
16”  
15”  
12”  
16.5”  
12.5”  
12.5”  
13”  
Port  
12"  
12"  
12”  
Diameter: 4"  
Depth: 8.5”  
DBXI-10/10D  
DBXI-10/10D  
DBXI-10/10D  
DBXI-12/12D  
Bass head design for competition  
#1 Ported box Recommendation: 1.8-2.5cu.ft. #2 Ported box Recommendation: 1.5-1.75cu.ft.  
Port tuned design for deep bass  
Sealed design for tight bass  
#3 Sealed box Recommendation: .9-1.25cu.ft.  
16.5”  
16”  
19”  
14”  
20.5”  
15”  
9”  
13”  
14”  
14”  
14”  
DBXI-12/12D  
DBXI-12/12D  
DBXI-12/12D  
Specifications are subject to change without notice.  
4
EARTHQUAKE SOUND • DBXI SUBWOOFER ENCLOSURE DESIGNS  
 
DBXI ENCLOSURE DESIGNS  
15”  
13.75”  
DBXI-15D  
DBXI-15  
6 1/2”  
Dimensions shown are external .75” MDF.  
DBXI-15/15D  
Bass head design for competition  
Port tuned design for deep bass  
Sealed design for tight bass  
#1 Ported box Recommendation: 3.5-4.2cu.ft. #2 Ported box Recommendation: 2.2-2.5cu.ft. #3 Sealed box Recommendation: 2.0-2.5cu.ft.  
22”  
16.5”  
23”  
18”  
22.5”  
14”  
16”  
9”  
18”  
18”  
18”  
DBXI-15D  
DBXI-15D  
DBXI-15D  
Passive tuned design for deep bass small volume  
#4  
Drone Tuned Box  
VB = 2.5cu.ft.  
FB = optimized with  
SLAPS-15 passive  
Specifications are subject to change without notice.  
EARTHQUAKE SOUND • DBXI SUBWOOFER ENCLOSURE DESIGNS  
5
 
Earthquake, DBXI  
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 toprovide 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 itsentirety. Earthquake technicians and staffare looking forward toanswering any questions you might have.  
CAUTION: Earthquake's DBXI subwoofers are capable of generating high sound pressure levels. You should exercise caution when  
operating our subwoofers and amplifiers. Long term exposures to high levels of sound pressure will cause permanent hearing damage.  
Sound pressure levels exceeding 85dB can be dangerous with constant exposure. Earthquake Sound Corporation does not assume  
liability for damages resulting from the direct use of DBXI or other Earthquake products , and urges users to play sound systems at  
moderate listening levels forevery day use.  
DBXI DUAL & VOICE COIL SUBWOOFER SPECIFICATIONS  
DRIVER:  
DBXI-10  
DBXI-10D  
DBXI-12  
DBXI-12D  
DBXI-15  
DBXI-15D  
Free Air Resonance (Fs)  
28 Hz  
27 Hz  
25 Hz  
24 Hz  
21 Hz  
20 Hz  
Electrical “ Q” (Qes)  
Mechanical “ Q” (Qms)  
Total Speaker “ Q” (Qts)  
Xmax  
0.497  
0.497  
0.45  
0.45  
1.13  
1.14  
8.458  
8.458  
4.70  
4.70  
5.98  
5.99  
0.52  
0.5  
.5  
.5  
.45  
.45  
3" / 76.2mm  
85 dB SPL  
5.2 Ohm  
17.6TM  
3" / 76.2mm  
85 dB SPL  
5.2 Ohm  
17.6TM  
3.5" / 88.9mm  
87 dB SPL  
4.8 Ohm  
23.7TM  
3.5" / 88.9mm  
87 dB SPL  
4.8 Ohm  
23.7TM  
3.5" / 88.9mm  
88 dB SPL  
4.0 Ohm  
26.8TM  
3.5" / 88.9mm  
88 dB SPL  
4.0 Ohm  
26.8TM  
Efficiency (1W/1M)  
REVC  
BL  
21.9 Lit / .773 ft3  
4-Ohm  
21.9 Lit / .773 ft3  
Dual 4-Ohm  
46.4 Lit / 1.639 ft3  
4-Ohm  
91.1 Lit / 3.217 ft3  
4-Ohm  
91.1 Lit / 3.217 ft3  
Dual 4-Ohm  
46.4 Lit / 1.639 ft3  
Dual 4-Ohm  
VAS  
Nominal Impedance  
Recommended Power  
400 WRMS  
1000 Watts MAX  
400 WRMS  
1000 Watts MAX  
500 WRMS  
1500 Watts MAX  
500 WRMS  
1500 Watts MAX  
750 WRMS  
2000 Watts MAX  
750 WRMS  
2000 Watts MAX  
6
EARTHQUAKE SOUND • SUBWOOFER SPECIFICATION CHARTS  
 
CAUTION: Earthquake's DBXI subwoofers are capable of generating high sound pressure levels. You should exercise caution when  
operating our subwoofers and amplifiers. Long term exposures to high levels of sound pressure will cause permanent hearing damage.  
Sound pressure levels exceeding 85dB can be dangerous with constant exposure. Earthquake Sound Corporation does not assume  
liability for damages resulting from the direct use of DBXI or other Earthquake products , and urges users to play sound systems at  
moderate listening levels forevery day use.  
EARTHQUAKE SOUND CORPORATION  
7
 
Sound That Will Move You  
 

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