DB Performance AWD Dyno Tuning Car Speaker K310D4 User Manual

INTRODUCTION  
PRODUCT SPECIFICATIONS  
Congratulations on your purchase of a DB Drive state-of-the-art subwoofer compo-  
nent. Your selection of a DB Drive car audio product indicates a true appreciation of  
fine musical reproduction. Whether adding to an existing system or including a DB  
Drive subwoofer in a new system, you are certain to notice immediate performance  
benefits.  
K3 10D4  
K3 10D2  
K3 12D4  
K3 12D2  
K3 15D4  
30.28Hz  
30.27Hz  
22.88Hz  
22.95Hz  
21.27Hz  
(FS)  
0.47  
0.37  
0.48  
0.39  
0.62  
(Qts.)  
(Qms)  
(VAS)  
(Xmax)  
(Re)  
3.67  
2.52  
4.28  
3.09  
3.98  
32.73L  
0.97in  
7.64Ω  
450/900  
0.53  
31.19L  
0.97in  
3.83Ω  
450/900  
0.44  
88.68L  
0.97in  
7.62Ω  
450/900  
0.54  
84.66L  
0.97in  
3.83Ω  
450/900  
0.45  
185.47L  
0.97in  
7.63Ω  
450/900  
0.73  
KEEP YOUR SALES RECEIPT  
Take this time to attach your sales receipt to the manual and put in a safe place. In  
case of any unforeseen reason this product may need warranty service, your receipt  
will be necessary to establish purchase date. For detailed warranty information  
please refer to enclosed warranty card.  
(Pe)  
(QES)  
(Sens)  
84.18dB  
84.80dB  
84.83dB  
85.45dB  
85.70dB  
RECOMMENDATION  
A speaker’s performance is only as good as it’s enclosure. Proper installation,  
enclosure size and crossover frequency will maximize the overall performance of  
the subwoofer. To properly design and build an enclosure, knowledge of wood-  
working as well as the proper tools are required. We highly recommend that you  
have your enclosure built by an authorized DB Drive retailer. However, if you decide  
to install it yourself, we have included the parameters of each driver and recom-  
mended enclosure sizes. If after reviewing the enclosed information you have any  
addition questions, please feel free to contact our technical dept.  
CALCULATING ENCLOSURES  
It is difficult to give exact box dimensions that are universal for all cars and trucks.  
It is for this reason that you must be able to calculate the space in which you have  
available in order to achieve the proper air volume required.  
It is recommended to build your enclosure from 3/ 4” thick MDF (medium density  
fiberboard). Make sure the enclosure is sealed airtight.  
Calculating External Volume  
1.) To calculate box volume, measure the outside Width x Height x Depth of  
the enclosure. Example 12” x 14” x 9”=1512 ÷ 1728Cubic feet  
WARNING!  
2.) Next you must convert cubic inches into cubic feet. To do this, you must  
Exposure to high pressure levels can cause hearing loss or  
damage. Listening to your system at loud levels while driving, will  
impair your ability to hear traffic sounds and emergency vehicles.  
Use common sense when listening to your system.  
divide the cubic inches total by 1728”. Example 1512 ÷ 1828=.875 Cubic feet  
Calculating Internal Volume  
1.) To calculate the internal (net) volume of the above box you must first multiply  
the thickness of the wood you are using by Two(2). Example 3/4” x 2= 1.5“  
While installing your subwoofer enclosure in the vehicle. Securely  
fasten it to the frame or floorpan. If the enclosure is not secured  
properly, there is danger of it becoming a projectile in a collision.  
2.) Next subtract 1.5 from each of the outside measurements of the box.  
Width  
Height  
Depth  
12 - 1.5 = 10.5  
14 - 1.5 = 12.5  
9 - 1.5 = 7.5  
3.) Multiple the new totals (H x W x D) Example: 10.5 x 12.5 x 7.5 = .5696  
Due to continuing product improvement, speciꢀcations and design are subject to change without notice.  
4.) Next you must convert cubic inches into cubic feet. To do this, you must  
divide the cubic inch total by 1728”. Example 984.375 ÷ 1728=.5696  
cubic feet.  

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