DB Drive K5 15D4 User Manual

INTRODUCTION

Congratulations on your purchase of a DB Drive state-of-the-art subwoofer compo­nent. 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.

PRODUCT SPECIFICATIONS

(FS)

(Qts.)

(Qms)

K5 10D2

28.06Hz

0.30

4.00

K5 10D4

28.88Hz

0.32

3.63

K5 12D2

24.78Hz

0.35

4.40

K5 12D4

24.39Hz

0.37

3.82

K5 15D2

25.99Hz

0.46

4.19

K5 15D4

27.26Hz

0.54

4.30

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.

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 wood­working 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 recom­mended enclosure sizes. If after reviewing the enclosed information you have any
addition questions, please feel free to contact our technical dept.

WARNING!

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.

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.

Due to continuing product improvement, specications and design are subject to change without notice.

(VAS)

(Xmax)

(Re)

(Pe)

(QES)

(Sens)

21.86L

0.63in

3.64Ω

750/1500

0.32

83.68dB

23.30L

0.63in

6.43Ω

750/1500

0.36

83.85dB

51.55L

0.63in

3.63Ω

750/1500

0.38

85.00dB

53.22L

0.63in

6.43Ω

750/1500

0.41

84.63dB

105.01L

0.63in

3.63Ω

750/1500

0.51

87.45dB

99.40L

0.63in

6.43Ω

750/1500

0.62

86.98dB

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 ÷ 1728” Cubic feet

2.) Next you must convert cubic inches into cubic feet. To do this, you must
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“

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

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.

Recommended Enclosures

sealed ported

K5 10D2 / K5 10D4

Sealed Enclosure

Box Volume .89cu ft.

Ported Enclosure

Box Volume 1.42cu ft.
Box Tuning 39Hz
Port Diameter 4in
Port Length 16in

K5 12D2 / K5 12D4

Sealed Enclosure

Box Volume 1.25cu ft.

Ported Enclosure

Box Volume 1.57cu ft.
Box Tuning 39Hz
Port Diameter 2 x 3in
Port Length 18in

K5 15D2 / K5 15D4

Sealed Enclosure

Box Volume 1.54cu ft.

Ported Enclosure

Box Volume 2.75cu ft.
Box Tuning 39Hz
Port Diameter 2 x 4in
Port Length 14in

143.9mm/5.6in

161.9mm/6.37in

183.2mm/7.21in

230mm/9.05in

263mm/10.35in

284mm/11.18in

315.5mm/12.42in

352mm/13.85in
384mm/15.11in

okur

Installation Instructions / Owner’s Manual

MODEL
K5 10D2 / K5 10D4
K5 12D2 / K5 12D4
K5 15D2 / K5 15D4

Please Note: Our suggested box volumes are given as internal air requirements

DB Research L.L.P.

302 Hanmore Industrial Parkway // Harlingen, TX 78550
ph: 877.787.0101 // fx: 956.421.4513 // www.dbdrive.net

®