DB Drive Okur K3 10D4

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INTRODUCTION

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.

PRODUCT SPECIFICATIONS

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

WARNING!

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 ÷ 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.

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.

(FS)

(Qts.)

(Qms)

(VAS)

(Xmax)

(Re)

(Pe)

(QES)

(Sens)

27.80Hz

0.37

3.45

42.77L

0.78inV

6.44Ω

900/1800

0.42

85.30dB

K7 12D4

25.74Hz

0.45

4.06

104.34L

0.78in

6.43Ω

900/1800

0.51

87.33dB

K7 15D4

30.57Hz

0.36

3.47

19.63L

0.78in

6.43Ω

900/1800

0.40

83.30dB

K7 10D4

Need help?

Do you have a question about the DB Drive Okur K3 10D4 and is the answer not in the manual?

Summary

Introduction and Recommendations

Keep Your Sales Receipt

Essential for warranty claims, keep receipt in a safe place for purchase date verification.

Installation and Enclosure Recommendation

Proper installation and enclosure size maximize performance. Consult authorized retailers or technical dept.

Safety Warnings

Hearing and Driving Safety

High sound pressure can cause hearing loss. Imprudent listening impairs awareness of traffic and emergency vehicles.

Vehicle Installation Safety

Securely fasten the enclosure to the frame or floorpan to prevent it from becoming a projectile during a collision.

Product Specifications

K7 10 D4 Specifications

Technical parameters for the K7 10D4 subwoofer model, including Fs, Qts, VAS, Xmax, Re, Pe, QES, and Sens.

K7 12 D4 Specifications

Technical parameters for the K7 12D4 subwoofer model, including Fs, Qts, VAS, Xmax, Re, Pe, QES, and Sens.

K7 15 D4 Specifications

Technical parameters for the K7 15D4 subwoofer model, including Fs, Qts, VAS, Xmax, Re, Pe, QES, and Sens.

Enclosure Calculation Guide

Calculating External Volume

Steps to calculate the external volume of a subwoofer enclosure by measuring dimensions and converting to cubic feet.

Calculating Internal Volume

Steps to calculate the internal (net) volume by accounting for wood thickness and subtracting from external measurements.

Recommended Enclosures

K7 10 D4 Enclosure Recommendations

Suggested sealed and ported enclosure volumes, port tuning, diameter, and length for the K7 10D4 subwoofer.

K7 12 D4 Enclosure Recommendations

Suggested sealed and ported enclosure volumes, port tuning, diameter, and length for the K7 12D4 subwoofer.

K7 15 D4 Enclosure Recommendations

Suggested sealed and ported enclosure volumes, port tuning, diameter, and length for the K7 15D4 subwoofer.

Okur Product Information

Okur Model Identification

Identifies the Okur product line, including models K3 10D4, K3 12D4, and K3 15D4.

Manufacturer Contact Information

Provides contact details for DB Research L.L.P., including address, phone, fax, and website.