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Vented

RECOMMENDED ENCLOSURES

ENCLOSURES

Woofer Cut-out: 

Mounting Depth: 

Sealed Box: 

Vented Box: 

   • Vent Area: 

   • Vent Length: 

   • Tuning:

Dynamic Power : 

Nominal Power : 

7.48 in.

(190 mm)

7.38 in.

(187.45 mm)

NOT

RECOMMENDED

1.4  cuft.

(39.64 L)

15 in.

(38.1 cm)

 36Hz

2500 Watts

1250 Watts

12.57 sq in.

(81.09 cm2)

11.14 in.

(283 mm)

9.6 in.

(244 mm)

NOT

RECOMMENDED

3.5 cu ft.

(99.12 L)

28 in.

(71.12 cm)

 34Hz

8000 Watts
4000 Watts

52 sq in.

(335.4 cm2)

13.85 in.

(352 mm)

11.75 in.

(298 mm)

NOT

RECOMMENDED

4.5 cu.ft.

(127.43L)

25 in.

(63.5 cm)

 33Hz

8000 Watts
4000 Watts

75 sq in.

(483.87 cm2)

CALCULATING ENCLOSURES

Calculating External Volume

Calculating Internal Volume

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

divide the cubic inches total by 1728”. Example 1512 ÷ 1728=.875 Cubic feet

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“

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

Multiple the new totals

 (H x W x D)

 Example: 10.5 x 12.5 x 7.5 = .5696

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.          

It is recommended to build your enclosure from at least 3/ 4” thick MDF (medium density fiber
board).  Make sure the enclosure is sealed airtight.

5

G7 12.1 / 

G7 12.2

G7 8.2 / 

G7 8.4

G7 15.1 / 

G7 15.2

Summary of Contents for G7 15.1

Page 1: ... continuous improvement of the product specifications are subject to change without notice USER MANUAL Installation Instructions Owners Manual G7 15 1 G7 15 2 G7 12 1 G7 12 2 G7 8 2 G7 8 4 TM SUBWOOFER MODELS ...

Page 2: ...stallation Proper installation will maximize the system s overall performance It is recommended that you have our product installed by an authorized DB Drive retailer However if you decide to install it yourself please carefully read through this manual and take your time to do a quality installation Optimal Product Choice To get the maximum performance out of your stereo system we recommend using...

Page 3: ...ts 1250Watts 2 7 6 85cm 2ΩDualVoiceCoil 4ΩDualVoiceCoil 15 82 402mm 8000Watts 4000Watts G715 1 G715 2 3 7 62cm 1ΩDualVoiceCoil 2ΩDualVoiceCoil TS FS Re Qms Qes Qts VAS Cms BL Mms SPL Xmax G78 2 48 936Hz 2x2Ω 2 010 0 699 0 518 3 478L 49 843mm N 18 336N A 212 219g 79 5dB 20mm G78 4 50 135Hz 2x4Ω 2 158 0 776 0 571 3 829L 52 344mm N 21 660N A 192 525g 79 8dB 20mm G712 1 29 414Hz 2x1Ω 2 108 0 443 0 366...

Page 4: ...aled design for the purpose of tuning the enclosure to higher output at the desired tuned frequency typically 3db or higher Another advantage of a ported enclosure is the reduction of cone motion for the speaker thus distortion at higher power levels within the tuned frequency response of the port A drawback is that building a ported enclosure is more complex than sealed Having the wrong port or v...

Page 5: ...e Example 12 x 14 x 9 1512 1728 Cubic feet Next you must convert cubic inches into cubic feet To do this you must divide the cubic inches total by 1728 Example 1512 1728 875 Cubic feet 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 Next subtract 1 5 from each of the outside measurements of the box W...

Page 6: ...hod Illustration below Parallel Is the method of wiring where you wire match 2 speaker terminals with positive to positive terminal and negative to negative Illustration below Series Parallel This configuration is a combination of both series and parallel We recommend series for the terminal and parallel for the leads to amp Illustration below 4Ω 4Ω 4Ω 2Ω 2Ω 2Ω 2Ω 4Ω 4Ω 1Ω 4Ω 1 x 2Ω DVC SUBWOOFER ...

Page 7: ...OOFER 4 x 4Ω DVC SUBWOOFERS 3 x 4Ω DVC SUBWOOFERS 2Ω 2Ω 2Ω 1 33Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 2Ω 1Ω 4Ω 4Ω 2Ω 4Ω 4Ω 4Ω 2 66Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 4Ω 2Ω 4Ω DVC WIRING CONFIGURATIONS 7 4Ω 4Ω 1Ω 4Ω 2 x 4Ω DVC SUBWOOFERS 2 x 4Ω DVC SUBWOOFER 1Ω 1Ω 1Ω 1Ω 1Ω ...

Page 8: ... lead wires ripped surrounds or folded cones that are results of clipped and excessive power and or improper amplifier calibrations This limited warranty does not extend to units that have been subjected to misuse abuse neglect or accident In DB Drive s judgment products that show evidence of having been altered modified or serviced without DB Drive s authorization will be ineligible under this wa...

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