DB DRIVE G7 Series Subwoofers User Manual
- July 8, 2024
- DB DRIVE
Table of Contents
DB DRIVE G7 Series Subwoofers
User’s Manual
- Installation Instructions/ Owner’s Manual •
Due to continuous improvement of the product,
the specifications are subject to change without notice.
Introduction
Congratulations on your purchase of a DB Drive state-of-the-art subwoofer.
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 your DB Drive subwoofer in a
new system, you are certain to notice immediate performance benefits.
Product Commitment
DB’s engineering professionals harnessed years of expertise, experience and passion, coupled with exhaustive testing and creative design to develop the optimal product and performance for your musical enjoyment. This is our commitment to you. It’s what you deserve and have come to expect from DB DRIVE. We appreciate the confidence and look forward to your positive experience.
Keep Your Sales Receipt
Take this time to attach your sales receipt to the manual and put it 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.
Recommendation
A power subwoofer’s performance is only as good as its installation. 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
100% authentic DB Drive electronics and DB LINK wiring and accessories.
Matching DB Drive amplifiers and speakers with your state-of the art
electronics purchase is critical to optimize your system’s performance. Wiring
is the lifeblood of a system, make sure your audio system has the adequate
current and signal transfer it deserves and needs. DB Link has it all, from
wiring rolls; speaker, power, ground and remote to amplifier kits, RCA’s, and
fuse holders, distribution blocks and battery connectors. Insist on getting
the best, DB LINK.
It’s what you deserve to get the optimum performance from your audio system.
IMPORTANT!
Before making any connections, disconnect the car’s battery until the installation is completed to avoid possible damage to the electrical system.
WARNING!
Exposure to a high power sound system 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.
Serial# __ _ MQdel # __ _
PRODUCT FEATURES
- Xtreme Excursion Surround
- True Carbon Fiber Dust Cap
- Proprietary Reinforced Aluminum Die-Cast Basket
- Tri-Layer Progressive Dampeners with Integrated Tinsel Leads
- Radial Balanced Paper Glass Fibrillated Mixed Cone
- 8 Gauge Push Spring Input Terminals
- 4-Layer Aluminum Flat Wire Voice Coil
- Triple Stacked Ferrite Magnets
- Excursion Induced Motor Cooling
- Aluminum Anodized Former With Reinforced Triple Joint
| | | |
|
---|---|---|---|---|---
Structure| 8′ (10.3cm)| 10′ (15.4cm)| 11′ (3048cm)| 15′ (38.1cm)| 18′
(45.71cm)
Max Power| 1500 Watts| 8000 Watts| 8000 Watts| 8000 Watts| 8000 Watts
Nominal Power| 1150 Watts| 4000 Watts| 4000 Watts| 4000 Watts| 4000 Watts
Impedance| 1.7′ (6.85cm) 10 Dual Voice Coil/ 40 Dual Voice Coil| 3′ (7.61cm)
10 Dual Voice Coil/ 10 Dual Voice Coil| 3′ (7.61cm) 10 Dual Voice Coil/ 10
Dual Voice Coil| 3′ (761cm) 10 Dual Voice Coil/ 10 Dual Voice Coil| 3′ (7
61cm) 10 Dual Voice Coil
| | | | | | | | |
---|---|---|---|---|---|---|---|---|---
FS| 48.936Hz| 50.135Hz| 34.043Hz| 35.925Hz| 29.414Hz| 30.346Hz|
24.512Hz| 23.461Hz| 27.002 Hz
Re| 2×20| 2×40| 2×10| 2×20| 2×10| 2.20| 2xl□| 2×20| 2xl□
Qms| 2.010| 2.158| 2.314| 2.542| 2.108| 2.269| 2.182| 2.466| 2.336
Qes| 0.699| 0.776| 0.623| 0.717| 0.443| 0.613| 0.473| 0.573| 0.828
Qts| 0.518| 0.571| 0.491| 0.559| 0.366| 0.482| 0.389| 0.465| 0.611
VAS| 3.478 L| 3.829 L| 15.567 L| 13.164 L| 21008 L| 22.479 L| 48.507L|
79.836L| 106.732 L
Cms| 49.843 mm/N| 52.344 mm/N| 73.165 mm/N| 61872 mm/N| 66.565 mm/N|
71.225 mm/N| 59.964 mm/N| 98.692 mm/N| 58.438 mm/N
BL| 18.336 N/A| 21660 N/A| 11.983 N/A| 17.881 N/A| 16.026 N/A| 19.610
N/A| 17.899 N/A| 19.601 N/A| 13.060 N/A
Mms| 212.219 g| 192.525 g| 298.726 g| 317.218 g| 439.839 g| 386.199 g|
703.084 gr| 466.313 g| 594.496 g
SPL| 79.5dB| 79.8dB| 8l8dB| 8l2dB| 82.7dB| 82dB| 83.7dB| 84.4dB| 85.9 dB
Xmax| 20mm| 20mm| 35mm| 35mm| 35mm| 35mm| 35mm| 35mm| 35mm
PRODUCT DIMENSIONS
A Frame Diameter l
B Mounting Depth B
C Cutout Diameter
| G7 8.2 /
G7 8.4| G710.1 / G710.2| G712.1 / G712.2| G715.1 / G715.2| G71 8.1
---|---|---|---|---|---
fiJ Frame
Diameter| 9.17 in.
(233 mm)| 12 in.
(304.8 mm)| 12.91 in.
(328 mm)| 15.82 in. (402 mm)| 18.78 in.
(477 mm)
Mounting Depth| 7.14 in.
(181.5 mm)| 9 in.
(228.6 mm)| 9.6 in.
(244 mm)| 10.78 in.
(274 mm)| 12.4 in.
(315 mm)
B Cutout
Diameter| 7.48 in.
(190 mm)| 10.25in.
(260.35 mm)| 11.14in.
(283 mm)| 13.85 in.
(352 mm)| 16.67 in.
(423.5 mm)
RECOMMENDED ENCLOSURES
The purpose of the information below is to help you select the most
appropriate type of enclosure for your application. We have selected the two
most popular enclosure types and their performance benefits. Sealed Enclosure
(Air-Suspension design): Characteristically simpler to make, sealed enclosures
usually are better at controlling the woofer’s excursion and performance at
lower frequencies. The added control allows for higher power handling or use
of a bigger amplifier. The secret is to maintain a perfect seal. Using glues
and sealants at all seams is recommended to prevent leaks and integrity of the
enclosure. The size or volume of the enclosure will directly affect the
performance of the woofer. Smaller enclosures generally provide the desired
bump to the frequency response curb and greater SPL. Larger enclosures will
provide a lower but flatter response for deeper bass. In general, the benefit
to the sealed enclosure versus a ported enclosure is a smaller foot print,
simpler build with higher power handling, a more linear flat response,
superior sound quality and extended low frequency output.
Ported Enclosure (Bass-Reflex or Vented): A ported enclosure is simply a
sealed enclosure with a port or vent added to the sealed 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 vent could result in poor sound, and the potential of damaging a woofer
when played too loud or out of the tuning frequency. Thus we recommend not
guessing, please follow the guidelines listed in this manual or go to a
professional. In general, the benefit of a ported enclosure versus a sealed is
higher volume output at the tuned frequency, stronger bass output with lower
power input.
Construction: We recommend using¾” MDF (Medium Density Fiberboard) for the
construction of an enclosure.
It is critical for the side walls of the enclosure not to flex due to the
pressure generated by the woofer, bracing might be required. The enclosure
sides should be secured together with nails/screwed. We also recommend the use
of glues and sealants to maintain the integrity of the enclosure and eliminate
leaks.
Vented
ENCLOSURES| G7 8.2 / G7 8.4| G710.1 / G7 10.2| G712.1 / G712.2| G715.1 /
G715.2| G718.1
---|---|---|---|---|---
Woofer Cut-out:| 7.48 in. (191mm)| 10.25 in.(260.35mm)| 11.14 in. (283 mm)|
13.85 in. (352 mm)| 16.67 in. (423.5 mm)
** Mounting Depth:| 7.14 in. (181.50 mm)| 9 in. (228.6 mm)| 9.6 in. (244
mm)| 10.78 in. (298 mm)| 12.4 in. {315 mm)
Sealed Box:| NOT RECOMMENDED| NOT RECOMMENDED| NOT RECOMMENDED| NOT
RECOMMENDED| NOT RECOMMENDED
Vented Box:| 1.4cu .ft.
(39.64 L)| 2.2cu.ft.
{62.29 L)| 3.5 cu ft.
{99.12 L)| 4.5 cu.ft. (127.43L)| 6.25 cu.ft.**
(176.98L)
- Vent Area:
| 12.57 sq in.
(81 . 09 cm2)| 24 sq in.
(154.83 cm2)| 52 sq in .
(335.4 cm2)| 75 sq in.
(483.87 cm2)| 80 sq in.
(516.12 cm2)
- Vent Length:
| 15 in.
{38.1 cm)| 28 in.
(71.12 cm)| 28 in .
(71.12 cm)| 25 in.
(63.5 cm)| 30 in.
(76.2 cm)
- Tuning:
| 36Hz| 34 z| 34Hz| 33Hz| 30Hz
Dynamic Power:| 2500 Wa s| 8000 Wa s| 8000 Watts| 8000
Watts| 8000 Watts
Nominal Power :| 1250 Wa s| 4000Wa s| 4000 Watts|
4000 Watts| 4000 Watts
CALCULATING ENCLOSURES
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.
Calculating External Volume
To calculate box volume, measure the outside Width x Height x Depth of the
enclosure. Example 12″x 14″x 9″=1512.,. 1528″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
Calculating Internal Volume
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
12 – 1.5 = 10.5
Height
14-1.5 = 12.5
Depth
9-1.5=7.5
Multiple the new totals (H x W x D) Example: 10.Sx 12.Sx 7.5 = 984.375 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
DVC WIRING CONFIGURATIONS
You can change the wiring configuration of your speakers (Series, Parallel and
Series/ Parallel) to match the impedance loads that maximizes the power output
of you amplifier. Wiring the same woofer or multiple woofers in these three
different wiring configurations will result in different impedance loads.
Series: Is the method of wiring of alternate positive with negative
terminals (string method) (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).
1 x20 DVC SUBWOOFER 2Ω
- SERIES
1 x20 DVC SUBWOOFER 2Ω
- PARALLEL
2x40DVC SUBWOOFERS
- SERIES/PARALLEL
l Ω & 2 Ω DVC WIAING CONFIGURATIONS
1 x2Ω DVC SUBWOOFER 2Ω
1 x2Ω DVC SUBWOOFER 2Ω
2 x 1Ω DVC SUBWOOFERS
2 x 2Ω DVC SUBWOOFERS
3×2Ω DVC SUBWOOFERS
4×2Ω DVC SUBWOOFERS
4 Ω DVC WIRING CONFIGURATIONS
1×4Ω DVC SUBWOOFER
2×4Ω DVC SUBWOOFER
2×4Ω DVC SUBWOOFERS
3×4Ω DVC SUBWOOFERS
4×4Ω DVC SUBWOOFERS
LIMITED WARRANTY
DB Drive™ G7™ warrants any G7™ Subwoofers purchased in the U.S.A.
from an authorized DB Drive™ G7™ dealer. All G7™ Subwoofers are warranted to
be free from defects in material and workmanship under normal use and service
for a period of one (1) year. This warranty applies to the original purchase
only.
DB Drive™ will repair any unit that has been found to be defective and under
warranty provided the defect occurs within the one ( 1) year warranty period.
The warranty does not cover burnt or open voice coils, open tinsel 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 warranty.
The original sales invoice must be presented at the time any warranty will be
inspected before any warranty agreement is issued.
Due to the general competition use of the G7™ Subwoofers, warranty is for
repairs only. No exchanges or credits will be given.
To obtain warranty service please contact your retailer or visit our website
at www.dbdrive.net for more details.
Customer Support
DB Research L.L.P. ■ 302 Hanmore Industrial Parkway ■ Harlingen, TX 78550 Ph: (877)787-0101 ■ Fax: 956-421-4513 ■ tech support: support@dbdrive.net Designed and Engineered in the U.S.A.
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