FOR IMMEDIATE RELEASE
CONTACT: J. B. Stanton Communications
860/542-1234 Voice 860/542-0005 Fax
Bryan Stanton / jbs@jbstanton.com Kim Wilson / [818] 843-5555 Voice kimwilson@jbstanton.com
Boston Acoustics Car Audio Begins Shipping the G5 Subwoofer and GTR Passive Radiator
This sub and its companion radiator are optimized for small enclosures delivering deep and remarkably accurate bass
CES 2005, LAS VEGAS, Jan. 6, 2005 Boston Acoustics, Inc. (NASDAQ: BOSA), a premier manufacturer of high performance audio solutions for use in home music and audio-video systems, after-market and OEM automotive systems begins shipping two new car audio models the G5 High Performance Subwoofer and the GTR TunableRadiator.
Offering several first-time features on a car audio subwoofer, the G5s unique and stunning design allows for installation in small enclosures only 1.0 cubic feet for the 12-inch model and 0.5 cu. feet for the 10-inch model! The GTR TunableRadiators provide additional bass without extra amplifiers or enclosures. A perfect complement to the G5, a single GTR increases bass by +3dB.
The G5 is high performance all the way with 3-inches of peak-to-peak excursion for exceptionally deep and precise bass of pure Boston Sound. The oversized 2.75-inch voice coil and Boston Acoustics patented RadiaVent cooling system increases power - MORE -
2 handling. The integrated vents and the woofers own pistonic action, re-circulates fresh air around the voice coil.
The G5 is the first automotive subwoofer to offer in-field stripping in order to replace a damaged voice coil and woofer cone. The interchangeable SPS (Soft Part System) places the cone, spider, surround, and voice coil on a removable assembly for fast onsite repairs.
Additionally, the patented SureSet system uses standard ATC fuses, allows for simple impedance selection (dual 4-ohm model only) and provides momentary overdrive protection. Rugged spring-loaded input terminals accept bare 8-gauge wire or pin connections.
Coupled with a G5 Subwoofer, the low-profile GTR Tunable Radiator increases overall bass output without additional amplification or enclosure volume, immediately increasing bass output by +3dB. Three user tunable adjustments underneath the removable dustcap, reveal precision weights that allow for individual vehicle requirements or musical preferences. The slim mount design is only 3-inches deep and can be placed anywhere.
Like all Boston Acoustics car audio products, the G5 Subwoofer and GTR Tunable Radiator were completely designed and engineered in the Peabody, MA facility and are tuned to +/- 1dB of the reference master.
The G5 Subwoofer and GTR Tunable Radiator comes in two sizes 12-inch and 10inch. The G5 offers both a single 4-ohm and a dual 4-ohm model. They can be seen with other fine Boston Acoustics products at Booth#1427 in the Central Hall at the Las Vegas Convention Center during CES.

- MORE -

3 G5 Series Models G5 12-44 12- inch dual 4-ohm (2/8 ohm) G5 12-4 12- inch single 4-ohm G5 10-44 10- inch dual 4-ohm (2/8 ohm) G5 10-4 10- inch single 4-ohm
$399.95 $399.95 $349.95 $349.95
GTR TunableRadiator 12-inch 10-inch About Boston Acoustics

$119.95 $ 99.95

Founded in 1979, Boston Acoustics, Inc. (NASDAQ: BOSA) designs, manufactures, and markets high performance audio systems for use in home music and audio-video systems, aftermarket and OEM automotive systems, and custom built-in audio systems. Highly regarded for creating The Boston Sound, the company is renowned for delivering superior, competitively priced products emphasizing performance, consistency and value. For further information, visit the company's Web site at www.bostonacoustics.com.
For high-resolution artwork contact Angela Jennette at angelaj@jbstanton.com or phone [860] 542-1234 Ext.118.

G5 Specifications/Enclosure Recommendations
Model: Nominal Size: RMS Power Handling: Impedance: Frequency Response:

(+/-3dB in car)

G512 Basket Dimensions
G5104 10" 450w Single 4 24-350Hz 9 1/4" (235mm) 6 3/4" (171mm) 0.5 ft3 (14.2L) 33Hz@0.7 1.3 ft3 (36.8L) 3" (7.6cm)
G51244 12" 450w Dual 4 20-350Hz 11 3/16" (283mm) 7 3/8" (187mm) 1.0 ft (28.3L) 28Hz@0.7 2.0 ft3 (56.6L) 4" (10cm)
G5124 12" 450w Single 4 20-350Hz 11 3/16" (283mm) 7 3/8" (187mm) 1.0 ft (28.3L) 28Hz@0.7 2.0 ft3 (56.6L) 4" (10cm)
G51044 10" 450w Dual 4 24-350Hz 9 1/4" (235mm) 6 3/4" (171mm) 0.5 ft (14.2L) 33Hz@0.7 1.3 ft3 (36.8L) 3" (7.6cm)
Mounting Cutout Diameter: Mounting Depth: Recommended Sealed Enclosure Volume*: Q-Tune: (HP & Q Setting) Recommended Ported Enclosure Volume*: Vent Diameter: Vent Length: Tuning Frequency: Q-Tune: (HP & Q Setting)
14" (36cm) 14" (36cm) 11" (28cm) 11"(28cm) 33Hz 33Hz@1.0 33Hz 33Hz@1.0 34Hz 34Hz@0.9 34Hz 34Hz@0.9

G510 Basket Dimensions

*Enclosure volumes include basket and port displacement Q-Tune is a feature found on Boston GT Amplifiers
G5 Thiele-Small Parameters
Model: Fs: (Hz) Re: (Ohms) Qms: Qes: Qts: Vas: (Liters) Mms: (Grams) Cms: (M/Newton) Xmax: (Mm) Xmech: (Mm) Sd: (CM 2 ) Bl: (Tesla-M) SPL Eff: (dB @ 1w/1m) SPL Sen: (dB @ 2.83v) G512-44

Parallel Series

G512-4

G510-44

G510-4
28.88 28.88 29.65 1.55 9.93 0.49 0.47 6.20 9.93 0.49 0.47 3.33 9.94 0.62 0.58
32.37 32.37 34.51 1.54 9.19 0.50 0.47 6.16 9.19 0.50 0.47 3.28 10.47 0.58 0.55
75.28 75.28 74.53 148.5 148.5 135.15.0 45.9.15 87.2 94.15.0 45.18.30 87.2 88.15.3 45.11.72 86.8 90.6
29.77 29.77 29.54 122.4 122.4 109.15.0 45.8.76 84.9 92.15.0 45.17.52 84.9 86.15.3 45.11.60 85.0 88.9
Boston Acoustics, Inc. 300 Jubilee Drive, Peabody, MA 01960 USA T: 978.538.5000 F: 978.538.5100 W: bostonacoustics.com Q-Tune, SureSet, and TunableRadiator are trademarks and Boston, Boston Acoustics, and the Boston Acoustics logo are registered trademarks of Boston Acoustics, Inc. Specifications are subject to change without notice. All rights reserved. Covered by patents issued and/or pending. 2004 Boston Acoustics, Inc. 042-001933-0
G5 - High Performance Subwoofers GTR - TunableRadiators
Single G5 Enclosure Design Example

Sealed

Single G5 Enclosure Design Example - GTR TunableRadiator
Changing the tuning on the GTR TunableRadiators
Note: The GTR TunableRadiator is shipped from the factory in Tuning Mode #2.
G5 w/ GTR Enclosure Shape Examples
Listed below are several single G5 subwoofer using a GTR TunableRadiator enclosure shape examples.
1.Remove the dustcap. 2.Remove the center screw, lock washer, and washer that hold the mass to the GTR. 3.Select the desired tuning mode by placing the correct combination of mass, foam side down, on the center shaft. (use the tuning guide located below) Model: H = Height: W = Width: D = Depth: Gross Volume: G512" w/ GTR12 13" (33.0cm) 13" (33.0cm) 10.5" (266.7cm) 1.0 Ft3 (28.3L) G510" w/ GTR10 9.5" (24.1cm) 9.5" (24.1cm) 9.75" (24.8cm) 0.5 Ft3 (14.2L)
Warning: The dustcap is a structural part of the GTR TunableRadiator and must be installed before use.

Trapezoid

Model: H = Height: W = Width: D = Depth: Gross Volume: Q-Tune : (HP & Q)
G512" 10.5" (26.7cm) 13.0" (33.1cm) 13.0" (33.1cm) 1.0 Ft3 (28.3L) 28Hz@0.707
G10" 7.5" (19.1cm) 11.0" (28.0cm) 11.0" (28.0cm) 0.5 Ft3 (14.2L) 33Hz@0.707
4.Install the center screw, lock washer, and washer and tighten. 5.Install the dustcap using all five screws.

Reverse

Enclosure dimensions are internal and include basket displacement This enclosure shape is an example and these dimensions can be modified provided that the exact internal volume is retained
4-inch thick M.D.F. is recommended as a minimum
GTR Tuning / Q-Tune Setting Matrix: Model: G512" w/ GTR12 45Hz / 42Hz@0.7 35Hz / 34Hz@1.0 30Hz / 30Hz@1.2 G510" w/ GTR10 50Hz / 45Hz@0.7 35Hz / 34Hz@1.0 30Hz / 30Hz@1.2
Q-Tune is a feature found on Boston GT Amplifiers

Ported

Tuning Mode 1: Tuning Mode 2: Tuning Mode 3:
Enclosure dimensions are internal and include basket and GTR displacement These enclosure shapes are examples and these dimensions can be modified provided that the exact internal volume is retained and that there is adequate space behind the woofer and the GTR.
Rectangle GTR TunableRadiator Tuning Frequency Chart
For single recommended G5/GTR enclosures Tuning Mode: Enclosure Volume: Tuning Mode 1: Tuning Mode 2: GTR12 1.0 Ft3 45Hz 35Hz 30Hz Small Tuning Mass X 1 X GTR10 0.5 Ft3 49Hz 35Hz 30Hz Large Tuning Mass X 1 2
*Recommended distance from sides and back walls of enclosure Q-Tune is a feature found on Boston GT Amplifiers Factory Tuning Mode
Model: H = Height: W = Width: D = Depth: P = Port Clearance*: Gross Volume: Port Diameter: Port Length: Q-Tune : (HP & Q)
G512" 15.5" (39.8cm) 16.5" (42.0cm) 14" (35.6cm) 4" (10cm) 2.0 Ft3 (56.6L) 4" (10cm) 14" (36cm) 33Hz@1.0
G510" 12" (30.5cm) 13.25" (33.7cm) 14" (35.6cm) 3" (7.6cm) 1.3 Ft3 (36.8L) 3" (7.6cm) 11" (28cm) 34Hz@1.0
Note: The SureSet feature utilizes standard automotive ATC fuses to select between series or parallel voice-coil operation (DVC only). The fuses also provide voice-coil protection under transient conditions such as accidental momentary overdrive. The fuses will not protect against voice-coil failure resulting from long term high power abuse.
SureSet Fuse Configurations
G51244 / G51044 2-ohm operation 8-ohm operation G5124 / G5104 4-ohm
Tuning Mode 3: Weight Chart Tuning Mode 1: Tuning Mode 2: Tuning Mode 3:
Key: X = No Mass Used 1 = One Mass Used 2 = Two Mass Used
Enclosure dimensions are internal and include basket and port displacement This enclosure shape is an example and these dimensions can be modified provided that the exact internal volume is retained and that there is adequate space behind the vent (diameter of port from the back and side walls)
Square with Down-firing GTR GTR TunableRadiator Tuning Hardware
Screw* Lock Washer* Washer* Small Tuning Mass* 2 x Large Tuning Mass
(1 installed* / 1 in hardware pack)
*Recommended distance from sides and back walls of enclosure Q-Tune is a feature found on Boston GT Amplifiers

GTR TunableRadiator Included Hardware
G8 G8 G8 Model: Hex Key 2.5mm T-Nut M4: Lock Washer M4: Mounting Screw M4: Wood Screw M4 x 38mm: GTRGTR8 8

G5 Included Hardware

Model: Hex Key 2.5mm 7.5-Amp Fuse: T-Nut M4: Lock Washer M4: Mounting Screw M4: Wood Screw M4 x 38mm: G8
SPS Removal and Installation
*Pre-installed on GTR from factory
Please refer to the SPS Removal / Installation instruction sheet for information on disassembly and installation of the SPS.
Also included with all GTR TunableRadiators is the GTR Tuning Hardware, these parts are individually listed in the GTR TunableRadiator Tuning Hardware section.