Changing the tuning on the GTR TunableRadiators

Note: The GTR TunableRadiatoris shipped from the factory in “Tuning Mode #2”.

Subwoofer w/ GTR Enclosure Shape Examples

Listed below are several single G5 subwoofer using a GTR TunableRadiatorenclosure shape examples.

Single Enclosure Design Example

- GTR TunableRadiator

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)

Trapezoid

D

W

H

In-Car Response w/ Q-Tune

Enclosure Response

dB

6

0

-6

-12

-18

-24

-30

-36

5 Hz

 

10

 

50

 

100

4.Install the center screw, lock washer, and washer and tighten.

5.Install the dustcap using all five screws.

Warning: The dustcap is a structural part of the GTR TunableRadiatorand must be installed before use.

GTR TunableRadiatorTuning Frequency Chart

For single recommended G5/GTR enclosures

Tuning Mode:

 

GTR12

 

GTR10

Enclosure Volume:

 

1.0 Ft3

 

0.5 Ft3

Tuning Mode 1:

 

45Hz

 

49Hz

Tuning Mode 2:

 

35Hz

 

35Hz

Tuning Mode 3:

 

30Hz

 

30Hz

Weight Chart

Small Tuning Mass

Large Tuning Mass

 

 

 

 

 

Tuning Mode 1:

X

X

Tuning Mode 2:

1

 

1

 

 

 

 

 

 

Tuning Mode 3:

X

2

 

Key:

X = No Mass Used

1 = One Mass Used

2 = Two Mass Used

GTR TunableRadiatorTuning Hardware

Screw*

Lock Washer*

Washer*

Small Tuning Mass*

2 x Large Tuning Mass

(1 installed* / 1 in hardware pack)

*Pre-installed on GTR from factory

SideTop

Reverse

Top

Front

Rectangle

Side

Top

Wedge

Side

Front

Square with Down-firing GTR

SideFront

Model:

12" w/ GTR12

10" w/ GTR10

H = Height:

13" (33.0cm)

9.5" (24.1cm)

W = Width:

13" (33.0cm)

9.5" (24.1cm)

D = Depth:

10.5" (266.7cm)

9.75" (24.8cm)

Gross Volume:

1.0 Ft3 (28.3L)

0.5 Ft3 (14.2L)

GTR Tuning / Q-TuneSetting Matrix:

 

Model:

12" w/ GTR12

10" w/ GTR10

Tuning Mode 1:

45Hz / 42Hz@0.7

50Hz / 45Hz@0.7

Tuning Mode 2:

35Hz / 34Hz@1.0

35Hz / 34Hz@1.0

Tuning Mode 3:

30Hz / 30Hz@1.2

30Hz / 30Hz@1.2

Enclosure dimensions are internal and include basket and GTR displacement

Tuning Assumes Boston G3, G2, or G1 Subwoofer

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.

34-inch thick M.D.F. is recommended as a minimum

*Recommended distance from sides and back walls of enclosure

†Q-Tune™ is a feature found on Boston GT Amplifiers

Factory Tuning Mode

GTR TunableRadiatorIncluded Hardware

Model:

GTR12

GTR10

Hex Key 2.5mm

1

1

T-Nut M4:

8

8

Lock Washer M4:

8

8

Mounting Screw M4:

8

8

Wood Screw M4 x 38mm:

8

8

Also included with all GTR TunableRadiatorsis the GTR Tuning Hardware, these parts are individually listed in the GTR TunableRadiatorTuning Hardware section.

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.

142-001933-2

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Boston Acoustics GTR12 Single Enclosure Design Example GTR TunableRadiator, Trapezoid, GTR TunableRadiator Tuning Hardware

GTR10, GTR12, GTR specifications

Boston Acoustics, a well-respected name in the audio industry, has contributed significantly to the world of high-performance subwoofers with their GTR series, which includes the GTR, GTR12, and GTR10 models. Each of these subwoofers exhibits a unique blend of advanced technologies and innovative design, offering exceptional sound quality for audiophiles and casual listeners alike.

The Boston Acoustics GTR series is known for its powerful performance and deep bass response. The GTR model serves as the foundational piece in this series, featuring a robust 10-inch woofer designed to deliver impressive low-frequency performance. The GTR incorporates a high-efficiency amplifier that maximizes power output and minimizes distortion, ensuring that each note is reproduced with clarity and precision.

Moving up the lineup, the GTR12 boasts a larger 12-inch driver which enhances its ability to produce even deeper bass. This model is equipped with advanced cabinet engineering that minimizes resonance and cabinet interference, further enriching the listening experience. The GTR12 is also equipped with an adjustable crossover, allowing users to fine-tune the sound to their preferences, making it versatile for various music genres and listening environments.

The GTR10, on the other hand, strikes a balance between size and performance. Sporting a 10-inch driver similar to the standard GTR, it is particularly suited for smaller spaces or setups where space is at a premium. Despite its more compact form, the GTR10 does not compromise on sound quality, providing robust bass output and clarity that can elevate any audio experience.

All models in the GTR series feature Boston Acoustics' proprietary BassTrac technology, which intelligently manages incoming audio signals to eliminate distortion and maximize output. This ensures that even at higher volume levels, listeners can enjoy rich, undistorted bass. Additionally, the GTR series includes flexible connectivity options, making them easy to integrate into home theater systems or music setups.

In summary, the Boston Acoustics GTR, GTR12, and GTR10 subwoofers exemplify a commitment to quality sound through thoughtful engineering and innovative technologies. With their powerful drivers, advanced cabinet designs, and BassTrac technology, they offer exceptional bass performance for any music lover. Whether for home theater applications or music playback, the GTR series caters to a wide range of audio needs and preferences, making them a solid choice for anyone looking to enhance their audio experience.