Boston Acoustics GTR12, TunableRadiators GTR, GTR TunableRadiator Installation Manual

GTR - TunableRadiators

™

D

W

H

Single Enclosure Design Example

- GTR TunableRadiator

™

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 Ft

3

(28.3L) 0.5 Ft3(14.2L)

GTR Tuning / Q-Tune™Setting 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.

3

⁄4-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

B

d

6

0

6

-

2

1

-

81

-

4

2-

03

-

6

3

-

zH501 05 001 005 0001 0002

In-Car Response w/ Q-Tune

™

Enclosure Response

Subwoofer w/ GTR Enclosure Shape Examples

GTR TunableRadiator™Included Hardware

Model:

GTR12

GTR10

Hex Key 2.5mm 1 1
T-Nut M4: 8 8
Lock W

asher M4:

88
Mounting Screw M4: 8 8
W

ood Screw M4 x 38mm:

8

8

Also included with all GTR TunableRadiators™is the GTR Tuning Hardware, these parts are
individually listed in the GTR TunableRadiator

™

Tuning Hardware section.

GTR TunableRadiator™Tuning Hardware

Small Tuning Mass*

2 x Large T

uning Mass

(1 installed* / 1 in hardware pack)

Screw*
Lock Washer*
Washer*

*Pre-installed on GTR from factory

GTR TunableRadiator™Tuning Frequency Chart

For single recommended G5/GTR enclosures
Tuning Mode: GTR12 GTR10

Enclosure Volume: 1.0 Ft

3

0.5 Ft

3

Tuning Mode 1: 45Hz 49Hz
Tuning Mode 2: 35Hz 35Hz
T

uning 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

Changing the tuning on the GTR TunableRadiators

™

N

ote: The GTR TunableRadiator

™

i

s shipped from the factory in “Tuning Mode #2”.

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)

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
G

TR TunableRadiator

™

and must be installed
before use.

Trapezoid

Rectangle

Reverse

Listed below are several single G5 subwoofer using a GTR
TunableRadiator

™

enclosure shape examples.

FrontTop

Side Top

Side Front

Side Top

Wedge

Side Front

Square with Down-firing GTR

142-001933-2

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.