Boston Acoustics GTR, GTR10, GTR12 Single Enclosure Design Example -GTR TunableRadiator, Subwoofer w/ GTR Enclosure Shape Examples, Reverse, Rectangle, GTR TunableRadiatorIncluded Hardware, GTR TunableRadiatorTuning Hardware, GTR TunableRadiatorTuning Frequency Chart, Changing the tuning on the GTR T unableRadiators, Trapezoid, Wedge, Square with Down-firing GTR

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 Ft3(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

501 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 Washer M4: 88

Mounting Screw M4: 8 8

Wood Screw M4 x 38mm: 88

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*

2xLarge Tuning 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 Ft30.5 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

Changing the tuning on the GTR TunableRadiators™

Note: The GTR TunableRadiator™isshipped 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

astructural part of the

GTR 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.