Boston acoustics G2 SUBS User Manual
G2 - Performance Subwoofers
G2 Specifications/Enclosure Recommendations
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n-Car Response w/ Q-Tune
™
E
nclosure Response
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zH501 05 001 005
In-Car Response w/ Q-Tune
™
Enclosure Response
Model: G21244 G2124 G21044 G2104
Nominal Size: 12" 12" 10" 10"
RMS Power Handling: 300w 300w 300w 300w
Impedance: Dual 4
Frequency Response: 20-350Hz 20-350Hz 24-350Hz 24-350Hz
+/-3dB in car)
(
Ω
Single 4ΩDual 4
Ω
Mounting Cutout Diameter: 11 3/16" 11 3/16" 9 1/4" 9 1/4"
(283mm) (283mm) (235mm) (235mm)
Mounting Depth: 7 3/16" 7 3/16" 6 9/16" 6 9/16"
(182mm) (182mm) (166mm) (166mm)
Recommended Sealed 1.0 ft
3
1.0 ft
3
0.5 ft
3
Enclosure Volume*: (28.3L) (28.3L) (14.2L) (14.2L)
™
Q-Tune
Recommended Ported 2.0 ft
†
: (HP & Q Setting) 33Hz@0.7 33Hz@0.7 28Hz@0.7 28Hz@0.7
3
2.0 ft
3
1.3 ft
3
Enclosure Volume*: (56.6L) (56.6L) (36.8L) (36.8L)
Vent Dia met er: 4" (10cm) 4" (10cm) 3" (7.6cm) 3" (7.6cm)
Vent Len gth : 13" (33cm) 13" (33cm) 10" (25cm) 10"(25cm)
Tuning Frequency: 34Hz 34Hz 36Hz 36Hz
™
†
Q-Tune
*Enclosure volumes include basket and port displacement
†Q-Tune
: (HP & Q Setting) 34Hz@0.7 34Hz@0.7 36Hz@0.9 36Hz@0.9
™
is a feature found on Boston GT Amplifiers
G2 Thiele-Small Parameters
Model: G21244 G2124 G21044 G2104
Parallel
Series
Parallel
Fs: (Hz) 28 28 28 34 34 37
Re: (Ohms) 1.7 6.6 3.3 1.6 6.5 3.3
Qms: 11.23 11.23 11.71 11.07 11.07 11.41
Qes: 0.61 0.61 0.68 0.62 0.62 0.74
Qts: 0.58 0.58 0.65 0.59 0.59 0.70
as: (Liters) 65.0 65.0 73.2 22.0 22.0 22.3
V
Mms: (Grams) 191.0 191.0 163.3 167.3 167.3 141.3
Cms: (µM/Newton) 171 171 193 132 132 134
Xmax: (Mm) 13.3 13.3 12.5 13.3 13.3 12.5
Xmech: (Mm) 30 30 30 30 30 30
2
Sd: (CM
) 520 520 520 345 345 345
Bl: (Tesla-M) 9.56 19.12 11.89 9.70 19.40 11.98
SPL Eff: (dB @ 1w/1m) 85.5 85.5 85.8 83.3 83.3 83.5
SPL Sen: (dB @ 2.83v) 92.3 86.3 89.6 90.2 84.2 87.4
eries
S
G2 Included Hardware
Model:
G21244
G2124
5-Amp Fuse: 2 2 2 2
T-Nut M4: 8 8 8 8
Lock Washer M4: 8 8 8 8
Mounting Screw M4:
Wood Screw M4 x 38mm: 8 8 8 8
Boston Acoustics, Inc.
: 978.538.5000 F: 978.538.5100 W
T
une, SureSet, and T
Q-T
Boston Acoustics logo are registered trademarks of Boston Acoustics, Inc.
Specifications are subject to change without notice. © 2004 Boston Acoustics, Inc.
All rights reserved. Covered by patents issued and/or pending.
00 Jubilee Drive, Peabody, MA 01960 USA
3
unableRadiator are trademarks and Boston, Boston Acoustics, and the
8888
: bostonacoustics.com
G21044
Single 4
3
0.5 ft
3
1.3 ft
G2104
SureSet™Fuse Configurations
21244 / G21044
G
-ohm operation 8-ohm operation 4-ohm
2
Ω
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.
2124 / G2104
G
Single G2 Enclosure Design Example - Sealed
Model: G212" G210"
H = Height: 10.5" (26.7cm) 7.5" (19.1cm)
W = Width: 13.0" (33.1cm) 11.0" (28.0cm)
D = Depth: 13.0" (33.1cm) 11.0" (28.0cm)
3
Gross Volume: 1.0 Ft
†
™
Q-Tune
Enclosure dimensions are internal and include basket displacement
This enclosure size is an example and these dimensions can be modified provided that the
exact internal volume is retained
3
⁄4-inch thick M.D.F. is recommended as a minimum
†Q-Tune
: (HP & Q) 28Hz@0.707 33Hz@0.707
™
is a feature found on Boston GT Amplifiers
(28.3L) 0.5 Ft3(14.2L)
Single G2 Enclosure Design Example - Ported
Model: G212" G210"
H = Height:
15.5" (39.8cm)
W = Width: 16.5" (42.0cm) 13.25" (33.7cm)
D = Depth: 14" (35.6cm) 14" (35.6cm)
P = Port Clearance
Gross Volume: 2.0 Ft
*
:
4" (10cm)
3
(56.6L) 1.3 Ft3(36.8L)
Port Diameter: 4" (10cm) 3" (7.6cm)
Port Length:
†
™
Q-Tune
Enclosure dimensions are internal and include basket and port displacement
This enclosure size 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)
3
⁄4-inch thick M.D.F. is recommended as a minimum
*Recommended distance from sides and back walls of enclosure
†Q-T
: (HP & Q) 34Hz@0.707 36Hz@0.9
une™ is a feature found on Boston GT Amplifiers
13" (33cm) 10" (25cm)
12" (30.5cm)
3" (7.6cm)
042-001942-2
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