Boston Acoustics SPG555, G5, G3, G2, G1 Guide

Subwoofer Size Chart

Subwoofer Models

E

Models

• SPG555

• G5

• G3

• G2

D

• G1

• GTR

C

B

A

A:

B:

C:

D:

E:

Total Width

Cutout Diameter

Magnet Diameter

Mounting Depth

Mounting Flange

SPG555

14 1/4 x 117/8"

Use Cutout

7 1/4"

8 1/4"

13/16"

362 x 302mm

Template

184mm

210mm

18mm

G512

12 3/4"

11 3/16"

9 1/2"

7 3/8"

11/16"

324mm

283mm

242mm

187mm

17mm

G510

10 7/8"

9 1/4"

8 1/4"

6 3/4"

11/16"

276mm

235mm

210mm

171mm

17mm

G312

12 1/2"

11 3/16"

6 1/2"

6 9/16"

5/8"

318mm

283mm

165mm

166mm

16mm

G310

10 7/8"

9 1/4"

6 1/2"

6 3/8"

5/8"

276mm

235mm

165mm

161mm

16mm

G212

12 3/4"

11 3/16"

6"

7 3/16"

3/8"

324mm

283mm

153mm

182mm

9mm

G210

10 7/8"

9 1/4"

6"

6 9/16"

3/8"

276mm

235mm

153mm

166mm

9mm

G112

12 3/4"

11 3/16"

5 1/4"

5"

3/8"

324mm

283mm

133mm

127mm

9mm

G110

10 7/8"

9 1/4"

5 1/4"

4 3/4"

3/8"

276mm

235mm

133mm

121mm

9mm

G108

8 11/16"

7"

5 1/4"

4 1/4"

3/8"

220mm

178mm

133mm

107mm

9mm

GTR12

12 3/4"

11 3/16"

N/A

3" *

11/16"

324mm

283mm

74mm

17mm

GTR10

10 7/8"

9 1/4"

N/A

3" *

11/16"

276mm

235mm

74mm

17mm

*Includes necessary clearance behind GTR