Diamond CM308D4, CM312D2, CM308D2, CM310D4, CM315D2 User Manual

DIMENSIONS AND VOLUME

A

C

FEATURES

Massive Double Stacked Magnet

- High excursion, maximum efficiency
CmaxTM Optimised Spider and Edge

-allows long throw and controlled braking
Integrated Rubber Trim Gasket

- seals driver for front or rear mounting

Symmetrically Balanced Suspension

- controls high excursion yaw.

Radial Vented Basket

- uses venturi effect to maximise cooling efficiency
3 Year Warranty

- if sold and installed by an Authorized Diamond Dealer

IMPERIAL DIMENSIONS
DIMENSION
A (Bolt Circle dia.)
B (Outside dia.)
C (Height)
D (Thru Hole dia.)
Displacement (Ft3)

METRIC DIMENSIONS

DIMENSION
A (Bolt Circle dia.)
B (Outside dia.)
C (Height)
D (Thru Hole dia.)
Displacement (L)

CM3 08

7.755"

8.503"

4.133"

7.401"

0.0325

CM3 08
197mm
216mm
105mm
188mm

0.92 L

B

CM3 10

9.645"

10.314"

5.629"

9.173"

0.0596

CM3 10
245mm
262mm
143mm
233mm

1.69 L

D

CM3 12

11.732"

12.401"

6.220"

11.102"

0.0784

CM3 12
298mm
315mm
158mm
282mm

2.22 L

CM3 15

14.566"

15.354"

7.401"

13.937"

0.1281

CM3 15
370mm
390mm
188mm
354mm

3.63 L

INSTALLATION

Thiele/Small data and suggested enclosure volumes for Diamond CM3 Subwwofers are shown below. The enclosures
specified here are offered as a suggestion only. Since enclosure design is as important to sound quality as the speaker

itself, it is recommended that your Authorized Diamond Retailer assist you in designing and building an enclosure to
suit your vehicle. For more information on selecting the best subwoofer enclosure, visit www.diamondaudio.com
Diamond's CM3 Series subwoofers are primarily designed for use with small sealed enclosures. Good results have been
achieved in vented and bandpass enclosures also.

HIGH PASS ("SUBSONIC") FILTERS MUST BE USED WITH NON-SEALED APPLICATIONS TO PREVENT OVER-EXCURSION AT
INFRASONIC FREQUENCIES.

Model

CM308D2

CM308D4

CM310D2

CM310D4

CM312D2

CM312D4

CM315D2

CM315D4

THIELE/SMALL PARAMETERS

SPL
Qms
Qes
Qts
Fs
Vas
Cms
Mms
Sd
BL
Re
Xmax (mm)
Znom(Series)

83
6

0.647

0.584
46

7.5

0.133
80

0.0200

11.5

3.3

7.75 (.305")
4

83
6

0.63

0.57

49.03

7.4

0.132
80

0.0200

16.6

7.04

8.15 (.321")
8

SEALED ENCLOSURE

Vb (Net vol ft3)
F3 (Hz)
Pe (Watts)
Qtc (@ max power)

0.27~ 0.68
65~58
500~250

0.9~1.2

0.27~ 0.68
65~58
500~250

0.9~1.2

VENTED ENCLOSURE

Vb (Net vol ft3)
F3 (Hz)
Fb (Tuning freq.)
Pe (Watts)
Ports
Port I.D.
Port Length

0.4
46
49
400
2
2"
15"

0.4
46
49
400
2
2"
15"

84

6.9

0.605

0.557

40.39

14.0

0.091
170

0.0330

15.1

3.2
11 (.433")
4

0.50~1.0
58~52
500~300

0.9~1.2

0.75
42
41
400
1
3"
13"

84

5.9

0.699

0.625

41.8

13.3

0.086
168

0.0330

20.1

6.4

11.9 (.468")
8

0.50~1.0
58~52
500~300

0.9~1.2

0.75
42
41
400
1
3"
13"

86

6.2

0.72

0.64

37.4

28.8

0.085
213

0.0490

15.2

3.3
11 (.433")
4

0.6~1.2
55~46
500~300

0.9~1.2

1.5
43
38
400
1
4"
13"

86

6.4

0.79

0.70

40.0

26.8

0.0792
200

0.0490

20.3

6.4

11.9 (.468")
8

0.6~1.2
55~46
500~300

0.9~1.2

1.5
43
38
400
1
4"
13"

88

8.0

0.69

0.64
30

86.58

0.0977
288

0.0790

16.1

3.3
11 (.433")
4

1.2~2.0
47~40
500~300

1.0~1.2

4
42
38
400
1
6"
9"

88

8.00

0.75

0.68

30.0

82.6

0.0938
300

0.079

22.0

6.4
12 (.472")
8

1.2~2.0
47~40
500~300

1.0~1.2

4
42
38
400
1
6"
9"