FEATURES
Massive Double Stacked Magnet - high excursion, maximum efficiency CmaxTM Optimized Spider and Edge allow 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 maximize cooling efficiency
3 Year Warranty - if sold and installed by an Authorized Diamond Dealer
DIMENSIONS AND VOLUME
IMPERIAL DIMENSIONS
DIMENSION | CM3 08 | CM3 10 | CM3 12 | CM3 15 |
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A (Bolt Circle dia.) | 7.755" | 9.645" | 11.732" | 14.566" |
B (Outside dia.) | 8.503" | 10.314" | 12.401" | 15.354" |
C (Height) | 4.133" | 5.629" | 6.220" | 7.401" |
D (Thru Hole dia.) | 7.401" | 9.173" | 11.102" | 13.937" |
Displacement (Ft3) | 0.0325 | 0.0596 | 0.0784 | 0.1281 |
METRIC DIMENSIONS |
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DIMENSION | CM3 08 | CM3 10 | CM3 12 | CM3 15 |
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A (Bolt Circle dia.) | 197mm | 245mm | 298mm | 370mm |
B (Outside dia.) | 216mm | 262mm | 315mm | 390mm |
C (Height) | 105mm | 143mm | 158mm | 188mm |
D (Thru Hole dia.) | 188mm | 233mm | 282mm | 354mm |
Displacement (L) | 0.92 L | 1.69 L | 2.22 L | 3.63 L |
INSTALLATION
On the facing page you will find Thiele/Small data and suggested enclosure volumes for Diamond CM3 Subwoofers. 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 the FAQ page of our website, www.diamondaudio.com
Diamond's CM3 Series subwoofers are primarily designed for use with small sealed enclosures. Good results have also been achieved in vented and bandpass enclosures.
HIGH PASS ("SUBSONIC") FILTERS MUST BE USED WITH
The enclosure volumes shown opposite are NET INTERNAL VOLUMES. Driver, vent and brace displacement must be taken into account when designing your enclosure.
CM315D4 |
| 88 | 8.0 | 0.75 | 0.68 | 30 | 82.6 | 0.0938 | 300 | 0.079 | 22.0 | 6.4 | 12 (.472") | 8 |
CM315D2 |
| 88 | 8.0 | 0.69 | 0.64 | 30 | 86.6 | 0.0977 | 288 | 0.0790 | 16.1 | 3.3 | 11 (.433") | 4 |
CM312D4 |
| 86 | 6.4 | 0.79 | 0.70 | 40 | 26.8 | 0.0792 | 200 | 0.0490 | 20.3 | 6.4 | 12 (.468") | 8 |
CM312D2 |
| 86 | 6.2 | 0.72 | 0.64 | 38 | 28.8 | 0.085 | 213 | 0.0490 | 15.2 | 3.3 | 11 (.433") | 4 |
CM310D4 |
| 84 | 5.9 | 0.70 | 063 | 42 | 13.3 | 0.086 | 168 | 0.0330 | 20.1 | 6.4 | 12 (.468") | 8 |
CM310D2 |
| 84 | 6.9 | 0.61 | 0.56 | 40 | 14.0 | 0.091 | 170 | 0.0330 | 15.1 | 3.2 | 11 (.433") | 4 |
CM308D2 CM308D4 | PARAMETERS | 83 83 | 66 | 0.65 0.63 | 0.58 0.57 | 46 49 | 7.5 7.4 | 0.133 0.132 | 80 80 | 0.020 0.0200 | 11.5 16.6 | 3.3 7.0 | 7.75 (.305") 8.15 (.321") | 48 |
Model | THIELE/SMALL | SPL Qms Qes Qts Fs (Hz) | Vas (L) | Cms Mms | Sd (m2) | BL (T.M) | Re ( ) | Xmax (mm) | Znom(Series) | |||||
SEALED ENCLOSURE
Vb (Net vol ft3) 0.27~ 0.68 0.27~ 0.68 0.50~1.0 0.50~1.0 0.6~1.2 0.6~1.2 1.2~2.0 1.2~2.0
65~58 65~58 58~52 58~52 55~46 55~46 47~40 47~40
F3 (Hz)
500~300 | 1.0~1.2 |
500~300 | 1.0~1.2 |
500~300 | 0.9~1.2 |
500~300 | 0.9~1.2 |
500~300 | 0.9~1.2 |
500~300 | 0.9~1.2 |
500~250 | 0.9~1.2 |
500~250 | 0.9~1.2 |
Pe (Watts) | Qtc (@ max power) |
VENTED ENCLOSURE
4
4
1.5
0.75 0.75 1.5
0.4
Vb (Net vol ft3) 0.4
42
42
43
43
42
42
46
46
F3 (Hz)
38 38 400 400 1 1
38 38 400 400 1 1
41 41 400 400 1 1
49 400 2
Ports2
Pe (Watts) 400
Fb (Tuning freq.) 49
6" 9"
6" 9"
4" 4" 13" 13"
3" 3" 13" 13"
2" 15"
Port I.D.2" Port Length 15"
