For more information on selecting the best subwoofer enclosure, visit 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 83 83 84 84 86 86 88 88 Qms

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 F3 (Hz) 65~58 65~58 58~52 58~52 55~46 55~46 47~40 47~40 Pe (Watts) 500~250 500~250 500~300 500~300 500~300 500~300 500~300 500~300 Qtc (@ max power) .2 ~1 cn 0. 0.9~1.2 0.9~1.2 0.9~1.2 0.9~1.2 0.9~1.2 1.0~1.2 1.0~1.2 VENTED ENCLOSURE Vb (Net vol ft3) 0.4 0.4 0.75 0.75 1.5 1.5 4 4 F3 (Hz) 46 46 42 42 43 43 42 42 Fb (Tuning freq.) 49 49 41 41 38 38 38 38 Pe (Watts) 400 400 400 400 400 400 400 400 Por

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 Diamond's CM3 Series subwoofers are primarily designed for use with small sealed enclosures. Good results have been achieved in vented and bandpass enclosures

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 Diamond's CM3 Series subwoofers are primarily designed for use with small sealed enclosures. Good results have been achieved in vented and bandpass enclosures

-EXCURSION AT INFRASONIC FREQUENCIES. Model CM308D2 CM308D4 CM310D2 CM310D4 CM312D2 CM312D4 CM315D2 CM315D4 THIELE/SMALL PARAMETERS SPL 83 83 84 84 86 86 88 88 Qms 6 6 6.9 5.9 6.2 6.4 8.0 8.00 Qes 0.647 0.63 0.605 0.699 0.72 0.79 0.69 0.75 Qts 0.584 0.57 0.557 0.625 0.64 0.70 0.64 0.68 Fs 46 49.03 40.39 41.8 37.4 40.0 30 30.0 Vas 7.5 7.4 14.0 13.3 28.8 26.8 86.58 82.6 Cms 0.133 0.132 0.091 0.086 0.085 0.0792 0.0977 0.0938 Mms 80 80 170 168 213 200 288 300 Sd 0.0200 0.0200 0.03

.091 0.086 0.085 0.0792 0.0977 0.0938 Mms 80 80 170 168 213 200 288 300 Sd 0.0200 0.0200 0.0330 0.0330 0.0490 0.0490 0.0790 0.079 BL 11.5 16.6 15.1 20.1 15.2 20.3 16.1 22.0 Re 3.3 7.04 3.2 6.4 3.3 6.4 3.3 6.4 Xmax (mm) 7.75 (.305") 8.15 (.321") 11 (.433") 11.9 (.468") 11 (.433") 11.9 (.468") 11 (.433") 12 (.472") Znom(Series) 4 8 4 8 4 8 4 8 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 F3 (Hz) 65~58 65~58 58~

42 Fb (Tuning freq.) 49 49 41 41 38 38 38 38 Pe (Watts) 400 400 400 400 400 400 400 400 Ports 2 2 1 1 1 1 1 1 Port I.D. 2" 2" 3" 3" 4" 4" 6" 6" Port Length 15" 15" 13" 13" 13" 13" 9" 9" DIMENSIONS AND VOLUME C—- öl B D i 9 IMPERIAL DIMENSIONS DIMENSION CM3 08 CM3 10 CM3 12 CM3 15 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" Disp

4" 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 DIMENSION CM3 08 CM3 10 CM3 12 CM3 15 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