Diamond Audio Technology M6 12D4 Features, Dimensions and Volumes Technical Specifications

FEATURES

Titanium Magnesium Alloy Cone - High rigidity, smooth linear response Die-cast Alloy Chassis - High strength maintains critical parts alignment

NBR Rubber Surround - Durable at environmental extremes. Large roll allows long stroke Machined Backplate/Pole - Precision engineered to exacting tolerance

Aluminum VC Former - 400% stronger than Kapton®, excellent heat transfer

3" Dia. Pure Copper Coil - 4-layer design. High thermal/current capacity for high power handling. Mirror Image Dual Nomex® Spiders with woven lead wires -Enormous controlled excursion, ultimate durability, no lead slap.

3-Year Warranty - If purchased from and installed by an Authorized Diamond Retailer.

DIMENSIONS AND VOLUMES

TECHNICAL SPECIFICATIONS

The information below is provided to enable custom enclosure design and is intended for professional use only. Please consult your Authorized Diamond Retailer for an enclosure which best suits your requirements.

THIELE/SMALL PARAMETERS

	M6 10D2	M6 10D4	M6 12D2	M6 12D4
Impedance (ohm)	4*	8*	4*	8*
SPL 1w/1m(dB)	84.5	84.5	86	86
Qes	0.54	0.55	0.55	0.54
Qts	0.49	0.50	0.49	0.49
Fs (Hz)	32.0	33.0	31.0	32.0
Vas (L)	14.6	13.9	30.3	28.9
Cms (mm/N)	0.095	0.090	0.087	0.083

METRIC DIMENSIONS

DIMENSION	M6 10	M6 12
A (bolt circle diameter)	246mm	294mm
B (outside diameter)	270mm	320mm
C (height)	138mm	150mm
D(Thru Hole diameter)	228mm	276mm
Displacement	2.63 L	3.33L
IMPERIAL DIMENSIONS
DIMENSION	M6 10	M6 12
A (bolt circle diameter)	9.685"	11.575"
B (outside diameter)	10.629"	12.598"
C (height)	5.433"	5.905"
D(Thru Hole diameter)	8.976"	10.866"
Displacement	0.093 ft3	0.117ft3

B

A

C

D

Mms (g)	296	267	311	298
Sd (M²)	0.033	0.033	0.0497	0.0497
BL (T·M)	18.5	24.8	19.0	26.2
Re	3.3	6.2	3.3	6.2
Xmax (mm)	15	16	15	16

*parameters shown are with voice coils wired in series

RECOMMENDED ENCLOSURES

Diamond's M6 Series subwoofers are primarily designed for use with small sealed enclosures. Good results have also been achieved in vented and bandpass enclosures. Although “free-air” (infinite-baffle) applications are NOT recommended, they may be used successfully in low-power systems (e.g., 75W or less per sub).

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

The enclosure volumes shown below are NET INTERNAL VOLUMES. Driver, vent and brace displacement must be taken into account when designing your enclosure.

	M6 10D2	M6 10D4	M6 12D2	M6 12D4
SEALED ENCLOSURE
Vb (Net vol ft3)	.75~.3	.75~.3	1.75~.6	1.75~.6
F3 (Hz)	42~37	42~37	44~35	44~35
Pe (Watts)	800~600	800~600	800~600	800~600

INSTALLATION

The installations and enclosures shown in this manual 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, consult the "FAQ" page of our web site, www.diamondaudio.com

Qtc (@ max pwr)	0.9~1.2	0.9~1.2	0.9~1.2	0.9~1.2
VENTED ENCLOSURE
Vb (Net vol ft3)	0.75	0.75	1.5	1.5
F3 (Hz)	33	33	35	35
Fb (Tuning freq.)	32	32	31	31
Pe (Watts)	600	600	600	600
Ports	2	2	1	1
Port I.D.	2"	2"	4"	4"
Port Length	20"	20"	18"	18"