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  1. Home
  2. Diamond Audio Store
  3. Discontinued Diamond Audio Car Audio & Electronics
  4. Discontinued Diamond Audio Car Subwoofers
  5. Discontinued Diamond Audio 8" Car Subwoofers

Discontinued Diamond Audio 8" Car Subwoofers

Optimize your space with Diamond Audio's powerful and compact 8" car subwoofers.

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RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.

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Diamond Audio CM308D2

CM3 Series 8" Dual 2 ohms Subwoofer

CM308D2 big DISCONTINUED
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Diamond Audio CM308D2

CM3 Series 8" Dual 2 ohms Subwoofer

8" Dual 2 ohm Subwoofer • 500 watts Max • Massive Double Stacked Magnet • Cmax™ Optimized Spider and Edge allows long throw and controlled braking • Integrated Rubber Trim Gasket • Symmetrically Balanced Suspension • Radial Vented Basket

1

8" Dual 2 ohm Subwoofer • 500 watts Max • Massive Double Stacked Magnet • Cmax™ Optimized Spider and Edge allows long throw and controlled braking • Integrated Rubber Trim Gasket • Symmetrically Balanced Suspension • Radial Vented Basket

 
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