7.5" Full Range Marine Speaker
Custom Tooled High Efficiency Poly Injection Cone Butyl Rubber Surround
1-1/2" (38mm) Aluminum Voice Coil
400 Watts Peak / 200 Watts RMS
Frequency Response: 40Hz-20KHz
Sensitivity: 92dB (1W/1M)
Impedance: 4 Ohms
Mounting Depth: 2-3/4" (70mm)
Mounting Diameter: 6-11/16" (169.5mm)

Specifications
Tweeter Type: 1" PEI Dome
Max Power: 400 Watts
Efficiency (1W/1M): 92
Frequency Response: 60-20kHz
Min. Mounting Depth Allowing Clearance (mm/in): 70mm/23/4"
Impedance: 4 ohms
Sealed Enclosure Volume (cubic ft): 0.71
Ported Enclosure Volume (cubic ft): 1.25
Ported Diameter (mm/in): 60mm (2-3/8")
Port Length (mm/in): 30mm (1-3/16")

Calculating Required Enclosure Volume
These loudspeakers will perform best if they are installed in a sealed or a ported enclosure with the appropriate interior volume. Please refer to the tables for the suggested volume for your speaker and applications.

These volumes are provided in the table above are in cubic feet. In order to design your enclosure, you will first need to convert this data to cubic inches. To convert cubic feet to cubic inches, simply multiply by 1728:

Model MR752C
Sealed Volume: 1572 cubic inches
Ported Volume: 2160 cubic inches

Calculating Enclosure Dimensions
Calculating the exterior cabinet dimensions requires that you first estimate height and width of the enclosure based on the available space in your boat. You then work with this estimate to determine the depth of the cabinet.

Important considerations when building an enclosure.

Be sure that the cabinet is air-tight. Joints should be glued and caulked on the interior of the joints.

For marine cabinets which may be exposed to moisture, be sure to use an appropriate marine varnish to seal the surface of the MDF well.

Marine Audio

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