10 inch ports

Photo of two 10inch ports

This pair are now being used in England for SPL competitions.

The owner used these ports to achieve 156.7dB, making him the current UK record holder in the Street B category

Here's a little background information on the rig he used to get the record

Organisation	DB drag racing
Category	Street B ie. 2 12" subwoofers , 1 battery and two amplifiers.
Battery	Cactus Sounds 9000
Subwoofers	Digital Design 9512 , dual 1 ohm voice coils
Sounddampening	Dynamat extreme on the floors (double layer) , 4mm fibre flex on the side panels insides and some expanding foam in hard to reach voids.
Power cables	10 runs of power and ground using 0 gauge cable
Amplifiers	Digital design Z1A's running at 0.5 ohm and at the time of testing they were pushing out 7000rms clean power.
Enclosure	18mm thick plywood box with internal volume being 2.4ft^3. tuned to 72hertz, which is also the car's resonant frequency
Ports	Single 10 inch port with 40mm radius flares

Dimensions of 10inch port

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