Help selecting driver

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Diyers I need your help finding driver for sealed enclosure.

I have Quad L-ite subwoofer with broken driver (mechanically damaged beyond repair). Original driver have only this marking: Quad No. D-653. Google have nothing on this.

I have this information about subwoofer:
Dimensions: 485 x 288 x 435 mm
Bass Drive Unit: 250 mm (10”) Tri-lam
Amplifier Power Output: 300 W RMS (guessing it's AB type)
Frequency Range: 25 Hz - 95 Hz
Max Power Output: 108dB

Driver resistance (measuring with multimeter) - 6 Ohm
Enclosure volume - looks a little less than 40 liters. (enclosure ~46 liters, but there's internal box for amplifier) .

This sub looks like sturdy build one, would like to give new life to it.
Unfortunately I have zero knowledge about how to select driver.

I was looking at Dayton RSS265HF-4 10" Reference HF Subwoofer 4 Ohm. But just guessing here..

Could you recommend something based on data above?

Big thanks
 
With a voice coil resistance of 6 ohm you need an 8 ohm subwoofer.

Dayton do an 8 ohm version. Dayton Audio RSS265HF-8 10" Reference HF Subwoofer 8 Ohm

However, a quick look at the specs of the 8 ohm version shows that its optimum box volume is 25 litres sealed, or 80 litres ported.

Look for an 8 ohm, 10" subwoofer that requires an optimum box volume of 40 litres to match your enclosure. This would ideally be the optimum sealed box volume, but you could convert your sealed box into a ported box if necessary
 
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