Rebuilding a REL sub

[doofdoof]

Good day,



I’m looking at rebuilding a REL subwoofer with busted driver and amplifier.
My plan is to rebuild the sub with similar or better spec as original.
Comparing the specs, it looks like I can achieve 33.6Hz at -6dB vs factory 21Hz at -6dB, and still 60W short on power...
https://rel.net/shop/powered-subwoofers/s3/

I have the subwoofer enclosure with 12” Passive Radiator.

I’ve purchased a 10” Peerless subwoofer rated at 300W at 6 ohms.


Now I’m checking if the driver will fit the box and contemplating on which plate amplifier to purchase in Australia.



Subwoofer Box size

40 x 35 x 38 cm OR

15.74 x 13.78 x 14.86 inches

Thickness: 3.5cm OR 1.38 inch

Volume: 31.55 litres



Peerless 10” Subwoofer: See attached specifications



12” Carbon Passive radiator: Spec unknown



Power amplifier calculator using Dayton Audio SPA500DSP plate (not purchased yet)

4 ohm – 500W

6 ohm – estimated 333W





I’ll need to put a blanking plate on the rear of the subwoofer before I mount any plate amplifier.
I've attach some screenshot of the results from WinISD as well as the project.

Any advice on the choice of amplifier or the suitability of the driver will be much appreciated.



Thanks in advance.



Tom