What is this woofer?

[Studley]

I heard a speaker yesterday that had superb tight and tuneful (multi-note) bass. It utilised 2 of these 15” woofers per side and the following information was provided in the blurb; reinforced paper diaphragms, 800W power handling, 4.5” voice coil, aluminium demodulation ring, twin spider suspension, ferite motor and +/- 14mm excursion. Sensitivity must be in the 90s. Here are some photos:

Anybody know what these woofers are?

 

[5th element]

Possibly this.

http://www.sbaudience.com/index.php/products/subwoofers/nero-15sw800/

 

[Studley]

I think you’ve got it, well done 😀. The Nero line is SBA’s top line I believe and the quality of the bass really was superb. Obviously there was more to it than just the drivers, but it shows what they are capable of . . .