Tannoy Definition Subwoofer

It is a great design. The only significant defect is lack of a high pass filter for your MGs which seriously important especially for those speakers.
Ideally you need at least two subs for that space. But if that price holds
two would cost less the one retail. The big question is why so cheap. Something is wrong and you have to find out what it is. Are they rebuilds? Scratch and dent maybe. Something.

No specifications available so you don’t know how low it will play, and you don’t know how much X max the driver has available, So it may just be a woofer not an actual subwoofer which will play down below 20 Hz which is what the word sub means

For a speaker as quick in transients and dynamics, I suggest one of the Zu subwoofers over the, the Undertone being closest in price to Upscale's blowout price. Zu's subwoofers are the only subs I've heard (including the Tannoy) quick enough to seamlessly match up to fast-transients, responsive speakers like Magnepan, Zu, Quad ESL, and similar.

Phil

Just a closeout price, not scratch & dent. Kevin bought them all, every unit the distributor had remaining, hence the bargain price. According to Kevin's video, it DOES have adjustable high-pass filter. Also, goes down to 15-19Hz, depending on room. Crossover can be set from 31Hz to 125. I have not auditioned with Zu or others, so can't comment on speed or matchup with such as Maggies. But you would have to think they match transient response with anything resembling full-range Tannoys. Plus there is a continuous phase adjustment dial that allows fine-tuning. Think I will grab one myself, two if necessary. FWIW.