BEAST of a subwoofer, from personal experience better suited to music
than movies - incredibly accurate, tight, controlled, and dynamic -
though in a small- to medium-sized room it will kick serious ass for
movies too.

Specs are as follows:

* 12" ATC driver (very meaty, ~13kg alone!)
* 650-watt RMS quality ATC amp (1000-watt dynamic!)
* 58cm x 50cm x 50cm (H x W x D)
* 54kg total weight!! Not something you can pick up on your own!
* Dark grey gloss finish (gorgeous, matches ATC Active 10 and Active 20
cabinets)

Official website at www.atc.gb.net, though there isn't much info on the
C4 sub.

£1100, but will consider offers (£2000 new)

Unit is approx. four months old and in perfect condition.

Selling because my room is an absolute beeyatch when it comes to bass -
sucks the life right out of it - and I feel I need to change to
something that can churn out monster SPLs, like one of the big American
subwoofer beasts. This sub is sadly a bit too subtle and refined for my
room.

Ideally would be collected from Edinburgh, but I have the original crate
(yes, crate!) so I could conceivably ship it elsewhere, though the costs
would be entirely up to the buyer.

If you would like a demo, you're more than welcome to come 'round for a
visit.

Cheers,

Dunc

P.S. - Note, this really is a monolithic sub (it's about the same size
as Godzilla itself, the Velodyne HGS-18!) - there's no way you'll get
this past your significant other without prior approval, guaranteed!