For Sale: MJ Acoustics Reference 100 Subwoofer, in black. Well regarded, musical subwoofer in superb condition and comes with the optional neutrik speakon cable and isolation spikes. (Apologies, no box or manual - though you can print out a set-up guide from their website if needed). Unit around a year old, so looking for £220. Collection preferred as this is quite heavy (and would be awkward to package!). Cheers Steve