Well not a lot of experience judging by the lack of responses.

I decided then to buy one to see how well it works with the M6s and the answer is quite well. The system will play louder and more cleanly plus of course there's greater bass extension and a sense of space being filled. The bass unit and the amplifier in the M6 must run out of headroom quite quickly as you wind up the volume and off-loading the higher energy stuff to the DSW gives it more room to breathe.

It's quite interesting to feel the activity of the DSW cone and think that's what the M6 bass units were trying to handle.

I realise the M6s are perhaps more style than substance but they fill a price point.

My DSW serial number is in the low 400s so it looks like this is not a popular option with any of the DSP loudspeakers but I am happy with my purchase though I expect the M6s will be replaced in time.

Mark
MC200, AC200, M6, 557, G91