Finally got everything setup for some temporary playback before I move. Twin servos along with my new M&Ks are currently pounding out the dts version of Titan AE. And O-M-G......this is fun Firstly, a word on the M&Ks.... Although I've only had them a couple of days and they're still running in, I'm very very impressed. The sound is altogether more clear, and the clarity......fantastic! The level of detail I'm hearing is superb (no doubt assisted by my recent change to pre/power), and I'm hearing for the first time a much more clinical sound. Actually clinical isn't perhaps the best word to describe them, as I think that conjures up a picture of harshness and brightness. Neutral is perhaps better. And I've just realised how much I love neutral Are there any drawbacks? Well, I've not played them @ reference level yet, loudest so far is -10db. Most soundtracks seem fine, but I have noticed a slight harshness on some dialogue. Not sure if this is down to room acoustics, running in time or just the speakers themselves (amplification is Rotel 1075 so that should be fine), but I'll get a chance to fully evaluate them once I've moved and am able to play around with room furniture etc. In fact, I believe it's a combination of all 3 above...more so down to running in time and acoustics I think: I replayed the ROTK teaser again earlier today and the harshness in Gandalfs voice didn't seem quite a noticeable as the day I first got the M&Ks: part of me thinks theres an element of "getting used" to the new sound too, asI've always lived with a very "coloured" sound. No doubt the M&Ks will sound even better once they've loosened up a bit, as I really had to up the gain on the channel levels when recalibrating from my old speakers. As for the look of them...well they're certainly bigger than the 1510s - basically wider and taller (they stand 11.7" high), with a bigger woofer (6.5" I think). On my sound organisation stands they look the business (who cares about black boxes or speaker grilles eh? ) The other huge factor on the front soundstage is the subwoofer...and I should now make that plural My living room looks scary..especially when the Dual Servos (one either side of the centre speaker) have their grilles off I've done very little to set them up properly (no point as the whole lots got to be packed up next weekend), literally plugged them both in, turned the volume dials down (got they're almost switched off)....and spun some serious LFE discs. The last time I tried two subwoofers together was when I (briefly) owned 2 x REL Storms. And did I struggle with setting them up! - I tried and tried and couldn't get them to sound right (although this was when I didn't really know how to set them up properly anyway ). So it was with more than a little trepidation that I flicked the power switch on both subs and watched 2 green lights come on before my eyes Jurassic Park III, Titan AE, SW TPM and AOTC have all gone through, and with startling results. To sum it all up..... Oh - my - God. Dual servos have landed.....and rocked my house It's not so much "more bass"....as "deeper bass". Actually its not even deeper bass....but what I really have noticed is that when the frequency plummets into the sub 20hz REAL BASS territory...the impact is without question a hell of alot more forceful. It seems smoother, more effortless, and Christ - the window at the back of my living room really bloody shakes now (the frame rattles). When the ship flies in to land at the beginning of AOTC the room is pressurised like I've never felt (and it was good before).....the opening moments of JPIII are frightening....and the Ice Field sequence is tremendous. It's a real world difference, and that's what so surprised me (I bought it thinking if it didn't make much difference I'd sell it on for the same money). It certainly needs tweaking, there are some frequences where it sounds slightly boomy, but the main concern is whether I can get the 2 working together well in my new HC room. I really want to avoid stacking them if I can, but we'll just have to see.... As for the question: Is it worth £400 for a 2nd servo 15? Well considering the two have cost me £918 in total (including 5 year warranty), which is around the price of a REL Storm(?) and less than a REL Stadium or even the JAMO (or JBL?) Servo sub.....it's a no brainer. Big bucks bass for small money (in relative terms). I'm a happy man.