I've just bought a pair of B&W DM2 a few weeks back.
I've put them through my Sansui 881 which is a 60wpc amp and I feel that the sound is somewhat closed and shunned?!? Also when pushed past 60% of volume the bass drivers start distorting. I figured out that the moving coil is hitting the back of the driver enclosure as it has little play in it. It might have been designed this way to limit the amount of volume is being pushed into them?!? Maybe?!?
Upon opening them up it looks like the DW200 bass driver have ben replaced ( with newer driver "tested may 1993") however they seem to have been replaced with like for like as they look identical to the original ones (which are not painted black) and fit perfectly into the panel but I wonder if the original DW 200 have the same limited play distance in the speaker coil.
I've put up some video to show them off.
1. B&W DM2 vs Monitor Audio Studio 2 vs Monitor Audio System R352
https://www.youtube.com/watch?v=P4BsrmC2I2E
2. B&W DM2 vs Monitor Audio Studio 2 vs Monitor Audio System R352
https://www.youtube.com/watch?v=6p-FflpamP4
3. B&W DM2 vs Monitor Audio Studio 2 vs Sony SS 1005 (B&W made)
https://www.youtube.com/watch?v=wLN0rJYxoUM
4. B&W DM2 vs Monitor Audio Studio 2 vs Sony SS 1005 B&W made
https://www.youtube.com/watch?v=_w6q234xG4k&t=21s
B&W DM2 speaker cone hitting the back magnet / casing
https://www.youtube.com/watch?v=nnuDfqB63_A
B&W DM2 A Speakers - What's on the inside.
https://www.youtube.com/watch?v=LnlNECMq3NI
These speakers are totally different designs yes, but I'm just finding my way around the hi-fi world trying out different things.
I wonder if anyone can tell from the last video whether the green capacitors, or whatever they are, they look out of shape due to ageing and if their upgrade / replacement would make any meaningful difference.
Here's a picture of the crossover of the other speaker I've just opened today.
Attachment 30215
Been trying to remove the plastic knob from the HF potentiometer at the back now but it feels as though it's impossible to pull it out. I've sprayed tome WD forty at the base with the hope to loosen it up but no success, and I've been pulling hard on it. I will be taking the pliers to give it a little squeeze to see if that works.