B&W DM70's - top end lacking


I have a pair of DM70’s.
They sound really good with vocal, blues and opera.
The bass is overblown with complex orchestral or progressive.

I am already replacing the bass units with Leak sandwich, as I found that the original units had not been repaired correctly.
They had some sort of home made surround made of thick paper with a 12 inch foam surround stuck on top.
The leaks seem to solve some of the bass issues.
I will get the bass units professionally repaired at some point.

Now to the treble units.
The mid and lower treble seems great, but things like symbols seem muted.
I was told that the electrostatic units had been repaired by One Thing, but now I am not so sure.

I am driving them with an Art Audio Quintet fed from a Conrad Johnson PV9a pre.
My CD is a Unison Unico and I am using a Focus One turntable just now.
Cables are from Chord. (Yes they do help a bit)

These are frustrating speakers, as when at their best, they sound so good.
First I need to know what to expect (especially from the treble).
Then I need to know how to fix any issues.

Sometimes they sound so so good and other times . . .
iscm

Showing 1 response by normaleila


Hi. I'm not really qualified to be here because I don't know much about the technical side. Just want to say that my late father in law designed the case for the DM70 and I think it's beautiful. We have a pair of speakers, a central unit that I think is unique and the original Sugden amp that was used for the original demonstrations. The whole system will have to go to auction because we've downsized. Any ideas on the best place to auction it? I'd post a photo but I can't see that it's possible here.