"Stewart Pinkerton" wrote in message
...
On Sat, 24 Jul 2004 00:22:59 +0100, "Keith G"
wrote:

....of speakers.

(OK, wot were *you* thinking of ??)

See http://www.apah69.dsl.pipex.com/keit...w/speakers.jpg

I'm auditioning a pair of B&W DM2As and I have to say I'm *very*
impressed.
Talk about size and weight - my Ruark floorstanders weigh 28 kg eack,
these
muthas (standmounters, mind) only weigh 22.2 kg each.....!!!

Does anybody know anything about these? Were/are they rated? (I gather
they
are from about 1975, but as Michael Caine once so famously stated -
they're
in lovely condition...)

Very much a B&W version of the Spendor BC1, but with quite different
(and tighter) bass balance. A nice speaker, but never achieved
'classic' status.

I've got the manual which is full of techie stuff like a Buel & Kjaer
readout (right hand speaker only) and 'polar response' charts but it
doesn't
state a straightforward Sensitivity Figure other than to say:

"Sensitivity - 13 watts into nominal 8 ohm impedance required to produce
a
sound pressure level of 95 dB at one metre at 400 Hz."

What does this translate into?

A pretty insensitive 84dB/w/m, so you'd need a good 60-watter to
achieve decent sound levels.


Quite possibly in Pinkerton Towers, sadly not the case in my listening
room/cubicle/kiosk/booth/empty fag-packet.....


I already know they are pretty sensitive because they are *well large* at
a
relatively low volume setting on a 4 watt amp despite a recommended
rating
of 25 to 60 wpc! (Book also says impedance never drops below 7 or rises
above 22 ohms, 20 Hz - 20 kHz**)

That doesn't make sense, unless you like listening at low levels, or
you are using a weedy valve amp which gets dragged down by modern 3-6
ohm designs.


......where it doesn't seem to matter much (from a 'volume' POV) what amp or
speakers I'm using (see other post) and I could lay 60 (valve) watts to
them, if I needed to.....