Old B&W DM220 drivers....

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#21
Interesting....

While just scouring the web for info on DM220's I came across this info:

PRE-OWNED
B&W
STEREO SPEAKERS /
DIGITAL MONITORS
MODEL DM220
#... 9996 & 9995
SOLD 3/12/09
CIRCA 1982-87
for sale
Great performing B&W DM220, Digital Monitor Stereo Speakers. These are easily in the top 10% of speakers we have auditioned for overall balance, power handling, detail and overall sonics. One of the few speakers I have heard that likely won't need an EQ to be pleasing to 90+% of listeners. Only "sort of" issue with these is that grills were originally optional and these did not come with them. The cabinet and drivers all in great shape. These definitely fall into the "wish I could keep them all for myself, but can't" category.

Features include:

- Acoustic Suspension / Infinite Baffle, 3-way cabinet design
- 7" Composite Paper Woofer with inverted, non-deteriorating Butyl Surrounds
- 7" Composite Paper Midrange driver with inverted, non-deteriorating Butyl Surrounds
- 1" Poly-dome tweeter
- Nominal power rating of 10-100 Watts
- Impedance 8 Ω
- 2-Way Binding Post / Banana speaker terminals

Specs:

Cabinet design: MDF construction. Acoustic Suspension / Infinite baffle
Low & Mid Frequency driver type: 2 x 200mm (8") Nominal piston diameter
with 26mm high temperature voice coil with critically impregnated composite short Fiber cone and inverted Butyl rubber suspension.
High Frequency driver type: 1 x 26mm dome tweeter - coil construction of special Polymide material
Sensitivity: 90dB [1w, 1m]
Frequency Response: 53Hz to 20kHz ±3dB
Nominal impedance: 8 Ω
Cross-over frequencies: 3kHz
Recommended Amplifier power rating: 10-100 watts

We have completely tested these speakers and they sound great! All drivers work with no issues. There is a "crush" area on the rear corner of one of the cabinets that was repaired sometime in the past and with the exception of missing grills, they are in great, original cosmetic shape. Measures 27" tall x 11.5" wide x 13.5" deep and weighs 33 lbs unpacked. Includes our standard 90 day limited warranty (excluding problems due to under / over powering.
Condition 8.5
SOLD 3/12/09
Click to expand...

Page at http://www.oaktreevintage.com/Stereo_Speakers.htm

I am going to ask them if they happen to know the paramters I am after. Here's hoping...
 
#23
Shaun said:
Which version of the DM220's do you have? I have a friend who has a pair that I briefly owned. It seems to be the early version, with red circle on the frame (I've seen blue). With some effort I can get them to do a T/S measurement, but not readily.
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Mine are the red surround versions, bought them in NZ many many moons ago. That would be fantastic if you could get the TS parameters at some point. I'll post back here if I find them....

Cheers
Bruce
 
#25
amc184 said:
DM110s are a nice little speaker, I have a couple of pairs myself. If you need the crossover circuit diagram, I can trace it out from mine. I had already done this, but who knows where I put the diagram 🙄.
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That would be cool if you could do the crossover diagram, I could compare it to the DM220 one and go from there. Would be handy incase the T/S params don't surface.....
 
#26
Got a reply from oaktreevintage... I suspect a boiler plate reply...

Hi,
Thanks for visiting oaktreevintage.com. Unfortunately that's something
we don't have now, nor do I know who would have one. Sorry, just no
resources on that one. We are always looking for more stuff. Keep
checking as we never know from day to day what will arrive. Good luck
and thanks again,
Jerry at www.oaktreevintage.com 719-964-7205

PS. ? Please, No further response to this required or needed. Thanks. -
Click to expand...

Gotta love the last line 🙂

Maybe B&W will have better news.....
 
#28
b&W have no info on old speakers.

Do a search on DM220 here. I had a thread several (5?) years ago including a crossover schematic and simulation.

I still use my pair in the conservatory and like them very much. Woodwork (chipboard not MDF with peeling plastic veneer) is not worth much ....

EDIT: I didn't see this is v. old!
 
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