Holy crap look at these crossovers!
nguyendot
Posts: 3,594
So I decided to pop the bottom off my DM2000 B&W speakers today...
And look what was behind the covers!
That is one gigantic crossover!
I was bored..lol.
And look what was behind the covers!
That is one gigantic crossover!
I was bored..lol.
Main Surround -
Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub
Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250
Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub
Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250
Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
Post edited by nguyendot on
Comments
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Whoa!!!
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Thanks for the photos, clearly one of the reasons why B&W is one of the top speaker builders. Nicely engineered, convenient to access, and plenty of room to work on if needed.
BTW, they look to be in great shape for their age.
Regards,
Mike -
So I decided to pop the bottom off my DM2000 B&W speakers today...
And look what was behind the covers!
That is one gigantic crossover!
I was bored..lol.
Looking at the bottom view, I was going to say I can't see the veneer layer. Then I realized it looks like 1 inch+ solid plank hardwood.:p Is it? or are my old eyes being deceived? -
B&W 800 series.
"He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche -
Then I realized it looks like 1 inch+ solid plank hardwood. Is it? or are my old eyes being deceived?
It's veneer.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
The date tag shows 1984. That's 2 years younger than me.Main Surround -
Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub
Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250
Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD -
Your not kidding those are nuts, is there any good place to get work done on this kind of stuff in Oklahoma.
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Get what done?
The first one is nothing special. It's very neat looking, but the parts are nothing special and some of the inductors could use better placement.
The second one is pretty nice, but expect to pay for something that looks like that."He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche -
sorry don't want to hijack, but the movers put a nice gash in one of my towers and wanted to know if anyone around here works on repairing cabinets or any other home audio.
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Interesting designs. I've never seen diodes or transistors used in speaker x-overs before. It even looks like they mounted them to a heat sink on the 800D.
Ok, I read the brochure for the DM2000.
http://www.bwgroup-support.com/downloads/specsheets/bw/DM2000-3000%20Brochure.pdf
Apparently, they use some type of 'electronic time delay' which explains the transistors and diodes. I guess its more like an active circuit than the typical designs.For rig details, see my profile. Nothing here anymore... -
sorry don't want to hijack, but the movers put a nice gash in one of my towers and wanted to know if anyone around here works on repairing cabinets or any other home audio.
PM F1nut, he's the woodworking guru!:) -
They are nicely laid out. It makes me wonder if I want to redo crossover locations from the binding post cup to the bottom on a rebuild...
