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Old 23rd August 2011, 02:37 PM   #1
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Default Behringer B2031P Crossover

I just bought a pair of B2031's without the crossovers, and need to the component values to rebuild them.
Anyone help?
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Old 23rd August 2011, 03:37 PM   #2
burnett is offline burnett  Germany
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Not the original crossover but user "ton-feile" from german "hifi-forum.de" did a superb remake/mod:
Click the image to open in full size.

with Plus-Elektronik.de parts list
Click the image to open in full size.

Source: http://www.hifi-forum.de/index.php?a...postID=217#217
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Old 23rd August 2011, 05:17 PM   #3
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Thanks!

I also found the orignal in the same thread.

HP: 4.5uf + 12 ohm shunt tweeter +
LP: 2mh, 10.6uf shunt woofer +

I am just debating whether to just build the original or use the pimped one you posted above. I can't read German though so it's hard to determine the merits.
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Old 28th July 2012, 08:07 AM   #4
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Better late than never: upgrading of parts quality in this inexpensive Behringer B2031P speakers
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Old 29th May 2013, 05:36 PM   #5
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Does anyone have a working link to the schematics posted earlier?

I've got these monitors and there seems to be some distortion in the kHz range when it gets loud. I suspect the tweeter could use a steeper crossover, but I don't feel I know enough about crossovers to implement this.

Cheers
Chris
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Old 24th September 2013, 09:08 PM   #6
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care of OntarioMaximum on parts express thread:
Zaph's B2031P system measurements posted


"I had asked before if anyone had the crossover schematic for the B2031P. Well no one here had but I found it, along with a "pimped" version from a German forum.
Original:
HP 4.5uf series, 12 ohm R shunt, tweeter +
LP 2mh series, 10.6uf shunt, woofer +

Pimped:
HP 4.7uf series, .39mh shunt, 10uf series, 10 ohm R shunt, then a 1.56uf cap and .30mh in paralleled, and that trap is in series. Finally 8.2ohm +1uf zobel, and tweeter+
LP 1.0mh series, 22uf shunt, then a RCL across the woofer comprised of 4.7R, 38uf, 1.8mh, woofer +

Seems the original measures pretty darn well, but perhaps the "pimped" sounds better.

I got a pair of B2031P's coming sans crossover. Perhaps I should build one of each, listen in mono, THEN choose."
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