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JBL B460 passive sub w/o external crossover unit

So I just inherited some old audiophile equipment, dads been dead a few years and we just moved his widow into a senior community. Among some of my dads stuff I took home was a massive JBL passive sub a B460 and a Bryston 4B-ST amp, but I cant find the JBL BX63A (a external dividing network, crossover) and I there isnt one to be had on ebay or elsewhere. Heres the question: can I hook the amp up to the sub out on my onkyo sc886p pre/pro and set the sub crossover at 60hz? And will it sound right?
andreitour

Showing 2 responses by jr_w

jr_w
27 posts
 
The BX63A puts in several dB of EQ boost at about a 26Hz center IIRC. So to make the sub sound as it did with the BX63A, you'll need to re-create this EQ curve.
jr_w
27 posts
 
Take a look here:

http://www.audioheritage.org/vbulletin/showthread.php?4557-B460

The last paragraph of text describes the operation, the last page is a graph of the drive.

I'm not familiar with your pre/pro, but that's a description of what the BX63A does. I suppose it wouldn't hurt to slap some serious + EQ in at 26Hz and give it a listen. It mentions that the EQ is centered on the vent tuning freqency, so I think that's the main clue as to what to look for.
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