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1.6qr Active Cross Frequency Question

Posted on February 11, 2012 at 17:05:41

Posts: 289
Joined: June 23, 2008
Getting ready to build a line level cross and bi-amp. What crossover frequency have you guys tried and which sounds best? I can always mimic the original 600hz-ish as well.


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RE: 1.6qr Active Cross Frequency Question, posted on February 11, 2012 at 20:06:54

Posts: 3585
Location: Virginia
Joined: February 21, 2002
December 2, 2004
If you are going active then you can simulate the original crossover with a 1st order HP at ~1470 Hz and a 2nd order LP at ~530. This spreadsheet will give you the component values, schematic and bode diagram. I don't own 1.6's but IMO the active crossover for any speaker should try to match the original (HP 1st order at ~525 Hz, LP 2nd order at 1475 Hz).
If you go with a PXLLO, then I would recommend changing the LP filter to a 1st order at 600 Hz. Just last week I tried designing a PXLLO for the 1.6 (on paper only) and IMO there are just too many problems to justify a 2nd order filter.


Another option is Linkwitz Labs, posted on February 22, 2012 at 20:45:06

Posts: 859
Joined: August 9, 2002
I have an MT1 crossover board from Linkwitz Labs that is set up to duplicate the stock crossover frequencies. You buy the bare board and have to calculate the component values before you build it. But it is an inexpensive and very transparent crossover, far better than pumping signal through the stock crossovers. Highly recommended!
"Knowing what you don't know is, in a sense, omniscience"


RE: 1.6qr Active Cross Frequency Question, posted on February 26, 2012 at 12:57:01

Posts: 237
Joined: January 2, 2012
I'm pretty much going down the same path as the original poster... if I buy something like the Bryston 10B, I would just set the HP to 1472 6db/oct, and the LP 527 at 12 db/oct?


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