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In Reply to: I like the use of separate PSU's for Bass and for mid/treble posted by Timbo in Oz on May 26, 2017 at 20:15:57:
Panel crossover is at 600hz.
I do NOT know the 'knee' frequencies,
But that being said, the Low Pass is 12db (2nd order) while the High Pass is 6db (1st order)
They CROSS at 600hz to sum flat THRU the crossover region. The 1st / 2nd order thing means they are also 90 degrees apart.
Using my Preamp, I CUT the lowest bass to the panels at 45 or 50hz which buys me a few percent and puts the crossover frequency closer to 50:50 than running full-range. The crossover in the preamp is 12db / octave.
I think that can be duplicated in MiniDSP with a little experimentation.
In my 'noodle' each amp module has its OWN 600 watt PS. Another version would include a 1200 watt PS module with outputs for a pair of the nCore.
Limiting bandwidth TO the power amp(s) buys as much as 3db AnyWay, so I would't be overly concerned with a few watts here or there. I'll buff-up the heat sinking on the nCore amps using some kind of maybe 100mmX100mm finned heat sink. I need a PRINT of the mount of the amp so I can take it to a machine shop to have the holes PRECISION drilled and tapped.
If I had a little math help, (logarithms?) I could BACK compute the knee freequencies given crossover at 600hz and the slopes. I should be able to, anyway.
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Follow Ups
- RE: I like the use of separate PSU's for Bass and for mid/treble - pictureguy 21:53:01 05/26/17 (0)
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