Using passive and active crossover at the same time. - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 13 Old 09-10-14, 08:22 PM
 
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Ron
 
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Re: Using passive and active crossover at the same time.

Quote:
ajinfla wrote: View Post
That is true only if the filter frequencies are close (within a few octaves) to the passives. But there is another way to be beneficial (with that scenario). Set the active filters well away from the passives. Lets say the passive is at 2k. With the active, you set the HP at< 400hz and the LP at> 8 Khz. You are far enough away to have minimal effect on the 2k filter function, but now your tweeter amp is bandwidth limited (>400hz) and less like to clip if/when the woofer amp does, as power density spectrum tends towards bass frequencies.
This of course assumes, like my previous answers, that the legs of the passive XO are separately/independently driven.

cheers
AJ, I don't mean to hi hack the thread but this brings up a possible problem with my setup... Do I need to have protection with my Bi Amp setup? We are using this setup:

Denon 4520>MiniDSP>T Chip amp> EV DH1A driver feeding a JBL 2360a Horn
Denon 4520>MiniDSP>Yamaha P2500S amp> 1/4 Pie DIY Bass Bin

My crossovers are set at 500 hz
If I do need protection what would I use?

tia,
Ron

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Samsung 65" FP, Yamaha CX-A5100, Xilica XP4080, (4) Klipsch RP160MS, (4) JBL 8340As, (2) Yamaha P2500s amps, PS3, XBox One, (1) Asus mini pc, (2) Furman Power Conditioners, Darbee Darcet, and a Project RPM 1.5 Carbon turntable..
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post #12 of 13 Old 09-11-14, 08:04 AM
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Re: Using passive and active crossover at the same time.

Hi Ron,

The context of what I speak of, is typical 3/4-1 1/8" direct radiator domes. The EV 3" CD is a different animal entirely. Such a driver, in a home environment, connected to say a typical "15 watt" T-amp (you didn't specify), is highly unlikely to be in any danger, regardless of conditions upstream. Your low XO would require a fairly large cap value and I wouldn't recommend that particular method.

cheers,

AJ

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post #13 of 13 Old 09-11-14, 12:05 PM
 
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Ron
 
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Re: Using passive and active crossover at the same time.

Quote:
ajinfla wrote: View Post
Hi Ron,

The context of what I speak of, is typical 3/4-1 1/8" direct radiator domes. The EV 3" CD is a different animal entirely. Such a driver, in a home environment, connected to say a typical "15 watt" T-amp (you didn't specify), is highly unlikely to be in any danger, regardless of conditions upstream. Your low XO would require a fairly large cap value and I wouldn't recommend that particular method.

cheers,
Hi AJ,
Thanks for the info... The T chip amp I am using is 25wpc. Just wanted to make sure i was ok.

My Home Living room Theater
Samsung 65" FP, Yamaha CX-A5100, Xilica XP4080, (4) Klipsch RP160MS, (4) JBL 8340As, (2) Yamaha P2500s amps, PS3, XBox One, (1) Asus mini pc, (2) Furman Power Conditioners, Darbee Darcet, and a Project RPM 1.5 Carbon turntable..
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