Cascading crossovers and more

-zerodb · Mar 9, 2005, 08:13 AM

I'm new to this place, and new to kX for that matter - hello to all.

Just purchased an Audigy2 ZS with kX processing in mind.

I know ZS support is limited currently - but can kX filters be directed to all 8 channels of output? Or will it only recognize 6 channels?

Regardless, this is my ultimate quest - to use the board as a full range integrated active crossover. Meaning I'll ultimately need a high pass, two band-pass, and one low-pass outputs. (tweet, mid, woofer, subwoofer)

Does the existing crossover filter have any bandpass option or is it simply a 2-way crossover? If so I'll need to cascade several filters to achieve what I'm hoping. Is this reasonable or is it going to load down the DSP too much to do something like that?

Thanks for any assistance, I'm just getting oriented here, and I don't have the board plugged in or even out of its box yet, I'm just trying to have a plan before I jump into this!

Chester01 · Mar 9, 2005, 01:02 PM

this is easily achievable, just do as you said and cascade them.

-zerodb · Mar 9, 2005, 04:43 PM

Outstanding! Thanks!

I figured the crossover filtering wouldn't tax the DSP too much but I thought I'd check.

Chester01 · Mar 9, 2005, 05:52 PM

honestly I dont believe that you can "tax" the dsp too much, its a highly specialized processor which operates in near realtime. if you use i/xtram you could tax your pci bus to the point of hearing "clicks" from latency but anything preformed fully on the dsp should not have any problems.

-zerodb · Mar 9, 2005, 07:31 PM

Quote:

Originally Posted by Chester01

honestly I dont believe that you can "tax" the dsp too much, its a highly specialized processor which operates in near realtime. if you use i/xtram you could tax your pci bus to the point of hearing "clicks" from latency but anything preformed fully on the dsp should not have any problems.

I'm guessing that trying to run a 32000 tap convolution filter would run into PCI bandwidth limitations... and I don't see any convolution plugins out there just yet. Guess I can leave that up to the CPU!

Chester01 · Mar 9, 2005, 10:11 PM

you could start a thread about making one (a plugin programer may become interested) I dont know if it is possible to make one or not.

Frankino · Apr 19, 2005, 08:28 AM

by the way talking about crossover cascade, I tried to get a 3way xover. I used 2 2nd orde filters, the second splits high/very high freq. If I move the slider in the range of frequency which should be cutted by the firse xover I still hear a slight ghange in the sound, I know 12db/octave is not an hard cutting but I didn't think it could affect frequency at this deep range

Mar 9, 2005, 08:13 AM	#1
-zerodb DriverHeaven Newbie Join Date: Mar 2005 Posts: 13 Rep Power: 0	Cascading crossovers and more I'm new to this place, and new to kX for that matter - hello to all. Just purchased an Audigy2 ZS with kX processing in mind. I know ZS support is limited currently - but can kX filters be directed to all 8 channels of output? Or will it only recognize 6 channels? Regardless, this is my ultimate quest - to use the board as a full range integrated active crossover. Meaning I'll ultimately need a high pass, two band-pass, and one low-pass outputs. (tweet, mid, woofer, subwoofer) Does the existing crossover filter have any bandpass option or is it simply a 2-way crossover? If so I'll need to cascade several filters to achieve what I'm hoping. Is this reasonable or is it going to load down the DSP too much to do something like that? Thanks for any assistance, I'm just getting oriented here, and I don't have the board plugged in or even out of its box yet, I'm just trying to have a plan before I jump into this!

Mar 9, 2005, 01:02 PM	#2
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	this is easily achievable, just do as you said and cascade them. __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...

Mar 9, 2005, 05:52 PM	#4
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	honestly I dont believe that you can "tax" the dsp too much, its a highly specialized processor which operates in near realtime. if you use i/xtram you could tax your pci bus to the point of hearing "clicks" from latency but anything preformed fully on the dsp should not have any problems. __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...

Mar 9, 2005, 10:11 PM	#6
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	you could start a thread about making one (a plugin programer may become interested) I dont know if it is possible to make one or not. __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...

Mar 9, 2005, 04:43 PM	Thread Starter #3
-zerodb DriverHeaven Newbie Join Date: Mar 2005 Posts: 13 Rep Power: 0	Outstanding! Thanks! I figured the crossover filtering wouldn't tax the DSP too much but I thought I'd check.

Apr 19, 2005, 08:28 AM	#7
Frankino DriverHeaven Newbie Join Date: Mar 2005 Posts: 11 Rep Power: 0	by the way talking about crossover cascade, I tried to get a 3way xover. I used 2 2nd orde filters, the second splits high/very high freq. If I move the slider in the range of frequency which should be cutted by the firse xover I still hear a slight ghange in the sound, I know 12db/octave is not an hard cutting but I didn't think it could affect frequency at this deep range