hi herman,
with my test I could hear the effect of placing a digital filter where there was no filter at all and therefor could hear what exactly this filter does. really bad is probably exagerated a bit but one could easily hear the negative effects of such a filter. in your case you replaced an analog filter with a digital one. thats very different. analog filter also got a lot of problems. ones I replaced the stock mundorf silver/gold caps in my tweeter xo with teflon v-caps. it is shocking to hear how much music get lost in these highly regarded mundorfs.
so if you have lets say an average quality analog xo and replace it with a digital one you may very well gain sonic benefits.
duomike

duomike May 31, 2011 01:54

I'm using a tact millenium to drive my duos. the tact hast got a sub out which drives via another amp my corner subs. I use xo and eq in the bass channel only. I could use eq on the mid and high also (the millenium can be hooked up via a cable to a computer) and I can change settings like adding a filter almost on the fly when listening to music per mouse click. once i had the idea to set a high pass filter at 100 hz so that the duos midrange does not get the low bass. it worked but sounded really bad. in this case I did not exchange an analog xo for a digital one but I just added a digital one per mouse click way below the duos mid horn cut off. this enabled me to hear the effects of digital eq.
also my amp is flat into 6 ohms. at the duos 16 ohm it sounds too bright. could use the tone control function to cut highs by a db at 20 khz. again this works but even just changing the response slightly is adding quite a bit of digital nasties.. solved the problem by putting a 10 ohm power resistor across my amps binding post so that my amp "sees" roughly a 6 ohm load. not an elegant solution but it sounds a lot better then using even a very small amount of digital eq.
just some food for thought

duomike March 02, 2011 02:26

would like to comment re crossover. using ag omega duos with lyngdorf corner subs.
digital xo has got it's own sonic problems. it's adding quite a bit of what I call digital nasties to the sound. analog xo of course is also far away from being transparent. I replaced the mundorf silver gold in my tweeter xo a few years back with teflon v-caps. the difference is amazing!
herman, if you are using an amp for every channel use xo at the input of each amp, use highest quality parts only. this will sound a lot better than digital xo IMHO
regards
Duomike

duomike March 01, 2011 02:27