Macrotech I or I-tech
Posted 18 April 2012 - 06:28 AM
Link to a 13 page tech document about line arrays, it gives a good explanation about the high frequencies comb filtering (the cancellation and boost effect) but it is the same for your low frequencies question, the reason for it is different, on the high frequencies using the same speakers comb filtering occurs due to speaker placement and room acoustics, on your system the comb filtering occurs due to the difference in frequency response of different speakers (725 Vs 728s) and that overlap in the crossover frequency you wanted to do.
There is no way to eliminate the comb filter effect in the crossover zone (+/- one octave), but we hope it's minimal.
Posted 20 April 2012 - 01:20 AM
And another thing, is there any app so I can easily find out monitor feedback frequencies precisely?
If you need to handle feedbak, why not use one of those automatic units:
Posted 12 May 2012 - 02:58 PM
Posted 13 June 2012 - 08:14 AM
Posted 13 June 2012 - 08:28 AM
Do you mean speakers designed as lamps or lamp in speaker crossover? Can you give me a link to a specific product?
Posted 13 June 2012 - 09:14 AM
Posted 13 June 2012 - 10:15 AM
Look at this thread, especially the replies by Andy Wehmeyer (from JBL) for the posetive and negative aspects of bulbs in crossovers.
The SRX are much more robust but what happended with the MRX setup? did you blew a HF driver?
Posted 13 June 2012 - 12:18 PM
Posted 13 June 2012 - 12:58 PM
That's not good, most probable reason is clipping somewhere in the sound chain, other than that it could be too much power going to the speakers, a faulty amp could do this as well. You didn't hear any distortion? Is it a bi/triamp system? What amp is powering them?
Posted 13 June 2012 - 01:53 PM
Posted 13 June 2012 - 04:20 PM
Well, if both drivers were fried by the same amp then that raises my suspicion about this amp being as healthy as it should. 1100W amp should be working really hard to be able to fry this speaker unless it was clipping, did you feed it a full range signal (much easier to clip the amp) or was it working with subs? Then again, if the EV survived then it might not be the amps fault.
I think more experienced people are needed here, are you registered on PSW forum? soundforums.net? You want me to open a thread for you?
Posted 13 June 2012 - 05:35 PM