I will be using either a 12" XLS or a 12" XXLS sub with a 12" Passive radiator. The design notes call for a high pass filter at 17hz to keep the excursion withing safe limits. Has anyone designed an active crossover for this before and what would I need to do to modify it for balanced connections. Do I just build two of them, then???? While I'm at it building active crossovers where can I learn how to so I can customize the low pass as well. I allready looked at the Behrenger DCX2496 and the DBX and neither can be programed for sub 20hz use.
BTW The new XXLS subs are on order to Madisound and the price seemed quite reasonable at 152 for the 12" 830844, but he said he's waiting for a possible price increase becasue the doller is going the way of the peso. I was a republican until our current administration..... Oh well...
It looks like I needs to dun do me some book lernin on active xovers.
BTW The new XXLS subs are on order to Madisound and the price seemed quite reasonable at 152 for the 12" 830844, but he said he's waiting for a possible price increase becasue the doller is going the way of the peso. I was a republican until our current administration..... Oh well...
It looks like I needs to dun do me some book lernin on active xovers.
Why not limiting at 20Hz . You're not able to hear below 20Hz anyway.
And the behringer has dynamic eq's that - as you know - well operate in this range.
And the behringer has dynamic eq's that - as you know - well operate in this range.
Using the behrenger
If I set the behrenger to 20 hz it assumes that the crossover point is at 20 and being the taper at the 30-40 range and that makes a subwoofer kind of pointless since the mains will extend to 35 on their own. I also need another low pass in that same range and the two wouldn't sum to anywhere near what I need.
If I set the behrenger to 20 hz it assumes that the crossover point is at 20 and being the taper at the 30-40 range and that makes a subwoofer kind of pointless since the mains will extend to 35 on their own. I also need another low pass in that same range and the two wouldn't sum to anywhere near what I need.
What about a subsonic filter? There are many pro mic-preamps and other gear that offer subsonic filtering (ie: 20Hz and below). Perhaps this would be a viable option and you could easily stay with your balanced connection scheme.
Use the Behringer set to 20 Hz, you won't know the difference. You're right about the sub not being necessary if your mains run to 35Hz, so don't. Cross over at 60 to 80 Hz and take some load off the main speakers and amp.
mp006ltk said:
Then ask the government to build you one...
Check out linkwitz's site, he's got a lot of crossover discussion and circuits. A dipole sub often needs that same sort of excursion limiting.
Sheldon
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