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passive xover on the 8" and 1"
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VPAS View Drop Down
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Points: 1203 		Post Options Post Options   Thanks (0) Thanks(0)   Quote VPAS Quote  Post ReplyReply Direct Link To This Post Topic: passive xover on the 8" and 1"
    Posted: 14 May 2008 at 10:32am
anyone help me on the best place to start going about buying or building a crossover for this section of the xtro?

cheers
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darkmatter View Drop Down
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Points: 2419 		Post Options Post Options   Thanks (0) Thanks(0)   Quote darkmatter Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2008 at 3:07pm
Being as no one's posted plots of the impedance, phase or frequency response of drivers in the suggested horns, I guess a measurement mic, finished cab and a copy of speaker workshop would be the place to start if you wanna do it properly...
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Points: 1203 		Post Options Post Options   Thanks (0) Thanks(0)   Quote VPAS Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2008 at 5:12pm
and if you didnt want to doi it properly??

jokes! it seems that one of the major draw backs of the punisher/xtro combo is the sheer power and number of amps needed. it seems to me that a passive for the 8+1 would be a damn sensible idea.

surely from the info that is availiable; cross over freqs, delay and gain structure this could be sorted. ive got the info somewhere, il try and dig it out
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Points: 10932 		Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2008 at 7:39pm
On my Xtro, I've asked for Insomnia to do 2 sets of 4 pole Speakon sockets (and 2 for linking out).

That's so that one of them can simply have the 8" on 1+ 1-, and the 1" on 2+ 2-. Since most decent amps seem to output channel 2 on the second set of pins of the channel 1 speakon, this means I can simply run a 4 core cable to the cabinets and link between the two there.

I'd rather invest in a decent amp that gives more flexibility than try and bodge a passive crossover on a DIY cab.
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Points: 1700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dom Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2008 at 11:12pm
You'll probably find you can get away with just a high pass filter on the 1" as the 8" will drop off like a stone at it's upper end.  Then just parallel it with the 8"
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Toast, can you put some lovely pic's up when they're done?
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Points: 1801 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Wrighty Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2008 at 10:19am
If I get bored one day, I might design a crossover for this. It's likely to be a few weeks though!

Only problem is, I don't have a DE500 to measure. I've got DE250s and 8PE21s though, so I can design something based around the DE250. I'd have to look at the impedance plots to see how much they differ.

Personally, I'd go for the DE250 instead of the DE500 if I was building an X-Tro anyway because they're a lovely sounding driver, 1.5dB more efficient and have a higher power handling.
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Points: 32 		Post Options Post Options   Thanks (0) Thanks(0)   Quote brumie59 Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2008 at 9:44pm
Originally posted by Dom Dom wrote:

You'll probably find you can get away with just a high pass filter on the 1" as the 8" will drop off like a stone at it's upper end.  Then just parallel it with the 8"
 
 
 
 
 Hi mate, this is what I am doing, but the 8'' seems to give horrible distortion when fed with HF, (above about 8kcs), nasty ''splashing sound'',  I was considering using a filter circuit to cut off the Hf?
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