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slaz View Drop Down
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Joined: 27 November 2009
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Points: 2731 		Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2012 at 8:45am
Hope its not too much of a thread-jack ....

I've seen plenty of reference designs/calculators for passive Xovers around the place, but don't think I've seen any that cater for mixed driver impedances .... (although I haven't yet scoured around that much).

I'm likely to need a design for integrating a 4 ohm mid/bass driver with a small compression driver or possibly bullet (which is almost certainly gonna be 8 ohms) .... anyone have circuits/calculators for this ?

TIA.
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audiomik View Drop Down
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Points: 2956 		Post Options Post Options   Thanks (0) Thanks(0)   Quote audiomik Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2012 at 9:27am
Slaz
this link might be of use: http://www.colomar.com/Shavano/crossover12db.html

otherwise some of the online Xover calculators ask for the impedance of each load to be entered

In both instances, expect to have to do some 'tweaking' of values for best results
Mik
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slaz View Drop Down
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Joined: 27 November 2009
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Points: 2731 		Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2012 at 9:47am
Originally posted by audiomik audiomik wrote:

Slaz
this link might be of use: http://www.colomar.com/Shavano/crossover12db.html

otherwise some of the online Xover calculators ask for the impedance of each load to be entered

In both instances, expect to have to do some 'tweaking' of values for best results
Mik


Thanks Mik .... will have a proper gander later ....
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djtuffer View Drop Down
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Points: 741 		Post Options Post Options   Thanks (0) Thanks(0)   Quote djtuffer Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2012 at 12:14pm
I have found that these crossover calculators don't realy work.  You have to spend a lot of money on pro stuff like LEAP before you can get simulations that get close to reality.  Trial and error is the best way in my opinion.

Edited by djtuffer - 05 August 2012 at 2:50pm
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ceharden View Drop Down
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Points: 11851 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2012 at 12:42pm
The majority of crossover calculators will only give 'ideal' values, assuming flat frequency and impedance responses for the drivers etc.  You can use them as a starting point providing you take the other factors into account.
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