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Old 14th November 2003, 10:45 AM   #1
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Default Loudspeaker Filter Formula's

Hi

I have plans to program a loudspeaker filter calculator for free online use on my website.

Anyone know a good source for the theoretical formula's?

All the best from Denmark!
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Old 14th November 2003, 11:43 AM   #2
sonnya is online now sonnya  Denmark
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I think this link is good.

http://www.diysubwoofers.org/
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Old 14th November 2003, 04:00 PM   #3
Ron E is offline Ron E  United States
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Try:
Need help on x-over formula

Enjoy
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Old 15th November 2003, 10:32 AM   #4
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try here if you like

http://hyperphysics.phy-astr.gsu.edu.../cross.html#c1
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Old 17th November 2003, 10:23 PM   #5
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Thanks a lot you guys, i programmed the calculator based on your informations.

You can try the calculator here:

http://www.lcaudio.dk/com/passivexover.htm

Hopefully it gives correct results otherwise please let me know.

All the best!
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Old 17th November 2003, 11:40 PM   #6
Vigier is offline Vigier  Netherlands
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Hi Lars,

do you mind if I give my comments?

- the pictures I get when everything is calculated, I think they can be better? Maybe I'm going to far with this, but I see a lot of dots above and under the lines, and around the capacitors etc. (And when I compare it to other pictures on your website, they look better)
- I NEVER use the DC-resistance of the unit to calculate the crossover. It's very important that you use the impedance of the unit at the frequency you want to calculate the crossover for. If the impedancecurve isn't a straight line, and it never is, then you can't use the DC-resistance (the problems are around the impedance peaks you see in the lower frequencies and the impedance curves are going up when the frequency gets higher because of the inductance of the voicecoil.)

Maybe there comments are overdone, but I just wanted to say it

About the rest of your website: damn, I like the designs, especially the End Millennium amp!!!!

Grtz, Joris
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Old 18th November 2003, 06:44 AM   #7
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Exclamation Loudspeaker Crossover Design Formulas

Most loudspeaker crossover design formulas prove to be wrong when put to test in a simulator program like Microcap.......
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Old 18th November 2003, 07:37 AM   #8
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Default Re: Loudspeaker Crossover Design Formulas

Quote:
Originally posted by Elso Kwak
Most loudspeaker crossover design formulas prove to be wrong when put to test in a simulator program like Microcap.......
But you have to have a starting point to optimize, in that case the equations mentioned will come in handy.
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Old 18th November 2003, 07:47 AM   #9
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Thumbs down Re: Re: Loudspeaker Crossover Design Formulas

Quote:
Originally posted by LaMa


But you have to have a starting point to optimize, in that case the equations mentioned will come in handy.
Hi LaMa,
I don't think so. You have the wrong starting point to begin with.
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Old 18th November 2003, 03:54 PM   #10
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ELSO what would you suggest as the better solution?
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