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Multi-Way Conventional loudspeakers with crossovers

Need Help Determining Frequency X-Over!!
Need Help Determining Frequency X-Over!!
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Old 13th February 2018, 09:32 AM   #1
Gurkha is offline Gurkha  Canada
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Default Need Help Determining Frequency X-Over!!

Good morning or evening everyone!

Everything was going smooth until I started looking into cross-overs. Is it just me or is info hard to come by for this particular part of DIY speaker building? I feel like I know less now than when I started off, LOL!!!

I originally wanted to make a 3 way system. But after looking into it I said maybe a 2 way is the best way to start. How do I know at which frequency point to divide the signal? I got the formulas, I understand the electronics behind it.

Can anyone explain how to find/choose that x-over point, or recommend a good link or book that can describes how to figure it out ?

Please and thank you.
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Old 13th February 2018, 06:36 PM   #2
PeteMcK is offline PeteMcK
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Look at the Freq response graphs of your candidate drivers, so you know what they're capable of....
Decide your baffle step frequency (determines/ is determined by width of your box)
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Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
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Old 13th February 2018, 06:49 PM   #3
5th element is offline 5th element  United Kingdom
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And the formulas won't help you much. They are a starting point, but usually are a very BAD starting point. These are for textbook filters that work into textbook loads with textbook frequency responses, none of which an actual loudspeaker has.
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What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Now with website! www.5een.co.uk under construction.
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Old 13th February 2018, 08:41 PM   #4
jimbro is offline jimbro  United States
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Need Help Determining Frequency X-Over!!
Here's a short discussion that may interest you Crossovers
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Old 13th February 2018, 08:44 PM   #5
jimbro is offline jimbro  United States
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Need Help Determining Frequency X-Over!!
Some more for you Zaph|Audio
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Old 13th February 2018, 08:48 PM   #6
jimbro is offline jimbro  United States
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Need Help Determining Frequency X-Over!!
CURT'S SPEAKERBUILDING PAGES
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Old 13th February 2018, 08:50 PM   #7
jimbro is offline jimbro  United States
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Need Help Determining Frequency X-Over!!
Introduction to designing crossovers without measurement
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Old 14th February 2018, 09:47 AM   #8
Gurkha is offline Gurkha  Canada
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1st wow: Thanks for all the info everyone!! I really appreciate all the help. No one around me does anything like this so I can't have a discussion with anyone about it.

2nd wow: Looks like I got more studying to do!!!
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Old 14th February 2018, 03:58 PM   #9
jimbro is offline jimbro  United States
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Need Help Determining Frequency X-Over!!
Forgot about this one Passive Crossover Network Design Ready to visit the full range forum?
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