I need help on my crossover design
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Hello there,
I am currently making my very first 2-way speaker and I need some feedback on my crossover design. I currently have a 107db tweeter (Exit Bolt-On 8 Ohm Compression Driver Ryman 1017S) and a 97db woofer (Faitalpro 10FH520). Both have a 8 ohm impendance.
Because these drivers have a pretty high power output and I would like to use resistors to attenuate the tweeter, I came up with a crossover design where I use 4 20W resistors in parralel after the capacitor in Xsim (see picture in link).
By doing this I was able to keep the power output of the drivers and resistors under their maximum. I however am not sure if this will work since this is the first time I’m designing a crossover. Can someone confirm or dissaprove this design?
If there are any other improvements to be made on my crossover design, I would love to hear it.Thanks in advance,
Glen
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@Glen Your resistors look to be doing what you want them to. So in that case they look alright. My main concern is your inductor on your woofer. It appears to be really low in value. Are tehse from measurements or from a comapnies supplied graphs? I only ask because that seems off jsut by looking at it.
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Hey,
I checked again to make sure I used the right graphs (they were provided by the origional company). I think the low value on the inductor might have something to do with the natural steep drop-off this woofer has around 2000 hz (see picture) but I’m not sure.
link to picture: https://imgur.com/a/K4IZ9SV -
@Glen if you are using the manufacturers graphs then you are not accounting for baffle step loss. That is why you are using such a low inductor. If you built it with that inductor the speaker would lack low end.
The best thing to do is measure the driver in the box with a cheap claibrated microphone. If that is not an option you can guesstimate the bafflestep based off the size of the box. But this is really just a guess. I will do this before purchasing a driver jsut to get an idea of how easy or hard it might be to work with.
Either way, your prliminary inductor is too low.
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