First tower speaker build
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Hello my name is michael i am new to the fourm hoping you wizards can help me out here so ive been doing some reasesrch for a few months now ive picked out my drivers im doing a 3 way tower with drivers listed below. I come from a car audio backround and use dsp so passive crossover are new to me lol, so i guess my question is i see all these people talk about measuring with a mic to get frd or zma im using parts express stuff so i can get the file from them what steps do i need to do in order is it come up with a plan, is it pick your drivers, design enclosure, then design the crossover , then test or what im confused on what i do with the mic is it before i build the crossover or after and if its before what audio would i play through it a test pattern? Will this damage the speaker with no crossover? Hopefully some one can help thank you guys in advance!
If anyone has better options please let me know as i ak still learning.
Midrange- https://www.parts-express.com/Dayton-Audio-PC105-8-4-Full-Range-Poly-Cone-Driver-295-160?quantity=1
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Welcome! 🧙‍♂️ this is really exciting. Your first speaker project is always the most fun. Mainly because you learn a lot on your first build.
Typically what most people will do is they will design the enclosure first. Since yours is going to be a three-way, you would end up with two separate enclosures, one enclosure that houses, the mid range, and one enclosure that houses the woofer. The tweeter, since it’s sealed, is already technically in its own enclosure.
Once you have the enclosure designed, you’re going to want to take your frequency response measurements. This is where you need the microphone. not only do you want the frequency response but you also need to get your offset so that you can get your drivers in phase.
Microphone isn’t the only thing you need though. You also will need Dats. And you’ll need to get your FRD files.
We would be happy to walk you through that as you go along. You’ll just need to make sure that you have the equipment. As far as what microphone to use, you can use any microphone that is calibrated. The only thing you want to make sure is that you can keep the microphone in the same spot while taking measurements. Parts Express has a really cheap one that can plug up to your phone or the computer. Otherwise some people will use the Umik-1 or Omnimic. Really a lot of this comes down to how much you want to spend and how often you’re going to use it. If you’re just going to use it for this one, then you could probably go with a pretty inexpensive Microphone.
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Awesome thank you so much for the reply i really apprciate it, when the time comes i will make sure and make another post on here but i did have a few questions once my enclosure is designed and i go to take my frequency response measurements will i have to have crossovers built and hooked up yet or do i just put the speakers in with no crossovers and test with the mic, Also when im testing is it a test tone it plays or a movie of some sort and is it hooked up to my 2ch amp when testing or does it need 1w of power. again thank you so much for the help!
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@Michaelt124 You cannot properly design the crossover without the measurements in the enclosure first. In a very rough order
1. Buy the drivers
2. Design the Enclosure
3. Build the enclosure
4. Take measurements for Impedance and Response
5. Design the crossover
6. Test the crossover/modify
7. Finalize Crossover
8. Finish
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