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Multi-Way Conventional loudspeakers with crossovers

need help with measuring
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Old 7th December 2018, 04:53 PM   #1
3wayaddict is offline 3wayaddict  Netherlands
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Default need help with measuring

Hello,

I want to make measurements of my speaker with REW on Mac with a MiniDSP UMIK-1 but I have no idea how it works and can't get it to work. Can you please guide me through?

Sven
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Old 7th December 2018, 05:52 PM   #2
RobWells is offline RobWells  United Kingdom
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Old 8th December 2018, 10:47 AM   #3
3wayaddict is offline 3wayaddict  Netherlands
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I'm following the guidelines but it keeps giving an error saying: "The sound card did not provide any input data, please make sure it is connected". But it sure is connected. What do I do?
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Old 8th December 2018, 10:54 AM   #4
Lojzek is offline Lojzek  Croatia
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First thing would be to measure the sound card itself, line in to line out and measure the FR of it. Check the sound mixer as well if all the line level in/outs are present and not muted.


edit: Wait, is this the mic with sound card integrated?
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Old 8th December 2018, 12:01 PM   #5
3wayaddict is offline 3wayaddict  Netherlands
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It's a UMIK-1 USB microphone with integrated sound card. I does somehow let me make measurements suddenly but it doesn't work correctly yet. The "SPL & Phase" graphs are unrealistically rugged yet the "All SPL" graphs are impossibly flat. And I don't think my sealed cabs go to 10 Hz flat and suddenly decline. And making changes tot speakers crossovers doesn't make a difference either.
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Old 8th December 2018, 02:06 PM   #6
BYRTT is offline BYRTT  Denmark
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need help with measuring
About handling REW suggest use "Help" menu and some patience should get you going or else google for some video toturials.

About UMIK-1 it is so that its locked as a 48kHz samplerate soundcard well at least mine is, therefor you want your OS (operating system) to also set internal soundcard to same 48kHz samplerate and into REW "Preferences/Soundcard" use same 48kHz setting, myself is on other OS so know nothing of how to do it on Mac but to get phase graphs right in measurements you need I/O-devices/OS/REW set to same rates.
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Old 8th December 2018, 02:09 PM   #7
Pano is offline Pano  United States
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need help with measuring
Are you able to correctly choose the output and input cards? The UMIK being the input card. I've had trouble with some gear, even choosing correctly. I believe it was driver problems.
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Old 8th December 2018, 02:42 PM   #8
3wayaddict is offline 3wayaddict  Netherlands
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I think so yeah. I'll just send a picture of all my settings. Maybe you can see what I'm doing wrong.
Attached Images
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Old 8th December 2018, 09:08 PM   #9
3wayaddict is offline 3wayaddict  Netherlands
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I have watched several tutorials and did exactly what you're supposed to do but it just won't work. It keeps giving dead-flat SPL graphs and N shaped and clipping Phase & SPL graphs. I don't understand what's going wrong.
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Old 8th December 2018, 09:51 PM   #10
Bicicletta is offline Bicicletta
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What using the RTA tool? That seems a sort of saturation. But the thumbnails seem OK.
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