MiniDSP UMIK-1. How do i use it for measuring sensitivity and other things.

[callum450]

So I'm Buying a this mic as i need to make frequently response of 2 woofers that I'm going to use for a 3 way build I'm doing.

So i need a 1watt output of i think pink noise at a distance of 1 meter.
Can the Dayton audio DATS do this as i have one on the way. ( the 12in woofers I'm using don't have a spec sheet anywhere as there from 2001)

what is the proper way of measuring frequently response. is it the same 1 meter away at 1 watt?

and how do i import that data into a software like Xsim (every video i watched kinda just skips past it).

and what programs you you guys recommend for box and crossover calculation.

and here is the link to the other post on the speakers that I'm building (HERE)

just a short list of what im going to use
Vifa d27, peerless SDS-P830657 6½ and 2x Vifa M30wo-15 (and ovs x2 as that's just one speaker)

idk what the sensitivity is for the Vifa M30wo-15 the closest spec sheet said 93DB

Any help would be largely appreciated.

 

[AllenB]

Rather than work out the sensitivity, which is not so helpful and not so easy to do.. measure all parts of your speaker so you have their relative sensitivity to work with. Don't worry about 1W, choose a good level that doesn't distort or fall into the noise, and use the same for all measurements between your different drivers in place.

Convert measurements to *.frd files for Xsim.

 

[callum450]

ya but the woofers are 4 ohm and mids are 8 ohms

iam going to use two woofers per side in series to make 8ohms and i don't think sensitivity changes i know that if it was parallel it was double so +3DB
is that logic right?

Rather than work out the sensitivity, which is not so helpful and not so easy to do.. measure all parts of your speaker so you have their relative sensitivity to work with. Don't worry about 1W, choose a good level that doesn't distort or fall into the noise, and use the same for all measurements between your different drivers in place.

Convert measurements to *.frd files for Xsim.

if the woofer is 4 ohms then would the amp push out more power and the measurements be off?

 

[AllenB]

two woofers per side in series to make 8ohms and i don't think sensitivity changes

Yes that's right. You may see directivity changes, but the response in between them is the same as only one.

ya but the woofers are 4 ohm and mids are 8 ohms

Another factor that is not important.

if the woofer is 4 ohms then would the amp push out more power and the measurements be off?

Just use the same level for each, that's the same Voltage, the same volume control setting.

 

[callum450]

Just use the same level for each, that's the same Voltage, the same volume control setting.

do you know if the Dayton DAT has a fix output as other then that i just got an old amp lying around