Easy ZMA and T/S Parameters Using The LIMP Module in ARTA - An Illustrated Guide

[blindsquirrel]

Apologies. I am very literal and don't deal well with ambiguity. So when I see one statement that says:
Note: Do not connect your speaker driver to the jig during the calibration process.
...and another one that says:
Connect left and right input channel to signal generator output!
...those seem to be saying different things. Everything is simple and obvious once you understand it.

And thank you for assuming I'm a moron who didn't even attempt to read the thread before asking moron questions.

[hongrn]

Slow down. This is a hobby that is supposed to have a calming effect on the mind. No one is calling you names, or even thinking of you as such.

[Hipocrates]

This is Awesome, many thanks!

[Kornbread]

Is this wired correctly to test impedance? The binding posts from the limp module attach at the same point as the amp to the speaker lugs?

[hongrn]

You don't need the amp to test for impedance, so your set up should look like this:

[Kornbread]

Just a heads up if you bought a Behringer uca222 to take measurements with ARTA or REW. It's not really plug n play. At least not in my case. I let the uca222 install whatever drivers/software it installed, and it worked, or so I thought, really it only partially worked (only driver available was wmd), so I went to the Behringer site and the listed driver for the uca222 was ASIO4ALL. Downloaded and installed that with the same results. You will need the Behringer 2902 2.8.40 driver for the uca222 to work properly with ARTA or REW.

Also, take a look at these measurements. Both ARTA and REW produced almost identical impedance sweeps of the FaitalPro 5fe120 and Vifa xt25. Why is the impedance rising in the bass?

[filmslayer]

does the resistors wattage matter ?

[hongrn]

I use a 2 watt 1% tolerance resistor in mine without issues. I don't know if higher wattage matters.

[filmslayer]

thanks Hong . it just got me wondering . there is not much cost difference a 10w is only $ .98 .

[blanca12]

Nice, thank you Hong
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