First time with ARTA - am I set up correctly for amp measurment?

NYCOne · 24th July 2011, 03:49 AM

I'm just starting to use PC base tools. I picked ARTA to try first. I want to measure THD, etc in my preamp and amp.

I built the measurement box as seen at:

HiFi Measurement

My question is this: If I want to measure my amp, I don't need the speaker and mic hookup correct? I just take line out to the amp being measured, then connect the output of the amp to the measurement box (has a voltage divider), and connect the output of the box to the line in of the computer. Then generate noise and get the THD measurements?

NYCOne · 7th August 2011, 07:01 PM

bump

Pano · 7th August 2011, 07:05 PM

Yes. But you should use a dummy load on the amp. 8 ohms or whatever your normal load.
You can also measure with the loudspeaker as a load, to see the differences.

24th July 2011, 03:49 AM	#1
NYCOne diyAudio Member Join Date: Jul 2010 Blog Entries: 1	First time with ARTA - am I set up correctly for amp measurment? I'm just starting to use PC base tools. I picked ARTA to try first. I want to measure THD, etc in my preamp and amp. I built the measurement box as seen at: HiFi Measurement My question is this: If I want to measure my amp, I don't need the speaker and mic hookup correct? I just take line out to the amp being measured, then connect the output of the amp to the measurement box (has a voltage divider), and connect the output of the box to the line in of the computer. Then generate noise and get the THD measurements?

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7th August 2011, 07:01 PM	#2
NYCOne diyAudio Member Join Date: Jul 2010 Blog Entries: 1	bump

7th August 2011, 07:05 PM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Yes. But you should use a dummy load on the amp. 8 ohms or whatever your normal load. You can also measure with the loudspeaker as a load, to see the differences.

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