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RE: Has anyone ever used a Rhode and Schwarz audio analyzer?

Posted by Triode_Kingdom (A) on March 18, 2015 at 06:14:51

In Reply to: RE: Has anyone ever used a Rhode and Schwarz audio analyzer? posted by Michael Samra on March 17, 2015 at 22:35:21:

"With the PC it's a PITA when you want to check power because you have to pad it because most sound cards only take 2 to 2.5v input."

Michael, nothing could be easier. My interface box uses a simple 100k dual pot for this. I just turn it until the card has a useable input level. The card will accept up to 4V rms, so anything under 2W/8ohm is essentially a direct connection anyway. At higher levels, I just turn down the pot. I can also test high-swing driver performance at the grid of a power tube using a 10:1 scope probe. Really, it's all extremely quick and much less time consuming than many of the distortion analyzers I've used in the past.

"who measures IMD anymore?" Lots of people, including me. IMD doesn't always follow THD. It's an important test if you want the whole story about an amplifier's electrical performance.

Now, if you said the Roadie could measure TIM, I'd be sold. Otherwise, it's just another bench warmer. :)

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