Amplifier & filter testing

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Audio amplifier & filter testing
People do audio testing with different softwares & hardwares. I want to know about the experience of members. To test frequency response of amplifier in real time from 20-20khz in one sweep which method they r using? Also to tune the filters & check the rolloff with sweep. Further which equipment/software is the reasonably good & cost effective.
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.