The amplifier under test is fed with a large low-frequency sine-wave input on which 50us pulses of alternate polarity are superimposed. These pulses drive the amplifier's protection circuits into current-limiting, and the set-up gives a CRT presentation having current-limit values vertically and instantaneous output voltage horizontally. The displays obtained, which sometimes disclose unsuspected amplifier design faults, are compared with those derived in tests made on loudspeakers using programme and other inputs.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.