Audio – Page 2 – Clockworks Signal Processing

Power resistors for amp testing

Feb 5, 2018LostBitsAudio, Testingamplifiers, papers

In the past only relative low power loads have been needed for the evaluation of monolithic class D amp chips as they are typically 25 watts and under. Now working with some 200W (8 ohms) – 400W (4 ohms) amps and beefier load resistors are needed. The following little parts are now on the bench:

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The sound of noise

Jan 16, 2018LostBitsAudio, Audio Builders Workshop, Design, Hardware

As part of an ongoing investigation in to excess noise (also called 1/f noise) from resistors I recorded some data taken with the AP515 and posting it here. All 3 tracks have 80 dB of gain added to them using Audacity. The actual signal level from the resistor is a few microvolts. The part being […]