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NC2K with SMSP3KA700 Measurements

orchardaudio

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I had a local DIY customer let me borrow an NC2K with an SMSPS3KA700 combination. In this configuration, there is no input buffer the audio goes directly into the NC2K's input.

Here are the measurements that I was able to take. Please see the legend to see what color represents what amplifier as I had measurements of multiple amplifiers that I added for comparison.

20240305_102500.jpg



8-ohm load measurements


THD+N Ratio vs Measured Level 1kHz (22.4kHz BW) - 8ohm.jpg



THD+N Ratio @10W (22.4kHz BW) - 8ohm.jpg


IMD SMPTE Ratio vs Measured Level (22.4kHz BW) - 8ohm.jpg


4-ohm load measurements

IMD SMPTE Ratio vs Measured Level (22.4kHz BW) - 4ohm.jpg



THD+N Ratio @10W (22.4kHz BW) - 4ohm.jpg



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  • IMD SMPTE Ratio vs Measured Level (22.4kHz BW) - 4ohm.jpg
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MaxwellsEq

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Thanks! An interesting comparison with the older technology amplifiers which are showing their age.
 

NTK

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