EEVblog #1128 - Studio Monitor Speaker Noise - Part 2

Follow-up to the Studio Monitor Noise video, replacing the mains power supply with a battery supply. Does the noise floor go away?

Part 1: https://www.youtube.com/watch?v=_k5MrB99lpU

Forum: http://www.eevblog.com/forum/blog/eevblog-1127-studio-monitor-speaker-noise-part-2/

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