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Old 04-13-2014, 12:00 PM   #6467 (permalink)
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Controller noise

I listened to the spread spectrum 'white noise' that Paul posted.

- does NOT sound like a Kelly DC controller, or a Curtis DC controller
- does NOT have the AC 'whine' at low speeds that industrial AC controllers typically have (2 Khz - 10 Khz carrier with ... apparently .. no randomize algorithmn). The typical AC 'whine' is most annoying IMHO below 20% speed.

Possible Minus:
- may be audible at low speeds ... but I've never heard car noises at low speed (without the ICE engine noises) so the car may be louder than I realize

- if it *REALLY* annoys me that much ... I can CHANGE IT!
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MPaulHolmes (04-14-2014)