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What is Kenwood sigma drive?

Updated: 11/12/2022
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13y ago

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Almost all amplifiers use "negative feedback" to reduce distortion in the power stage. Sigma Drive uses an extra set of wires to include the speakers in the feedback loop so that the amplifier can use power reserves to ensure the speaker track the signal. Quite effective on bookshelf speaker, up until they reach there maximum power level. Less impressive on really good speakers but at least it seemed to be transparent if it wasn't helping.

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13y ago
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Q: What is Kenwood sigma drive?
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