Home Speaker Asylum

General speaker questions for audio and home theater.

JBL K2

The JBL K3 circa 1993 was battery biased.

Patents prior to 2000 were 17 years, plus, they never received a patent on the circuit either.

Results of Search in US Patent Collection db for:
AN/"harman international": 378 patents.
Hits 351 through 378 out of 378

This would include Infinity in there too, as I believe they had a battery biased speaker in production before JBL did.



Edits: 04/27/11

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