Active Loudspeakers vs. Passive Loudspeakers Note, however, that the reversibility principle poses a limitation: the speaker must be passive (unpowered), without amplifier transitions. In the case of an active (self-powered) speaker, there is an amplifier between the jack and the speaker, hence the signal won't be passed from the output to the input side [6]. Since most modern loudspeakers have an internal amplifier [7], the threat presented in this paper is primarily relevant to headphones and earphones, and not to the loudspeakers typically connected to a PC.
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So... laptop speakers may be less of a threat than your earpods. Still... (Makes me glad my headphones are active-amplified Bose w/ no passthrough.)
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Re: Disappointed in stark contrast between this post and normally high quality of other posts
Date: 2017-03-11 06:36 pm (UTC)Active Loudspeakers vs. Passive Loudspeakers
Note, however, that the reversibility principle poses a limitation: the speaker must be passive (unpowered), without amplifier transitions. In the case of an active (self-powered) speaker, there is an amplifier between the jack and the speaker, hence the signal won't be passed from the output to the input side [6]. Since most modern loudspeakers have an internal amplifier [7], the threat presented in this paper is primarily relevant to headphones and earphones, and not to the loudspeakers typically connected to a PC.
______________
So... laptop speakers may be less of a threat than your earpods. Still... (Makes me glad my headphones are active-amplified Bose w/ no passthrough.)