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02: Home Entertainment, Page 125.
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Subscribers—read this article now in your digital edition!A simple wiring trick derives center channels.
From the column DIY: Home Entertainment
MAKE: Noise — Discuss this article
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- Not quite 2.1 sound
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It should be noted that this configuration though it does add a center channel, will subsequently cancel out any mono sounds on that speaker.
Basically what you'd get is L-R, or left minus right (or vice versa, depending on which way the center speaker is polarized).
The best example is hearing music but not the vocals on the center speaker.
Or with completely mono material the center speaker would in turn reproduce little or nothing.
The other drawback is it will create a 'dead' zone in the room where the left (or right, depending on polarity) channel audio will be significantly quieter or odd sounding.
A slightly better option would be to hook the center speaker between left+ and right- with a 8 ohm resistor in series.
This however will only work with balanced output amps... Otherwise you'd just get the left channel.
It's certainly an interesting trick, but
the best way to create a center channel is with a 3rd amplifier.
Posted by frogtumor on July 19, 2005 at 23:24:04 Pacific Time
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