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 Post subject: Does this work
PostPosted: December 22nd, 2019, 10:25 am 
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Location: Baltimore MD
https://www.psaudio.com/pauls-posts/4-channel-audio/


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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 2:51 pm 
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Pelliott321 wrote:


Yes -- in a way. Hafler sold a box that would route the ambient information on a recording to rear speakers. It was not true four channel but it would create an open acoustic within the listening area. Carver did something different with his Carver Hologram Generator that would play games with the front speakers.

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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 4:02 pm 
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thanks walt


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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 4:06 pm 
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In late 80s/early 90s, there was a car audio full range speaker box that used "tri-mode", which I think was just using a single dual terminal woofer with one terminal going to the left box input terminals (and the horn/tweeter/midrange/etc) and the the other to the right. Mono lows/stereo highs.

There was also a tri-mode passive crossover that accomplished the same thing outside of a box.

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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 4:08 pm 
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Wait. Back speakers out of phase?

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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 6:06 pm 
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Pelliott321 wrote:
thanks walt


You're welcome! I played with both in the far distant past.

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 Post subject: Re: Does this work
PostPosted: December 22nd, 2019, 6:07 pm 
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Joined: April 4th, 2016, 4:07 pm
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It’s not out of phase. It’s a difference signal- left minus right.


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 Post subject: Re: Does this work
PostPosted: December 23rd, 2019, 1:44 am 
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Will this work on any amplifier? Do the speaker pairs have to be the same or similar?

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