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Old 27th January 2004, 11:47 PM   #1
dladow is offline dladow  United States
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Location: Renton, Washington
Default bridging cd head unit and stereo to mono

Two basic questions, but first the background.

I am rebuilding a 1973 240z. Not much room for gear, so I am going minimalist with a simple 4 channel CD head unit (they only seem to come with four channels) and two Focal 6x9 speakers in the base of the rear hatch facing forward.

1. Since I will only have two speakers, is it possible to bridge the 4 channel output of the head unit into two channels, thereby increasing output? If so, what is the best way to do this? Is these going to screw up the impedence to the speakers? What if I just run both right channel speaker wires to the same right speaker?

2. With only two speakers in back of me, stereo imaging will not be good. So, my thinking was to just go mono. Is there simple way of combining the stereo signal from the two speaker wires into a mono signal to be fed to both speakers?
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Old 28th January 2004, 03:09 PM   #2
Immo_G is offline Immo_G  Australia
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Headunits are already bridged, thats how they get 50-60 watts (about 20 rms) from the cars voltage.
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Old 28th January 2004, 03:17 PM   #3
JCoffey is offline JCoffey  United States
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As far as I know, no HU can be bridged. You'll end up frying it in the end....
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Old 28th January 2004, 09:19 PM   #4
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the power on HU`s is higher with 2ch than in 4ch.
you can`t bridge them.
but i setup a 240 once.mounted 2 6x9`s in the floor behind the seats and mb 4" componets in the door with the tweet`s turn forward.got a good image.
just a thought.
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