You can combine two channels into one, but you can't combine four channels into one. The best you can do is bridge it down to two channels.
Can you tell me how
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SOURCE: how do you bridge an Alpine PDX amp
you have 2 + and 2- right? twine both speaker wires together. like + to + and - to - and then pick only 1+ and 1- to hook up and then you should double the power to the speakers only
SOURCE: Power Acoustik Area 51 Amplifier
Make sure your sub is wired in bridged mode also and not to an ohm load that is too small for your amp to take. Such as a 1 ohm load or a .5 ohm load. A great way to figure this out is to go to Crutchfield and find their section on subwoofer wiring diagrams. Another good source is www.the12volt.com which also will show you all options. you must be presenting a 4 ohm load from your sub to the amp because it's smallest impedence is 2 ohm stable. Then you bridge at the amp which is 2 ohms to each channel you are trying to bridge.
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SOURCE: Alpine mrp-350 amp
1) If you bridge on a non bridged amp your sound will be horrible as they sine waves comming out of the two teminals will be different... I suggest removing the bridge. 2) The gain knob is to adjust when the amp will reach its max volume with respect to the sterio;s volume. 3) the LP filter is a Low Pass filter and its purpose is to eliminate the higher frequencies that do not sound all the well when played over subwoofers.
SOURCE: bridge a two channel amp
i the search bar type in....subwoofer wiring diagram....then go to crutchfield and it shows you your options.......
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