Electrical guru's need your help

[Roh92cp]

This may be simple for some but for me I'm at a road block. My new head unit only has one channel sub woofer output (one RCA only). My Rockford Fosgate single 10" powered sub box has 2 RCA inputs or 2 speaker line inputs 4 wire. How do I connect this without losing any signal strength and or amp output?

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[scott_0]

take your choice on which channel you connect the rca cable too, if it makes you feel better, you could get rca y adaptor to connect to both channels, but it's not necessary

 

[brandonsmash]

The subwoofer is mono, and you'll get the same low end from either channel; there's really no reason to image sound at that frequency range. Use either one, it won't matter.

 

[Roh92cp]

So what your saying is since the amps right and left channels are wired inside mono to one speaker then a single sub channel input to the amp will still give full power to the single sub?

I'm confused, why then don't they just have one input then if 2 channels are not needed to run one speaker?

 

[mumbles]

So what your saying is since the amps right and left channels are wired inside mono to one speaker then a single sub channel input to the amp will still give full power to the single sub?

I'm confused, why then don't they just have one input then if 2 channels are not needed to run one speaker?

Head units typically have stereo RCA outputs hence the stereo RCA inputs on the sub amp, but you can definitely run a mono signal to the amp and be just fine.

 

[rambunctious]

If you get a Y adapter you can sum the signal in the amp and increase output by 3dB., you can use less gain on the amp now for the same volume, ( better signal to noise ratio this way)

Ramb

 

[brandonsmash]

To expound on this, you're not really carrying power on the RCA cable. If your sub is a powered subwoofer you're getting power externally and the RCA cable is just carrying signal at a given level.

Stereo hookups are useful for imaging but that's not really an issue with a subwoofer as generally bass signals will be carried on both L and R channels.

 

[Roh92cp]

Thanks a lot guy

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