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I've been doing some reading on pre-in and pre-out's and I think I'm still failing to understand exactly what I am reading. My ONKYO TX-SR308 is a 5.1 , but is it correct that it really only provides the 65 watts per channel to the fronts, center, and rears? There isn't a place to connect speaker wires for the sub. Am I getting anything at all from the sub by connecting it to the pre-out only or do I need a separate amp?


Thanks,


Tony
 

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Thats correct. A preout is a line level (unamplified) signal and thats all any modern receiver will provide for a subwoofer. Luckily, until you get into DIY or decently high end subs, any sub you buy will have its own amplifier built into it. You'll simply connect a single rca ended cable from the sub preout on the receiver, to the input on the back of the sub. (Of course, you'll also need to plug the sub into a wall outlet to provide power, and adjust it's volume, etc. But the single rca cable is all you'll need to do in the way of signal)
 
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