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Why does my subwoofer not work unless I use Bass Redirection?

post #1 of 5
Thread Starter 
This is all hooked up to a computer with a X-Fi sound card.

I have quite of odd setup I got going on here. I have a analog 5.1 receiver with sub-woofer pre-out. I have simple satellites for the surround effect and some full range speakers for the front left and right. They are quite damn good with having a sizable woofer in the bottem with plenty of kick. They are unable to produce reliable bass under 50hz. I picked up a 18" Sub-Woofer that is connected to a properly sized amp. Now, my sub-woofer does not get ANY signal unless I enable bass redirection in the THX Console. This is coming from a source that does have Dolby surround built into it, so needing to upmix is not necessary... I think.

This would be fine if it did not take all the bass away form my fronts. What gives?!
    
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post #2 of 5
What's the crossover frequency set at on your receiver and the THX console. I have a feeling it's set too high.
    
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post #3 of 5
Thread Starter 
Well, the receiver does not allow me to set a crossover. It just accepts what ever signal it gets. I can even pump ultra high freqs through the sub channel if I wanted. The crossover set for the THX console is 30Hz. The sub's range is 30Hz - 2Hz.
    
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post #4 of 5
Quote:
Originally Posted by FireBean View Post

Well, the receiver does not allow me to set a crossover. It just accepts what ever signal it gets. I can even pump ultra high freqs through the sub channel if I wanted. The crossover set for the THX console is 30Hz. The sub's range is 30Hz - 2Hz.

Oh wow, set that crossover to 100Hz.
   
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post #5 of 5
Thread Starter 
Sub is not rated for 100Hz. It's rated for 30 and lower. Is an 18in sub-woofer. Not meant for the punchy base, my full-range subs have that figured out. This is mostly for the extremely low, feel it in your chest vibrations. As soon as I get this figured out, It's going to shake my neighbor's house. band.gif
    
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