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Speakers are playing below designated crossover frequency

post #1 of 3
Thread Starter 
I recently added a new subwoofer to my 5.1 system and have since been compulsively tweaking my speaker frequencies and crossover frequency. I downloaded a tone generating app for fun and started listening to different tones and noticed that my speakers are playing well below the frequencies I had designated for each channel and the crossover frequency.

Hardware:
Yamaha RX-V671
Klipsch Quintets
Klipsch kw-100

Settings/Notes
- Using 'small' speaker setting
- Manual crossover frequency knob on subwoofer is set to 120 hz
- Speaker frequency is is set at 100 hz
- Crossover frequency is set at 100 hz

When generating a 50 hz tone, my subwoofer and speakers are both playing the tone. Its my understanding that my speakers should be playing tones greater than or equal to 100hz and my subwoofer should be playing less than or equal to 100 hz. Any ideas on what might be causing my speakers to play so low?
post #2 of 3
The crossover frequency isn't a brick wall. There is some overlap.

Is the sub louder than the speakers at that frequency?
post #3 of 3
Quote:
Originally Posted by Tulpa View Post

The crossover frequency isn't a brick wall. There is some overlap.

+1

More specifically, here is the woofer and tweeter response of a typical 6 dB/octave 100 Hz crossover:



The FR curve for the subwoofer (black) shows that at 50 Hz the subwoofer is 1 dB, down and the LCRS speaker is only about 10 dB down. 10 dB corresponds to about half as loud, subjectively. IOW, it is still pretty loud.
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