Directed Audio XTR5002 - Manual (Page 9)

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Sealed Example High-Pass Set at 20Hz
this sealed example is the same 12-inch woofer in the recommended
sealed enclosure . Up to 6 dB of boost is capable if 20 Hz was used .
With +6dB of boost, the woofer has more output down to 15 Hz .
Figure 6
Figura 6
Abbildung 6
Figure 7
Figura 7
Abbildung 7
Sealed Example High-Pass Set at 30Hz
In this example, the frequency has been increased to 30 Hz . Up to
6 dB of boost is capable at this frequency . With +6dB of boost, the
woofer has more output down to 23 Hz . the overall usable output is
increased .
Figure 8
Figura 8
Abbildung 8
Figure 9
Figura 9
Abbildung 9