Orion Car Audio HCCA COMPETITION HCCA10002 - Manual (Page 11)

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3EALED
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 8
Figura 8
Abbildung 8
Figure 9
Figura 9
Abbildung 9
3EALED
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 10
Figura 10
Abbildung 10
Figure 11
Figura 11
Abbildung 11