Page 8 | SV Subwoofers |
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Phase. Think of bass waves as conflicting or enhancing each other, depending on the timing of their arrival at your listening location (either together, or not). Since some of your room’s bass might come from main, center and/or surround speakers, as well as your sub, getting these bass wave forms to arrive in a complementary, enhancing fashion is the difficult job of the phase knob. Essentially, this control varies the timing of the bass waves coming from the sub. The effect of bass cancella- tion will vary by volume and frequency in your room, and no one setting is likely to ever be “perfect”. One simple technique to optimize phase is to find a nice “bassy” loop (such as the menu of “Godzilla”) and measure the loop’s bass response at vari- ous bass SPL peaks. As the loop runs, vary the phase knob. Where you see the most response on a given bass passage is the phase setting providing the least bass cancel- lation in your room (for the frequencies of the demo loop you chose). Adjusting phase is mostly a concern in dual sub configurations or systems with “Large” mains.
Line In/Out. Use one of the sub’s “Line In” jacks to connect the subwoofer to the output jack of your receiver/processor. Feeding just one input is enough. If you are using a conventional amp and/or a stereo setup you can use the “Line Out” jacks to send sound (filtered of bass information) back to your system amp. A simple RCA to RCA cable is all you need.
Auto On. Your
Crossover Enable Switch. If you allow your DD/DTS
Subsonic (SS) Filter Switch. Your
SSswitch to 25Hz. But if you are using the port plug, set the SS switch to 20Hz. A
High level inputs/outputs. Not commonly used today, but binding posts are there in case you don’t have