Page 8
SV Subwoofers
your sub, getting these bass wave forms to arrive in a complementary, enhancing fashion is the difficult job of the phase control. Essentially, “phase” varies the tim- ing of the bass waves coming from the sub. But don’t despair if you don’t hear much difference with changes to the phase knob — the effect of bass cancellation will vary by volume and frequency in your room, and no single 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 SPL response at vari- ous bass peaks. As the loop runs, you can have an assistant adjust the phase control. When you see the most response on a given bass passage, typically that’s the setting with the least room-induced cancellation (for the frequencies of the demo loop).
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 Powered Box allows itself to be in an “auto on” mode… or on all the time. With the switch in the “Auto” position your subwoofer will “sense” that a DVD or CD etc. has begun and switch on immediately (the “hard” power switch mentioned below must be on naturally). A few minutes after a movie, the
Crossover Enable Switch. If you allow your DD/DTS
High level inputs/outputs. Not commonly used today, but binding posts are there in case you don’t have
Power. This heavy duty
A/C connection. Plug your sub into a dedicated A/C outlet. “Convenience” out- lets of typical receivers often don’t provide the needed current. Avoid them.
Fuse. User replaceable, contact SVS if you have trouble finding one.