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SV Sound
Chapter 5-1
Powered Box Basic Common Features. SVS
subwoofer amps use the most durable and powerful designs possible.
Get familiar with yours!
Volume/Gain Use “Gain” (in conjunction with your Audio Video Re-
ceiver (AVR) subwoofer output level control) to achieve bass level cali-
bration to your liking. Start your setup with the sub’s volume/gain no
more than 1/4 to 1/3 of the way up (turned clockwise from the left).
Crossover Frequency. If you use your AVR’s internal crossover to
manage bass frequencies (highly recommended), the setting of this
knob on your SVS sub is irrelevant. (Note: Use the sub’s crossover
“Enable/Disable” switch discussed below to take advantage of this con-
figuration.)
Phase. Think of long bass waves as conflicting or enhancing each
other, depending on the timing of their arrival at your listening location
(either together, or not). Set phase to zero if your AVR offers settings
for the distance from your seat to your subwoofer. Adjust in small
steps for smooth sound with music playing if your AVR lacks a sub-
woofer distance setting.
Line In/Out. Use either of the sub’s “Line In” jacks (RCA type) to con-
nect the subwoofer to the output jack of your AVR. Feeding just one
input is enough (they are “summed” inside the sub). If you are using a
conventional amp and/or a stereo setup you can use the “Line Out”
jacks to send sound (filtered of deep bass information) back to your
system amp, or switch off this filter by setting it to “Disable”. A simple
RCA signal cable is all you need for either type configuration. See
“Crossover Feature” discussion below for more on Line Out options.
Auto-On. Your Powered Box allows itself to be in an “Auto-On”
mode… or “On” all the time. With the former setting (the switch in the
“Auto” position) your subwoofer will “sense” that a DVD or CD etc. has
begun and switch its audio circuits on immediately (the “hard” power
switch mentioned below must be set to “on”, naturally). A few minutes
after a movie, the Auto-On light will turn from Green to Red, switching
portions of the sub’s power supply back off.
Sometimes, with very low listening levels, your subwoofer might not get
enough of a bass signal from your AVR to “trip” the auto-on circuit.
Should you ever find this to be the case you may leave this switch to
“On”, or turn up the AVR’s subwoofer level some (be sure to recalibrate
channels levels with your sound meter afterwards).