4
C
PLACEMENT
Where to position your
V815/V1020/V1220
The V815/V1020/V1220 operates at low
bass frequencies which are essentially
omni-directional. That means you can
place the V815/V1020/V1220 almost any-
where in a room without compromising the
effectiveness of your main stereo speakers.
Four factors need to be considered:
1)distance from your main speakers;
2)distance from a wall outlet;
3)distance from your receiver; and
4)proximity to walls and corners.
3. REMOVABLEFUSEHOLDER. By push-
ing in and turning counter-clockwise,
you can remove and replace the fuse.
Check the rating on the fuse for proper
size of your unit.
4. POWER INDICATOR. When the amp-
lifier is ON, this indicator will be green.
When the amplifier is in the STANDBY
mode, as mentioned in item 5, this indi-
cator will be red.
5. POWER/AUTO ONSWITCH. This tog-
gle switch turns the V815, V1020, or
V1220 on and off. When the switch is in
the ON position, the amplifier will stay
on as long as the switchremains in that
position. When this switch is in the
AUTO position, the amplifier will stay
turned on as long as a signal is being fed
to the subwoofer amplifier. 15 to 20
minutes after you stop playing music or
a video, the amplifier goes into STAND-
BY mode – see (4). When you again
begin to play music or a video, the
amplifier will automatically turn on.
6. PHASE SWITCH. This switch is used
to set the subwoofer’s phase to either
normal “0º” or reverse “180°” (out of)
phase. Once you determine the place-
ment of the V815/V1020/V1220, you will
need to try both positions of this switch
for the best bass output for your listen-
ing position. The physical location of
your subwoofer and main speakers
determines the phase setting that will
sound best at your main listening posi-
tion. If this requires using the “180°”
mode, don’t worry, there is nothing
“abnormal” about it.
7. VOLUMECONTROL. Rotating this
knob clockwise increases the output
level of the subwoofer. To start out,
make sure that the VOLUME is turned all
the way down (fully counterclockwise).
Later, after some initial listening tests,
you can adjust the volume to your own
tastes. However, care should be taken
not to overdrive the subwoofer to the
point of audible distortion.
8. CROSSOVER FREQUENCY CONTROL.
This control determines what lower part
of the frequency spectrum will be repro-
duced by the V815, V1020, or V1220and
what higher parts will be handled by
your main speaker. It is a “crossover”
control. Rotating the knob sets the point
where all lower frequencies will be han-
dled by the subwoofer and all higher fre-
quencies will be routed to your main
stereo speakers.
As a starting point, set the control
around 80 Hz. if you are using left and
right tower speakers, 100 Hz. with
bookshelf speakers, and 120 Hz. with
small mini-speakers.
Note:If you use the SUB IN connector,
the RECEIVER TYPE toggle switch must
be in the Pro Logic mode for the
crossover frequency control to operate.
9. SUB IN. This connection is used
ONLY if you have a Dolby Pro Logic or
Dolby Digital receiver/integrated amplifi-
er which has a subwoofer output.
10. RECEIVER TYPE TOGGLE SWITCH.
If you use the SUB IN connector (item
9), you must set this switch to the type of
receiver you have.
Note:When this switch is set to DIGITAL
RECEIVER5.1, 6.1, 7.1, the CROSSOVER
FREQUENCYcontrol (9) does not affect
the signal.
11. POWER INPUT. This connector
is the AC power in. Your subwoofer is
supplied with a removable power cord
that mates to this plug.
1.Distance from your main speakers.
The best placement for your subwoofer is
on the same wall as the main speakers,
especially if you are matching up with
small bookshelf speakers. With tower
speakers, side wall or rear placement is
also acceptable.
2.Wall outlet.Since the V815, V1020,
and V1220 require AC power, it must be
placed within ten feet of a wall outlet. We
don’t recommend extending that range
with an extension cord.
3. Connections to your receiver,
integrated amplifier or preamplifier.
If your receiver or integrated amplifier
does not have a subwoofer output or LFE
output (see next page), hookup between
the amp and V815/V1020/V1220 will be
made with speaker wire. You can basically
place the V815/V1020/V1220 anywhere in
a normal-sized room.
4. Proximity to walls and corners.
Physical placement of the subwoofer will
have a definite impact on the frequency
response and the perceived amount of
V815/V1020/V1220 bass output. Because
low frequencies have long wavelengths,
they are influenced by proximity to a
boundary such as a wall or floor.
See Drawing 2 on the facing page. When
you place the V815/V1020/V1220 well
away from a wall, it will produce bass at a
certain level. Move the subwoofer close to
