Operation - Infinity HPS1000 Technical Manual

Amplifier/Subwoofer
Setting the Controls
1.
Initially set the HPS1000's Gain control to the "O"
position.
2.
Initially set the HPS1000's Crossover control to the
100Hz position.
Turning the Power On
3.
Plug your HPS1000's AC cord into a wall outlet. Do not
use the outlets on the back of the receiver.
4.
Turn on your HPS1000 sub by pressing the power
button on the center of the front panel.
5.
Turn on your entire audio system and start a CD or
movie sound track at a moderate level.
Adjusting the Gain Control
6.
Turn your HPS1000's Gain control (page 4, #4) up to
the "5" position (half way). If no sound emanates from the
subwoofer, check the AC-line cord and input cables. Are
the connectors on the cables making proper contact? Is the
AC plug connected to a "live" receptacle? Has the power
button been pressed to the "on" position? (Note: A green
indicator on the front panel will light when the power is on.)
Once you have confirmed that the subwoofer is active,
proceed by playing a CD, record or cassette. Use a
selection that has ample bass information.
7.
Set the overall volume control of the preamplifier or
stereo to a comfortable level. Adjust the subwoofer's Gain
control (page 4, #4) until you obtain a pleasing blend of
bass. Bass response should not overpower the room but
rather be adjusted so there is a harmonious blend across
the entire musical range. Many users have a tendency to
set the subwoofer volume too loud, adhering to the belief
that a subwoofer is there to produce lots of bass. This is
not entirely true. A subwoofer is there to enhance bass,
extending the response of the entire system so the bass
can be felt as well as heard. However, overall balance
must be maintained or the music will not sound natural. An
experienced listener will set the volume of the subwoofer
so its impact on bass response is always there but never
obtrusive.

OPERATION

Crossover Adjustments
8.
Crossover Control (page 4, #2) – The Low-Pass
control determines the highest frequency at which the
subwoofer reproduces sounds. If your main speakers can
comfortably reproduce some low-frequency sounds, set
this control to a lower frequency setting, between 50Hz –
100Hz. This will concentrate the subwoofer's efforts on
the ultradeep bass sounds required by today's films and
music. If you are using smaller bookshelf speakers that
do not extend to the lower bass frequencies, set the
low-pass crossover control to a higher setting, between
120Hz – 150Hz.
The Phase Control
9.
The Phase Control (page 4, #3) determines whether
the subwoofer speaker's piston-like action moves in and
out with the main speakers, 0° , or opposite the main
speakers, 180° . Proper phase adjustment depends on
several variables such as room size, subwoofer
placement and listener position. Adjust the phase switch
to maximize bass output at the listening position.
10.
The EQ switch, located on the front panel, optimizes
the subwoofer's performance for both movie and music
listening. When in the "Video" position, a special EQ
circuit is activated, enhancing low frequencies by
approximately 3dB at 32Hz and delivering the full impact
and excitement of today's movie soundtracks. When in
the "Audio" position, the subwoofer provides the accurate
and linear frequency response that is ideal when a natural
tonal balance is desired for music listening.
11. Remember: every system, room and listener is different.
There are not necessarily any right or wrong settings; any
setting you choose will result in excellent performance.
Should you decide to fine-tune your system for optimum
performance, be patient and trust your ears. It will be worth
the effort involved to fully "tweak" your system.
HPS1000
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