Owner`s manual

6.5.2.1 MAIN DISCUSSION
Press the /\ or \/ key to select between ‘Large’
and ‘Small/THX’. Once you have selected a size
press the > key to select the ‘Center’ speaker setup
screen.
Center speakers are pretty important. Buy the best
and biggest you can afford. 60% of all the audio
information is played back through the center
channel, including both dialogue and effects. Clear,
understandable dialogue and uncompressed effects
provide you with the drama and involvement the
Director and actors intended.
6.5.2.2 CENTER DISCUSSION
Press the /\ or \/ key to select between ‘Large’
and ‘Small/THX’ and ‘None’. There are very few
Center speakers available which can be classed
as ‘Large’. Remember that ‘Large’ means the
speaker needs to be flat in frequency response
down to 30 or 40Hz. If you have a center speaker,
and you should have one, it is quite likely going
to sound best if you define it as ‘Small/THX’.
Selecting ‘Small/THX’ sends audio information
below 80Hz (including the LFE) to the Sub-woofer,
or the ‘Large’ Left and Right Front speakers. (No
information is lost).
6.5.2.3 SURROUND DISCUSSION
Once you have selected a size press the > key to
select the ‘Surround’ speaker setup screen.
Press the /\ or \/ key to select between ‘Large’
and ‘Small/THX’ and ‘None’. There are very few
Surround speakers available which can be classed
as ‘Large’. If you have Surround speakers, and
you should have them, they will quite likely sound
best if you define them as ‘Small/THX’. Selecting
‘Small/THX’ sends audio information below
80Hz (including the LFE) to the Sub-woofer, or
the ‘Large’ Left and Right Front speakers if you
have no woofer. (No information is lost).
6.5.2.4 SUBWOOFER DISCUSSION
Once you have selected a size press the > key to
select the ‘Subwoofer’ speaker setup screen.
Press the /\ or \/ key to select between ‘Yes/THX’
and ‘None’. Select ‘Yes/THX’ if you have any
sub-woofer connected to the Sub-woofer output.
If you elect to insert the Sub(s) between the SSP-75
and the Right and Left Front then select ‘None’.
Selecting ‘None’ sends audio information below
80Hz (including the LFE) to the ‘Large’ Left and
Right Front speakers. (No information is lost).
6.5.2.5 BASS LIMITER
Once you have selected a size press the >
key to select the ‘Bass limiter’ setup screen.
The default level is ‘Off’. The purpose of Limiting
the Bass output is to protect your speakers and
your neighbors. It generally does not need to be
turned on. The Limiter action is to prevent the
sub-woofer (or the woofer section of your ‘Large’
speakers), from playing louder than a certain level.
Unfortunately the setup method can damage your
speakers (woofers) so Extreme caution is advised
if you decide you need to set it up.
Press ENTER to engage noise. The woofer will begin
playing pink noise at –44dB and then gradually
raise the level. You need to be listening carefully,
with the remote in your hand, with your thumb on
the V (down button, below the ENTER key). Listen
for any change in the sound other than the volume.
If the speaker(s) begin to distort, immediately press
the \/ (down button, below the ENTER key) to turn
off the automatic increase in volume and reduce
the output level a dB or so below the level at which
distortion began. Distortion may include the woofer
cone banging or rattling against the magnet. DO
NOT allow distortion of any kind to go on for ANY
length of time.
If you are unsure on whether you need this set
up, talk with your dealer and get good advice.
Generally, Bass limiting is not required, even if you
are listening to loud explosions. However; if you
hear low frequency distortion while watching
movies you will need to turn on the bass limiter.
6.5.2.6 EXIT SPEAKER SETUP
Once you have finished with setting up the size and
number of speakers in your theater you can press
the MENU key again to reach the next setup level:
Level Calibrate.
6.6 LEVEL CALIBRATE
Obviously you must correctly set up all the speakers
in your surround system before attempting to
calibrate the speakers. Speakers and amplifiers
can all have different sensitivities or efficiencies.
Calibrating the speakers sets them up to all play at
the same level for the same input to the Processor.
The SSP-75 needs to be instructed how to send
more or less signal to each channel so they all play
at the same SPL when they’re supposed to.
There are two easy ways to calibrate the speaker.
You can do it by hand with an SPL meter, or
automatically using the supplied microphone.
The two ways are equally accurate, but using the
microphone and an internal processor means all the
work is done for you. An SPL meter is inexpensive,
and can be easily found at a RADIO SHACK store.
6.6.1 MANUAL CALIBRATION
Begin the manual correction of speaker levels by
placing the SPL meter at the preferred listening
position (or near the middle of the seating area) at
about seated ear level. Turn on the meter and set it
to 70dB. At the Level Calibrate screen (above) press
ENTER on the wand.
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Speaker Setup
Center: Small/THX
to select/adjust
Speaker Setup
Surround: Small/THX
to select/adjust
Level Calibration
Front left: 0.0db
Raising noise level
ENTER to engage noise
A.CAL to auto-calibrate
to select/adjust
Speaker Setup
Subwoofer: Yes/THX
to select/adjust
Speaker Setup
Bass Limiter: Off
ENTER to engage noise
to select/adjust
Level calibrate
Front left: 0.0dB
ENTER to engage noise
A.CAL to auto-calibrate
to select/adjust