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Page 10© 2002/2003 bel canto design, Ltd. PRePro User’s Guide rev1103
Calibration
1 FRONT LEFT 0db
2 CENTER 0db
3 FRONT RIGHT 0db
4 SURROUND RIGHT 0db
5 BACK RIGHT 0db
6 BACK LEFT 0db
7 SURROUND LEFT 0db
8 SUBWOOFER 0db
EXIT
The CALIBRATION setting allows you to match
the volume level of front and surround speakers
with the CENTER channel speaker from the main
listening position. When a channel is selected a
pink noise signal is generated to best enable
you to set the level by using an SPL meter or by
ear.
1. From MAIN MENU press selection 6.
2. Press 2 and the CENTER will play a pink
noise signal. Measure or make a mental note
of the level of output.
3. Press 1 to produce pink noise from FRONT
LEFT speaker.
4. Using the VOLUME controls on the right side
of the front panel adjust the level of the
FRONT LEFT speaker so it is at the same vol-
ume as the CENTER speaker. If level matching
by ear or instrument, you may have to go
between the CENTER and the FRONT LEFT
several times, adjusting the FRONT LEFT
speaker until they both have the same vol-
ume.
5. Repeat steps 2, 3 & 4 for FRONT RIGHT,
SURROUND and BACK speakers, matching
each to the CENTER speaker from the main
listening position.
6. Press 8 to produce pink noise from the SUB-
WOOFER. The SUBWOOFER will not sound
the same as the rest of the speakers, repro-
ducing only the lower frequencies. Adjust the
volume as in Step 4 until the SUBWOOFER
sounds or measures the same level as the
CENTER speaker level.
7. Press EXIT to get back to the MAIN
MENU.
Note: If a loudspeaker is set to NONE in
the Speaker Size menu and you select this
speaker (for example you have no back
speakers in a 5.1 system and you press
Back Right in the Calibration menu) then cali-
bration noise will come from the next active
speaker in the list (Surround Left in this exam-
ple). This is normal, just be sure to select
only active speakers when going through the
calibration process. You will not be able to
adjust the level of speakers which are inac-
tive, even if selected.
SPEAKER POSITION CALIBRATION
1 FRONT LEFT
2 CENTER
3 FRONT RIGHT
4 SURROUND RIGHT
5 BACK RIGHT
6 BACK LEFT
7 SURROUND LEFT
8 SUBWOOFER