Bryston SP2 Stereo Amplifier User Manual


 
SP2 PREAMP/PROCESSOR
4: Once you have selected the desired crossover
frequency, press SELECT to exit this menu and
return to the Speaker Config menu. The select-
ed frequencies are common to all speakers
defined as ‘SMALL’. Crossover frequency can be
set independently for Front, Centre, Surround
and Back speakers.
NOTE 1: The crossover action is only applied
to speakers defined as ‘SMALL’ in the
speaker configuration menu.
SETTING THE CHANNEL DELAYS
In this step you will need to measure within one
foot the distances from your chosen listening/view-
ing position to the various loudspeaker locations
in your system. You will need the tape measure or
other means of making these measurements. You
should record this data for future reference.
1: Now, make a measurement from the chosen
seated position to each loudspeaker.
2: Next, enter the main menu by pressing on one
of the menu buttons on the SP2 front panel.
Move the cursor to “DLY”. Hit ‘Select’ - You
are now in the Delay Menu. The SP2 automati-
cally calculates the required delay time per
speaker using the data entered as distance
from the listening position. Delays are imple-
mented using DSP RAM and have a maximum
value.
IMPORTANT: It is recommended that the closest
speaker is entered first. The SP2 will calculate the
maximum allowable distance from the listening
position for the remaining speakers. Please note
that delay is represented in feet. For reference,
One foot (0.3048 meters) = approximately 1 milli-
second of delay.
1: Move the cursor to the speaker you want to
set the distance/delay for (L C R RS LS RB LB
SB). Hit Select. Now you can
adjust the Delay value which is equivalent to
the distance you measured for the selected
speaker using the arrow buttons. Set the delay
for each speaker in your system to the nearest
foot/meter. Rounding up is OK. Remember that
if one back speaker is selected, the Left Back
output is used to set the delay.
2: Hit SELECT or [X] Exit when finished. The
SP2’s default factory settings as shipped are
10 feet to every speaker, resulting in zero
overall delay. When using the remote control
to enter these selections, press the “SAVE”
button before exiting or settings will be lost.
CALIBRATING AND SETTING LEVELS/CHANNEL
TO CHANNEL BALANCE.
1: Position the Sound Level Meter at the Centre
point of your listening area, at average ear
height [approximately 40 - 46 inches {102 -
117 cm.} with its microphone positioned verti-
cally (pointing at the ceiling). DO NOT aim the
sensing microphone at the speakers, as this
will produce inaccurate level indications.
2: Using the SP2 Remote, press and hold for
approximately 3-5 seconds the key labeled
“TEST”.
IMPORTANT: The Test-Noise Mode can only be
initiated from the SP2 remote, and not from the
front panel.
The shaped pink-noise test signal will begin with
the left-front loudspeaker. If the signal does not
appear in this speaker please stop the process and
check your wiring and connections for proper con-
figuration.
IMPORTANT: When using the Pink Noise genera-
tor within the SP2 for speaker level calibration, the
salient point is that all channels measure equal dB.
After pushing the test button, the pink noise will
start in the front left speaker. Record the dB level
from this speaker (with the level trim value at 0
dB on the LCD Display), and adjust all the others
to match it. It is not critical to reach some specific
dB level (ex. 85 dB), it is more important that all
channels are at equal levels.
1: Hit the “TEST” button again to sequence the
noise to the next speaker. The sequence is L -
> C -> R -> RS -> RB -> LB -> LS -> SUB ->
EXIT.
2: Using the volume up/down arrows on the
remote or the arrow keys on the SP2 adjust
the level of the noise for each speaker so that
it matches the front left channel noise (dB)
level on the Sound Level Meter.
3: When the cycle is complete, the test noise sig-
nal will end, and the unit will switch back to
the previous mode. If any output is unused (as
defined by ‘NONE’ in the Speaker Configuration
Setup), the noise sequence will automatically
skip to the next speaker in the sequence.
SETTING CHANNEL LEVELS wITHOUT PINK NOISE
If you wish to adjust the speaker level trims with-
out using the pink-noise test signal, this can be
done from the Front Panel menu system.
1: First enter the main menu by pressing on any
one of the menu buttons on the SP2 front
panel (< - > or SELECT).
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