2 – Using the card : MONITOR ALIGNMENT option
16
TASCAM IF-SM/DM Owner’s Manual
Setting the overall surround level
This is set on the
OPERATION
screen after the
channels have been aligned. For movie work,
this is standardized at 85dBC, and for televi-
sion at 82dBC
1
. Musical program material
may use a higher reference level.
1
Turn down the level of the monitoring
system.
2
Set the value of the desired reference
level on the
SPL REFERENCE
field of the
OPERATION
screen.
3
Use POD 3 (or POD 1, as explained
earlier) to set the level to the desired
reference level.
4
Route the oscillator (pink noise) at
nominal level through the surround
system (all channels).
5
Adjust the amplification system so that
the SPL meter located at the listening
position reads 85dB.
Now the POD 3 control can be used to reduce
the monitoring level. Only increase the level if
the material permits.
• The monitor level can be set from 0dbC to
65dBC in 5dB steps, and from 65dBC to
109dBC in 1dB steps.
• The SPL reference level can be set from
65dBC to 109dBC in 1dB steps.
NOTE
At SMPTE standards, there is 20 dB of headroom,
so the SPL can be at 105dB before distortion
occurs.
1. The term “dBC” refers to the “C”
weighting average mentioned earlier.
