Operating instructions

3-46
OPERATION ORBAN MODEL 9400
and peak limiter.
Each chain can be adjusted separately. The equalization and five-band compressor
settings are likely to be quite different in the two chains. Except as noted, each con-
trol described in this section is duplicated so there is one control for the analog sec-
tion and one control for the HD AM section.
The crossover frequencies for the bands in the AM analog and HD AM chains are dif-
ferent. In the AM analog chain, the bottom four bands cover 50 – 3000 Hz, while
Band 5 covers 3 kHz to the top of the range set by the 9400’s lowpass filter. In the
HD AM chain, the bottom four bands cover 20 – 6,000 Hz and Band 5 covers 6 – 15
kHz. The analog AM chain therefore concentrates its “automatic re-equalization”
power in the 50 – 3,000 Hz audio bandpass of the typical analog AM radio, while
the HD AM chain covers the much wider bandwidth provided by HD AM.
The HD AM and Advanced Modify controls are accessible only from 9400
PC Remote software.
The tables below summarize the Multiband and Band Mix controls in the dynamics
sections for both analog AM and HD AM.
MB DRIVE
(“Multiband Drive”) control adjusts the signal level going into the multi-
MB Attack / Release / Threshold
Full Name Advanced Name Range
B1 THR B1 Compression Threshold –16.0 … 0.0, Off
B2 THR B2 Compression Threshold –16.0 … 0.0, Off
B3 THR B3 Compression Threshold –16.0 … 0.0, Off
B4 THR B4 Compression Threshold –16.0 … 0.0, Off
B5 THR B5 Compression Threshold –16.0 … +10.0, Off
--- B1 Attack 4.0 … 50.0 ms, Off
--- B2 Attack 4.0 … 50.0 ms, Off
--- B3 Attack 4.0 … 50.0 ms, Off
--- B4 Attack 4.0 … 50.0 ms, Off
--- B5 Attack 4.0 … 50.0 ms, Off
--- B1 Limiter Attack 0 … 100%
--- B2 Limiter Attack 0 … 100%
--- B3 Limiter Attack 0 … 100%
--- B4 Limiter Attack 0 … 100%
--- B5 Limiter Attack 0 … 100%
--- B1 Delta Release –6 … 6 [steps with respect to current
--- B2 Delta Release –6 … 6 MB Release setting]
--- B3 Delta Release –6 … 6
--- B4 Delta Release –6 … 6
--- B5 Delta Release –6 … 6
— B1MaxDeltGR 0 … 24 dB, Off
— B2MaxDeltGR 0 … 24 dB, Off
— B3MaxDeltGR 0 … 24 dB, Off
— B4MaxDeltGR 0 … 24 dB, Off
— B5MaxDeltGR 0 … 24 dB, Off
Lookahead Off, On, Auto
Table 3-8: MB Attack / Release Controls