Orban OPTIMOD-FM 8600Si, Operating Manual

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OPTIMOD-FM DIGITAL OPERATION
3-99
White Paper: Measuring the Improvements in Optimod-FM 8600
and 8600Si “MX” FM Peak Limiting Technology
Introduction
The 8600 and 8600Si offer new “MX” peak limiter technology that decreases distor-
tion while increasing transient punch and high frequency power handling capacity.
Compared to the FM-channel peak limiter in Optimod-FM 8500, the new peak lim-
iter typically provides 2.5 to 3 dB more power at high frequencies, which minimizes
audible HF loss caused by preemphasis limiting. Drums and percussion cut through
the mix. Highs are airy. “Problem material” that used to cause audible distortion is
handled cleanly.
While this design offers about the same loudness as 8500 processing, its main goal is
to make FM analog broadcasts more competitive with the cleanliness, punch, and
open high frequencies of the digital media against which FM analog transmissions
now battle.
Figure 3-5
Madonna, “Get Together” remix; third-octave difference