Orban OPTIMOD-FM 8700, Operating Manual

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OPERATION ORBAN MODEL 8700i
White Paper: Measuring the Improvements in Optimod-FM 8700i’s FM
Peak Limiting Technology
Figure 3-8
Madonna, “Get Together” remix; third-octave difference
Introduction
The 8700i offers new “MX” peak limiter technology that decreases distortion while
increasing transient punch and high frequency power handling capacity. Compared
to the FM-channel peak limiter in Optimod-FM 8500, the new peak limiter 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.