OPTIMOD-FM 8700i

OPTIMOD-FM 8700i
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OPTIMOD-FM 8700i is Orban’s flagship processor. Featuring versatile five-band and two-band processing for both analog FM transmission and digital media, the 8700i provides the industry’s most consistent sound, track-to-track and source-to-source. This consistency allows you to create a sonic signature for your station with the assurance that your signature will stay locked in, uniquely branding your sound.

OPTIMOD-FM 8700i is Orban’s flagship processor. Featuring versatile five-band and two-band processing for both analog FM transmission and digital media, the 8700i provides the industry’s most consistent sound, track-to-track and source-to-source. This consistency allows you to create a sonic signature for your station with the assurance that your signature will stay locked in, uniquely branding your sound.

The 8700i builds on 8600 V4’s outstanding reliability and industry-leading sound quality. It adds Ravenna audio-over-IP connectivity (100% AES67 compliant) and a hot-swappable, dual-redundant power supply with automatic failover. A digital MPX output using a 192 kHz AES3 connection is now standard, as are two digitized SCA inputs. A new program-adaptive subharmonic synthesizer ensures punchy bass, even with older program material. An important feature is a phase skew corrector/multipath mitigator that ensures crisp reception when receivers blend to mono and minimizes energy in the stereo subchannel without compromising separation. The phase skew corrector uses a proprietary multidimensional processing algorithm that can simultaneously correct multiple phase problems, like a combination of analog tape gap skew and comb filtering caused by multiple-microphone pickup of a single instrument in the original recording session.

Orban’s exclusive MX peak limiter technology decreases distortion while increasing transient punch and high frequency power handling capacity. Compared to the 8500’s limiter, the MX limiter typically provides 2.5 to 3 dB more power at high frequencies, which minimizes audible HF loss caused by pre-emphasis limiting. Drums and percussion cut through the mix. Highs are airy. “Problem material” that used to cause audible distortion is handled cleanly.

The 8700i’s 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. The FM loudness wars represent 20th-century thinking; in the 21st century, the new competition is digital media. Thanks to its crisp, punchy sound, the 8700i helps level the playing field between analog FM and its ever more aggressive digital-only competitors.

The 8700i offers 8500-style processing presets too. Because the input/output delay of the MX peak limiter is too long to permit talent to monitor off-air on headphones, 8500-style is useful for remotes and outside broadcasts where off-air headphone monitoring is desired and the 8700i’s low-delay monitor output cannot be brought to the talent.

In addition to subharmonic synthesis and phase skew correction , the 8700i provides stereo enhancement, HF enhancement, equalization, AGC, multiband compression, low-IM peak limiting, stereo encoding, and composite limiting — everything that even the most competitive major market station needs to stand out on the dial.

Processing for digital media like DAB+, netcasts and HD Radio™ is supplied standard. The FM and digital media processing paths split after the 8700i’s stereo enhancer and AGC. There are two equalizers, multiband compressors and peak limiters, allowing the analog FM and digital media processing to be optimized separately. The bottom line? Processing that optimizes the sound of your FM channel while punching remarkably crisp, clean, CD-like audio through to your digital channel audience.

Features:

-Frequency Response (Bypass Mode; Analog Processing Chain): Follows standard 50µs or 75µs pre-emphasis curve ±0.10 dB, 2.0 Hz - 15 kHz. Analog left/right output and Digital output can be user configured for flat or pre-emphasized output.
-Sample Rate: 64 kHz to 512 kHz, depending on processing being performed.
-Noise: Output noise floor will depend upon how much gain the processor is set for (Limit Drive, AGC Drive, Two-Band Drive, and/or Multiband Drive), gating level, equalization, noise reduction, etc. It is primarily governed by the dynamic range of the A/D converter, which has a specified overload-to–noise ratio of 110 dB. The dynamic range of the digital signal processing is 144 dB.
-Total System Distortion (de-emphasized, 100% modulation): <0.01% THD, 20 Hz - 1 kHz, rising to <0.05% at 15 kHz. <0.02% SMPTE IM Distortion.
-Total System Separation: > 55 dB, 20 Hz - 15 kHz; 65 dB typical.
-Polarity (Two-Band and Bypass Modes): Absolute polarity maintained. Positive-going signal on input will result in positive-going signal on output when HD Polarity and FM polarity controls are set to POSITIVE.
-Peak Control at HD Output: The peak limiter is oversampled at 256 kHz, yielding a worst- case overshoot of 0.5 dB at the analog output and for all output sample rates. (To achieve this performance at 32 kHz output sample rate, it is necessary to set the 8700i’s HD lowpass filter cutoff frequency to 15 kHz.)