6-2
TECHNICAL DATA Orban Model 8400
Specifications
It is impossible to characterize the listening quality of even the simplest limiter or com-
pressor based on specifications, because such specifications cannot adequately describe
the crucial dynamic processes that occur under program conditions. Therefore, the only
way to evaluate the sound of an audio processor meaningfully is by subjective listening
tests.
Certain specifications are presented here to assure the engineer that they are reasonable,
to help plan the installation, and make certain comparisons with other processing equip-
ment.
Performance
Specifications apply for measurements from analog left/right input to stereo composite out-
put and to FM analog left/right output.
Frequency Response (Bypass Mode): 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 config-
ured for flat or pre-emphasized output.
Noise: Output noise floor will depend upon how much gain the processor is set for (Limit
Drive, AGC Drive, Two-Band Drive, and/or Multi-Band 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 digi-
tal 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: >65 dB, 20 Hz–15 kHz; 70 dB typical.
Polarity (Two-Band and Bypass Modes): Absolute polarity maintained. Positive-going signal
on input will result in positive-going signal on output.
Installation
Analog Audio Input
Configuration: Stereo.
Impedance: >10kΩ load impedance, electronically balanced
1
.
Nominal Input Level: Software adjustable from –4.0 to +13.0 dBu (VU).
Maximum Input Level: +27 dBu.
Connectors: Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and
3 electronically balanced, floating and symmetrical.
A/D Conversion: 24 bit 128x oversampled delta sigma converter with linear-phase anti-
aliasing filter.
1
No jumper selection available for 600Ω. Through-hole pads are available on I/O mod-
ule for user-installed 600Ω termination.
To Next Page
Loading...
