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It is impossible to characterize the listening quality of even the simplest limiter or compressor 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 equipment. |
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Except as noted, specifications apply for measurements from the analog left/right input to the analog left/right output |
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System
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Frequency Response
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Depending on settings, is flat or follows standard 50 µs or 75 µs preemphasis curve ±0.10 dB, 20 Hz – 20 kHz. (At 32 kHz input sample rate, the passband is reduced to approximately 14.7 kHz.) Analog left/right output and digital output can be user-configured for flat or pre-emphasized output. |
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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. The dynamic range of the A/D Converter, which has a specified overload-to–noise ratio of 110 dB, primarily governs it. The dynamic range of the digital signal processing is 144 dB. |
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Total System L/R Channel Separation
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>70 dB, 20 Hz – 20 kHz; 90 dB typical (analog I/O). Digital I/O separation is essentially infinite. | |||||||||
Polarity |
(Bypass Mode; Operate Mode when processing chain is configured for linear phase): Absolute polarity maintained. Positive-going signal on input will result in positive-going signal on output. |
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Internal Processing Sample Rate |
48 kHz. We believe this provides maximum audible transparency by minimizing numerical “noise” in the equalizers and filters while still preserving a pure, transparent sound. The double-precision equalizers and crossover filters used throughout the 6300 produce at least 6 dB lower noise and nonlinear distortion than they would at 96 kHz. |
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Processing Resolution |
Internal processing has 24 bit (fixed point) or higher resolution; uses Motorola DSP56367 chips. |
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Processing Delay
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The minimum available input/output delay is approximately 20 ms, as determined by the advanced “look-ahead” processing algorithms employed. This can be padded to exactly one frame of 24, 25, 29.97 or 30 frames/second video up to a maximum delay of 50 ms. | |||||||||
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Operating Mode
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Stereo or dual-mono. In dual-mono mode, both processing channels have the same subjective adjustments (as determined by the active preset) but are otherwise independent, making this mode appropriate for dual-language transmissions. Operating mode can be set via GPI, Ethernet and serial connections, internal clock-based automation, and AES3 Status Bits. | |||||||||
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Analog Audio Input
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Configuration |
Stereo / Dual-Mono. |
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Impedance |
>10 kΩ load impedance, electronically balanced. |
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Nominal Input Level |
Software adjustable from –4.0 to +13.0 dBu (VU). |
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Maximum Input Level |
+27 dBu. |
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Connectors |
Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical. |
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A/D Conversion |
24 bit 128x oversampled delta sigma converter with linear-phase anti-aliasing filter. |
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Filtering |
RFI filtered, with high-pass filter at 0.15 Hz (–3 dB). |
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Analog Audio Output
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Configuration |
Stereo. Flat or pre-emphasized (at 50 µs or 75 µs), software-selectable. |
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Source Impedance |
50 Ω, electronically balanced and floating. |
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Load Impedance |
600 Ω or greater, balanced or unbalanced. Termination not required or recommended. | |||||||||
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Output Level
(100% peak modulation) |
Adjustable from –6 dBu to +24 dBu peak, into 600 Ω or greater load, software-adjustable. |
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Signal-to-Noise |
≥100 dB unweighted (Bypass mode, 20 Hz – 20 kHz bandwidth, referenced to 100% modulation). |
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Distortion |
≤0.01% THD (Bypass mode, de-emphasized) 20 Hz – 20 kHz bandwidth. |
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Connectors
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Two XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 electronically balanced, floating and symmetrical. |
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D/A Conversion
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24 bit 128x oversampled. | |||||||||
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Filtering
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RFI filtered. |
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Digital Audio Input
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Configuration
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Stereo or Two-Channel (dual-mono) per AES3 standard, 24 bit resolution, software selection of stereo or dual-mono. Unit can detect Stereo or Two-Channel status bits and switch modes appropriately. |
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User Bits
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Unit can pass AES3 User Bits from its AES input to AES Output #1. | |||||||||
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Sampling Rate
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32, 44.1, 48, 88.2 or 96 kHz, automatically selected. |
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Connector
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XLR-type, female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110 Ω impedance. |
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Input Reference Level
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Variable within the range of –30 dBfs to –10 dBfs. | |||||||||
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J.17 De-emphasis
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Software-selectable. | |||||||||
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Filtering
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RFI filtered. | |||||||||
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Digital Audio Output
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Configuration
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Stereo or Two-Channel per AES3 standard. Output configured in software as flat or pre-emphasized to the chosen processing preemphasis (50 µs or 75 µs), with or without J.17 preemphasis. | |||||||||
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Samplerate
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Internal free running at 32, 44.1, 48, 88.1 or 96 kHz, selected in software. Can be synced at 32, 44.1, 48, 88.1 or 96 kHz to 1x wordclock or AES11id applied to the Sync input or to AES3 or AES11 signals applied to the AES3 digital input. (Passband is limited to approximately 14.7 kHz when using 32 kHz output samplerate.) | |||||||||
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Word Length
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Software selected for 24, 20, 18, 16 or 14-bit resolution. First-order highpass noise-shaped dither can be optionally added, Dither level automatically adjusted appropriately for the word length. | |||||||||
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Connector
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XLR-type, male, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3 transformer balanced and floating, 110 Ω impedance. | |||||||||
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Output Level
(100% peak modulation) |
–20.0 to 0.0 dBfs software controlled. | |||||||||
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Filtering
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RFI filtered. | |||||||||
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Sync Input
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Configuration
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Can accept wordclock or AES11id (75 Ω) sync, selectable in software. | |||||||||
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Connector
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Female BNC. | |||||||||
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Termination
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Unterminated. For wordclock, use an external 75 Ω terminator if the 6300 is the last item in the chain. For AES11id, always use a 75 Ω terminator. | |||||||||
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Remote Computer Interface
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Configuration
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TCP/IP protocol via direct cable connect, modem, or Ethernet interface. Modem is not supplied. | |||||||||
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Serial Port
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115 kbps RS–232 port DB–9 male, EMI-suppressed. | |||||||||
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Ethernet Port
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100 Mbit/s on RJ45 female connector. | |||||||||
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Remote Control (GPI) Interface
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Configuration
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Eight (8) inputs, opto-isolated and floating. | |||||||||
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Voltage
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6 – 15 VAC or DC, momentary or continuous. 12 VDC provided to facilitate use with contact closure. | |||||||||
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Connector
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DB–25 male, EMI-suppressed. | |||||||||
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Control
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User-programmable for any eight of user presets, factory presets, bypass, test tone, stereo or mono modes, analog input, digital input. | |||||||||
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Filtering
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RFI filtered. | |||||||||
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Tally Outputs
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Circuit Configuration
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Two NPN open-collector outputs. | |||||||||
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Voltage
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+15 Volts maximum. Do not apply negative voltage. When driving a relay or other inductive load, connect a diode in reverse polarity across the relay coil to protect the driver transistors from reverse voltage caused by inductive kickback. | |||||||||
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Current
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30 mA maximum. | |||||||||
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Indications
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Tally outputs can be programmed to indicate a number of different operational and fault conditions, including Input: Analog, Input: Digital, Analog Input Silent, AES Input Silent and AES Input Error. | |||||||||
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Power
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Voltage
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85 – 264 VAC, 50 – 60 Hz, 15 VA. | |||||||||
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Connector
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IEC, EMI-suppressed. Detachable 3-wire power cord supplied. | |||||||||
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Grounding
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Circuit ground is independent of chassis ground and can be isolated or connected with a rear panel switch. | |||||||||
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Safety Standards
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ETL listed to UL standards, CE marked. | |||||||||
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Environmental
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Operating Temperature
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32 to 122 °F / 0 to 50 °C for all operating voltage ranges. | |||||||||
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Humidity
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0 – 95% RH, non-condensing. | |||||||||
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Dimensions (W x H x D)
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19” x 1.75” x 14.25” / 48.3 cm x 4.5 cm x 36.2 cm. One rack unit high. | |||||||||
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RFI / EMI
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Tested according to Cenelec procedures. FCC Part 15 Class A device. | |||||||||
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Shipping Packing
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58 x 57 x 17 cm Weight: 16 lbs / 7.25 kg. |
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Warranty
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Two Years, Parts and Service
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Subject to the limitations set forth in Orban‘s Standard Warranty Agreement. | |||||||||
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Operating Manual
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| The 6300 Operating Manual is available for download from ftp.orban.com/6300/Documentation. This contains both setup and servicing instructions. |
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Because engineering improvements are ongoing, specifications are subject to change without notice.
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| Last updated: Nov. 2010 |
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