Specially designed for the challenges of AM radio. Versatile pre- and post-limiting equalization plus superior narrow and wide-band presets created for today’s AM stations give you the cleanest and most powerful signal on the band. Asymmetrical Modulation and Tilt, applied after the clipper, help you get better performance even from older transmitters!
– Extra equalization to control or enhance highs in two critical places, both before and after the multiband limiter.
– Wide and Narrow bandwidth options and presets to let you get the best combination of coverage and quality for your station’s format.
– Crossover system is re-tuned for various narrow-band options so that all five bands of processing are used within the bandwidth constraints for maximum performance at all bandwidth settings.
– Adjustable Tilt to compensate for low-frequency ‘droop’ in older plate-modulated transmitters.
– Asymmetrical modulation for maximum AM power.
– Flexible Pre-Emphasis Switching on audio inputs and outputs. This makes it easy to fit VOLT into any existing AM airchain.
Frequency Response: User selection of flat, 50 µs, or 75 µs pre-emphasis curve within ± 0.50 dB, 30 Hz to 15 kHz.
Signal-to-Noise Ratio: Audio >95 dB analog, >120 dB digital I/O.
System Distortion: Less than 0.01% THD, 20 Hz – 7.5 kHz (second harmonic distortion above 7.5 kHz is not audible in the FM system).
Latency: 16ms nominal, +-0.5ms depending on IO selection. Low Latency FM version 10ms
Input / Output:
Composite: Output impedance 75Ω, single-ended and floating over chassis ground. BNC connectors with EMI suppression. Maximum cable 100’ / 30M RG-58U.
Output level: Separately adjustable for each of two outputs, 0V – 10V in 0.05V steps.
Pilot Level: Adjustable from 4.0% to 12.0% in 0.1% steps and OFF. Pilot Stability: 19 kHz, ± 0.5 Hz. S/N: -85 dB typical, 75 μS de-emphasized across 15 kHz, at 100% modulation Distortion: 65 dB, 30 Hz – 15 kHz. Linear Crosstalk: > -80 dB, main to sub or sub to main channel @ 100%. Non-linear Crosstalk: > -80 dB, main to sub or sub to main @ 100%. 38 kHz Suppression: > 70 dB @ 100%. 76 kHz Suppression: > 80 dB @ 100%. Pilot Protection: > -65 dB relative to 9% pilot injection, ± 1 kHz. 57 kHz (RDS/RBDS) Protection: > -50 dB.
Left and Right Stereo on EMI-suppressed XLR-3, balanced with “pin 2 hot.”
Input: Electronic balanced, impedance 10kΩ, nominal +4 dBu, max +22 dBu.
Output: Impedance 20Ω for >600Ω load, +4 dBu nominal, +22 dBu peak. Converters: 24 bit, 128x oversampled with linear-phase anti-aliasing filter.
Crystal Semiconductor CS5361, 24-bit 128x over-sampled delta sigma converter with linear-phase anti-aliasing filter.
Pre-ADC anti-alias filter, with high-pass filter at <10 Hz.
Delta sigma converter with linear-phase and anti-aliasing filter.
Digital: Stereo per AES/EBU standard, 24-bit resolution. Input locks to any rate 32 kHz – 108 kHz. Output locks to input, internal 48 kHz, or separate external AES/EBU “digital black” reference 32 kHz – 96 kHz.
Audio over IP: LiveWire Audio and control over IP, on the same RJ-45 used for Ethernet control.
GPI: EMI suppressed DB-9 at logic levels, +5 V and ground supplied. Ethernet: 10/100BaseTX.
Ethernet on EMI-suppressed RJ-45. TCP/IP control via HTML-5 internal web server, password protected. Manual addressing and port selection.
SNMP: MIB 2 compliant SNMP support for remote monitoring and control
Power: 100 – 250 VAC, 47-63 Hz. < 40 VA. Typical draw 12W RMS, maximum 15W RMS. Internal supply with overvoltage and short circuit protection. Meets EN55022, EN55011 Level B Conducted Emissions. EN61000-4-2, -3, -4, -5, -6 level 3 immunity compliant. Full international safety approval. CE marked. EMI suppressed IEC male connector. Detachable 3-wire power cords supplied for US and European use. Temperature: 32° to 122° F / 0° to 50° C for all operating voltage ranges.
Humidity: 0-95% RH, non-condensing.
Dimensions: 19” wide x 1.75” high x 16” deep (48.26cm x 13.335 cm x 40.64 cm) including connectors. Unit requires one EIA rack space for mounting.
Shipping Weight: 12 lbs. / 5.5 kg
North America: FCC and CE tested and compliant, power supply is UL approved.
Europe: Complies with the European Union Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS), as amended by Commission Decisions 2005/618/EC, 2005/717/ EC, 2005/747/EC (RoHS Directive), and WEEE.