- Main Features:
- 10/100 Ethernet comes standard for remote control and monitoring
- FIR Filter capable (with DSP)
- Low-Z, 25V, 70V, 100V models
- Protea DSP, AES3, CobraNet® and Dante® input options
- DC voltage remote gain control
- Switched-mode power supply, Class-D output
- Stepped, calibrated input attenuators
- Remote power standby
- Disable all front panel controls via software
- Temperature sensitive variable speed fan with side-to-front airflow
- Selectable HPF frequencies (80Hz, 400Hz, off) on 25V, 70V, and 100V models
- 4-stage level meters
- Output current and temp indicators
- Safety/Compliance: cTUVus, CE, FCC, RoHS
- Specifications:
- Frequency Response: 20Hz–20kHz, (unweighted) ±1dB
- Input Impedance: 20k Ohms, Balanced
- Voltage Gain: 26dB (Low-Z), 32dB (70V), 35dB (100V)
- Input Sensitivity: 6.2dBu (Low-Z), 4.2dBu (25V), 7.2dBu (70V), 7.2dBu (100V)
- Maximum Input Level: +21dBu
- Software Contolled Internal HPF (25V, 70V, 100V models): 80Hz (12dB/oct), 400Hz (6dB oct), OFF
- Signal to Noise (20-20k, Unweighted):
- >107db (2450)
- >107dB (8250)
- Distortion (8 Ohm load)
- *(SMPTE) <0.5% typical
- ∆ (THD-N) <0.5% typical (20Hz-20kHz)
- Damping Factor (8 Ohms, 1kHz): >250
- Output Circuitry: Class D
- Amplifier/Load Protection: Output Overcurrent, Main Supply Rail Overvoltage, Chassis Temperature, Inrush Limiting, Mains Fuse
- Rear Panel:
- Controls: Ethernet, Channel bridge switch (Low-Z only), Remote standby, Preset recall (4), Remote Level (8), Remote Data
- Connectors (each channel):
- Input: Euroblock
- Output: Euroblock
- Power Requirements:
- AC Main 120VAC or 240VAC ±10% (factory set), 50–60Hz
- Power Cable Connector: 15A Edison, 3-Prong IEC
- Weights and Dimensions:
- Dimensions: 19” W x 3.50" H x 16.84” D (483mm x 89mm x 428mm)
- Airflow: IN through sides, OUT through front
- Unit Weight:
- 4250: 23 lbs (10.4 kg)
- 8250: 24.7 lbs (11.2 kg)
- Shipping Weight:
- 4250: 29.1 lbs (13.2 kg)
- 8250: 30.8 lbs (13.9 kg)
- Environmental: 40-120° F, (4-49° C) noncondensing
- Safety/Compliance: cTUVus, CE, FCC, RoHS