Premium 70V amplifier

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Made in the USA for tower speakers with 70V transformers.
Also see Premium low impedance amplifier.

Features

• Power switching through control cable from carillon
• Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
• Indicators
  • Power-on: Green LED
  • Signal: Green LED (1 per channel)
  • Clip: Red LED (1 per channel)
• Amplifier Protection
  • Short circuit
  • Open circuit
  • Thermal
  • Ultrasonic
  • RF
• Load Protection
  • On/off muting
  • DC fault detection
  • Power supply shutdown
• Rack mountable with chassis less than 16" (40.6 mm) deep
• 1-dB recessed, detented gain controls for fast, accurate, and repeatable settings
• Tamper-proof security cover for gain controls
• Recessed rear DIP switches for easy selection of stereo, parallel, or bridged mode operation, and enabling/disabling low-frequency filter protection
• Low-noise variable-speed fans with rear-to-front airflow help keep amplifiers and racks cool

Specifications and Ratings

• Frequency Response: 20 Hz–20 kHz: 20 Hz–20 kHz, ±0.2 dB
• Noise: -106 dB
• Input Sensitivity into 8Ω: 1.26 Vrms
• Max Voltage Gain: 35 dB
• Output Circuitry: Class AB+B

Output Power

• 400 W 70V line, 20 Hz–20 kHz, Less than 0.05% THD (x 2 channels)
• 800 W 140V line, 20 Hz–20 kHz, Less than 0.05% THD (single channel bridge mode)

Distortion

• SMPTE-IM: < 0.02%
• THD 4Ω and 8Ω
  • 20 Hz–20 kHz: 10 dB below rated power: < 0.01%
  • 1.0 kHz and below: full rated power: < 0.01%

Current Draw

(pink noise program)

• Typical, 1/8 power 70V line, 120 V: 8.7 A
• Severe, 1/3 power 70V line, 120 V: 13.0 A

Power Options

• 120 VAC 50-60 Hz
• 230 VAC 50-60 Hz

Certifications

• UL Listed
• CE

Physical

• Height: 3.5" (8.9 cm) 2U rack spaces
• Width: 19" (48.3 cm) rack mounting
• Depth: 14" (35.6 cm) to rear support ears
• Weight: 21 lb (9.5 kg)
• Shipping Weight: 27 lb (12.3 kg)