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)