AtlasIED HT47 4W 70.7V Line Matching Transformer

The AtlasIED HT47 is a high-quality, external-mount transformer built for 70.7 V distributed audio systems. Featuring audio-grade laminations, it ensures signal integrity across compact commercial or industrial sound installations.

With selectable primary taps at 0.5, 1, 2, and 4 W feeding an 8 Ω secondary, the HT47 supports flexible amplification schemes. It offers a flat frequency response from 60 Hz to 12 kHz (±1 dB) and maintains low insertion loss at ≤ 1.0 dB.

Key Features

• Audio‑grade laminations: Clean, accurate signal transfer
• Four tap power options: 0.5 / 1 / 2 / 4 W selectable
• Low insertion loss: Maximum of 1.0 dB
• Flat frequency range: 60 Hz–12 kHz (±1 dB)
• External mountable: Ideal for installation outside speaker enclosures

Technical Specifications

• Power Rating: 4 W
• Primary Voltage: 70.7 V
• Power Taps: 0.5, 1, 2, 4 W
• Secondary Impedance: 8 Ω
• Frequency Response: 60 Hz–12 kHz (±1 dB)
• Insertion Loss: ≤ 1.0 dB
• Dimensions (HxWxD): 1.63 × 1.97 × 0.75 in (41.4 × 50.0 × 19.1 mm)
• Shipping Weight: 1.02 lb (0.46 kg)
• Warranty: 5 years (60 months)