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SoundTube A3 AMP Internal Class AB Subwoofer Amplifier
SoundTube A3 AMP Internal Class AB Subwoofer Amplifier The Induction Dynamics A3 amplifier is engineered to pair seamlessly with audio/video pre-amplifiers and receivers featuring built-in low‑frequency crossover circuitry. Designed for applications with selectable crossover frequencies—recommended at 80 Hz with reverse polarity—the A3...
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SoundTube A3 AMP Internal Class AB Subwoofer Amplifier
The Induction Dynamics A3 amplifier is engineered to pair seamlessly with audio/video pre-amplifiers and receivers featuring built-in low‑frequency crossover circuitry. Designed for applications with selectable crossover frequencies—recommended at 80 Hz with reverse polarity—the A3 maintains distortion below 0.05% at 1 kHz, ensuring clean, powerful bass reproduction.
Featuring a patented non‑distorting frequency‑selective excursion limiter, the A3 delivers consistent performance at high output levels. Its flexible level control (±19 dB in 0.5 dB steps) and multiple switchable voltage gain settings make it ideal for home theaters, commercial AV, and dedicated subwoofer systems.
Key Features
- Power Output: 640 W @ 2.5 Ω; 500 W @ 4 Ω; 360 W @ 8 Ω
- Topology: Class AB amplifier
- Excursion Limiter: Patented non‑distorting frequency‑selective limiter (< 0.05% distortion @ 1 kHz, 1 W)
- Level Controls: ±19 dB in fixed 0.5 dB steps
Technical Specifications
- Frequency Response (±3 dB): 20 Hz – 20 kHz
- Damping Factor: 95 dBA
- Input Impedance: 300 Ω @ 60 Hz
- Voltage Gain: 28 dB, 38 dB, 48 dB (externally switchable)
- Output Type: Euroblock connector
- Power Requirements: 120/240 V AC, 50/60 Hz, 6 A slow‑blow fuse