Zapco - ST-500XM III - Class D, Mono Power 1Ω: 1 x 400W, 2Ω: 1 x 300W

• Model: ST-500XM III
• Class: Class D (Mono)
• Power Output:
 • 400 W × 1 @ 1 Ω
 • 300 W × 1 @ 2 Ω
 • 200 W × 1 @ 4 Ω
• Total Harmonic Distortion (THD): < 0.2% at rated power
• Signal-to-Noise Ratio: > 85 dB
• Efficiency: > 85%
• Frequency Response: 10 Hz – 200 Hz (±1 dB)
• Input Sensitivity: 0.25 V to 5 V
• Controls / Features:
 • Variable input gain
 • Electronic crossover (variable)
 • Subsonic filter
 • Bass boost (variable)
 • Phase control selector
 • Optional remote level control interface
• Physical Dimensions (Net): ~ 120 mm × 58 mm × 300 mm
• Overall Dimensions (with end caps): ~ 120 mm × 58 mm × 325 mm
• Use Case: Designed for subwoofer or bass channel use in compact or powerful audio systems