QSC SPA4-100

The SPA4-100 four channel amplifier delivers 100 watts rms per channel into 4 or 8 ohms; the four channels can also be bridged in pairs, each pair providing up to 200 watts rms into 4 or 8 ohms. The SPA4-100 bridged pair channels can be switched into 70V or 100V direct drive mode providing up to 350 watts rms into a 70V or 100V output; when in 70V or 100V mode the 80Hz highpass filter is automatically engaged. Up to 100 watts per channel into 4 and 8 ohms — the outputs of the SPA4-100 model are designed to provide up to 100 watts per channel into Low-Z loads.

ENERGY STAR® qualified amplifier — The ENERGY STAR qualified SPA amplifiers employ an efficient class-D design to conserve energy and reduce operational cost.

Bridgeable outputs for higher power — Bridgeable outputs for higher power - Bridging the outputs of the SPA4-100 will deliver up to 350 watts into 70V or 100V when bridged.

Auto-Ramp provides quiet startup and power-down — The ENERGY STAR auto-ramp circuitry ensures quiet and fast power up from standby and seamless power-down following 25 minutes of inactivity, dramatically reducing power consumption.

Rack-mountable 1U, half rack width enclosure
— The SPA amplifers can be mounted in 1 RU, 1/2 rack space, and their clever joining brackets enable easy under-table and wall-mounting

Output Circuitry: Class D

Stereo Mode, watts per channel: 4Ω/8Ω dynamic, both channels driven 100watts

Bridged Mode, watts per channel: 200watts

70V & 100V: 350watts

Signal to Noise (A weighted, 20 Hz–20 kHz): >100 dB

Input Sensitivity: 1.23 Vrms (+4 dBu)

Maximum Voltage Gain: 25.0 dB (8Ω setting)

Frequency Response(20 Hz - 20 kHz): +0.1 dB, -0.1 dB

Input Impedance: >10 kΩ (balanced), >10 kΩ (unbalanced)

Size: 43 mm × 220 mm × 241 mm

Weight: 1,4kg

Includes: Power cable, quick start guide, connector kit, rack mount ears, mounting brackets