This QSC SPA4-100 4-Channel Amplifier are four, half-rack RU, convection cooled power amplifiers delivering two or four channels of up to 200 watts per channel into 4 Ω and 8 Ω. These amps can also be bridged to supply up to 400 watts into 4 Ω and 8 Ω, and up to 350 watts into 70 V or 100 V loads making them extremely flexible for Low-Z or High-Z applications. Utilizing an advanced Class-D amplifier design and Universal Power Supply, the SPA Series are efficient, allowing them to be convection cooled and are ENERGY STAR qualified with quiet auto-ramp standby functionality. The SPA Series are housed in an unobtrusive black painted 1/2 RU chassis with unique mounting hardware enabling rack, table and wall mounting capabilities.
QSC SPA4-100 4-Channel Amplifier Features:
- Up to 200 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 — Bridging the outputs of the SPA4-100 will deliver up to 175 watts per channel pair 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
Why not buy this QSC SPA4-100 4-Channel Amplifier today?
QSC SPA4-100 4-Channel Amplifier Specifications:
| Specifications | SPA4-100 |
|---|---|
| Stereo Mode Watts Per Channel 8 Ω dynamic, both channels driven |
100 W |
| 4 Ω dynamic, both channels driven | 100 W |
| Bridged Mode Watts per channel pair 8 Ω & 4 Ω |
200 W |
| 70 V & 100 V | 175 W* |
| Signal to Noise (A weighted, 20 Hz-20 kHz) | >100 dB |
| Input Sensitivity | 1.23 Vrms (+4 dBu) |
| Maximum Voltage Gain | 25.0 dB |
| Output Circuitry | Class D |
| Frequency Response (20 Hz - 20 kHz) | Frequency Response (20 Hz - 20 kHz) |
| Input Impedance | >10 kΩ (balanced), >10 kΩ (unbalanced) |
| Maximum Input Level | 12.3V (+24 dBu) |
| Highpass Filter | Switchable 80 Hz when Bridged in 70V & 100V |
| Front Panel Indicators | Power, per channel Signal, per channel Protect/Limit |
| Controls | 4Ω/8Ω/70V Bridge Highpass On/100V Bridged Highpass On per channel pair |
| Dimensions (HWD) inches | 1.7 x 8.7 x 9.5 / 1RU |
| Dimensions (HWD) mm | 43 x 220 x 241 / 1RU |
| Weight (Net) | 4.0 lb / 1.4 kg |
| Weight (Shipping) | 6.5 lb / 2.5 kg |
| Agency Approvals | UL, CE, ENERGY STAR, RoHS/WEEE compliant, FCC Class B (Conducted and Radiated emissions), UL 2043 witd PL-Kit |
| Carton Contents | Power cable, quick start guide, connector kit, rack mount ears, mounting brackets |
