Amplifier, Spa4-100-Na, 100-240v

The SPA Series amplifiers from QSC are four half rack 1U, convection cooled power amplifiers delivering two or four channels of up to 200 watts per channel into 4Ohms and 8Ohms. These amps can also be bridged to supply up to 400 watts into 4Ohms and 8Ohms and up to 350 watts into 70V or 100V 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.

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.

Efficient Amplifier with Auto-Ramp
The SPA Series amplifiers utilize a highly efficient class-D design that conserves energy to reduce operational costs and requires no active cooling. They are ENERGY STAR qualified with auto-ramp circuitry that seamlessly transitions to/from Standby with no audible pops.

Amplifier Protection
Both amplifiers in the SPA Series feature rms and thermal limiting, as well as protection against over current, short circuit and under/ over voltage.

Protection, Control and Mounting
The SPA Series provide rms and thermal limiting as well as over-current and short circuit protection so you can employ them with confidence. They also come with multiple mounting options. Every SPA Series comes with a complete mounting kit allowing it to be rack mounted by itself or with a second unit in a 1RU space. Included connecting brackets provide additional strength when rack mounting two amps together, but also make for simple under-table or wall mounting (like behind a TV). The SPA Series can also be mounted in plenum spaces when used with the Plenum Kit accessory.

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 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 amplifiers can be mounted in 1 RU, 1/2 rack space and their clever joining brackets enable easy under-table and wall-mounting.