The SPA Series amplifiers from QSC are two half rack 1U, convection cooled power amplifiers delivering two or four channels of 60 watts per channel into 4Ω and 8Ω. These amps can also be bridged to supply 200 watts into 4Ω and 8Ω, and up to 250 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 amazingly efficient allowing them to be convection cooled and are ENERGY STAR® qualified with quiet auto-ramp standby functionality. The SPA2-60 and SPA4-60 are housed in an unobtrusive black painted 1/2 RU chassis with unique mounting hardware enabling rack, table and wall mounting capabilities.

Features

Up to 60 watts per channel into 4 and 8 ohms — The outputs of the SPA2-60 and SPA4-60 are designed to provide 60 watts per channel into Low-Z loads

ENERGY STAR® qualified amplifier — The SPA2-60 and SPA4-60 are EnergyStar qualified amplifiers; efficient class-D amplifiers that conserve energy and require no active cooling, so they reduce operational costs.

Bridgeable outputs for higher power — Bridging the outputs of the SPA2-60 and SPA4-60 provide up to 200 watts into low impedance, and up to 250 watts into 70V or 100V providing outstanding flexibility.

Auto-Ramp provides quiet startup and power-down — The EnergyStar Auto-Ramp circuitry ensures quiet and fast power up from Standby and seamless power-down following 28 minutes of inactivity, dramatically reducing power consumption.

Rack-mountable 1U, half rack width enclosure — The SPA2-60 and SPA4-60 can be mounted in 1/2 RU reducing rack space requirements. In addition their clever joining brackets enable easy under-table and wall-mounting.

SPECIFICATIONS

SPA2-60 SPA4-60 SPA2-200 SPA4-100

Stereo Mode Watts Per Channel

8Ω dynamic, both channels driven 60 W 60 W 200 W 100 W

4Ω dynamic, both channels driven 60 W 60 W 200 W 100 W

Bridged Mode, watts per channel

8Ω & 4Ω 200 W 200 W 400 W 200 W

70V & 100v

250 W 250 W 350 W 350 W*

Signal to Noise (A weighted, 20 Hz-20 kHz)

>100 dB >100 dB >100 dB >100 dB

Input Sensitivity

1.23 Vrms (+4 dBu) 1.23 Vrms (+4 dBu) 1.23 Vrms (+4 dBu) 1.23 Vrms (+4 dBu)

Maximum Voltage Gain

25.0 dB 25.0 dB 25.0 dB 25.0 dB

Ouput Circuitry

Class D Class D Class D 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)

3.5 lb / 1.6 kg 3.5 lb / 1.6 kg 4.0 lb / 1.4 kg 4.0 lb / 1.4 kg

Weight (Shipping)

6 lb / 2.3 kg 6 lb / 2.3 kg 6.5 lb / 2.5 kg 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