Adastra RS121 Slave Amplifier, 120W @ 2 Ohms or 100V Line

The Adastra RS121 Slave Amplifier is a high power class-D 100V line slave amplifier in a rack-mountable housing. Slave inputs accept standard line level audio from a mixer or RM series mixer amplifier. Slave outputs can be cascaded onto further RS slaves to build larger systems. All line level inputs are connectable via RCA sockets or hard-wired via removable screw terminals. A further removable screw terminal is provided for 100V input, which enables the RS series slave amplifier to extend an existing 100V installation by connecting directly to the 100V speaker feed, or indeed from a long distance 100V feed using standard double-insulated cable. A 24V terminal is provided for connection to a security or alert panel to mute the output if required during alarm triggering. Speaker outputs are either 100V or low impedance (switchable on RS121 and RS241) which is stable down to 2 Ohms, enabling multiple low impedance speakers to be connected if preferred. Designed to power medium to large installations from a mixer output or to expand existing systems.

Adastra RS121 Slave Amplifier Features

- 19-inch Rack-mountable 1U (120W, 240W) or 2U (360W, 480W)
- Efficient and lightweight Class-D amplifiers
- Line in and out on RCA or Euroblock terminals
- 24V mute contacts for alarm panel muting
- 100V signal input for extending existing speaker runs

Adastra RS121 Slave Amplifier Specifications

- Fuse rating: T1A
- Output power (RMS): 120W
- Power supply: 175-264Vac 50Hz (IEC)
- Input signal: Slave line in (RCA/screw terminal), 100V in (screw terminal)
- Output:
  - Signal: Slave line out (RCA/screw terminal)
  - Speaker: 100V or 2 Ω min. (screw terminals)
- Controls: Master volume
- Mute: 24V alarm contacts (screw terminal)
- THD: <1.0%
- Dimensions: 433 x 267 x 44 mm
- Weight: 4.8 kg

Adastra RS121 Slave Amplifier Supplied With

- Adastra RS series slave amplifier
- Rack or surface mounting ears
- IEC mains lead(s)