The Helvia 4120CA PA power amplifier features four independent channels, each with a line transformer and 120 W of power on a 100 V line. Each channel can operate on 70/100 V constant-voltage lines or at low impedance (4–16 Ω), while the HPF has a cutoff frequency of 400 Hz.
The channels feature volume controls, VU-meter and clip LED indicators, and rear-panel gain controls. The balanced inputs and outputs connect via XLR, while the power outputs use Phoenix (Euroblock) connectors. Features include power-on muting, signal limiting, thermal protection, and current limiting. The fan adjusts its speed according to the internal temperature.
- Type: PA power amplifier
- Channels: 4
- Power per channel at 100 V: 120 W
- Output lines: 70/100 V and 4–16 Ω
- HPF: 400 Hz cutoff frequency
- Frequency response: 80–20 kHz or 400 Hz–20 kHz
- Damping factor: >300 at 100 Hz
- THD: <0.1% at 1 W and 1 m
- Inputs and outputs: Balanced XLR
- Power output connections: Phoenix (Euroblock)
- Cooling: Fan with speed control based on internal temperature
- Rack format: 19″, 2U
- Width: 484 mm
- Height: 88 mm
- Depth: 400 mm
- Weight: 13.5 kg
Technical Specifications
- Amplifier Type
- PA Amplifier
- Type
- Power Amplifier
- Channels
- 4
- Zones
- -
- Power (8Ω)
- -
- Power (4Ω)
- -
- Power (100V)
- 120 W
- Weight
- 13.5 kg
Additional Specifications
- Radio
- No
- Cooling system
- No
Connectivity
- RCA
- No
- XLR
- No
- Mini Jack (3.5mm)
- No
- Jack (6.3mm)
- No
- USB
- No
- Ethernet
- No
- Bluetooth
- No
- Mic In
- No
Dimensions
- Width
- 484 mm
- Height
- 400 mm
- Length
- 88 mm
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.