Class-D Power Amplifiers
BA-2120D
Class-D Two-Channel Power Amplifier
19″ 1U • 2 × 120 W • 100 V / 4–16 Ω • Class-D
Class-D Power Amplifiers
BA-4120D
Class-D Four-Channel Power Amplifier
19″ 1U • 4 × 120 W • 100 V / 4–16 Ω • Class-D
The BA-4120D Class-D four-channel power amplifier uses switching power technology for high efficiency (up to 85%) and minimum power consumption, saving rack space and running cooler for a longer service life. With a rated output of 4 × 120 W, it can serve as a four-zone, multi-source public address system at minimum cost. Its 100 V high-impedance and 4–16 Ω low-impedance outputs suit both fixed PA installations and hi-fi stereo systems.
- 4 × 120 W Class-D
- 100 V & 4–16 Ω Outputs
- 85% Efficiency Auto Standby
- 19″ 1U Rack Mount
- Balanced Phoenix Inputs
- Full Protection
Key features
- Class-D digital power amplifier with switching power supply technology.
- High efficiency up to 85%, with minimum power consumption and less heat.
- Four-channel amplifier in a 19″ rack-mount, 1U chassis.
- Rated power output: 4 × 120 W.
- Separate speaker outputs on each of the four channels: 100 V line and 4–16 Ω low impedance.
- Balanced line inputs on Phoenix connectors, each with its own gain control.
- Switchable high-pass / low-pass filter on each channel (DIP switch).
- Auto standby after one minute without signal, with instant wake-up on input.
- Separate channel indicators for protection, clip, input and output.
- Full protection: short circuit, overload, high temperature, clip and DC.
- Wide AC input from 110 V to 230 V, 50–60 Hz.
Specifications
| Model | BA-4120D |
|---|---|
| Description | Class-D Four-Channel Power Amplifier |
| Rated Power Output | 4 × 120 W |
| Speaker Output | 4–16 Ω & 100 V |
| Frequency Response | Filter off: 20 Hz – 20 kHz (+1/−2 dB) Filter on: 70 Hz – 10 kHz (+1/−3 dB) |
| Input | 0.775 V (0 dBu), balanced, Phoenix connector |
| Input Impedance | 10 kΩ |
| THD | < 0.1% (1 kHz / −3 dBV) |
| S/N Ratio | > 80 dB |
| Crosstalk | > 60 dB (1 kHz, max. output) |
| Power Consumption | 600 W |
| Power Supply | Wide AC input 110 V – 230 V, 50–60 Hz |
| Dimensions (W × D × H) | 482 × 420 × 44 mm |
| Net Weight | 8.5 kg |
Product details
Tender specificationArchitect & engineer text, ready to paste into your spec
The power amplifier shall be a Class-D four-channel unit with switching power supply, in a 19″ 1U rack-mount chassis, with efficiency up to 85%. Rated output shall be 4 × 120 W, with separate 100 V and 4–16 Ω speaker outputs per channel. Each channel shall have a balanced Phoenix input (0.775 V, 10 kΩ) with its own gain control and a switchable filter. Frequency response shall be 20 Hz – 20 kHz (+1/−2 dB), with THD < 0.1%, S/N ratio > 80 dB and crosstalk > 60 dB. It shall include auto standby, protection / clip / input / output indicators, and short- circuit, overload, over-temperature, clip and DC protection. It shall operate from a wide AC input of 110–230 V, consume 600 W, measure 482 × 420 × 44 mm and weigh 8.5 kg.
