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Home / Products / PA Systems — Public Address / TF-DHGHUBO 8-zone power amplifier
TF-DHGHUBO 8-zone power amplifier
TF-DHGHUBO 8-zone power amplifier
PA Systems — Public Address · TF - PA System
The 8-zone power amplifier has a built-in 500W digital power amplifier and integrates 8 independent power zones. It can be installed in the broadcasting room or remote machine room, and is connected to the system via Ethernet to share the network audio source. It also allows 4- channel local audio input, making it the preferred device for building small and medium-sized broadcasting systems.
Features
- Supports speaker loop grounding, open circuit and short circuit detection, and automatic amplifier protection in case of short circuit fault.
- Supports 3/4-wire speaker loop wiring, fire alarm broadcasting, audio control and forced cutting, and maximum volume output.
- It has 8 programmable trigger input online interfaces, which can trigger the pre-programmed voice messages to the specified partitions.
- It has 8 programmable trigger output online interfaces, which can output short-circuit voltage-free relay control signals to third-party equipment to achieve online automatic control.
- Supports the power amplifier to enter power saving mode when there is no signal input to save energy.
- Supports connection with linkage fire alarm controller to realize fire alarm linkage control.
- Provides a DC 24V backup power input interface (24V DC power provided by an external DC power charger) to realize main and backup power supply.
Technical specifications
| AC power input voltage | ~ 220V ± 15 % , 50-60Hz |
|---|---|
| AC power input current | ＜3.5A |
| DC power input voltage | DC24V , 19-30V adaptive |
| DC power input current | ＜30A |
| Fuse specifications | 250V/ 6.3A , slow type |
| Number of output partitions | 8 |
| Output voltage | 100V |
| Output type | Transformer output |
| Output power | 500W ( maximum output of a single partition ) |
| Distortion | <0.3% |
| Frequency response | 60Hz - 18kHz |
| Signal-to-Noise ratio | ＞68dB |
| Power consumption | 95W |
| Override type | 3-wire and 4-wire |
| 4-wire override output voltage | 24V |
| Amplifier status detection time | ＜0.5S |
| Partition detection status | Short circuit, open circuit, short circuit to ground |
| Partition detection time | ＜0.5S |
| Line input number | 4 channels (2 channels of XLR interface, 2 channels of RCA interface) |
| Line input sensitivity | ± 385mV (balanced), 775mV (unbalanced), 10mV (unbalanced) |
| Line input impedance | 20KΩ (balanced), 10KΩ (unbalanced) |
| 8-channel relay programmable output | Short circuit, no voltage |
| 8-channel programmable trigger inputs | Short-circuit input, short-circuit input with detection, voltage input |
| Short circuit mode | 3.3V voltage, short contact trigger, no linkage line monitoring function |
| Short-circuit mode with detection | 3.3V voltage, short contact trigger, support linkage line fault alarm |
| Cooling method | Air-cooled |
| Protection method | Delay/overtemperature/short circuit/overload |
| Dimensions ( L×D×H ) | 484×4 65.1 ×100.7 mm |
| Weight | 11.67 kg |
| * This power is measured according to CEA-2006-B/CEA-490-A standard using 20ms pulse 1kHz sine wave at 1% total harmonic distortion . * Based on GB4943.12022 test method: measured under 1kHz normal wave and rated load 1/8 power condition . | |
