Need help?Do you have a question about the Beta Three DT Series and is the answer not in the manual?
The Beta Three DT Series Professional Power Amplifier is a multi-channel professional power amplifier designed for outstanding reliability and high-efficiency performance in sound reinforcement applications. Its robust design incorporates an efficient and safe thermal distribution structure, a concise and matured output circuit, and precise detection and protection controls, ensuring stable operation even in harsh working conditions.
The DT Series amplifier is engineered to provide powerful and clear audio output across various professional sound reinforcement scenarios. It features multiple power levels, allowing users to match the amplifier to their specific application needs. The amplifier offers three input sensitivity options, providing flexible integration with different audio systems.
A key functional aspect is its unique limiting function, which prevents output distortion even when the input signal is excessively high. This feature includes two selectable limiting modes, allowing users to optimize performance based on the type of loudspeakers being used. One mode aims to prevent clipping entirely, ensuring flawless sound quality, while the other allows for a controlled level of distortion (around 10%) suitable for applications requiring a broader dynamic range, such as driving high-power subwoofers.
The amplifier also incorporates three input LINK switches, which enable flexible use of adjacent channel input terminals. This simplifies the input wiring in larger setups, making installation and configuration more convenient. The high-power supply system and efficient output level contribute to its strong output capability, delivering robust audio performance.
For ease of use, the DT Series includes accurate and intuitive status indicators and independent volume knobs for each channel. These controls allow for easy monitoring of the amplifier's working status and straightforward operation.
The DT Series amplifier is designed for versatile and flexible applications. Its standardized design and comprehensive product line cater to the diverse needs of the professional sound reinforcement industry. The amplifier's comprehensive interface and simplified control functions enhance its usability in various setups.
When setting up the amplifier, users can choose from three input sensitivity options (0.775V, 1V, or 32dB) to match different preamplifiers and system requirements. The 0.775V mode is suitable for preamplifiers with 0dBu level output indications, allowing for easy adjustment to achieve rated power output. The 1V mode offers similar benefits for preamplifiers with 0dBu output, while the 32dB mode (x40 gain) is ideal for array use of multiple amplifiers or balancing gain in active crossovers, especially when preamplifier outputs have higher levels (>3.5 Vrms), reducing noise and interference during long-distance transmissions.
The LINK switches are particularly useful for simplifying wiring in multi-amplifier systems. By linking channels, a single input signal can be distributed to multiple channels or even to other amplifiers, reducing cable clutter and setup complexity. However, users are advised not to link too many devices to avoid signal interference and loss.
The front panel provides clear indicators for power/protect, signal, and peak (clipping) status for each channel. The power/protect LED indicates power ON/OFF and system status (green for normal, orange for protection mode). The signal LED reflects the output signal, while the peak LED illuminates when the input signal is too large, indicating potential distortion. Users are cautioned to reduce volume or input amplitude if the peak indicator flashes frequently to prevent sound quality deterioration and loudspeaker damage.
The amplifier's operation procedure involves a systematic power-on sequence: ensuring correct cable connections, checking for short-circuits or low load impedance, verifying power grid consistency, turning on sound source devices and pre-amps first, then the amplifier, and gradually adjusting volume. Power-off follows the reverse sequence, starting with minimizing volume and turning off the amplifier before other devices.
The DT Series amplifier is built with a focus on reliable service life, even under harsh conditions. It incorporates proven technology and comprehensive protection circuits to ensure efficient use and prevent damage.
The protection and cooling system is a critical maintenance feature. It includes power input surge protection, startup delay, and overload protection, which drastically reduce the failure rate and safeguard both the amplifier and connected loudspeakers from improper operation or environmental issues. The output stage transistor's safe working area is fully protected against output overload, short-circuits, load abnormalities, and wiring errors.
Output DC protection and high-frequency continuous energy restriction prevent damage to the sound reinforcement system and loudspeakers from malfunctions. The thermal protection system, featuring precise and sensitive zero-temperature-difference temperature control and cut-off temperature protection, ensures the equipment operates safely even in demanding environments.
For maintenance and troubleshooting, the manual provides clear guidance. Users are advised to contact local dealers or professional maintenance personnel if the equipment malfunctions. Common problems like no sound, power indicator not lit, or distorted sound are addressed with specific troubleshooting steps, such as checking AC connections, circuit breakers, signal cables, volume knobs, and load impedance.
The amplifier's design emphasizes safety, with warnings against opening the chassis due to high voltage, touching output terminals with warning signs, and obstructing cooling vents. Proper ventilation is crucial, requiring at least a 10cm gap around air vents. Users are also warned against inserting metal objects or flammable materials into vents and exposing the equipment to rain or moisture. The power cord should be unplugged when the amplifier is not in use for safety. All components marked with a triangle inside the product should only be replaced with components of the same specifications during maintenance.
General| Frequency Response | 20Hz - 20kHz |
|---|---|
| Input Impedance | 20k ohms |
| Protection | DC, thermal, overload, short circuit |
| Connectors Input | XLR |
| Connectors Output | Speakon |
| Power Supply | 100-240V~ 50/60Hz |
To Next Page
