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25D amplifier
25D amplifier
Installation specific four channel amplifier
- Maximum output power 4 x 1800/900 W into 4/8 Ω
- Monitoring display, colour TFT touchscreen, 4.3" / 480 x 272 pixel
- 12 configurable GPIOs (8 x GPI, 4 x GPO)
- Milan-enabled
Product description
The 2 RU 25D amplifier provides power output optimized for smaller installation systems, while offering the same full DSP feature set as our high-output amplifiers.
The 25D amplifier has a dynamic range of 112 dB (unweighted) and is designed to drive high voltage d&b loudspeakers while providing comprehensive management and protection capabilities.
The user interface consists of a 4.3" (480 x 272 pix.) colour touchscreen, which provides comprehensive information about device configuration and enhanced status monitoring.
The 25D also includes enhanced energy saving features, power efficiency and Automatic Wake up for environmentally responsible and sustainable Green Building requirements.
Powerful signal processing extends the level of functionality of the onboard features. These include a range of loudspeaker-specific filter functions plus two user-definable 16-band EQs, which facilitate system tuning.
This device contains extended input management functionalities with separate Input Gain control for each input channel, General Purpose Inputs/Outputs (GPIO) and a General Fault connector. Enhanced system status monitoring functions such as Input and Load monitoring ensure suitability in an emergency situation.
Input routing
The 25D amplifier enables up to 16 input channels with eight Milan audio inputs and provides four analogue inputs as well as four AES3 channels with corresponding link outputs. Each input channel can be routed to any of the output channels A to D. Phoenix™ Euroblock connectors A1-A4 are used as analogue inputs and link outputs, input connectors D1/2 - D 3/4 as digital inputs. Link outputs D1/2 and D3/4 are supplied as digital outputs.
System status monitoring
d&b amplifiers incorporate specific functions to check, monitor and control a d&b system in a specific installation scenario.
The System check feature can verify the status of a complete reinforcement system by measuring the impedance of the connected loudspeakers. Each driver in the system is checked and compared to the default impedance values for each cabinet. This calibration ensures that each loudspeaker performs within a tolerance band and indicates possible damage to system components.
The Input monitoring function can detect an incoming pilot signal regardless of whether this input is routed to an output.
The Load monitoring function can detect a possible loudspeaker malfunction. This feature automatically checks load impedance to calculate individual driver status and report any failure.
GPIO and General Fault Contact
The d&b installation amplifiers incorporate separate Euroblock connectors for General Purpose Input / Output (GPIO) and a fault contact. The GPIO connector offers 8 GPI and 4 GPO pins providing additional control lines. This enables the use of external devices to control and detect certain functionalities within the 25D amplifier.
The GPIOs can be configured to power the device, mute individual (or all) channels or change the AmpPreset. They can also be used to check the mains voltage, power, or individual channel status. The separate fault contact allows a general device error to be remotely indicated.
CF = 12 dB at 4 / 8 ohms
29,3 lb