As a 4-channel amplifier with DSP & Dante®, the ADA 12K4 offers maximum power, precise sound and maximum reliability for professional touring and installation applications.
With 4 × 2700 W @ 4 Ω, a 24-bit/96 kHz DSP with 32-bit floating point and FIR, IIR and raised-cosine filters, it delivers outstanding audio quality and enables flexible sound processing. Thanks to two Dante® ports with integrated switch and Armonía Pro Audio Suite™ integration, the amplifier can be seamlessly integrated into networks.
Armonía Plus allows LD Systems speaker presets to be managed and updated on the DSP amplifier without the need for complex configurations. Alternatively, individual presets can be created and managed to optimise the system for specific requirements.
Versatile connection options with 4 analogue and 4 AES3 inputs as well as 4 analogue, 4 SpeakON and 4 AES3 outputs ensure maximum flexibility. The automatic input backup strategy guarantees uninterrupted operation.
The 4.3-inch touch display with rotary-push encoder and virtual metre bridge for monitoring the available headroom ensures intuitive operation. Flexible routing and mixing options enable customised signal routing for individual applications. Comprehensive limiters (peak, RMS, current, TruePower™) and Active DampingControl™ offer reliable system protection. In addition, together with HealthPlus monitoring in Armonía Plus, the LiveImpedance™ function offers comprehensive and detailed system monitoring.
The protection system against direct current, overvoltage/undervoltage, short circuits and overheating ensure maximum operational safety, bolstered by signal protection mechanisms such as clipping, VHF and long-term RMS protection. Thanks to an energy-efficient mains adapter with Power Factor Correction (PFC) and intelligent rail management, the amplifier is particularly efficient and reliable, making it ideal for professional use.
Specifications:
Sample rate converter: 140 dB Dynamic Range - 0.0001 % THD+N, 24 Bit @ 96 kHz
Current draw 240 V 1/8 power @ 4 ohms: 8.9 Arms
Operating voltage: 90 V AC - 264 V AC, 50 - 60 Hz
Per channel @ 2 Ohm ( asymmetrical ): 2000 W
Equalizer: Peaking, Allpass, Hi / lo-pass, Bandpass, Raised-cosine, Custom FIR, Parametric IIR:, Notch - Filter, Hi / Lo-Shelving
Input impedance: 20 kOhm ( sym. )
Per channel @ 4 Ohm ( symmetrical ): 2700 W
Supported topologies: Star, Daisy Chain
Latency: 2,5 ms
Limiter: Peak Limiter, RMS Power, TruePower™, RMS power supply limiter
Nominal voltage (+/- 10% ): 100 V AC - 240 V AC, 50 - 60 Hz
Max. output current: > 55 Apeak
Inputs digital AES3: 2 x XLR male ( Link )
Crossover: Butterworth, Bessel, Linear phase (FIR), 6 dB / oct to 48 dB / oct ( IIR ), Linkwitz-Riley
Bridge Mode 4 Ohm: 4000 W
Per channel @ 4 Ohm ( asymmetrical ): 3000 W
Power consumption 100 V idle: 42 W
Connectivity: Integrated switch, 2 x Gigabit Ethernet ports, Ethercon connectors
Bridge Mode 8 Ohm: 5400 W
Memory / presets: Virtually unlimited speaker presets, 50 amplifier snapshots
Crosstalk ( 1 kHz ): - 75 db typ
Power consumption 240 V idle: 42 W
Delay: 2 s ( input ) + 100 ms ( output )
Power consumption 240 V Standby: 17 W
Thermal loss 240 V 1 / 8 Power @ 4 Ohm: 8,9 Arms
Internal precision: 32 bit floating point
Damping control: Active DampingControl™, LiveImpedance™ measurement
Power consumption 240 V 1 / 8 power @ 4 ohms: 1940 W
Max. Output power: 180 Vpeak
Power supply type: Switch mode power supply with power factor correction (PFC), SRM
Per channel @ 8 Ohm ( symmetrical ): 1800 W
Current draw 1/8 power @ 4 ohms: 16,5 Arms
Inputs analog: 4 x XLR male, 4 x XLR female
DA converters: 117 dB-A Dynamic Range - 0.003 % THD+N, 24 Bit Tandem™ @ 48 kHz
Output impedance at 100 Hz: 30 mOhm
Product type: Amplifier
Connection type: IEC C 20 ( 20 A max )
Power consumption 1 / 8 power @ 4 ohms: 1570 W
THD+N ( 0.1 W to half power): < 0.1 % ( typical < 0.05 % )
SMPTE IMD ( 0.1 W to half power ): < 0.1 % ( typical < 0.05 % )
CMRR: 65 dB typ
AD converter: 125 dB-A Dynamic Range - 0.005 % THD+N, 24 Bit Tandem™ @ 48 kHz
Per channel @ 8 Ohn ( asymmetrical ): 1900 W
Inputs digital DANTE / AES67: 2 x XLR Ethercon ( 4 Audio Channels )
Thermal loss 1 / 8 Power @ 4 Ohm: 1670 BTU / h
Control: Multitouch capacitive, Rotary encoder 20 steps / turn with pushbutton
Type: 4-channel
Brightness: 600 nit
Per channel @ 2 Ohm ( symmetrical ): 2000 W
Resolution: 480 x 272, 4.3” diagonal
Remote Interface: ArmoníaPlus or other preferred software
Power consumption 100 V Standby: 16 W
