The ADA 12K4 SINGLE RACK is a pre-configured 4-channel amplifier rack featuring one ADA 12K4 power amplifier with DSP and Dante®, delivering 4 × 2700 W @ 4 Ω. High-resolution processing (24-bit / 96 kHz with 32-bit floating point and FIR/IIR/raised-cosine filters) supports modern system optimisation, including EQ, crossover and delay.
The 2U ADA SPP patch panel with clear labelling and premium Neutrik® connectors gives direct access to amplifier:
The 4 × XLR analogue signals can be linked via the AES72 RJ-45 ports using additional Audio over Cat (AoC) adapters. Two Dante® ports with support fast network and Armonía Pro Audio Suite™ integration.
Armonía Plus allows LD Systems speaker presets to be managed and updated on the amplifiers without the need for complex configurations. Alternatively, custom presets can be created and managed to optimise the system for specific requirements.
Everything is built into a 4U shockmount rack with two removable doors for protected transport and fast access.
Specifications:
Scope of delivery: 1 × LDADA12K4, 1 × LDADASPP
Material: Steel
Colour: Black
Weight: 5.75 kg
Width: 480 mm
Height: 88 mm
Depth: 249 mm
Rack height: 2 U
Product type: Amplifier
Type: 4-channel
Inputs analog: 4 x XLR male, 4 x XLR female
Inputs digital AES3: 2 x XLR male ( Link )
Inputs digital DANTE / AES67: 2 x XLR Ethercon ( 4 Audio Channels )
Max. input level: 24 dBu
Crosstalk ( 1 kHz ): - 75 db typ
Input impedance: 20 kOhm ( sym. )
CMRR: 65 dB typ dB
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 % )
Output impedance at 100 Hz: 30 mOhm
AD converter: 125 dB-A Dynamic Range - 0.005 % THD+N, 24 Bit Tandem™ @ 48 kHz
DA converters: 117 dB-A Dynamic Range - 0.003 % THD+N, 24 Bit Tandem™ @ 48 kHz
Sample rate converter: 140 dB Dynamic Range - 0.0001 % THD+N, 24 Bit @ 96 kHz
Internal precision: 32 bit floating point
Latency: 2,5 ms
Memory / presets: Virtually unlimited speaker presets, 50 amplifier snapshots
Delay: 2 s ( input ) + 100 ms ( output ) ms
Equalizer: Peaking, Allpass, Hi / lo-pass, Bandpass, Raised-cosine, Custom FIR, Parametric IIR:, Notch - Filter, Hi / Lo-Shelving
Crossover: Butterworth, Bessel, Linear phase (FIR), 6 dB / oct to 48 dB / oct ( IIR ), Linkwitz-Riley
Limiter: Peak Limiter, RMS Power, TruePower™, RMS power supply limiter
Damping control: Active DampingControl™, LiveImpedance™ measurement
Resolution: 480 x 272, 4.3” diagonal
Brightness: 600 nit
Control: Multitouch capacitive, Rotary encoder 20 steps / turn with pushbutton
Per channel @ 2 Ohm ( symmetrical ): 2000 W
Per channel @ 2 Ohm ( asymmetrical ): 2000 W
Per channel @ 4 Ohm ( symmetrical ): 2700 W
Per channel @ 4 Ohm ( asymmetrical ): 3000 W
Per channel @ 8 Ohm ( symmetrical ): 1800 W
Per channel @ 8 Ohn ( asymmetrical ): 1900 W
Bridge Mode 4 Ohm: 4000 W
Bridge Mode 8 Ohm: 5400 W
Max. Output power: 180 Vpeak
Max. output current: > 55 Apeak
Power consumption 100 V Standby: 16 W
Power consumption 100 V idle: 42 W
Power consumption 1 / 8 power @ 4 ohms: 1570 W
Current draw 1/8 power @ 4 ohms: 16,5 Arms
Thermal loss 1 / 8 Power @ 4 Ohm: 1670 BTU / h
Power consumption 240 V Standby: 17 W
Power consumption 240 V idle: 42 W
Power consumption 240 V 1 / 8 power @ 4 ohms: 1940 W
Current draw 240 V 1/8 power @ 4 ohms: 8.9 Arms
Thermal loss 240 V 1 / 8 Power @ 4 Ohm: 8,9 Arms
Power supply type: Switch mode power supply with power factor correction (PFC), SRM
Nominal voltage (+/- 10% ): 100 V AC - 240 V AC, 50 - 60 Hz
Operating voltage: 90 V AC - 264 V AC, 50 - 60 Hz
Connection type: IEC C 20 ( 20 A max )
Connectivity: Integrated switch, 2 x Gigabit Ethernet ports, Ethercon connectors
Supported topologies: Star, Daisy Chain
Remote Interface: ArmoníaPlus or other preferred software
XLR 3-pole female (analog in): 4
XLR 3-pole female (AES3 in): 4
RJ-45 (AES72): 2
RJ-45 Ethernet (Dante®/AES67): 2
speakON® 4-pole male: 4
speakON® 8-pole male: 1
Mains input connector type: Mains plug device outdoor female & TRUE1®
Rack width: 19"
Installation depth: 235 mm
