Specifications
General Specifications
- Number of output channels: Four
- Total power output, all channels driven: 20,000 Watts RMS (M20), 10,000 Watts RMS (M10) and 6,000 Watts RMS (M06)
- Audio inputs: 4x Analogue, 2x AES3 and 4x Dante™ / AES67 (factory fitted option)
- Digital Signal Processing: High performance 96kHz DSP on all inputs and outputs
- Control, monitoring and system status alarms: Ethernet network, RS232 & RS485, Volt-free relay and contact closure ports. Heartbeat system health output
- Power-save modes: Standby after user defined time with fast wake up on audio, Deep ECO sleep after user defined time with wake up on command
- System standby and wakeup Network command, audio detection & contact closure
Power Output |
|
|
|
Model |
44 series C20 |
44 series C10 |
44 series C06 |
Power specification |
RMS output power per channel, all channels driven with continuous program material and a nominal ambient temperature of 40ºC / 105ºF |
Crest Factor of 4 (12dB), 2-Ohm nominal load |
5,000W |
2,500W |
1,500W |
Crest Factor of 2.8 (9dB), 4-Ohm nominal load |
3,000W |
2,500W |
1,500W |
Crest Factor of 2 (6dB), 8-Ohm nominal load |
1,500W |
1,500W |
1,500W |
Bridged, per channel pair, 4 Ohm load |
10,000W |
5,000W |
3,000W |
25V line (CV) operation, Crest Factor 4 (12dB) |
1250W |
885W |
685W |
70V line (CV) operation, Crest Factor 4 (12dB) |
3500W |
2,500W |
1,500W |
100V line (CV) operation, Crest Factor 4 (12dB) |
5,000W |
2,500W |
1,500W |
Audio Performance
- Amplifier topology: Linea Research high performance Class D
- Amplifier modulation scheme: Low feedback, multiple loop, with feed-forward error correction
- Dynamic range: Analogue input, better than 113dBA typical
- Measured relative to the amplifier output: AES / Dante™ input, better than 114dBA typical
- Gain (with all the DSP level controls set to 0dB): 32dB
- Frequency response, 4 Ohm load: <7Hz to >30kHz, 4 Ohms, -2.5dB points
- Total harmonic distortion, THD: <0.05% typical, 1kHz signal, AES17 filter, 4 Ohm load
- Inter-channel crosstalk, worst case combination: better than -85dBr at 1kHz and -75dBr at 10kHz
- Slew rate: >60V per microsecond typical
- Damping factor (Ref 8 Ohms): >800 at amplifier output (see Linea’s “Damping factor debunked” white paper)
- Maximum analogue input level: +20dBu
- Analogue input sensitivity range for full output: 0dBu to +20dBu, continuously adjustable
- Analogue input (four channels): Input 20k Ohm, electronically balanced, link directly connected to input
- Analogue ground scheme: AES48 standard compliant
- AES3 input (two audio channels): Transformer isolated with unique active cable equalisation for extended range
- AES3 link (two audio channels): Active AES3 signal regeneration. Automatic direct bypass to the AES3 input ensuring the audio signal will still flow even when the amplifier is powered down
- AES3 supported sampling rates: 24kHz to 192kHz (auto locking)
Digital Signal Processing
- Resolution: 40 bit, Linea Research proprietary algorithms
- Sample rate: 96kHz throughout
- Physical inputs to DSP drive modules: 4x analogue, 2x AES & 4x Dante™ inputs can be routed to four DSP drive modules
- Drive module input processing: Input signal routing, delay, gain, HPF, Phase, Mute, EQ: 2x low shelf, 6x PEQ / band pass and FIR shelving filters
- Drive module output processing: Source, delay, gain, Phase, Mute, crossover filters, VX limiters, EQ: low shelf, 8x PEQ / band pass and shelving filters
- Preset management 10 snapshots for device wide setup, 50 presets for loudspeaker settings
- Presets can be recalled to sets of outputs or individual outputs as required
Unique high performance processing
Overlays: Twelve additional independent overlays of EQ, Delay and Gain, Flexible grouping for effective control of many amplifier channels in large systems
Class leading VX limiters: See the ‘speaker protection systems’ section
Hardman crossover filters: Better out of band rejection than Linkwitz-Riley
LIR crossover filters: Unique Linear Phase alignments without the compromises of FIR filters
Power Supply
- Topology (main power supply): Linea Research high performance Series Resonant
- Topology (auxiliary and standby supplies): Low quiescent Eco-Flyback
- Internally stored energy: >600 Joules
- Nominal mains input voltage range: 85V to 240V, Power supply automatically detects voltage and configures accordingly
- Mains input frequency range: 47Hz to 63Hz
- Mains inrush current (max for <10ms): 6A at 115V, 12A at 230V
Protections Systems
Under all circumstances the control and protection systems will endeavour to deliver the maximum power possible for a given set of conditions, applying limiters only in extreme circumstances. Muting will only occur when a dangerous situation is detected, normal operation automatically resuming when the condition clears.
System protection
- Excessive power supply current or amplifier output current
- Excessive temperature per sub system: PSU, amplifier and DSP
- Mains voltage within acceptable limits
- Internal power rails producing correct output
- Fans operating at correct speed
Speaker protection
- Sustained clipping prevention
- DC offset protection
- Excessive HF energy (VHF) limiter
Power distribution protection systems
- Mains inrush current limiting for soft start and anti-surge
- Mains average current limiting for mains breaker management
- Randomised initialisation when remotely powered up
VX audio output limiters
Vx provides a linear phase virtual crossover and two limiter paths on each output. This unique system delivers effective protection for systems that incorporate passive crossovers.
- Vx Limit Multi-band peak limiter, two per output
- Vx Max Multi-band overshoot limiter, two per output
- X-Max Driver excursion limiter
- T-Max Driver thermal limiter (long term power limiter)
Monitoring, measurements recorded against time
- Supply current
- Supply voltage
- Thermal Capacity
- Each driver current
- Each driver impedance
- Protection limiting for each output
Monitoring, device statistics and counters
- Number of power cycles counted
- Number of mains brownout events counted
- Fan speeds continuously monitored
- Fan under-speed events counted
- Various protection mute events counted
- Driver Impedance continuously monitored
An inbuilt notification system is provided that indicates problems to remote devices either via the network or the Volt-free changeover relay contacts accessible on the rear panel.
Physical
- Cooling: Dual vari-speed fans, front to back airflow. Washable, tool-less change filter media.
- Analogue IN and LINK: Phoenix™ pluggable terminal block (mating plug supplied)
- AES3 IN and LINK: Phoenix™ pluggable terminal block (mating plug supplied)
- Amplifier output: Neutrik Speakon™ NL4 connectors
- Mains input connector: Neutrik 32A Powercon™
- Dante Primary and Secondary: 2x Shielded RJ45
- Ethernet network: Shielded RJ45
- RS232 and RS485: Phoenix™ pluggable terminal block (mating plug supplied)
- Relay, ‘heatbeat’ outputs: Phoenix™ pluggable terminal block (mating plug supplied)
- Contact closure inputs: Phoenix™ pluggable terminal block (mating plug supplied)
- Front panel LED indicators: Per channel - Input level, output level & status
- Enclosure, all models: Standard 19” 2U (88mm), 357mm (14”) deep with handles and optional rear support
- Net Weight: 12.5kg (27.5 pounds).