Combining advanced logistical advantages with superior sonic performance, NXAMP specifications rate among the industry's most powerful amplifiers, presenting very high power with low load drive. Not only are NXAMP 4x4 and 4x1 models lighter and less space-consuming than conventional amplifier-processor systems, but they also eliminate several A/D conversions.
More than two years of research have yielded significant DSP innovations which allow multiple voltage/current/temperature sense lines from the amplifier's output, to protect both the amplifier and power supply.
NXAMP DSP protection includes:
- Power-on protection (smooth start-up with in-rush limitation)
- Power-off protection (clean shut-down procedure)
- Peak Voltage limiter (clip limiting)
- Peak Current limiter
- VHF protection
- Integrated current limiter
- DC offset protection
- Short circuit protection
- Fan speed control
- Power Amp overheat protection
- SMPS overheat protection
- SMPS fault protection
- Power cable monitoring
NXAMP power supplies are full resonance types with half bridge converters. This exceptional design minimizes noise via (Zero Crossing Switch (ZCS) technology. NXAMP4x4 employs four times the structure of a monaural amplifier to present very high power with low load drive. This requires four converters, four transformers and of course, four power supplies. In addition, two converters synchronize the opposite phase on both NXAMP models, thus cancelling noiseto yeild unrivalled sonic performance with low EMC.
Both NXAMP amplifiers employ YAMAHA's EEEngine technology. This technology offers the sonic purity of conventional class AB, but with a heat dissipation equalling class D technology. In fact, NXAMP rails constantly follow the output signal needs, minimizing the required headroom (and wasted energy).
NXAMP signal processing is identical on both models, and derived from the NX242 TDcontroller. Processing power has been increased on both CPU and DSP side. NXAMP uses twin Freescale (formerly Motorola) DSPs, with a total processing power which is 3.5 times the processing power of an NX242 fitted with an ES-4 NXtension board.
Amplifier output is now sensed in both voltage and current and 24bit converters execute these measurements. The latest generation audio converters provide enhanced dynamic range with low latency (500us) analog input to output, in FLAT mode. The rear panel expansion slot allows easy addition of an ES100 EtherSound card. This new generation of EtherSound firmware offers device-to-device communication and many powerful new functions.
POWER SPECIFICATIONS FOR NXAMP4x4
Number of amplifiers channels: 4x channels, 2 by 2 bridgeable
Max. output voltage (no load): 4x 200Volts
Max. output power: (8Ω) 4x 1900W
Max. output power: (4Ω) 4x 3300W
Max. output power: (2Ω) 4x 4000W
Power consumption: (Standby) 20W
Power consumption: (Idle) 150W
Power consumption: (1/8 Power) 3000W