NXAMP4x1 & NXAMP4x4 User Manual - Nexo

NXAMP VERSUS NX242: WHAT’S NEW?Computing resourcesThe DSP resources have been multiply by 3.5 between the NX242ES4 and the NXAMP (soit means by 7 between the NX242 and the NXAMP). This will ensure that the NXAMP willhave enough DSP resources to deal with many years of algorithm improvements. Otherkey components like CPU speed, memory quantities and so on have been also upgraded.Four separate inputsThe analog input stage now offers 4 separate symmetrical inputs, each on XLR with link(due to the 3U , on NXAMP4x1, or 4U , on NXAMP4x4 height of the unit, there is plenty ofspace for connectors at the back). All the inputs offer considerable 28 dBu headroom(same than on the NX242). These analog inputs leads to last generation 24 bits convertersrunning at 48 KHz (like on the NX242-ES4).Power supplyThe NXAMP4x1 Powered TDcontroller uses three separate switch mode power supplies(SMPS) whereas the NXAMP4x4 uses 5. A first small power supply is used for powering theTDcontroller digital board, and to initiate the power amp. The other big power supplies areused for power amplifiers:• On NXAMP4x1, channels 1 & 2 (on one power supply) and for channel 3 and 4 (onthe other one).• On NXAMP4x4, each channel has its own large power supply.These large power supplies are precisely tailored to work around a precise Mains voltage,so separate model of NXAMP exists for 100 ~ 120 Volts on one side (these are modelsNXAMP4x1U and NXAMP4x4U), and for 220 ~ 240 Volts on the other side (these aremodels NXAMP4x1C and NXAMP4x4C).Ethersound optional boardThe NXAMP is designed to accept the optional NXES104 board witch offers four digitalinputs among a bidirectional 2x 64 channels Ethersound ES100 network. This optionalboard uses the new NEXO slot which prevents the necessity to open the top panel of theamplifier for installing the board. NXAMP firmware upgrade can also be performed throughthis Ethersound port. Finally, the ASIO functionality of the NXES104 allows streaming 4channels of 24 bits / 48 KHz audio directly from the Ethernet port of a PC computer.User interfaceThe front panel LCD display is now a comfortable 2 x 40 characters display, for easy accessto the parameters for each channel.PAGE 12 OF 103