NXAMP4x1 & NXAMP4x4 User Manual - Nexo

GENERAL DESCRIPTIONSwitching) design ensures high efficiency and low noise. Moreover, because the twoconverters work in opposite phase, some noise is cancelled; this is preferable for bothsound quality and EMC (Electro magnetic compatibility).Analog Input blockAfter linking the two XLRs for each channel, the analog input block has an EMC filter and aprecision input buffer that will remove the common noise on the input signal. Themaximum level allowed for the input signal is + 28 dBu (55 Volts peak to peak). The pinout of the input XLR is given bellow.Control blockThe control block contains several sub-block that are detailed bellow.The plain lines show the audio or sense signal (sense are voltage or current signalmeasured at the output of each amplifier). The dashed lines show the digitalcommunication signal among several block.You can see the audio input on the left; there are four analog inputs (from input XLR)named Analog A, Analog B and so on… and four digital inputs (Digital A, Digital B and soon…) from the expansion slot. These eight signals can be patched inside the DSP to anyPAGE 28 OF 103