I will set-up a mixed HC/HIFi 5.1 system based on a Preamp processor (either an Emotiva XMC-2 or an Anthem AVM 60) and a mix of class D amp from HYPEX (center, surround & zone 2) or Purifi (L,R). They will power Dali Rubicon LCR as front loudspeakers (Sensitivity 89bB). A Rel T9i will be used as subwoofer.
I had a look on the specs of the processors: the maximum output voltage of the AVM60 is 8.4V rms (XLR output) while the one of the XMC-2 should be around 4V rms. The purifi amp from Audiophonics has an ajustable input gain either +7.3 dB or + 12.3dB. With +7.3dB gain the maximum power output is reached with an input voltage of 4.2V while with a +12.3bB gain max power outpout is reached with 2.25V. Moreover the HYPEX specs for NC400 or NC250 modules indicates that maximum power is obtained with input voltages of 2.05V rms and 1.6V rms respectively.
In any case, the max output voltage of the preamps are above or equal to the max input voltage of the amps. To my understanding, it will be good to prevent any amp clipping. However, since I am not an expert of this field (my day to day business is biotechnology!), I would like to get your feedback about what would be the optimal gain to select for the Purifi amp to combine it with both other the other amplifiers and the processor. Moreover, especially with the AVM60, do I have to envisage the use of attenuators between the processor and the amplifiers to have a better match?
i am looking forward reading your feedbacks!
I had a look on the specs of the processors: the maximum output voltage of the AVM60 is 8.4V rms (XLR output) while the one of the XMC-2 should be around 4V rms. The purifi amp from Audiophonics has an ajustable input gain either +7.3 dB or + 12.3dB. With +7.3dB gain the maximum power output is reached with an input voltage of 4.2V while with a +12.3bB gain max power outpout is reached with 2.25V. Moreover the HYPEX specs for NC400 or NC250 modules indicates that maximum power is obtained with input voltages of 2.05V rms and 1.6V rms respectively.
In any case, the max output voltage of the preamps are above or equal to the max input voltage of the amps. To my understanding, it will be good to prevent any amp clipping. However, since I am not an expert of this field (my day to day business is biotechnology!), I would like to get your feedback about what would be the optimal gain to select for the Purifi amp to combine it with both other the other amplifiers and the processor. Moreover, especially with the AVM60, do I have to envisage the use of attenuators between the processor and the amplifiers to have a better match?
i am looking forward reading your feedbacks!