What are the levels of the line inputs?
The line inputs of the ARES-M are asymmetrical and present an input impedance of about 60 kΩ. They allow the entire dynamic range of the machine to be used, typically 95 dB ASA weighted when measured on the USB output, or 92 dB ASA weighted on the analogue outputs. Two sensitivities are available: Line H (for High level inputs) and Line L (for low level inputs). The Line H position allows 0 dB to be recorded throughout the input voltage range of 300 mV to 4.9V and the Line L from 19 mV to 310 mV. The adjustment zone (using the level adjustment keys) ranges from +20 dB to 12 dB in the Line H mode and 3 dB to 35 dB in Line L (referenced to 1V). As an example, one can say that if the modulometer indicates 10dBfs and that the level adjustment is set to 12 dB, then the input level is 12db 10 dB= -22 dB with respect to 1 V or in other words 794 mV. The following drawing clarifies the above.
