Question to Sonosax:
What is the draw of the SX-M2 and SX-M2/LS when providing 48V phantom power? I am using them both with Schoeps.
I was reading the specs on the unit and this is what I concluded:
External
:
12V DC to 24V DC, minimum 30mA, maximum 80mA - I guess this means that the the max it will consume is 80mA at 24V, so if this is the case, and the external battery I orderd is 4000mAh (19V or 16V). then 4000mAh/80mA = 50hours of run time on the external battery.
I am planning on running it at 19V but what would the run time be if I changed it to 16V? Would 16V affect the sound at all?
Their answer:
thank you for your message
Effectively the SX-M2 will draw max 80mA under 24V, however allow a short slightly higher current draw at power-up.
The average draw is aprox 50 to 60mA
You calculation is correct, but bear in mind that it is a purely theoretical value and may vary according the effective battery capacity.
The Schoeps microphone are usually drawing around 4mA under 48V => aprox 190mWatt => roughly said 400mW for a pair of Schoeps.
This represent aprox 25mA under 19V if we consider aprox 85% efficiency in the DC/DC converter that produce the 48V Phantom.
The efficiency in the SX-M2 is higher but I take this figure for safety.
If you change from 19Volts to 16 Volts the theoretical running time should be around 16% shorter => 42 hours instead of 50hours
Reducing the voltage does not affect the sonic performance at all, in fact it will sound excatly the same
but you will get a slightly lower headroom as the overall dynamic will be reduced by aprox 1,5 dB to 2 dB max
...somehow negligible as this is less than 2% of the max dynamic range of the SX-M2
I hope this answer your questions
Kind regards
Pierre Blanc
SONOSAX
Sales and Customer Support