Quote:
Originally Posted by
Plush
β‘οΈ
Thank you for this discussion. On the subject of TLM 170, what Neumann does not mention (because it is scary) is that 170 requires very high phantom current to start up. Then it settles down to around the mentioned figures. Indeed 170 requires greater than 5.5 mA to start up. This figure was never published but was told to me several times by
Jerry Graham from Gotham Audio (former USA importer for Neumann)
What an interesting point you raise, Plush. Of course we all appreciate the concept of inrush current in power supplies, so why not the startup (compared to steady-state/equilibrium) characteristics for phantom power.
The standard for phantom power (not all mixers comply) requires the ability to deliver 10mA per channel so that should cope with the TLM "in-rush". Possibly a whole board full of TLM170s (there's an idea to conjure with!) could feel a bit stressed if they all started at once, but once "steady-state" is reached (maybe 10 - 15 secs), all should be fine. If it doesn't, what are the consequences - does power regulation in the mic fail and it doesn't start?
And what are the results of "slow ramp-up" phantom as implemented by RME.
Maybe this is worthy of a dedicated phantom power thread. And now back to our scheduled program ...