Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-26 Thread Paul Hodges
--On 25 July 2016 18:20 +0200 David Pickett wrote: > Yes; but in my experience this is more predictable than how or when > Murphy will strike! However, Murphy can strike whatever system you are using, so choosing one rather than another is no guarantee... Paul -- Paul Hodges

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-25 Thread David Pickett
At 11:40 25-07-16, Richard Lee wrote: >> Most days I would agree with you: but there is always Murphy's Law to >contend with, and the specific case of this states that a PP3-powered >recording device will fail only when a unique event is to be recorded. > >Ha! In my limited experience, Murphy is

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-24 Thread Richard Lee
> Most days I would agree with you: but there is always Murphy's Law to contend with, and the specific case of this states that a PP3-powered recording device will fail only when a unique event is to be recorded. Ha! In my limited experience, Murphy is MUCH more likely to strike at rechargeabl

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-24 Thread Chris
Excellent points - thank you. Chris Woolf On 24-Jul-16 12:54, Fons Adriaensen wrote: On Sun, Jul 24, 2016 at 10:49:47AM +0100, Chris wrote: But does that mean that the impedance converters of the capsules are running on the 9V supply? If so, does the max SPL suffer, as it does on most micro

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-24 Thread Fons Adriaensen
On Sun, Jul 24, 2016 at 10:49:47AM +0100, Chris wrote: > But does that mean that the impedance converters of the capsules are > running on the 9V supply? > > If so, does the max SPL suffer, as it does on most microphones > running off reduced supplies? On P48 I'm guessing the Class A stages > run

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-24 Thread Chris
Useful comments, Richard. Thank you. But does that mean that the impedance converters of the capsules are running on the 9V supply? If so, does the max SPL suffer, as it does on most microphones running off reduced supplies? On P48 I'm guessing the Class A stages run from ~30V rails. Chris

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-24 Thread Rev Tony Newnham
and for anything really impportgant, have a backup recording system (or 2) running in parallel! It's the "belt, braces and piece of string" scenario. Every Blessing Tony On 23/07/2016 21:58, David Pickett wrote: At 07:31 24-07-16, Richard Lee wrote: > >For an important recording, use a new

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-23 Thread David Pickett
At 07:31 24-07-16, Richard Lee wrote: > >For an important recording, use a new ALKALINE PP3. Probably 10 hrs life > >http://data.energizer.com/PDFs/522.pdf Most days I would agree with you: but there is always Murphy's Law to contend with, and the specific case of this states that a PP3-powered

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-23 Thread Richard Lee
> The Tetramic spec declares 3.5mA x 4 capsules (=15mA) @48V - that's 720mW > But to power through the PPac it's 9-12V @<10mA - that's 90- 120mW - a big difference. The P48V current consumption is pessimistic. Powering directly bypasses the regulation required for P48V. You also avoid noisy

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-23 Thread Chris
On 23-Jul-16 14:29, David Pickett wrote: Core Sound says: "When 48 Volt phantom power is not available, PPAc can also be powered by an external battery pack or AC power supply ("wall wart") via a DC power connector (1.7mm) on the PPAc transmitter. It requires 9 to 12 Volts DC at 10 mA mini

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-23 Thread David Pickett
At 04:12 23-07-16, Halasz, Andrew wrote: >Is anyone using an external battery pack to power the TetraMic via the >DC connector on the PPAc transmitter? This is referenced on the Core >Sound website. Is there any thing available that suits this purpose? > >Running phantom power on my portable rec

Re: [Sursound] External phantom battery source for TetraMic PPAc

2016-07-23 Thread Chris
You could, presumably, tackle this from two directions. You could use one of the many 9 /12V Li+ powerpacks sold for running video camera accessories (see Amazon etc) which should be able to provide you with 50 hours or so of phantom running on the PPac. Or, if you hate DC coaxial connectors

[Sursound] External phantom battery source for TetraMic PPAc

2016-07-22 Thread Halasz, Andrew
Is anyone using an external battery pack to power the TetraMic via the DC connector on the PPAc transmitter? This is referenced on the Core Sound website. Is there any thing available that suits this purpose? Running phantom power on my portable recorder to the four mics goes through batterie