Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Sound › Why is the FR2-LE field recorder only 12 volts, when phantom power requires 48? › Reply To: Why is the FR2-LE field recorder only 12 volts, when phantom power requires 48?
The unit has 48V phantom power. It’s in the spec. Avoid taking advice from people who tell you rubbish and give away their lack of knowledge.
That all said, 48V phantom is a standard specification and it’s laid down and generally followed, but the original spec also detailed the maximum current it’s able to provide, and that’s actually quite restrictive for some mics.
Many condensers can actually operate on a range of phantom voltages – 9-52V being typical. These are mostly mics that have electret capsules that don’t need a high polarising voltage, just a few milliamps for the preamp inside. If it is a large diaphragm type, then generally 44V or more is required, or they are very noisy, or just don’t work.
With field mixers, generating 48V was not that simple in the ‘old days’ some even had lots of 9V batteries in series to generate the voltage needed. Nowadays, we can easily generate the 48V from a 6, 9 or 12V battery supply. A few have always delivered less than 48V causing occasional issues!