Am Sonntag, 11. April 2021, 15:00:49 CEST schrieb David Kastrup: > Alf Haakon Pietruszka Lund <alf@xxxxxxxxxxxxxxx> writes: > > > On 10.04.2021 19:06, David Kastrup wrote: > >> Alf Haakon Pietruszka Lund <alf@xxxxxxxxxxxxxxx> writes: > >> > >>> On 10.04.2021 17:15, David Kastrup wrote: > >>>> David Kastrup <dak@xxxxxxx> writes: > >>> > >>> Isn't it possible to switch off phantom power on the Behringer > >>> interface? On many such USB devices I've used, phantom power is an > >>> option, not 'always on' > >> Sure, but that still leaves you without plugin power. > > > > I see I missed a small but important point; these are condensator > > mikes. Yikes... > > Yes and no: electret condenser. They don't need phantom power for > polarising the capacitor capsule as it comes prepolarised. But they do > need some power (typically 3V–6V) as plugin-power to power the built-in > FET preamplifier without which the weak capsule signal would not make it > through the microphone cable. > > The infamous Neewer BM800 can convert phantom power to plugin power and > thus can be run on either depending on the cable type (while providing > S/N ratios that are not impressive for either application). > > But a lot more typically, devices only work with one kind of power. The > kind of soundcard/computer providing 3.5mm TRS (or TS) microphone inputs > tend to carry plugin power (sometimes switchable by software), XLR > inputs tend to have an option for phantom power (almost always +48V > these days), sometimes switchable in groups. > While I'm all for using better equipment, I wonder if this mic really needs phantom or plugin power (I don't even know that term) If it's designed for a laptop headset jack, that wouldn't supply that either? It can probably get that power from USB. Anyway, the Amazon product page talks about batteries, and I know that cheap and not so cheap (I had one by Sony) electret external stereo mics with mini-jack plug for home video cameras etc. existed long ago already. Edgar
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