On Tue, Feb 11, 2025 at 10:29 AM, <martenberger92@...> wrote:
I am aware that in a way I am describing a mixer yes. But I want this setup to be as small and light-weighted as possible and also battery powered.
It still seems that your goals are in conflict:
- XLR in with phantom power
- high performance
- mix controls or switching
- small, lightweight, simple, portable, battery-powered
?
But anyway. Off the top of my head, a first approach to DIY might look like this:
- crib some of the circuitry including opamp from the Opti-Alice project to buffer the raw capsules, to make one balanced mic preamp, and for post-mix makeup gain if necessary
- battery supply (6v or more) from alkalines or rechargeables for the opamps
- a charge pump, or 6x 9v (the rectangular PP3 type) for phantom power
besides I don't know any compact 3 channel XLR mixer with phantom power.
There are portable analog mixers available in the pro and semi-pro market. The Saramonic SR-PAX1 is a two-input mixer with phantom which might be a good starting point for modification, or combine two. Or their Smartrig+ mixer. I think Rolls offers similar mixers.
?
In the used market, the SHURE FP32 or FP33 can often be had for $200 or less. These are 3 mic in, stereo out, with phantom. Heavy little suckers.
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