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<blockquote data-quote="John Roberts" data-source="post: 100838" data-attributes="member: 126">Re: New line of StudioLive AI mixers announced.The earliest motorized linear faders that I recall were Penny and Giles a British company so look there for a patent. I suspect there were rotary servo motors on normal rotary pots long before that. Later (80-90s) I recall some linear motor fader approaches, but all the modern cheaper stuff is some combination of linear fader with rotary motor, pulley and belt or string or whatever to convert rotary motor operation to linear slider movement. There have been some interesting (old) variants involving quasi-virtual fader using visual indicators where the gain control was done with (analog) VCAs and not actually performed by the physical fader. The modern Behringer appears to be just using the mechanical fader as an input/output status display device with actual gain control performed digitaly or digital controlled analog (like in mic pres).&nbsp; Of course i still think control surfaces will evolve into a holographic image projected from my I-watch but i may be a little early on that. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":-)" title="Smile&nbsp; &nbsp; :-)"&nbsp; data-smilie="1"data-shortname=":-)" />&nbsp; Kind of like the querty keyboards projected onto a flat surface. If there are no actual mechanical faders there is no need for motors to move images of slider knobs,&nbsp; ... <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":-)" title="Smile&nbsp; &nbsp; :-)"&nbsp; data-smilie="1"data-shortname=":-)" />. Hey, maybe SL needs to leapfrog the industry and go straight to a soft virtual interface? Should be cheap when technology finally gets here. JR</blockquote>

[QUOTE="John Roberts, post: 100838, member: 126"] Re: New line of StudioLive AI mixers announced. The earliest motorized linear faders that I recall were Penny and Giles a British company so look there for a patent. I suspect there were rotary servo motors on normal rotary pots long before that. Later (80-90s) I recall some linear motor fader approaches, but all the modern cheaper stuff is some combination of linear fader with rotary motor, pulley and belt or string or whatever to convert rotary motor operation to linear slider movement. There have been some interesting (old) variants involving quasi-virtual fader using visual indicators where the gain control was done with (analog) VCAs and not actually performed by the physical fader. The modern Behringer appears to be just using the mechanical fader as an input/output status display device with actual gain control performed digitaly or digital controlled analog (like in mic pres). Of course i still think control surfaces will evolve into a holographic image projected from my I-watch but i may be a little early on that. :-) Kind of like the querty keyboards projected onto a flat surface. If there are no actual mechanical faders there is no need for motors to move images of slider knobs, ... :-). Hey, maybe SL needs to leapfrog the industry and go straight to a soft virtual interface? Should be cheap when technology finally gets here. JR [/QUOTE]

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