Search found 488 matches: servo

Searched query: servo

by mediatechnology
Mon Mar 23, 2020 4:29 pm
Forum: The Peabody Lounge
Topic: Bill Sebastian's "Outerspace Visual Communicator"
Replies: 0
Views: 1437

Bill Sebastian's "Outerspace Visual Communicator"

... The OVC in Bill's backyard circa 2013: https://proaudiodesignforum.com/images/jpg/Bill_Sebastian_OVC_Backyard.jpg The OVC was a servo-controlled mirrored trough with a video camera at one end and a monitor at the other. The whole gizmo resembled a kaleidoscope. An array of incandescent ...
by JR.
Fri Jan 31, 2020 10:29 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1145
Views: 439811

Re: Entropy

For anyone who has a package stolen this should make you smile https://www.youtube.com/watch?v=xoxhDk-hwuo His other videos are good, esp the servo assist dartboard. I'm inspired by this video. If I sent a package from myself to myself and setup the Fedex driver for theft then I would have standing ...
by mediatechnology
Fri Jan 31, 2020 10:01 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1145
Views: 439811

Re: Entropy

For anyone who has a package stolen this should make you smile https://www.youtube.com/watch?v=xoxhDk-hwuo His other videos are good, esp the servo assist dartboard. I'm inspired by this video. If I sent a package from myself to myself and setup the Fedex driver for theft then I would have standing ...
by billshurv
Fri Jan 31, 2020 4:32 am
Forum: The Peabody Lounge
Topic: Entropy
Replies: 1145
Views: 439811

Re: Entropy

For anyone who has a package stolen this should make you smile

https://www.youtube.com/watch?v=xoxhDk-hwuo

His other videos are good, esp the servo assist dartboard.
by JR.
Sat Dec 14, 2019 3:33 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 53
Views: 12047

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

... revealing test in an RIAA EQ'd chain. Exactly, I killed a lot of brain cells soaking RIAA stages in beer. Your comments WRT passive input pole servos has stuck with me. In the very brutal world of RAW playback the servo takes a high frequency beating. Once the servo op amp stops being an op ...
by mediatechnology
Sat Dec 14, 2019 1:01 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 53
Views: 12047

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

... quantify distortion of the DUT but now that you mention it it is a very revealing test in an RIAA EQ'd chain. Your comments WRT passive input pole servos has stuck with me. In the very brutal world of RAW playback the servo takes a high frequency beating. Once the servo op amp stops being an op ...
by mediatechnology
Thu Dec 12, 2019 1:53 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 53
Views: 12047

Re: Flat Balanced Input Moving Coil Phono Preamp Construction Information

... ; Output = -4.2 dBu J4-J7 linked; Output = +1.6 dBu J6 and J7 Open; Output = -10.6 dBu Frequency Response Measurement Frequency response with the servo switched on and off. With the servo off the preamp has response to DC. The green trace is limited by the response of the Focusrite 2i2. With the ...
by mediatechnology
Tue Nov 26, 2019 4:58 pm
Forum: Build
Topic: Flat Balanced Input Moving Coil Phono Preamp Construction Information
Replies: 53
Views: 12047

Thermally Coupling the ZTX851 Input Pairs

... it cures it needs to keep being pushed down. https://proaudiodesignforum.com/images/jpg/ZTX851_MC_Preamp_Transistor_Therrmal_Hat.jpg This is the servo response ( at the servo output not the audio output) of one channel without the transistors glued in open air: https://proaudiodesignforum.com/images/jpg/ZTX851_MC_Preamp_Servo_Response_Without_Hat.jpg ...
by olafmatt
Mon Oct 07, 2019 2:18 pm
Forum: Pro Audio Design
Topic: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 122
Views: 143624

Re: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp

I look at it this way: From a DC perspective if the output of the mic is a few hundred millivolts out of balance and the servo forces the resistance bridge back into sub-millivolt balance how is that any worse than it being in perfect balance to begin with? It can even be a good thing! ...
by mediatechnology
Mon Oct 07, 2019 2:11 pm
Forum: Pro Audio Design
Topic: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 122
Views: 143624

Re: New: A Direct-Coupled Input-Capacitorless Active Mic Preamp

I would guess it would allow for large enough a correction, but it would need less attenuation at the output of the servo opamps, thus potentially adding more unwanted stuff to the signal. I intend to find out. I really like the ZTX851 MC front end and with mods I think it will ...