Pro Audio Design Forum

I decided to try a super-simple rectifier circuit I borrowed from Cordell. Take a look around IC4, IC5 and Q2-Q3. https://www.proaudiodesignforum.com/images/jpg/Build_A_High_Performance_THD_Analyzer_Oscillator_Cordell_Audio_June_1981.jpg Build A High Performance THD Analyzer Oscillator Cordell Audi...

I'm tempted to try figure 2: https://www.edn.com/a-simple-circuit-wi ... ube-sound/

Plandemic Series - The Great Awakening The Great Awakening is the third installment of the Plandemic series. This documentary experience assembles forbidden puzzle pieces to reveal the big picture of what’s really happening in the USA and around the world. The Great Awakening is intended to be a li...

Mike Adams Interviews Karen Kingston May 23, 2023. Researcher Karen Kingston reveals covid-19 vaccines to be DELIBERATE BIOLOGICAL WEAPONS unleashed against humanity. Video: https://www.bitchute.com/video/Wk4j0v2g6CpT/ https://static-3.bitchute.com/live/cover_images/f2uBz1azyxq6/Wk4j0v2g6CpT_320x18...

Some time ago I explored the ADI and Burr-Brown current and voltage-boosted outputs and noticed the similarity of it to the Amber 3501 output stage. I posted about the AD and Burr-Brown circuit here: https://www.proaudiodesignforum.com/forum/php/viewtopic.php?p=6664#p6664 https://www.ka-electronics...

Dr. David Martin at the International Covid Summit, European Parliament, Brussels. “Covid-19 was an act of biological warfare perpetrated on the human race. It was a financial heist. Nature was hijacked. Science was hijacked.” Video: https://www.bitchute.com/video/vjleNXFV4748/ Video: https://wayne...

Alex Jones Tom Renz Interview May 18, 2023 without commercial breaks. Alex Jones explains the Covid-19 hospital murder protocol and interviews attorney Tom Renz. Segment contains whistleblower audio from a hospital pharmacist. "Mod-rna" is discussed. Video: https://www.bitchute.com/video/...

Update: May 19,2023: In current builds of ULDO I reduced the value of R4 from 2K21Ω to 499Ω. This change improves ALC stability when the VCA is given additional authority. With R4 at 499Ω I've found VR1 adjusted for +250 to +280 mV at TP3 to be about right. With TP3 in the +250 to 280 mV range more ...

ZTX851 Die Photos Found die photos for the ZTX851 on the EEV Blog. https://www.eevblog.com/forum/projects/transistors-die-pictures/msg4144498/#msg4144498 https://proaudiodesignforum.com/images/jpg/ZTX851_Die_1.jpg https://proaudiodesignforum.com/images/jpg/ZTX851_Die_2.jpg About all I can find on Z...

Focusrite 2i2 Gen 3 192 kHz Sample Rate Loopback Frequency Response I typically use the Focusrite 2i2 with a 96 kHz sample rate and have never swept the analog hardware in loopback at 192 kHz to see what the analog filter limitations might be. Today I measured the loopback high frequency -3 dB poin...