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by mediatechnology
Wed Jul 21, 2021 8:44 pm
Forum: Pro Audio Design
Topic: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Replies: 10
Views: 3831

Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator

I had a chance today to listen to a bunch of different songs folded to mono and I have to conclude that Studer was onto something when they took the Dome filter and used it to improve mono fold-down. I compared the stereo presentation to conventional summed mono and the Studer 90 degree filter. Two ...
by mediatechnology
Wed Jul 21, 2021 3:29 pm
Forum: Build
Topic: Phono Transfer System Construction Information
Replies: 227
Views: 254133

Re: Phono Transfer System Construction Information

Based on the termination resistance (56K) I'm wondering if the MM board would be a better option.
by mediatechnology
Wed Jul 21, 2021 3:27 pm
Forum: Pro Audio Design
Topic: Stereo Width Control For Mastering Using the LR +/-S Method
Replies: 12
Views: 29445

Re: Stereo Width Control For Mastering Using the LR +/-S Method

The Stereo Width Controller boards are in - let's see if they run.

Image
by mediatechnology
Wed Jul 21, 2021 3:23 pm
Forum: Pro Audio Design
Topic: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Replies: 10
Views: 3831

Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator

Thanks for the citations Frank!
Lots of reading to do...
by mediatechnology
Tue Jul 20, 2021 10:11 pm
Forum: Build
Topic: Phono Transfer System Construction Information
Replies: 227
Views: 254133

Re: Phono Transfer System Construction Information

Paul -

I'm not sure I can read the values.
What is the value of the resistor that terminates the head?
Is it 56K?
by mediatechnology
Tue Jul 20, 2021 9:56 pm
Forum: Pro Audio Design
Topic: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Replies: 10
Views: 3831

Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator

At GroupDIY I found sims: "In phase" response: https://proaudiodesignforum.com/images/jpg/Studer_90_Degree_Filter_Inphase.jpg "Out-of-phase" response. https://proaudiodesignforum.com/images/jpg/Studer_90_Degree_Filter_Outphase.jpg So it appears that the Studer 90 degree filter makes mono, which wou...
by mediatechnology
Tue Jul 20, 2021 7:43 pm
Forum: The Peabody Lounge
Topic: The Corona Virus Hoax of 2020
Replies: 419
Views: 170425

Motion For Preliminary Injunction Of Covid-19 Vaccine Emergency Use Authorization

Americas Frontline Doctors Lawsuit Motion For Preliminary Injunction Of Covid-19 Vaccine Emergency Use Authorization For the non-brainwashed still dealing in facts and reality, America's Front Line Doctors' preliminary injunction is a must-read. It outlines the whole Covid-19 fraud strategy and con...
by mediatechnology
Tue Jul 20, 2021 3:38 pm
Forum: Pro Audio Design
Topic: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Replies: 10
Views: 3831

Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator

Sample Soundfiles From the Stone's "Sympathy for the Devil" Focus on the piano chords in the first 15 seconds. For whatever reason, after 15 seconds the mono compatibility of the part changes. Original stereo: https://proaudiodesignforum.com/content/Sympathy_Unprocessed_Stereo.mp3 Original in mono ...
by mediatechnology
Tue Jul 20, 2021 3:26 pm
Forum: Pro Audio Design
Topic: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Replies: 10
Views: 3831

Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator

I decided to sweep the Studer 90 degree filter. The sims I posted earlier are not correct. The input levels in the images below are 0 dBu. The top red trace is the conventional mono sum which has a +6 dB build-up. The blue trace is mono fed into both inputs and processed by the 90 degree filter the...
by mediatechnology
Tue Jul 20, 2021 11:12 am
Forum: The Peabody Lounge
Topic: The Corona Virus Hoax of 2020
Replies: 419
Views: 170425

The "Vaccine" Injury of Dominique de Silva

In an Instagram post over the weekend, North Carolina real estate agent Dominique de Silva shared video of her experiencing dystonia, or involuntary muscle spasms, shortly after receiving a vaccine. https://waynekirkwood.com/images/jpg/Dominique_de_Silva_Vax_Injury_Thumb.JPG Video: https://waynekir...