ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: [1] 2  All   Go Down

Author Topic: Guest Teachers  (Read 3846 times)

Mike Sokol

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 3356
  • Lead instructor for the No~Shock~Zone
    • No~Shock~Zone Electrical Safety
Guest Teachers
« on: July 02, 2014, 12:04:07 am »

We'll play nice... we're learning, right?  We learn little if we kill the teacher.

Please let me know of any other manufacturers or persons you would like to invite for a guest discussion about a particular piece of technology that has to do with AC Power & Grounding. I do this sort of thing in my seminars and classrooms all the time, so why not do it in this forum?
« Last Edit: July 02, 2014, 12:06:12 am by Mike Sokol »
Logged
Mike Sokol
mike@noshockzone.org
www.NoShockZone.org

David Sturzenbecher

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1620
  • So. Dak.
    • Sturz Audio
Re: Guest Teachers
« Reply #1 on: July 02, 2014, 07:04:46 am »

Please let me know of any other manufacturers or persons you would like to invite for a guest discussion about a particular piece of technology that has to do with AC Power & Grounding. I do this sort of thing in my seminars and classrooms all the time, so why not do it in this forum?

The world will be a better place if more people hear the word of Bill Whitlock.
Logged
Audio Systems Design Engineer
Daktronics, Inc.
CTS-D, CTS-I
AES Full Member

Mike Sokol

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 3356
  • Lead instructor for the No~Shock~Zone
    • No~Shock~Zone Electrical Safety
Re: Guest Teachers
« Reply #2 on: July 02, 2014, 08:46:15 am »

I'm thinking about calling this the "Led Talks" for Loud, Entertainment, Design as a play on "Ted Talks" which stands for Technology, Entertainment, Design. Plus I like the Led Zeppelin tie in.  ;D

The idea would be to announce in advance when this will happen and open the forum up to the guest lecturer for a period of 48 hours in the middle of the week (that's 2 days for us mathematically challenged). That should give all the forum readers around the world enough time to weigh in and ask questions, and the guest will know they only have to follow this thread for 2 days, not 2 years (or longer). After 48 hours we'll thank the guest and I'll lock the thread to stop further discussion.

What do you all think? Should we try to launch the Led Talks?   
« Last Edit: July 02, 2014, 08:56:35 am by Mike Sokol »
Logged
Mike Sokol
mike@noshockzone.org
www.NoShockZone.org

Kevin Graf

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 308
Re: Guest Teachers
« Reply #3 on: July 02, 2014, 09:31:06 am »

While Bill Whitlock top's the list, others might include:

Jim Brown
then
Keith Armstrong (UK)
Mike Holt (blogs & videos)
Henry W. Ott
Logged
Speedskater

John Roberts {JR}

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 16416
  • Hickory, Mississippi, USA
    • Resotune
Re: Guest Teachers
« Reply #4 on: July 02, 2014, 10:15:15 am »

While Bill Whitlock top's the list, others might include:

Jim Brown
then
Keith Armstrong (UK)
Mike Holt (blogs & videos)
Henry W. Ott

Henry Ott and Ralph Morrison were two text book authors on the subject I read back in the '70s. Back then we would buy and read actual books...

JR
Logged
Don't tune your drums half-ass. Listen to what a properly "cleared" drum sounds like.   http://circularscience.com/

Tim McCulloch

  • SR Forums
  • Hero Member
  • *
  • Offline Offline
  • Posts: 20522
  • Wichita, Kansas USA
Re: Guest Teachers
« Reply #5 on: July 02, 2014, 10:53:33 am »

Henry Ott and Ralph Morrison were two text book authors on the subject I read back in the '70s. Back then we would buy and read actual books...

JR

What are these "books" you speak of? /nudge, wink
Logged
"Practicing an art, no matter how well or badly, is a way to make your soul grow, for heaven's sake. Sing in the shower. Dance to the radio. Tell stories. Write a poem to a friend, even a lousy poem. Do it as well as you possible can. You will get an enormous reward. You will have created something."  - Kurt Vonnegut

John Roberts {JR}

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 16416
  • Hickory, Mississippi, USA
    • Resotune
Re: Guest Teachers
« Reply #6 on: July 02, 2014, 11:18:09 am »

What are these "books" you speak of? /nudge, wink
The OTT  book was "Noise reduction techniques in electronic systems", Morrison's was "Grounding and shielding techniques in Instrumentation" (note this was the second edition c.1977 so not a new area of study 35 years ago).

I am not suggesting that sound guys read these, I was designing actual products so more involved in such details.

Properly designed modern gear should just plug and play nice with others.

JR
Logged
Don't tune your drums half-ass. Listen to what a properly "cleared" drum sounds like.   http://circularscience.com/

Kevin Graf

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 308
Re: Guest Teachers
« Reply #7 on: July 02, 2014, 12:19:39 pm »

For me the Ralph Morrison books were more of a challenge, because they were written in 'field' theory rather than 'circuit' theory. (Ott has a note on why he used 'circuit theory)
The Morrison books:
1986 Grounding and Shielding Techniques in Instrumentation.
1990 Grounding and Shielding in Facilities.
1992 Noise and Other Interfering Signals.   
Are now available used for $10 or $20.

**********************************
Henry W. Ott has a new (2009)and improved 850 page book:
Electromagnetic Compatibility Engineering
http://www.hottconsultants.com/book.html

Mr. Ott also does a few seminars each year.
Logged
Speedskater

Mike Sokol

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 3356
  • Lead instructor for the No~Shock~Zone
    • No~Shock~Zone Electrical Safety
Re: Guest Teachers
« Reply #8 on: July 02, 2014, 01:55:17 pm »

Remember, we're looking for guests that can speak on AC Power & Grounding topics. For instance, I think it would be great to have a SurgeX engineer do one about their products (don't have a name). Maybe a generator manufacturer could speak about grounding/bonding issues. I know we could get someone from Whirlwind to talk about their new power distro gear. I've been on Mike Holt's forums a bunch, and grounding/bonding issues are one of his soapbox subject, so I might be able to entice him here for a Led Talk.

These topics can include noise issues as well. So things like audio transformers, Star-Quad cable, and technical grounds are fair game. Hey, I would take a guitar pickup builder to discuss exactly how humbucking pickups work. How about any DI builders, especially about active DI's with phantom isolation.
Logged
Mike Sokol
mike@noshockzone.org
www.NoShockZone.org

Frank DeWitt

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 996
    • LBP DI Box
Re: Guest Teachers
« Reply #9 on: July 02, 2014, 03:49:19 pm »

I am a DI builder, but passive only.  I can comment on types of jacks, what to ground to what, Faraday shields,  aluminum vs steel case ETC.

I believe Ray Rayburn did some research on active DIs. As you hinted, the problem is how to supply phantom power and still not have a ground loop. The cheep way is to cheat and get the phantom power through a resistor and hope that is isolation enough.  It isn't.  The right way is what Radial does.  You run a switching powersuply with the phantom power run the AC from the switching powersupply through a transformer to gain isolation. rectify the AC and run the active DI circuit.

NICE, and it works, and it is expensive.

Frank 
Logged
Not to Code

ProSoundWeb Community

Re: Guest Teachers
« Reply #9 on: July 02, 2014, 03:49:19 pm »


Pages: [1] 2  All   Go Up
 



Page created in 0.024 seconds with 25 queries.