Page 2 of 2 < 1 2
You need to be logged in to post on the forum
Topic Options
Index
#452307 - 01/19/18 07:43 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
eddie1261 Offline
Veteran

Registered: 04/08/11
Posts: 4390
Would they produce and amp that wasn't safe for you as it is?
_________________________
I will continue to post in the songwriters forum but will be keeping my opinions to myself as far as the off topic forum goes.

Top
#452351 - 01/20/18 03:59 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
duncanwhyte Offline
Enthusiast

Registered: 11/19/17
Posts: 34
Loc: uk
More study and its a basic early line filter. Intended to clean up the power supply. Something which now is done at the point of generation, but back then wasn't detected until sound equipment came into being.

Perhaps you might remember some amps which gave out a radio signal? Because they picked it up in their circuitry. Such things are rare as rocking horse doodoo now.

Its unlikely now to find a noisy line in the grid. But quite possible in something like a generator if the line filter on that is poor or faulty.
_________________________
Using: Dell 3268 i3, 8 GB ram, windows 10. Biab version 2017 standard package, no extras.

Top
#452356 - 01/20/18 04:33 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: duncanwhyte]
BlueAttitude Offline
Expert

Registered: 11/30/07
Posts: 1637
Loc: Ontario, Canada
Originally Posted By: duncanwhyte
More study and its a basic early line filter. Intended to clean up the power supply. Something which now is done at the point of generation, but back then wasn't detected until sound equipment came into being.



I agree, no longer needed and you will never see it in a modern tube amplifier.
_________________________
Dave

Blue Attitude: Homepage, Youtube page

Top
#452480 - 01/20/18 02:45 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: eddie1261]
Larry Kehl Offline
Veteran

Registered: 06/04/00
Posts: 2115
Loc: New Mexico
Eddie

No reputable designer or company would do it KNOWINGLY but yes they did unwittingly make unsafe amps. And it was almost EVERY amp manufacturer of that era especially when based on 40'5 & 50's designs and before the general use of the "hot, neutral, and grounded" power cord (aka the 3 prong) - with a properly grounded amp folks no longer had to "lift ground" to reduce/eliminate 60 (50) cycle hum .

These early design's were simply done "in a vacuum,", that is they never considered a cascade of failures:

1) a shorted CAP and

2) touching STRINGS, while

3) TOUCHING an ACTUAL ground source or touching a "grounded" Mic or other guitar player whose OWN ground source was at a completely different electrical potential

But these designs were not done with malice and the designers were not not lazy or stupid.

Even today a clean and great sounding amp can probably trace their actual design (maybe even the entirety of it, except for some of the power supply) directly back to these OLDER designs, with very little if ANY modification to signal flow path, power supply rectification, or components.

Larry


Edited by Larry Kehl (01/20/18 02:46 PM)

Top
#457367 - 02/13/18 11:57 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
Larry Kehl Offline
Veteran

Registered: 06/04/00
Posts: 2115
Loc: New Mexico
how did your mod go?

and while here

This is just an UPDATE (and more "dead horse beating") with a video on HOW to do it (while this is a Fender not Gibson it has similar design with a death cap and ground/polarity switch)

https://www.youtube.com/watch?v=3cX-DwRWIMU

(on this first vid he leaves death cap in and polarity switch in but entire thing has been electrically removed from circuit - he does it for 1) external cosmetics - no gaping hole where switch was and 2) if some idiot wants to revert to original DANGEROUS condition)

and to add emphasis on how to

https://www.youtube.com/watch?v=LEyScfv1Mgc&t=141s

Larry


Edited by Larry Kehl (02/13/18 12:06 PM)
_________________________
Win7&10Pro64,i7-2600k,32GB,1OTBsHDD,RX480 8GB,Scarlett 18i8,MIDI4x4,Montage7Fusion 8HD,QS8,GR-50,Integra7,XV5080,Fantom-XR,QSR,SC-8850,Nanosynth,SPLAT,FL20, SO3,MC8,AD2,ST3,Kontakt5,Amptube4,etc.. but really I'm a guitar player AXE FX III

Top
Page 2 of 2 < 1 2


Moderator:  Andrew - PG Music, PeterGannon 
PG Music News
Complete RealBand 2018 Users Guide - Interactive Online Version Available!

Visit our Online Manuals support page, and you'll find our latest addition - the online manual for the RealBand 2018 for Windows User's Guide!

www.pgmusic.com/manuals/rb2018full/index.htm

Just like the other Online Manuals now available on our Support page, this User's Guide can be easily navigated by chapter, or using the main Table of Contents window!

Band-in-a-Box® Testimonial Video - Endorsing Artist Steve Wallace

Check out the latest Band-in-a-Box® Testimonial Video from endorsing artist Steve Wallace!
www.pgmusic.com/?vid=6QcPF5cQjKw

"With the vast array of RealTracks and styles offered, Band-in-a-Box is a phenomenal program that can help any musician and composer hone their skills."
-Steve Wallace

Band-in-a-Box® 2018 for Mac review on www.guitaren.dk!

www.guitaren.dk has recently reviewed Band-in-a-Box® 2018 for Mac, which can be read here.

Summary:

"Our conclusion is that this is a very serious and well done piece of software.The program is fast and flawless and you'll very quick get impressive results just typing the name of the chords. The new functions are exiting and worthy to be includes in this anniversary upgrade.
We were very impressed by the MIDI SuperTracks, which is simply brilliant. It’s a function in Band-in-a-Box that's here to stay.
It's amazing that the programs feel is so fresh and innovative after 30 years. This version is better than ever and should be a in every home studio or pro studio... Congratulations with the anniversary! We love you as the ex-wife we did not know we were missing.
"

Band-in-a-Box®: Part of The Ultimate Desktop Guitar Practice Rig!

Check out the latest Sweetwater article from Mitch Gallagher: "The Ultimate Desktop Guitar Practice Rig" - he's included Band-in-a-Box!

"The king of backing track creation, in my opinion, is Band-in-a-Box (BIAB). It can do everything from country to jazz to metal, with a huge array of instruments and options. There is a great selection of songs and BIAB tracks available for free on the web, so you don’t even have to make your own."
-Mitch Gallagher
www.sweetwater.com

#TBT - The First Audiophile Edition

A blast from the past... the introduction of the Audiophile Edition with Band-in-a-Box 2008.5!

The first Audiophile purchase included the WAV files for all the RealTracks & RealDrums that were available at that time: RealTracks Sets 1-9 and RealDrums Sets 1-20. It shipped pre-installed on a 250GB USB hard drive - take a look...

Wondering what else was introduced with Band-in-a-Box 2008.5? Click here to see the "Band-in-a-Box 2008.5 New Features List."

RealBand 2018 Interactive Online Upgrade Manual Available!

The newest addition to our Online Manuals support page is the RealBand 2018 New Features Guide!

Just like the other Online Manuals now available on our Support page, this Upgrade Manual can be easily navigated by chapter, or using the main Table of Contents window!

New Interactive Online Band-in-a-Box® 2018 Manual for Mac!

We've added an Online Manuals option to our Support page, where you can access an interactive online Band-in-a-Box® 2018 for Mac User's Guide!

The Online Manual can be easily navigated by chapter, or using the main Table of Contents window! Also available on our Online Manuals page is the PDF files for Band-in-a-Box® 2017-2018 Full manuals & Upgrade manuals.

Forum Stats
27989 Members
57 Forums
53996 Topics
446053 Posts

Max Online: 2434 @ 11/14/17 12:37 AM
Newest Members
mononino, alphanumeric onl, Firebird, PMAudio, Ed Mace

27989 Registered Users
Top Posters (30 Days)
Alyssa - PG Music 407
David Snyder 177
Al-David 139
MarioD 123
Jim Fogle 111
Deryk - PG Music 109
Matt Finley 101
VideoTrack 94
Icelander 92
Janice & Bud 91
Today's Birthdays
chardin, Steve Ducote