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#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 - gone Online   content
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Registered: 04/08/11
Posts: 4371
Would they produce and amp that wasn't safe for you as it is?
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#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
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Registered: 11/19/17
Posts: 32
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.
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#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: 1389
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.
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#452480 - 01/20/18 02:45 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: eddie1261 - gone]
Larry Kehl Offline
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Registered: 06/04/00
Posts: 2069
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)

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#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: 2069
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)
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Thoughts on Band-in-a-Box® 2017 - Mac Power Users Discussion

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Polish New Features Video for Band-in-a-Box® 2018 for Windows

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Get to Know the 202 NEW RealTracks Released with Band-in-a-Box® 2018!

We released 202 NEW RealTracks with Band-in-a-Box® 2018! Learn more about these new RealTracks when you watch our video, Band-in-a-Box® 2018 - 202 NEW RealTracks.

These new RealTracks (in Sets 278-300) are included in every Band-in-a-Box® 2018 UltraPAK, Audiophile Edition, or the PlusPAK upgrade - the Mac packages are on sale until June 30th!

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With Band-in-a-Box® 2018 for Mac®, we've introduced Vocal "Oohs" and "Aahs" RealTracks. This video shows you the different ways you can use these versatile new RealTracks.

Video link: www.pgmusic.com/?vid=zkO-AtAPv4g

You can also listen to demos of RealTracks Set 278: Shiny Vocal Oohs & Aahs here.

This RealTracks Set is available for just $29, and is also included in RealPAK 14: Country, and the Band-in-a-Box® UltraPAK, Audiophile, or 2018 PlusPAK Upgrade.

Video RealTracks for Band-in-a-Box® 2018 for Mac - Special Pricing Until June 30th!

With the recent Band-in-a-Box® 2018 for Mac release, we also released Video RealTracks Sets!

Video RealTracks allow you to see the RealTracks artist playing that track - you can use them just like any other RealTrack, and you can generate a video which will display the musician playing your song exactly as you hear it. You can also include a chord sheet or notation in the video.

We've added Video RealTracks Set 1: Pop Ballad Band to our Free Bonus PAK included in Band-in-a-Box® 2018 for Mac packages during our release special (which ends June 30th!).
Video RealTracks Set 2: Country TrainBeat Band is included in the 2018 49-PAK, along with 40 Bonus UNRELEASED RealTracks, 22 MIDI SuperTracks, 101 Instrumental Studies, and Artist Performance Set 8: Traditional Songs Sung by Béatrix Méthé.

SPECIAL OFFER: During our Band-in-a-Box® 2018 for Mac release special, purchase our "Video RealTracks Set 3-6 Special Bundle Offer" to complete your purchase with the remaining Video RealTracks Sets for the low price of just $49! Learn more.

Learn more about the new Video RealTracks and see them in action: http://www.pgmusic.com/?vid=fzkX6jO_hW4

Band-in-a-Box® Version 2018 is a HIT!

Since the release Band-in-a-Box® 2018 for Mac, we've received some great feedback!

"The added Piano Roll Window is... WONDERFUL!"
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"...it's educational utility and the potential is awesome!!!"
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