transformers between 68 and 78
Posted: Wed Aug 08, 2007 11:54 pm
what changes if any took place between 68 and 78 to the transformers?
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transformers between 68 and 78
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Posted: Mon Aug 13, 2007 12:19 pm
Rockstah, my understanding is that the EPA (Environmental protection agency) outlawed certain elements in '75, mercury and lead, which was probably loaded in the iron in the early trannies. Ever notice that heavy "knock" in the old marshalls, that certain frequency that jumps out at ya, I bet that's the reactive mercury and lead (hint mercury magnets was around since like the 50s, hence the mercury name??); Also, ever notice that fire resistant material in the early boards, I think they call it asbestos, that was outlawed also. Too bad, it made the best anti-heat material in the amps...
Posted: Mon Aug 13, 2007 6:46 pm
What!
Do you know that they still put Mercury filings in your mouth and are only phasing the use of it out this year.
You can still buy slack tubes filled with mercury.
As for lead, the 60/40 solder you buy right now is currently RoHS approved.
Do you know that they still put Mercury filings in your mouth and are only phasing the use of it out this year.
You can still buy slack tubes filled with mercury.
As for lead, the 60/40 solder you buy right now is currently RoHS approved.
Posted: Mon Aug 13, 2007 7:09 pm
Are you absolutely shure about this?Brian Wallace wrote:As for lead, the 60/40 solder you buy right now is currently RoHS approved.
Larry
Posted: Mon Aug 13, 2007 7:36 pm
I think the Dagnall OT's got rid of the self leads at some point between the years mentioned. Probably closer to the plexi era than later.
Posted: Mon Aug 13, 2007 8:15 pm
Larry,
Heat of the moment thing.
Lead solder is fine if you are a hobbyist according to some of the literature I have read.
Lead solder is still being sold and being used though, so it was not outlawed in 1975.
Heat of the moment thing.
Lead solder is fine if you are a hobbyist according to some of the literature I have read.Lead solder is still being sold and being used though, so it was not outlawed in 1975.
Re:
Posted: Thu Jul 15, 2021 6:47 am
Sorry I don't understand which are the asbestos boards in marshall amps. Are you referring to circuit board or to transformer cardboard/paper? Thank you very much!Bunnest wrote: ↑Mon Aug 13, 2007 12:19 pmRockstah, my understanding is that the EPA (Environmental protection agency) outlawed certain elements in '75, mercury and lead, which was probably loaded in the iron in the early trannies. Ever notice that heavy "knock" in the old marshalls, that certain frequency that jumps out at ya, I bet that's the reactive mercury and lead (hint mercury magnets was around since like the 50s, hence the mercury name??); Also, ever notice that fire resistant material in the early boards, I think they call it asbestos, that was outlawed also. Too bad, it made the best anti-heat material in the amps...