Greenback 6402 Cones

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jnew
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Greenback 6402 Cones

Post by jnew » Mon May 06, 2019 6:09 pm

I have a pair of these in 8 ohm. I would like to trade them for a pair of 16 ohm. Or hit me up if you have a pair in 16 ohm to sell. :D
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JimiJames
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Re: Greenback 6402 Cones

Post by JimiJames » Thu May 09, 2019 7:39 am

You are looking for 53-H1777's if you cannot find what you're looking for. :wink: Good luck! :D
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jnew
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Re: Greenback 6402 Cones

Post by jnew » Thu May 09, 2019 7:56 am

These are one in the same?
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Re: Greenback 6402 Cones

Post by JimiJames » Thu May 09, 2019 11:20 pm

jnew wrote:
Thu May 09, 2019 7:56 am
These are one in the same?
:scratch: Do you mean: Are they one and the same? :what:
Are you asking a question or stating? :shrug: heh

The cone codes Celestion used for 6402's = were Kurt Mueller cones. The 1777 being lead cones (75hz) while the 444 are bass (55hz) cones. Celestion reintroduced the G12M 25w 75hz in '89 with a different number or different nomenclature.
IOW same cone - stamped differently than the mid '70's.
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Scumback Speakers
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Re: Greenback 6402 Cones

Post by Scumback Speakers » Fri May 10, 2019 10:39 am

According to Duncan Boniface, former lead speaker engineer at Celestion, the 6402 cone was discontinued, and then it came back as a fictitious cone # 53H1777. The old cone dating style used to have the week of the year as date code. So you'd see old Pulsonic cones labeled as 09 102 003, with the 09 being the week it was made that year (the year was not specified, however!).

So when they made this cone # up they gave it a false week, 53, then added the H1777 after it. By most reports it's the 6402 cone with a new designation.

I don't even know where you find those anymore, as I believe that was discontinued as well, so now you have newer variations, with new numbers.

I'm glad I custom order my cones from Kurt-Mueller. If I had to keep track of everything Celestion does with cone number stamps, I'd go insane. LOL

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Re: Greenback 6402 Cones

Post by jnew » Fri May 10, 2019 12:30 pm

Ok so this is what stumps me. When those 1st generation Greenback reissues came out with the 6402 cones, I thought they were Celestion made cones. (celestion did in fact make cones, like the RIC's). But if they were Kurt Mueller cones, why the change in description to the same 1777 cone? And then later change back to 53H1777. This doesn't make a lot of sense. That being said, the Blackbacks speakers with the 1777 cones from the late 70's definitely sound different than the 6402 re issues. 6402's are less hard and aggressive in some of the higher freq's which seem to sort of round out fill some low mid quite nicely. I am aware that there are other things that can make the same cone behave and sound different but if the 6402 reissues indeed use different materials, techniques, etc, then those what I'm after anyway, if that makes sense. But you do make a good point. If the 53H1777 is the same cone, then the early reissues with those cones should also include whatever materials, techniques, etc, right? F&^K, IDK. Shit gets crazy. :lol: :lol:
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Re: Greenback 6402 Cones

Post by Scumback Speakers » Sat May 11, 2019 1:14 pm

I gave up learning or caring about why cone #s change with them years ago. I learned a lot, and I'm sure not ALL of why they number their cones as they do, and why they have so many cones with the same #'s now. You can find mis-stamped cones through the years as well, adding to the confusion.

I just have Kurt Mueller make my cones with easy to read numbers 1,2, 3 & 4. Two different 75 and 55hz cones, then I do treatments here to change the sonic qualities for different models.

If you get the History of Marshall book and read up on all the variations they had, you'll get a headache! LOL

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Re: Greenback 6402 Cones

Post by jnew » Sat May 11, 2019 2:05 pm

I hear ya. Funny you should mention that. I was just swapping cabs with the 55Hz M's that I i got from you and did notice a "3" on one of the cones. :lol: :lol:
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