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Old 16th June 2012, 04:18 PM   #21
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The OP had a great idea with this thread, maybe a little aggressive out of the box.

I was hoping someone would build the the 555 or a modern interpretation for us to play with.
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Old 16th June 2012, 06:00 PM   #22
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They have. You just have to pay for it.

Me, I'm way more impressed with the total package available off the shelf then something that sounds like someone shouting down a hallway.
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Old 17th June 2012, 03:03 AM   #23
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Fellows, I have no idea what you are thinking about?

All I did is to split off the topic of the 555's construction from the thread on more general issues. There was at least one or two interested in the topic in that thread.

If no one else is interested in the discussion, then that's how it goes.

Those with a perpetual sour grapes attitude - you know who you may be - need not participate. Positive posts are greatly preferable.

Speaking for myself, I can build the driver save the diaphragm. The diaphragm is the hardest part to duplicate. More to it than meets the naked eye. That's true of any compression driver, but equally so or more so for the 555... lacking one in hand, that job it much harder to make happen.

_-_-bear

there are at least two clones commercially available now from asia, if anyone wants to buy one or two for themselves... fyi.
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Old 17th June 2012, 03:03 AM   #24
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Quote:
Originally Posted by DavidL View Post
How can what has already been beat to death go any further? Is anyone going to actually build a 555 type driver or is this just a mental exercise? After the previous 1000+ post thread I think everyone got what needed to be said ..........said.
DavidL if you are not interested in the discussion going on in this thread, then the easiest thing to do is stop reading it.
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Old 19th June 2012, 11:08 PM   #25
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"Speaking for myself, I can build the driver save the diaphragm. The diaphragm is the hardest part to duplicate. More to it than meets the naked eye. That's true of any compression driver, but equally so or more so for the 555... lacking one in hand, that job it much harder to make happen."

_-_-bear

How about asking Joe on that other list if he could get us a broken one? That would at least be a starting point. (It would still be tough to do)
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Old 20th June 2012, 12:06 AM   #26
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Quote:
Originally Posted by bear View Post
If no one else is interested in the discussion, then that's how it goes.
I'm interested, please keep it coming, thanks.
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Old 20th June 2012, 01:35 AM   #27
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If you are referring to Joe Roberts, he does not have one.

It is not sufficient to merely have one. I suspect that this is part of why the clones are *reported* to not sound as good as the originals...

...the exact manufacturing process plays a role. It's metallurgy in practice.

Otoh, some might say it makes no difference.

_-_-bear
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Old 20th June 2012, 04:54 AM   #28
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Quote:
Originally Posted by bear View Post
If you are referring to Joe Roberts, he does not have one.

It is not sufficient to merely have one. I suspect that this is part of why the clones are *reported* to not sound as good as the originals...

...the exact manufacturing process plays a role. It's metallurgy in practice.

Otoh, some might say it makes no difference.

_-_-bear
Yes I was being hopefull, too bad. Yes it would still be tough with a original, but easier than without one at all. Do you remember Paul's diy compression field coil driver ? He made his own diaphram. (that is what I was basing my hope on)
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Old 20th June 2012, 05:37 PM   #29
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are there any detailed drawings with dimensions of the original diaphragm and/or phase plug?
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Old 20th June 2012, 08:51 PM   #30
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Quote:
Originally Posted by bear View Post
...the exact manufacturing process plays a role. It's metallurgy in practice.

Otoh, some might say it makes no difference.

_-_-bear
You make it sound like metallurgy is some secret arcane process that isn't thoroughly documented and can't be duplicated.

(secretly chants over Au doped Si pillars)
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