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  #1  
Old 07-25-2011, 08:31 PM
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Default 2 ply heads - ply separation

Aquarian make a big deal about their 2 ply skins having the air vacuumed out so you don't get the ply separation - http://www.youtube.com/watch?v=ot31HbyOlWE

Does it really matter? I would have thought it would, though I'd have thought that Remo and Evans would have tackled this if they thought it mattered?

I don't keep my ear too close to the ground so I may have missed Remo and Evans tackling this - but I took off a coated G2 the other day and spotted 'the oiley look' when I flipped the skin over - so I guess Evans haven't?

I was gunna buy some Pinstripes but I'm wondering whether I should consider Aquarian instead...
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Old 07-26-2011, 01:27 AM
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Default Re: 2 ply heads - ply separation

FWIW, (and it's not worth much!) the Aquarian two ply is the only two ply head I've ever had a problem with. I had one - just one, mind you - that sounded OK to start with and then just went dead. When I removed the head to examine it, the bottom ply was wrinkled, so it had somehow come loose from the counterhoop. I'm sure they would have replaced it, but I didn't bother.

I've used tons of Remo two ply heads and a fair number of Evans, all with no problems. I wouldn't worry about it, either way, really. I don't think the vacuuming will make a huge difference.
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Old 07-26-2011, 01:36 AM
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Default Re: 2 ply heads - ply separation

I have never had a Remo or Evans head bubble and blow up like a football because the air wasn't vaccumed out. The plys have laid one on top of the other for as long as I've been using them.

I'm calling complete and utter marketing BS, until someone can prove the merits to me.
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Old 07-26-2011, 01:56 AM
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Default Re: 2 ply heads - ply separation

LOL....funny this thread came up because I have Aquarian Super 2 Clear heads and you can see the rainbow-ish colors in between the two layers clears as daylight! I would think it would not matter sound-wise but what gets me is the false advertising on Aquarians part.

Grumble Grumble!
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Old 07-26-2011, 01:58 AM
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Default Re: 2 ply heads - ply separation

Just a follow up to my reply below....I forgot to mention that even though i dislike the false advertising on Aquarians part I'm still like their heads a lot!
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Old 07-26-2011, 06:51 AM
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Default Re: 2 ply heads - ply separation

i think aquarian heads sound better than remo or evans.... but its not like remo or evans sound bad... i mean they are good, just aquarians sound better to me
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Old 07-26-2011, 07:01 AM
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Default Re: 2 ply heads - ply separation

Quote:
Originally Posted by uniin View Post
i think aquarian heads sound better than remo or evans.... but its not like remo or evans sound bad... i mean they are good, just aquarians sound better to me
Yeah, it's really just a matter of taste. And, as I've often said, 20 ft from the drums, no one will be able to tell what brand of head you are playing anyway...
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Old 07-26-2011, 02:45 PM
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Default Re: 2 ply heads - ply separation

Quote:
Originally Posted by PeteN View Post
LOL....funny this thread came up because I have Aquarian Super 2 Clear heads and you can see the rainbow-ish colors in between the two layers clears as daylight! I would think it would not matter sound-wise but what gets me is the false advertising on Aquarians part.

Grumble Grumble!
No grumble grumble about it mate, it's false advertising. Unless you've had them on for 5 years, then the heads are probably beyond a reasonable life span!

Well considering the replies it seems pretty conclusive, retail therapy is coming my way in the form of some Pinstripes.
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Old 07-26-2011, 03:40 PM
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Default Re: 2 ply heads - ply separation

Remo and Evans have tackled this. Evans' factory tour on youtube talks about it.

Pinstripes and some other 2 ply heads are not just two free floating ply vacuumed together. Some have a filler between the plys for muffling purposes. That's the rainbow-ish stuff you see in the sun. I've seen it on my clear Pinstripes.
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Old 07-26-2011, 03:48 PM
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Default Re: 2 ply heads - ply separation

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Originally Posted by wsabol View Post
Some have a filler between the plys for muffling purposes. That's the rainbow-ish stuff you see in the sun. I've seen it on my clear Pinstripes.
No "filler" in a Pinstripe mate. The rainbow colours are a result of light being reflected through the two plies, not because there's oil or any other liquid there. I believe one of the Evans heads has....Hydraulics maybe, but definitely not the Pinstripe.
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Old 07-26-2011, 04:12 PM
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Default Re: 2 ply heads - ply separation

"If it were produced without any additives, the surface of the film would be so smooth that layers would adhere strongly to one another when the film is wound up, similar to the sticking of clean glass plates when stacked. To make handling possible, microscopic inert inorganic particles are usually embedded in the PET to roughen the surface of the film."

Got this of wikipedia the "mylar" page might explain the rainbow effect and that Mylar cant really stick as one and you will always have a little rainbow (space).
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Old 07-26-2011, 04:51 PM
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Default Re: 2 ply heads - ply separation

Quote:
Originally Posted by Pocket-full-of-gold View Post
No "filler" in a Pinstripe mate. The rainbow colours are a result of light being reflected through the two plies, not because there's oil or any other liquid there. I believe one of the Evans heads has....Hydraulics maybe, but definitely not the Pinstripe.
I guess you are right, I don't know here I heard that.

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Old 07-26-2011, 05:40 PM
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Default Re: 2 ply heads - ply separation

We don't use a vacuum process with 2-ply heads because the optimal resonant sound will be achieved by allowing both plies to resonant freely. Removing air would restrict the vibration of the film.

We don't add anything between the plies for any heads except the Hydraulics, which have a thin layer of oil in between. The rainbows that you see with 2-ply heads are referred to as "Newton Rings" and are simply a result of light passing through two clear surfaces.
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  #14  
Old 07-27-2011, 12:37 AM
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Default Re: 2 ply heads - ply separation

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Originally Posted by wsabol View Post
I guess you are right, I don't know here I heard that.

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Yes, what you're seeing are "Newton rings". You're seeing them because of the light, but the actual cause is the two highly polished sheets of Mylar are contacting each other with varying degrees of uneven pressure. If the pressure between the Mylar sheets was precisely even throughout the head, these would not be visible.

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Old 07-27-2011, 04:09 AM
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Default Re: 2 ply heads - ply separation

Precisely........................
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Old 07-27-2011, 09:40 AM
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Default Re: 2 ply heads - ply separation

Quote:
Originally Posted by EvansSpecialist View Post
We don't use a vacuum process with 2-ply heads because the optimal resonant sound will be achieved by allowing both plies to resonant freely. Removing air would restrict the vibration of the film.
everyone has their own company model, i just think aquarians sound better perhaps due to this vacuum process...

also i've had bad experiences with evans heads, not to say they were bad but oh well. i'm happy with aquarian :]
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Old 07-27-2011, 03:37 PM
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Default Re: 2 ply heads - ply separation

Quote:
Originally Posted by uniin View Post
i just think aquarians sound better perhaps due to this vacuum process...
PM me......I have a bridge I'd like to sell you......AND a rich Nigerian uncle who has a few million dollars he's happy to park into your account.

I'll do you a special deal.......just 'cos it's you. :-)
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  #18  
Old 07-27-2011, 03:55 PM
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Default Re: 2 ply heads - ply separation

i don't need a bridge i don't play my guitar anymore
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  #19  
Old 07-27-2011, 04:41 PM
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Default Re: 2 ply heads - ply separation

Drum gear companies say lots of silly things to get us to buy their stuff. Sadly, it usually works. Peace and goodwill.
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