CurtPalme.com Home Theater Forum

[nautikal]

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My torus screen is 96x54 with moderate curves (the center is a little over 6" inward). I built it using Vutec Pearlbrite 3.1 gain material from Jason Turk and have a 80mm fan sucking air out. Now that I have my projector setup, I notice vertical lines on the screen where the image is much brighter during lighter scenes. It almost looks like the material was stretched too much, yet without the fan there are still wrinkles. I don't think a 30cfm 80mm fan has the power to deform the screen material although it seems to be able to stretch it out. When I made the screen, I stretched it over the sides tightly and stapled it. 2 weeks later, the fan had sucked the material to the back of the frame so I had to turn off the fan and stretch out the new wrinkles. Now a few months later, without the fan there still even more wrinkles . It seems as if the material just keeps stretching; are the marks from the stretching? In other words do I need new screen material ? This material seemed to be popular among torus users when I purchased it so I'm trying to figure out why its not working out with my torus . (btw i posted this at AVS as well)

[bfeils]

I had similar marks on draper m-2500 torus I built. I don't think it was form stretching. By the way you may want to consider putting in a speed control for your fan. If starts to stretch to much all you have do is turn down the fan instead of pulling your screen tighter. works great on mine.

[jask]

not sure if this will help but my draper m1300 had wrinkles from how it was rolled after three days on the frame without improvment I grabbed my heat gun... all the wrinkles are now gone.
it is very easy to trash a screen doing this -overheating will change the sheen of the fabric if you are not keeping the gun moving.

[Jesse S]

nautikal-

I did a Screen Goo 1.8 gain screen of 96x54" and with my XG it seems a bit dim. I've seen the Pearlbrite with 9" crt's, how do you like it with the XG?

Also, what's the pricing like these days on the Pearlbrite? PM me if you think it's more appropriate.

[nautikal]

[Person99]

[Jesse S]

I don't know what gives you that idea. I had a 1.2 sample from Carada and it was about the same as my matte white gesso DIY screen. My Goo screen is significantly brighter than both of those. Also, I have the original formulation, not the later ~1.5 stuff.

Saying Goo is 1.0 gain is wrong and makes me wonder what your motives are.

[Axatax]

There was a fairly large thread on AVS about stretchmarks with torus and PearlBrite. In short, it is a problem with this material.

[ElviraJoy]

Russian spamere I am I am. I can spam I am I am. Spam you tu? Boo hoo, boo hoo.

[Tom.W]

[garyfritz]

Probably some relatively-intelligent spammer robot. It searched for "stretch marks" and posted a come-on for anti-aging cream -- which would probably help stretch marks.

[WanMan]

That's funny. When a bot ain't smart enough.

Anyway, my Draper M1300 had imperfections in the material itself. Not stretch marks like in the posted picture, but just inconsistencies seen in the material. It was noticeable both with a uniform illumination (at various IRE) and also with content playing. I arranged through the reseller for Draper to drop-ship me another unit (returning the first one), but the problem persisted.

I just gave up on my expectations of getting a good screen for $4-500 and kept the second one.

[davidcrowe18]

I still have a roll of pearlbright left over from the last torus. I don't remember it stretching as much as reported here.