Yovanxer ALR Screens for standard throw projector - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 8 Old 02-11-2020, 09:05 AM - Thread Starter
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Yovanxer ALR Screens for standard throw projector

Has anyone heard of Yovanxer screens?
I found the screen on aliexpress. The specs looks very interesting:

https://www.aliexpress.com/item/3301...27092e0e2GWzvV

Material: PVC
Model Number: ALR-CGS080-150
Type: ALR projector Screen
Gain: 1.2-1.6
Viewing angle: 160
Price: 100 inch screen material costs USD 185

The screen consist of multilayer optical structure wich includes fresnel and cylindrical lens layer among others.
Apparently the ALR screen is suitable for short throw projector(focal length more than 1.5m), Medium and Long focus projector.

Does anyone know something similar? Is a screen with the above specs even possible?
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post #2 of 8 Old 02-11-2020, 09:42 AM
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The smallest screen is 80". The throw ratio from 1.5m would be 0.84x. I don't believe any ALR screen can be used with a throw ratio that small.

For that cost better buy some Elite/Carl's ALR and mount it on a wooden frame. At least you know what you're getting.

Gain 1.2-1.6? So they have different versions?
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post #3 of 8 Old 02-11-2020, 09:47 AM - Thread Starter
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Originally Posted by noob00224 View Post
Gain 1.2-1.6? So they have different versions?
I think the gain value will change slightly in dependency to the viewing angle, which is quite normal for ALR.
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post #4 of 8 Old 02-11-2020, 10:04 AM
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Quote:
Originally Posted by dkol View Post
I think the gain value will change slightly in dependency to the viewing angle, which is quite normal for ALR.
No that's not normal.

The way ALR fabrics are measured in gain and presented are either with a half gain value, total viewing angle, or with a graph. The half gain angle is the angle that screen brightness is half from what it is when viewed from central axis.

This screen has neither. It just says:

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post #5 of 8 Old 02-11-2020, 10:47 AM
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If it has fresnel/lenticular layers it should completely reject these overhead lights.

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post #6 of 8 Old 02-12-2020, 01:36 AM - Thread Starter
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Quote:
Originally Posted by noob00224 View Post
No that's not normal.

The way ALR fabrics are measured in gain and presented are either with a half gain value, total viewing angle, or with a graph. The half gain angle is the angle that screen brightness is half from what it is when viewed from central axis.

This screen has neither. It just says:
Thanks for the clarification. I am quite new to this topic.
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post #7 of 8 Old 02-12-2020, 01:37 AM - Thread Starter
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Originally Posted by bdht View Post
If it has fresnel/lenticular layers it should completely reject these overhead lights.
This makes sense.

Last edited by dkol; 02-12-2020 at 04:03 AM.
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post #8 of 8 Old 02-14-2020, 10:31 PM
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I just bought one of these screens for $44 a few days ago..



https://www.luxinishop.com/products/...#targetreviews


I got a shipping notification today. I'll post my results when I get it and my new jvc setup.


the screenshots are the same as this this seller
https://www.aliexpress.com/item/3285...1-0dfcf6cc6764

Last edited by augiedoggy; 02-18-2020 at 11:15 AM.
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