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Does this converter do the job?

 
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SPL800



Joined: 10 Nov 2009
Posts: 128
Location: Israel


PostLink    Posted: Sun Oct 06, 2019 9:54 am    Post subject: Does this converter do the job? Reply with quote


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I have 2 lumagen scalers at home.
Up until now I have been using the HDQ as a scaler and enjoy the advantage of D/A converter that it has.
The disadvantage of the HDQ are
1. Can except up to 1080p 24Hz (i need 60Hz)
2. Limited gamma corrections.
therefor. Im thinking of changing to the other lumagen that I have (Radiance XE 3D).
I will need D/A converter
Does the simple and cheap converter do the job?



hdmi to vga.png
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gjaky



Joined: 05 Jun 2010
Posts: 2647
Location: Budapest, Hungary


PostLink    Posted: Sun Oct 06, 2019 1:17 pm    Post subject: Reply with quote

The item pictured has a male DB-15 plug that usualy associates with devices with VGA INPUT not output, so I'd say this one is a VGA->HDMI converter and not a HDMI->VGA what you'd really need
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
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kal
Forum Administrator


Joined: 06 Mar 2006
Posts: 15827
Location: Ottawa, Canada

TV/Projector: JVC DLA-RS56


PostLink    Posted: Sun Oct 06, 2019 2:01 pm    Post subject: Reply with quote

You're using an analog display? Which one?

I would stay away from very cheap ones as that kind of negates the point of using a good quality scaler if you're following it up with the cheapest D -> A converter. Moome makes some good quality ones for CRT projectors and may have other solutions too (You can email him at moome@curtpalme.com).

Kal

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SPL800



Joined: 10 Nov 2009
Posts: 128
Location: Israel


PostLink    Posted: Mon Oct 07, 2019 12:57 pm    Post subject: Reply with quote

kal wrote:
You're using an analog display? Which one?

I would stay away from very cheap ones as that kind of negates the point of using a good quality scaler if you're following it up with the cheapest D -> A converter. Moome makes some good quality ones for CRT projectors and may have other solutions too (You can email him at moome@curtpalme.com).

Kal


Hi Kal

i used to have a moome card (early models) connected to my Barco 1209s
what i didn't like about it. is that every time i load a movie the signal in the projector was gone for 2 seconds and returned.
I am concerned that this may damage the projector in long run.
the benefit of lumagen is that the projector all the time gets same signal and no jumping to off sink.

Does this cheap converter will decreases the picture quality significantly?
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kal
Forum Administrator


Joined: 06 Mar 2006
Posts: 15827
Location: Ottawa, Canada

TV/Projector: JVC DLA-RS56


PostLink    Posted: Mon Oct 07, 2019 1:05 pm    Post subject: Reply with quote

SPL800 wrote:
Does this cheap converter will decreases the picture quality significantly?

I have no idea as we don't know anything about it.

Kal

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gjaky



Joined: 05 Jun 2010
Posts: 2647
Location: Budapest, Hungary


PostLink    Posted: Mon Oct 07, 2019 8:00 pm    Post subject: Reply with quote

I've had the white chinese HDMI converter, in its stock form it did not properly resolve 800x600 in bandwidth, but it was able to handle 1080P72Hz signal, though it was specified only for 1080P 60Hz.
After removing the output filters on the RGB lines then the bandwith increased a lot, so much it could properly resolve the 1080P 72Hz (with some inherent peaking), but the output is not very strong either. I think this is probably also based on the chinese EP94Z1E converter chip.

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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
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