I think these will work for me! 6400K lights

[nothing.sound]

http://www.amazon.com/PAR30-36LED-Da...6913719&sr=8-3

hey guys above my t.v. in my theatre room I have three potlights. I was browsing amazon and came across these and couldn't beleive it. Should I buy 3 of these since I already have the potlights there for backlighting.

I thought we needed 6500k though, these are 6400. Let me know what you guys think, you can see pics of my setup on the bottom half of my theatre page. Thanks

[liquidice]

the only thing you'd want to make sure of whether you buy 3 or not, is that the light does not cast on the tv at all, and rather is completely behind the set. I couldn't see on amazon page if they were more of a spot or a flood. Also looking at your gallery I couldn't really see exactly where the fixtures were. Can you take a photo of the ceiling and tv?....maybe from the side to see how far back the lights are? If not, just describe. I would think two bulbs would get you buy, if you can leave the middle one off, or without a bulb. I would then aim the far right light towards the back left of the tv, and vice-versa for the left bulb, if that makes sense. A third bulb might cast two much light. Only problem with the bulbs is you probably can't control the light output like the fluorescent bulbs with the bulb cover. With those you can turn a bevel to cover up some of the bulb.

[nothing.sound]

hey liquidice, thanks for the reply. yeah the potlights are behind the t.v. about a foot or so, underneath a bulkhead. maybe even one light will do the trick. I'll try to post some pics tonight.. do you know if the color temperature is ok or not? By the way who is that in your avatar pic? (The girl from Evanesence?)

[liquidice]

Originally Posted by nothing.sound

(The girl from Evanescence?)

I won't tell, but no it's not the Evanescence chic

I feel 6400k is as close as you can get to the rule of using 6500k. In fact, I have some T5 mini fluorescent fixtures that I plan on buying some 6400k bulbs for. They will be exactly like the ideal-lume fixtures that sell for around 69 bucks. I think I will be fine with it being that close in color. Another factor you want to consider too is the color of your wall behind the tv.

Kodak 18% gray is kind of an industry standard for color behind a viewing area.

[nothing.sound]

the wall is flat black.

[Deciazulado]

Originally Posted by nothing.sound

I thought we needed 6500k though, these are 6400.

The difference between 6400ºK and 6500ºK is 0.2 decamireds (Think of it as 0.2 dBs) so probably not noticeable just from the difference in degrees Kelvin. For example average daylight (about D60) is 2.2 decamireds away from overcast daylight (D65) or 1.5 decamireds from cloudless direct Sun Daylight (D55) (Sun behind the camera) (And this changes during the day as the Sun rises and goes down)

A more important spec is the CRI (Color rendering index) and if the light follows the true Daylight (D65, D60, D55, D50 etc) characteristic curve. Degrees Kelvins alone tells you how close it look to a Blackbody radiator (a metal ) heated to that temperature.

In any case that light works much better than using a regular Tungsten bulb (about 2900ºK or T29) or some cheap fluorescent specially if the background wall where the light is hitting on is trully neutral (white/grey/black that reflects all frequencies equally)


(Most of the lightbulbs I use are D58 CRI96)

[liquidice]

thanks for that info Deciazulado!

As far as the black wall, that is a very hard thing to try and illuminate. A lighter, neutral color behind the tv will improve the perception of contrast and sharpness.

I had asked Alan Brown, president of Cinemaquest about this when you posted you had the black wall, because I really didn't know the answer. This is where my information came from, and this was his final comment:

"I realize there is a certain segment of the videophile community that believes a black wall behind the TV is beneficial in some way. My study of human perception leads me to advise against this practice, if perceived image quality is your top priority."