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[VXL V6]

Does anyone know where to get either Phillips or Bosch 6000K HID bulbs at decent prices?

Think i'm going to put my original 4300K Phillips bulbs back in as intermittently the ebay specials won't strike. This can be either side at any random time so i'm sure it's not the igniters coupled with the fact that when the phillips bulbs were in they struck first time every time.

Nice job to do at night in the freezing cold!

[TheBoy]

Interesting, as I was looking at getting some.

Jimbob seems happy with his, though not sure he's done a winter yet.

[Jimbob]

Yep, been very happy with my 'no make' cheapies, been perfect over a year

much better than the 8 year old ones they replaced.

I wouldnt buy 6000K again though, found the (new) 4300's do illuminate better,

I would probably look for those, or 5000K.

[VXL V6]

Do you know which seller you bought them off?

[Jimbob]

dug out the invoice...

bought July 07 from Autobulbsdirect off ebay..

http://shop.ebay.co.uk/merchant/autobulbsdirect_W0QQ_in_kwZ1

or

http://www.autobulbsdirect.co.uk

now about £15 more a pair delivered than I paid.

[Dave DND]

I wouldnt but 6000K again though, found the (new) 4300's do illuminate better,

I would probably look for those, or 5000K.

Can someone explain these numbers to me please?

You all know I`m a non Omega owner, but just trying to keep up to speed with you all, and curious as to what these numbers mean?

I`m presuming some sort of intensity? If so, do the "ballast packs" (if I have this right), operate with all intensities of bulbs, or are there different ones for different bulbs etc?

 :-?

[Jimbob]

Purely colour temperature (colour).

Common ones are :

4300K (Kelvin) - A yellowey light, but provides the best illumination
6000K - A pure White / slight blue tint, looks good, good illumination
8000K - Bluey Light, showy, not so illuminating
10000K - Purpley Light - great for photos, shows etc, not so good on the road.

http://cgi.ebay.co.uk/2-HID-XENON-PAIR-OEM-REPLACEMENT-BULBS-D2S-6000K-8000K_W0QQitemZ320303254939QQcmdZViewItem?hash=item320303254939&_trkparms=72%3A1301|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14

shows some examples


Ballast packs are the same regardless.
Think it is acheived using gas levels in the bulb

[Dave DND]

Purely colour temperature (colour).

Common ones are :

4300K (Kelvin) - A yellowey light, but provides the best illumination
6000K - A pure White / slight blue tint, looks good, good illumination
8000K - Bluey Light, showy, not so illuminating
10000K - Purpley Light - great for photos, shows etc, not so good on the road.

http://cgi.ebay.co.uk/2-HID-XENON-PAIR-OEM-REPLACEMENT-BULBS-D2S-6000K-8000K_W0QQitemZ320303254939QQcmdZViewItem?hash=item320303254939&_trkparms=72%3A1301|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14

shows some examples


Ballast packs are the same regardless.
Think it is acheived using gas levels in the bulb

Cheers !   Now understood  

[Jimbob]

No worries, should have added, the Vauxhall OEM ones are 4300K

[Marks DTM Calib]

Purely colour temperature (colour).

Common ones are :

4300K (Kelvin) - A yellowey light, but provides the best illumination
6000K - A pure White / slight blue tint, looks good, good illumination
8000K - Bluey Light, showy, not so illuminating
10000K - Purpley Light - great for photos, shows etc, not so good on the road.

http://cgi.ebay.co.uk/2-HID-XENON-PAIR-OEM-REPLACEMENT-BULBS-D2S-6000K-8000K_W0QQitemZ320303254939QQcmdZViewItem?hash=item320303254939&_trkparms=72%3A1301|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14

shows some examples


Ballast packs are the same regardless.
Think it is acheived using gas levels in the bulb

Its achieved by adding impurities into the bulb to alter the colour temp.

Any way, some info the Kelvin Colour temperature rating.....and how sometyhing that is normaly associated with heat is apllied to light!

"The color temperature of a light source is determined by comparing its hue with a theoretical, heated black body radiator.
The Kelvin temperature at which the heated black-body radiator matches the hue of the light source is that source's color
temperature, and it is directly related to Planck's Law". (Wikepedia).

So, in simple terms, it relates to the FACT that when something is heated up it changes colour.......and these colours were charted by a guy called Mr Kelvin! The colours that these heated bodies gave off have been assigned a K rating....and the hue of the bulb light ouput is compared to this standard!

[Marks DTM Calib]

Should also add that subjectively, 5000K is perceived to be the optimum temperature of light to support activities requiring concentration.........but this is subjective!

[Dave DND]

Should also add that subjectively, 5000K is perceived to be the optimum temperature of light to support activities requiring concentration.........but this is subjective!

I think you`ve just answered the question I was about to ask !

I previously assumed that the higher the Kelvin figure, the brighter the bulb? but if I understand correctly then, the higher the Kelvin figure, the purer the colour intensity, but not necessarily a colour spectrum given off that is as useable to the human eye, with the optimium being 5000K? if that makes sense?


 :-?

[Jimbob]

Should also add that subjectively, 5000K is perceived to be the optimum temperature of light to support activities requiring concentration.........but this is subjective!

I think you`ve just answered the question I was about to ask !

I previously assumed that the higher the Kelvin figure, the brighter the bulb? but if I understand correctly then, the higher the Kelvin figure, the purer the colour intensity, but not necessarily a colour spectrum given off that is as useable to the human eye, with the optimium being 5000K? if that makes sense?


 :-?

Yup, which is why the 4-6000 range is popular

[Marks DTM Calib]

Should also add that subjectively, 5000K is perceived to be the optimum temperature of light to support activities requiring concentration.........but this is subjective!

I think you`ve just answered the question I was about to ask !

I previously assumed that the higher the Kelvin figure, the brighter the bulb? but if I understand correctly then, the higher the Kelvin figure, the purer the colour intensity, but not necessarily a colour spectrum given off that is as useable to the human eye, with the optimium being 5000K? if that makes sense?


 :-?

Nope, the K rating relates to the Hue......nothing to do with the brightness.

Although in theory, if you get the optimum Hue then you can tolerate a lower light output or the light will appear brighter for the same intensity

e.g. if we assume that all HID bulbs no matter what the K rating are the same efficiency and consume the standard 35W....then a 5000K bulb will appear brighter although the light intensity of them all will be the same (but of different sections of the spectrum)

[Martin_1962]

And Mr Kelvin was British - unlike Mr Farenheight