Halogen vs Incandescent PAR Lamps

[Bubby4j]

I've been tasked with ordering some PAR64 lamps for my church. I notice that they make halogen PAR lamps in addition to incandescent. For example, these two are the same wattage/beam angle/lamp life/brand, however the halogen lamp has 6,000 more centerbeam candlepower (sadly they don't both have lumens in the specsheets). Here are the lamps I'm looking at:

https://www.1000bulbs.com/product/69858/SYLVANIA-56007.html

https://www.1000bulbs.com/product/6737/STAG-123621.html

The difference is $1. Am I missing something? Are there other differences? Any other pros/cons?

 

[JD]

Welcome to the wonderful world of lamp pricing! Makes no sense, never has. Needless to say, the halogen one doesn't get that big ugly black spot on the reflector as it ages.

One thing- The halogen one is an aluPAR, which is a much lighter lamp because the back is spun aluminum. The other one is a heavy glass bottle. Sylvania has been promoting the aluPAR for awhile. Haven't heard of any downside yet. Others may chime in with more information.

 

[gafftapegreenia]

The aluPAR is noticeably brighter than a standard PAR of equal wattage. I've seen them side by side at USITT. I'd say that the beam is also smoother, more Source 4 PAR like even.

My guess is that both of those PAR lamps are actually halogen incandescent. Halogen is just a type of incandescent lamp. I bet whoever put those on the the website just typed in halogen for the aluPAR and incandescent for the regular PAR. I don't know if you can even get non-halogen regular tungsten incandescent PAR64 lamps.

 

[epimetheus]

There's also a 100K difference in color temp. Interesting that the candlepower difference is only ~5.4%.

 

[Brandon Merkle]

It's that color temp difference you have to watch out for. It can bite you if you're not prepared, and you split your rig between the aluPar and the regular incandescent. If you have to, you can always throw a CTO filter in to compensate.

 

[DELO72]

I've been tasked with ordering some PAR64 lamps for my church. I notice that they make halogen PAR lamps in addition to incandescent. For example, these two are the same wattage/beam angle/lamp life/brand, however the halogen lamp has 6,000 more centerbeam candlepower (sadly they don't both have lumens in the specsheets). Here are the lamps I'm looking at:

https://www.1000bulbs.com/product/69858/SYLVANIA-56007.html

https://www.1000bulbs.com/product/6737/STAG-123621.html

The difference is $1. Am I missing something? Are there other differences? Any other pros/cons?

____________________________

So here is the real answer: The PAR 64 500W lamp (all brands) uses a pure incandescent capsule still. NOT HALOGEN. The AluPAR uses a Halogen Capsule. The color Temperature is about 200K+ higher (cooler), and so it appears much brighter visually than the incandescent PAR lamp. I think the ALUPAR is around 3150K, and the PAR64 500W is around 2900K or so.

Glass PAR capsules:
PAR 56 300W - Incandescent
PAR 56 500W - Halogen
PAR 64 500W - Incandescent
PAR 64 1000W - Halogen

Alupar- All types use Halogen

Lumens are a useless rating in PAR lamps as lumens is "total light output in all directions", and since PAR lamps are full optical systems with a reflector and a lens, lumens has no meaning as the light is collected and emitted in only one direction. Instead the Center Beam Candlepower is the accurate light output spec. to consider when comparing brightness.

Hope that helps! The other nice aspect to AluPARs is that they don't emit any spill light out the back like glass PAR lamps do.

 

[gafftapegreenia]

Ahh, interesting! I never realized that.

 

[ship]

If I had the ability I would go AlumiPar - this in say as above mentioned them being different and switching all or just switching say some at a time all of one color or location at a time and saving the swapped ones to spares for the not switched ones. Going brighter makes it seem fresher and more output as always wanted. Might also be able to qualify for a tax break or energy company rebate that will pay in part for the costs.

 

[Bubby4j]

Thanks everyone! We went with the aluPAR.