Alright.... I'll bite ETC....
- Thread starterPie4Weebl
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NateJanota
Member
firewater88
Active Member
Just saw a demo of these side by side with a 575 lamp. Was pretty shocked to see the brightness and the color temp is close to the HPL. They LED demo had a EDLT lens tube and did seem brighter than a standard and the coloring was not white, more yellow like a traditional lamp.
I am interested in these for my lobby lighting with 30 S4 50deg down lights as my main lighting. Would save me a lot of labor in changing out the lamps 30' off the floor when they are on 18-20 hours a day sometimes. Already have dimming setup and all the AC circuits in place, so this would be a direct replacement.
Did just read about only 2 per D20 when in AC mode, which I would be and I have 3-4 on a circuit now. That might through a wrench in my "easy" replacement argument.
I am interested in these for my lobby lighting with 30 S4 50deg down lights as my main lighting. Would save me a lot of labor in changing out the lamps 30' off the floor when they are on 18-20 hours a day sometimes. Already have dimming setup and all the AC circuits in place, so this would be a direct replacement.
Did just read about only 2 per D20 when in AC mode, which I would be and I have 3-4 on a circuit now. That might through a wrench in my "easy" replacement argument.
A little off-topic I suppose, but what do you guys think about the new high efficiency incandescent that was just developed by MIT? I'd love to see a tungsten HPL with the power usage and life of an LED.
EDIT: If I had scrolled down more on the front page, I'd have seen the appropriate thread for this.. Sorry!
EDIT: If I had scrolled down more on the front page, I'd have seen the appropriate thread for this.. Sorry!
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techieman33
Well-Known Member
Sounds cool, but I think it'll be a long time if ever before we see anything come from this. There are so many things that get developed at universities and never make it to the mainstream. The way LEDs have taken off the last couple of years it would be a very big financial risk for someone to actually develop it into a real product and bring it to market.
GreyWyvern
Well-Known Member
Let's not derail this thread again, please!
MIT develops high efficiency incandescent
MIT develops high efficiency incandescent
The first video is just fun the second answers a lot of our product questions. (Nicely done @Jim Uphoff )
@STEVETERRY Thanks for that replacement cap I was bugging you about 4 or 5 years ago! It looks great so far. Only problem is I'm all 750 Watt fixtures in this theater now... hint hint... sorry. I know we are never happy out here.
Call your local dealer and let them know you want to see one. I'm sure demo units will be all over the place doing side by side shoot outs very soon.
@STEVETERRY Thanks for that replacement cap I was bugging you about 4 or 5 years ago! It looks great so far. Only problem is I'm all 750 Watt fixtures in this theater now... hint hint... sorry. I know we are never happy out here.
Just you wait gaff. In a year or so they'll have a S4WRD2 that'll be brighter enough that everyone who bought into the first one will have buyer's remorse and wish they had waited.
I jest, of course, but this is our future with LED's. No more same-fixture-for-fifteen-years-except-for-that-one-change kind of product development cycle.
I jest, of course, but this is our future with LED's. No more same-fixture-for-fifteen-years-except-for-that-one-change kind of product development cycle.
Scenemaster60
Well-Known Member
It is my understanding from others and also my personal observation that the 575 watt, 115 volt LL lamp (rated for 3050 K color temp) is by far the most popular lamp used in the Source 4.
The cut sheet output of the HPL 575/115x is 12,360 lumens while the the "standard" HPL 575/115 is 16,520 lumens with a color temp of 3250K.
In all of my travels, the only places that I encounter that use the standard lamp as opposed to the long-life are large professional theaters and some of the larger collegiate programs.
I think that some of this also had to do with the fact that the long-life 575 HPL lamp in the Source 4 performs similarly to an Altman 360Q or Strand Lekolite that is lamped with a 750 watt long-life EHG, which I always considered to be a performance standard that was in place from the mid-70s until the Source 4 caught on in the early 90s.
The cut sheet output of the HPL 575/115x is 12,360 lumens while the the "standard" HPL 575/115 is 16,520 lumens with a color temp of 3250K.
In all of my travels, the only places that I encounter that use the standard lamp as opposed to the long-life are large professional theaters and some of the larger collegiate programs.
I think that some of this also had to do with the fact that the long-life 575 HPL lamp in the Source 4 performs similarly to an Altman 360Q or Strand Lekolite that is lamped with a 750 watt long-life EHG, which I always considered to be a performance standard that was in place from the mid-70s until the Source 4 caught on in the early 90s.
NateJanota
Member
I'll tell you what I (and my parent company Universal) desperately want: an IP65 LED S4WRD. You want to talk about a bulk purchase, man, I'll find any reason I can to spec out LED replacements for our HPLs... less maintenance, better life... it's almost too good to be true. Except the IP20. This is Florida. Even the indoor fixtures suffer here.
So ETC
: Make it IP65 and nail yourself a spec for an entire park!!
So ETC
: Make it IP65 and nail yourself a spec for an entire park!!I'll tell you what I (and my parent company Universal) desperately want: an IP65 LED S4WRD. You want to talk about a bulk purchase, man, I'll find any reason I can to spec out LED replacements for our HPLs... less maintenance, better life... it's almost too good to be true. Except the IP20. This is Florida. Even the indoor fixtures suffer here.
So ETC
While I don't work for ETC, from discussions I've had I can say it's something that's being worked on. It's all about heat dissipation in an effective manner.
NateJanota
Member
Let me get a brown paper bag to breathe into... *hyperventilates* Yeah, that excites me. I can hear my maintenance people planning a party as we speak.
DELO72
Well-Known Member
Actually, they are about even. It changes from year to year as to which ones are more popular, but the swing is only about 3-4% difference each time, and some years the Long Life versions are the slightly higher movers, and some years it's back to the High output, short life ones that are in higher demand. Personally, I've never understood why anyone would choose a long life lamp. Here's why- You can always dim a short life, high output lamp down and make it last longer, and turn it into a short-life lamp (in terms of life and light output). You can't however (unless you are Spinal Tap and have an 11 on your 1-10 power settings) run a long life lamp at greater than 100% intensity, making it perform like a short-life lamp. So with the high output standard lamp, you get more options, and you basically get two lamps for the price of one. Run it at 95% on the board and it's now a long life lamp. Since designing is all about wanting the most options available to you, I'm very surprised we sell as many long-life lamps as we do.
To answer the earlier question about "Why would ETC design it to match the long life HPL and not the short life one that is brighter"-- think of it this way: The main benefit to LED is primarily in the lifetime (maintenance/replacement) and energy savings. The people who are seeking that are the ones that are already using the Long Life versions of the lamp for those reasons. Giving them even further energy and maintenance savings just makes sense as you are giving them more of what they want. For those using the high output lamps, it's because to them the most important thing is punch (sheer output), and the brighter, higher CCT that those lamps give them. There is probably a higher output, higher CCT one in the works for those other folks.
BillConnerFASTC
Well-Known Member
I wonder about all those installs I did in 80's and 90's with transformers tapped up to 132 or so to accommodate for voltage drop, mostly with CD80s, and I'm sure many retrofitted with Sensor. Think anyone configured these for a 120 or 115 max at the socket? Guessing if the long life was getting 120-125 at the socket, it might indeed put out and last as long as the short-life lamps.
I also wondered if the balance of long and short sales wasn't biased with television studios and professional theatre using the majority of the short life while schools and not for profits and such used the majority of the long life. We tend to spec long life lamps for the schools we do. I understand you're logic but do you think the band director who has been given the keys will? (Yes - I know I could set a max level but that seems unnecessarily Machiavellian.) We're I full time in charge of an designing for a theatre I'd go to short life 750s automatically (unless it was a small space with short throws - than short life 575's probably.)
