Tort Posted January 31, 2009 Share Posted January 31, 2009 I have some of the stairville par 56 led lanterns. I notice that the par 64 lanterns appear to be a very similiar wattage. What would the major difference be apart from the size of the lantern? thanks in advance. Link to comment Share on other sites More sharing options...
Rozztech Posted January 31, 2009 Share Posted January 31, 2009 As stairville sell many different types par56 and 64 led a link would be usefull to identify yours , for example by telling me you have a stairville par56 led can it could be any of these five or six that fit your description . please clarify Sam ;) Link to comment Share on other sites More sharing options...
Tort Posted January 31, 2009 Author Share Posted January 31, 2009 I have these: http://www.thomann.de/gb/stairville_led_pa...alu_schwarz.htm but was comparing to these: http://www.thomann.de/gb/stairville_led_pa...alu_schwarz.htm The 64 has less leds, uses 1 watt less and yet costs more money. Link to comment Share on other sites More sharing options...
Rozztech Posted January 31, 2009 Share Posted January 31, 2009 this may be incorrect and I will admit is not a very technical answer at all , but... Could it be due to the extra materials needed to create a larger lantern? Link to comment Share on other sites More sharing options...
Sound In Gloucestershire Posted February 1, 2009 Share Posted February 1, 2009 it doesnt say what the power of the LEDs are in the par64, just the consumption Link to comment Share on other sites More sharing options...
richardtank Posted February 1, 2009 Share Posted February 1, 2009 At first I would have said that there are more LEDs in the Par64 styled light. However, that seems not to be the case. In actual fact it's the other way round, which is even stranger! Link to comment Share on other sites More sharing options...
PhilB Posted February 2, 2009 Share Posted February 2, 2009 I have both the 56 and 64 LED cans by stairville and have tried to count the LEDs on each, I recon they have the same amount of LEDs! Unless Ive forgotten how to count. Due to their size, the 64s look much better when rigged next to other lights, where the 56s look very small, but sometimes small is better....! I have also been able to fix faulty 64s using parts from the 56s and vice versa. So I believe all the enternal parts are the same, just in a different tin! HTH Phil Link to comment Share on other sites More sharing options...
bigclive Posted February 2, 2009 Share Posted February 2, 2009 You can't really judge LED lights by their mains power rating. There is a massive range of quality between LEDs and you can get two greens from different sources (or even the same source) where for an equal power consumption one may be less than half the intensity of the other. How's the LED failure rate in these lights nowadays? Link to comment Share on other sites More sharing options...
richardtank Posted February 2, 2009 Share Posted February 2, 2009 I was just going off the information on the website about the LED count Link to comment Share on other sites More sharing options...
PhilB Posted February 2, 2009 Share Posted February 2, 2009 How's the LED failure rate in these lights nowadays? Not so good! I bought about 20 (a mixture of 56s and 64s) about 4 months ago and they are fine, but have bought another 10 this month and a few of the units have green/blue leds gone in them. Link to comment Share on other sites More sharing options...
Khimil Posted February 2, 2009 Share Posted February 2, 2009 How's the LED failure rate in these lights nowadays? Not so good! I bought about 20 (a mixture of 56s and 64s) about 4 months ago and they are fine, but have bought another 10 this month and a few of the units have green/blue leds gone in them. You might want to check if the fuses are gone. I had to change fuses to a couple of lanterns so I got the reds/greens/blues all working. Onething different between 56's and 64's is that it is possible to open the back side of the led par 64 in order to do maintenance (such as replacing fuses). With the 56s a lot more work has to be done in order to access the inside of the lantern. Link to comment Share on other sites More sharing options...
c0astman Posted February 2, 2009 Share Posted February 2, 2009 How's the LED failure rate in these lights nowadays? Not so good! I bought about 20 (a mixture of 56s and 64s) about 4 months ago and they are fine, but have bought another 10 this month and a few of the units have green/blue leds gone in them. Is there a difference in the beam angle between the two? I have bought some 10mm LED 64's (Eurolite's from Thomann) and the beam angle is alot tighter. I was considering buying 56's for the wider angle but if they are the same, I might get the 64's if they are easier to maintain. That said, the 56's cost less..... Link to comment Share on other sites More sharing options...
bigclive Posted February 2, 2009 Share Posted February 2, 2009 Not so good! I bought about 20 (a mixture of 56s and 64s) about 4 months ago and they are fine, but have bought another 10 this month and a few of the units have green/blue leds gone in them. The quality between batches or brands varies dramatically. Most often the LEDs themselves fail short circuit and put an extra strain on the other LEDs in series. The blues and greens are the ones that usually fail because they are based on Gallium Nitride technology, and I think the thin film construction makes them prone to failure. The older Gallium Arsenide technology used for the red LEDs is much more robust. Although not an ideal fix, you can sometimes "blow" the fault in a dead LED clear by applying a standard 1.5V cell across an LED via two wires. The high current clears the fault, but the voltage is too low to forward bias the LED and damage it if it does get some life kicked into it again. Not what I'd call a "professional" fix, but a bodge that might get some extra life out of a dead LED. Swapping it out completely is the better option. Link to comment Share on other sites More sharing options...
PhilB Posted February 2, 2009 Share Posted February 2, 2009 Id say the 64s are much easier to repair as you can open the back up! I have tested all the fuses in the faulty lanterns and none have blown, Id expect if one had blown, none of the green LEDs would work rather than 7 or 8 of them not working! Correct me if im wrong!! I may get round to getting the solder iron out and try changing some LEDs, but will give the 1.5V cell a go first!! Link to comment Share on other sites More sharing options...
niclights Posted February 3, 2009 Share Posted February 3, 2009 How's the LED failure rate in these lights nowadays?I have 40 of these in an install and I've not seen any LED failure yet in two years. While they are in no way refined and the control side of things is awful, they do still seem to work fine and give the same output.When part or whole strings die I would check it is not just a dry joint. Link to comment Share on other sites More sharing options...
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