ELC Philips #23103-5 (A1/259) MR-16, Quartz Dich. 250w/24v MR-16 cc-6
MOL 44.5mm GX 5.3
Base Down ±90° 3,400°K 1,500
Lux 50hr
ELC/FA Philips #924010520500 (#13631) (A1/259) MR-16,
Dichroic Quartz 250w/24v MR-16
MOL 44.5mm GX 5.3
Base Down ±90°, Faceted
Lens 3,400°K 1,500
Lux 50hr
ELC (FG) Ushio #1000318 MR-16, Dich. Quartz, Specular
Reflector 250w/24v MR-16 cc-6
MOL 44.5mm GX 5.3 Avbl w.
Lens - Add (FG), Work Dist. 31.7mm,
Base down to horizontal 3,400°K 1,500
Lux 50hr
Note: The first Philips lamp could be the same lamp as the second in later described in a catalogue if the frst is not discontinued or re-described possibly with a new part number. Lamps are like the military for part designation... if the same lamp but different packaging box... that requires a new part number. Sometimes the American lamp lags behind the Euro lamp listing of - thus the
UPC code. Can take months before an American part number or even listing of it comes out. Both Euro and American lamp company websites - they are different, can be useful for lamp research on lamps in researching both. I
track lamps but only started noting when I listed the lamp existing a few years ago & MR-16 listings are not up to date. Lamps I list are known of to have existed, but would have to check if they still do as per the ELC/FA you found which appairently is still being made.
UPC code is all I have on the second lamp you found.
In the long run, you will probably upgrade these fixtures in a few years to something else. Balance that with your wish for "turning them up to 11".
-Yes
voltage / wattage match up.
-Note the lamp
base down to horizontal measurement... that's a limitation that the ZB-ELC probably also has.
-That sounds like a great lamp as with the Ushio! "Premium brands" are also more reliable usually.
Unfortunately these
Lux measurements seem bright but are metric measurements not
Lumen measurements in comparing to other lamps.
See below in I don't have a direct converion from Lumens to
Lux. Could be or not, both are more dim than the Osram:
ELC/HLX (?Disc.) Osram/Sylv #54163 (#64653HLX) Lif A1/259) MR-16, Dich. Quartz/Xenon 250w/24v MR-16 (T-3.1/2) c-8
MOL 44.5mm GY 5.3 White Coated Reflect. Any Burn Pos. 35mm Work Dist 880 Lum 50hr
Note the working distance is different. And if the Osram lamp is still made. Otherwise there should be 850 to 800 Lum ELC lamps still on the market.
-The beam spread. (Working Distance in this case - probably when the beam crosses over itself instead of spreading out.) Within
ANSI ELC lamps should be within a degree or two the same in tolerences for specication. Should be similar as what is offered by ADJ as a general thing. This might or might be a factor in actual output
+ possibly damage your fixture. ADJ does not give "Working Distance" specification for their lamp. But amoungst ELC lamps I
track, I note a working distance when offered varied from 35mm to 31.7mm when listed. That is huge within a moving light! Unless you can
bench focus the lamp within the
fixture... that could be a problem.
Overall, if your working distance is different, you will have some stray light being blocked by baffles hopefully, if not screwing with your
gobo focus. This if not also heating up components possibly in a bad way. Were this not a
reflector lamp, it would be an easy upgrade to a different lamp.
-Filament size Note above Philips and Ushio lamps have a cc-6 lamp, the Osram has a c-8. This will have a slight
effect on optics and more so
effect on gobos. 2mm In length and slightly different
layout of the
filament can be especially a problem with gobos'. On the other
hand what is the spec's of the ZB-ELC? A smaller
filament might have better output and
gobo clarity. If similar
filament to the ZB-ELC, should be fine. On the other
hand, could burn
thru your dichroics faster also - more heat smaller
point source. (Notes below and looking at a ZB-ELC perhaps you can measure / define it yourself.)
-Lensed lamp. I note a few lamps with lenses. I doubt the ZB-ELC lamp has a
lens, but if it does you need a lamp with a
lens. Otherwise if not, your non-lensed lamp won't fit or will
throw off your working distance optics further. There is a few lensed options.
-Cooling/lenses/dichroics. If your
cyc lights are lamped with 1Kw lamps... you know Rx 27
gel won't last a show. Rx-26 perhaps a few? If you have 500w lamps in the
Cyc's, it's a different ball game in a smaller scale way. If you have 300w lamps....
These fixtures were designed for the ZB-ELC. If you put a high output lamp into them, might they start burning
thru the dichroics? Very possible. Could they overheat the
fixture? Possibly - got
fog goo going in the air, when is the last time the filters and fans were cleaned, and how many times a year are they? That above the question of a higher luminous output lamp causing more heat in general. Or different working distance of the lamp.
I would go for at least a lamp to try in keeping in mind the working distance might be different - might be the same output and perhaps the ZB-ELC is already a high output. If possible, I would also study the stray light on an opened up
fixture with the ZB-ELC lamp in use and compare it to this test lamp so as to compare the working distance. Would light
meter or compare output in general between "New" both lamps, and or give it a shot in testing. See if you can figure out the math below in
Lux to
Lumen conversion - and or someone probably has the math. Even "Backstage Handbook" in first check lists
lux to
foot candles. On this lamp type, I suspect
CBCP (Center Beam
Candlepower) as normal also on
reflector type lamps does not apply given a "working distance" lamp.
UNIT CONVERSIONS
Inches = millimeters / 25.4
Millimeters = inches * 25.4
Feet = meters / 0.3048
Meters = feet * 0.3048
Centigrade = 0.556 * (Fahrenheit - 32)
°C=°K-273.15
°C=5/9 x (°F-32°)
°F=9/5 x °C + 32°
Fahrenheit = 1.8 * (Centigrade + 32)
Pounds = kilograms * 2.205
Kilograms = pounds * 0.454
Degrees = 180 * radians / PI
Radians = PI * degrees /180
LIGHT OUTPUT CALCULATIONS
a dinner candle provides about 12 lumens. A 60-watt Soft White
incandescent lamp provides 840 lumens.
Foot-candles =
candela / distance in feet * distance in feet
Foot-candles =
Lux / 10.764 = lumens/sq.
meter; 1fc=10.764lux
Foot-candles * 10.764 = lumens/sq.
meter =
lux
Lumens/sq. ft. * 1 = foot-candles; (1fc=1
lumen/ft²)
Lumens/sq. ft. * 10.764 = lumens/sq.
meter
Lumens * 0.07958 =
spherical candle
power
Lumens = Mean
Spherical Candlepower x 12.57
Luminous
Intensity (cd) = I = Luminous flux in solid angle ÷ solid angle℧(sr)
Lux * 0.0929 = foot-candles
Lux =
candela / distance in meters * distance in meters
Lambert * 0.3183 = candles/sq. cm
Lambert * 295.720 = candles sq. ft.
Lambert * 1 = lumens/sq. cm
Illuminance (lx) = E = Luminous flux falling on area (lm) ÷ Illuminated area (m²)
Illuminance (lx) = E = Luminous
intensity (cd) ÷ [distance in meters (m)]²
Luminance (cd/m²) = L = Luminous intensidy (cd) ÷ viewed luminous area (M²)
Luminous efficacy (lm/w) = h = Generated luminous flux (lm) ÷ Electrical
power consumed (w)
Efficacy=F(lu)/P(w)
F=Luminous Flux
P=Electrical
Power (wattage), in watts
LIGHT BEAM CALCULATIONS:
Beam diameter = distance * (2 * tan (
beam angle / 2))
Throw distance = Square root [(horizontal dist. * horizontal dist.) + (vertical dist. * vertical dist.)]
Inverse Square Law: E(fc)=I(cd)/D²(ft)² E(fc)=F(lm/A(ft)²
A=Area in square feet
D=Distance in feet
E=Illumination in footcandles
F=Luminous Flux in Lumens
I=Luminous
intensity (Candlepowe) in candles
Mired Shift Value = 1,000,000/d - 1,000,000/a
d=Desired
Color Temperature (no units)
a=Actual
Color Temperature(no units)
Filament notes. (Sorry was personal notes at the time so I did not write down the sources for where I got them. Given they were for the most part in published industry catalogues plagerism should not be a problem. Much less it's known data shared by all sources as standard.)
2c-(x) / 2cc-(x) = (2cc-6 / 2cc-8) A Number Preceding the coil type indicates there are more than one
filament in the lamp, on separate contacts. Note, Middle Pin is usually the common or
neutral.
c-6 / cc-6 =
Filament Coil with Axis of Coil Perpendicular to Pins (Normal Side Supported)Filmt.
c-8 / cc-8 =
Filament Coil with Axis of Coil Parallel to Pins (On End Vertical Top&Bottom Supported)