Master LED 10W MR16 Review

General Information

ID #58
Series MASTER LEDspot
Manufacturer Philips (other LEDs from Philips)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 45mm
Diameter PAR16 (50mm)
Weight 40g
Warranty 5 Years
Test Date 2013-05-01
Review Notes Dimming measurements conducted using wire wound transformer and universal dimmer. Flickering observed using leading edge dimmer. See Philips' list of recommended dimmers. Also contains a small (audible) cooling fan & auto power reduction. A very expensive LED light giving the low efficiency. This model has been replaced by a new 7W Master model.
Price $59 (AUD) on 25th of March 2013


LED Specifications

Claimed Measured Compared To
Watts 10W 11.4W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $2.19 $2.50 $11.98
Lumens 405 lm 394 lm 765 lm
Efficiency[?] 41 lm/W 35 lm/W 14 lm/W
Lumens/Purchase Price 7 lm/$ 7 lm/$ 170 lm/$
Power Factor[?] N/A 0.98 1
Color [?] Warm White, 3000K Warm White, 3012K Warm White, 3015K
Angle[?] 60° 59° 45°
Dimmable Yes, Leading Edge Below average Yes, Trailing Edge
CRI (Color Accuracy)[?] 80 80
Life 30,000 hours Not Measured 6,000 hours
Min/Max Voltage N/A / 12V N/A
Min/Max Temperature -20°C / 45°C N/A
Measured Temperature 67°C @ 25°C ambient
153°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 3% 3%
Flicker Index[?] 0.004 0.008


Link to manufacturer specifications at time of testing


Dimming measurements

Graph notes: Dimming performance can be highly dependant on the type of dimmer, the number of lights in the circuit and other factors. Results in your house might vary. Mouse over the graph for more details. Position 10 = Not dimmed. Position 1 = Fully dimmed.



Distribution Graph

Angle: 59° (±29.5° from bottom), Maximum lux:

Graph notes: Shows the intensity of the light when viewed from different angles. Normal omni-directional globes have a fairly constant output all the way around (excepting directly above). Downlights have a narrow range at the bottom in which the light is emmited, this determines their angle.


Spectrum Graph

Representation of color spectrum

Graph notes: Shows the breakdown of the LED light into its component colors. With short wavelength ultraviolet on the left and long wavelength infrared on the right. The green line represents the relative absolute strength of the light at each frequency, while the red line represents what the typical human eye would see. The human eye is most sensitive to green light, but much less sensitive to purples and deep reds.


Flicker Graph

Graph of measured flicker

Percent: 3%, Index: 0.004 (lower is better in both cases)

Graph notes: Shows variation in light output over 1/10th of a second, with relative light output on the Y axis and time on the X Axis. Measured with a photodiode connected to an Oscilloscope. Ideally the yellow line should be flat. Low frequency high amplitude waveforms mean there is a possibility of noticeable flicker, but sensitivity to flicker varies between people. [More details about LED flicker]


LEDs in this Series

Name Price Watts Lumens Efficiency Color Angle Fitting
Master LED 10W MR16 $59 (AUD) 11.4W 394lm 40lm/W Warm White, 3012K 59° MR16
Master LED 5.5W MR16 $15 (AUD) 6W 410lm 73lm/W Warm White, 3143K 66° MR16
Master LED 7W MR16 $19 (AUD) 8.1W 387lm 54lm/W Warm White, 3112K 59° MR16


Disclaimer: While every effort has been made to ensure the accuracy of these results, each measurement carries an inherent degree of uncertainty and error. Safety and EMC compliance of products to regional or international standards have not been verified unless noted as an ENERGY STAR® LED Lighting Facts, or SSL Quality Scheme certified product. Retailers and importers selling unmarked or unapproved electrical goods can be fined or imprisoned. Mains supplied downlights require installation by a licensed electrician.