10W Dimmable Warm White MR16 Review

General Information

ID #304
Series Starlight COB Downlight
Manufacturer starlight (other LEDs from starlight)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 95mm
Diameter PAR15 (49mm)
Weight 122g
Warranty 1 Years
Test Date 2014-08-13
Review Notes Recommended by the manufacturer as a replacement for 50W halogens, but is around 40% dimmer when tested. Flicker-free dimming tested in both leading edge and universal dimming circuits. Dimming was smoother and more gradual on the universal dimmer (Clipsal 32E450UDM), however it does not dim as low as on the leading edge (HPM CAT250L). See leading edge dimming profile in gallery. Dimming results for universal dimmer shown below. The only MR16 with a larger heatsink is the Brightgreen DR700. Overall performance was above average when compared to the MR16 LEDs tested to date.
Price $24.20 (AUD) from www.l-e-d.com.au on 12th of August 2014


LED Specifications

Claimed Measured Compared To
Watts 10W 8.9W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $2.19 $1.95 $11.98
Lumens 700 lm 438 lm 765 lm
Efficiency[?] 70 lm/W 49 lm/W 14 lm/W
Lumens/Purchase Price 29 lm/$ 18 lm/$ 170 lm/$
Power Factor[?] N/A 0.9 1
Color [?] Warm White, 3000K Warm White, 2989K Warm White, 3015K
Angle[?] 60° 45° 45°
Dimmable Yes, Leading or Trailing Edge Good Yes, Trailing Edge
CRI (Color Accuracy)[?] 85 81
Life 40,000 hours Not Measured 6,000 hours
Min/Max Voltage N/A / 12V N/A
Min/Max Temperature N/A / N/A N/A
Measured Temperature 61°C @ 25°C ambient
142°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 9% 3%
Flicker Index[?] 0.025 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: 45° (±22.5° 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: 9%, Index: 0.025 (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
10W Dimmable Pure White MR16 $24 (AUD) 8.9W 398lm 70lm/W White, 5046K 56° MR16
10W Dimmable Warm White MR16 $24 (AUD) 8.9W 438lm 70lm/W Warm White, 2989K 45° 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.