ACDC - Evolution 1068 with mains dimmable driver

Downlight with external driver

Fitting: ACDC Evolution 1068 Driver: Havard CoolLED CL700P-240-HV-C

Main Image

Test Date: 01/06/2015

Dimming Performance

RMT Minimum brightness from off: <1% Minimum brightness from max: <1% RAK4-T Minimum brightness from off: 2% Minimum brightness from max: 2%

Smoothness of Dimming

This lamp has no flicker when stationary at any output. Some small "steps" or "shimmer" are visible while the lamp is fading between levels, this is more noticeable when used with a RMT500 as opposed to the RAK4-T. The dimming profile is relatively linear and even although the dimming is to some extent grouped in the top 1/3 of the dimmer output range.

Audible Noise

No audible noise when used with any dimmer.


This lamp and driver combination should not be used with leading edge dimmers. While it performs well enough in most of the output range between around 60-80% of maximum output the lamp flickers violently.

Rating for module compatibility

Dimmer Ratings
Dimmer Rating Tested Units Probable Max Units
RMT-500 Good 1 20
RML-500 Not Recommended
RAK4-T Good 1 25
WMT-400 Not Tested - -


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