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Mike Stoane Lighting TTX2 Series

Issue 86 August / September 2015

David Morgan reviews the TTX2 Series - Mike Stoane Lighting’s latest range of spotlights developed to optimise LED light sources without any halogen options and designed to incorporate both reflector and TIR lens optics.

If racing go karts through the factory is a leading indicator of creative activity, then Mike Stoane Lighting scores highly, as this is one of a variety of extra-curricular activities that the company undertakes after normal working hours.  

Ownership of the company, started by Mike Stoane in 1995, has now passed onto the management team headed by Dave Hollingsbee with Alistair Kay as Head of Development, but the company continues to produce the high end architectural lighting equipment for which it has become famous in the lighting design community.

The minimalist luminaire product range is mainly based on turned and machined elements. These metal work components are manufactured either in-house or with sub-contractors located near to the company’s HQ in Scotland. This design and manufacturing approach results in an austere, stripped-down aesthetic that many architects and lighting designers appreciate.

Track spotlights have been an important part of the Mike Stoane range since the late 1990’s, with the Museum of Scotland being the first of many gallery and museum projects to be lit with its equipment.  

The latest range of spotlights, the TTX2 Series, has just been launched and is a continuation of the same theme of construction and minimalist appearance as the previous Type X range, but has been developed to optimise LED light sources without any halogen options.

Mike Stoane Lighting has worked closely with a small number of component suppliers including Xicato, Eldoled and Eutrac to ensure that the new range offers the best possible features and capability.

Eutrac has finally introduced a DALI version of its LV low profile track system. The track adapter for this is very low profile, giving a small projection from the ceiling. This track system has four conductors, which allows the Xicato XIM module to be driven from a remote 48V power supply with a separate dimming signal / data channel.

Mike Stoane’s existing line voltage track adapter is used to power the Xicato XLM modules, which are driven by an Eldoled driver housed in a track mounted gear enclosure.

Mike Stoane Lighting was an early adopter of the Xicato remote phosphor LED modules with the new range designed around the latest XTM and XIM versions. They make a good fit as they both target the same niche market of lighting designers who place a high value on colour consistency and colour stability. I reviewed the Xicato XIM module in a previous article and was impressed with the integrated driver complete with dimming interfaces for DALI and 1–10V.

The XTM module operates with a remote constant current driver and is now available with a 9mm light emitting surface as well as the standard 19mm diameter. The 9mm diameter LES allows much tighter beam angles to be achieved than with previous Xicato modules and Xicato has developed its own range of reflectors including an 11º version incorporating louvres.  

The TTX2 range is designed to incorporate both reflector and TIR lens optics. The ‘fried egg’ effect often seen with reflectors and lenses combined with COB LEDs of a tight central beam, surrounded by a wide aura is minimised with the Xicato reflector.  The colour temperature variation ring effect is also reduced with the use of good quality TIR lens optics.

The wide range of anti-glare and beam control accessories that Mike Stoane has developed for previous spotlight ranges including honeycomb louvres and barn doors can all be fitted to the new range. Up to two accessories can be added to each spotlight and are now inserted from the front with a retaining spring after feedback from users who requested a faster way to add and remove accessories.

Successful dimming of LED light engines can still be problematic, but Mike Stoane Lighting has worked closely with Xicato and Eldoled to ensure that the state-of-the-art dimming performance is standard for the new range. 

The Xicato XIM modules dim down to 1% for 1-10V and 0.1% for DALI versions using a combination of PWM and CCR dimming and incorporate the closest thing to flicker-free dimming so that any stroboscopic and banding effects with television and smart phone cameras are minimised.

Eldoled drivers are used to run the Xicato XTM modules and with a custom interface this enables manual dimming on the track box as well as remote DALI control – the best of both worlds that up to now, was not available with LED spotlights.

Future developments for the Xiacto XIM include Bluetooth control. In retail, this could allow information to be transmitted to customers’ smartphones via Bluetooth, about particular products by highlighting them with a suitably equipped spotlight or transmitting information about particular exhibits in galleries and museums.

TTX2 Series is a well-engineered and versatile track spotlight range that incorporates many of the most sophisticated components available. I am sure that it will attract the attention of lighting designers and be specified for use in many museum and gallery projects over the next few years.

David Morgan runs David Morgan Associates, a London-based international design consultancy specialising in luminaire design and development and is also MD of Radiant Architectural Lighting.


© David Morgan Associates 2015


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