November 2008 •
Lighting&Sound
America
TECHNICAL FOCUS: PRODUCT IN DEPTH
We try to cover as broad a range of
products as we can in these reviews.
We’ve discussed a number of the largest
1,200W units from various manufacturers
over the years, but this month we are
going to the opposite end of the
spectrum and looking at one of the
smallest—the Martin smartMAC.
Martin is well-known for its highly
successful range of MAC-branded
automated luminaires, and the
smartMAC joins a product line that’s
broad-reaching. Introduced at the end of
2007, Martin appears to be aiming the
smartMAC primarily at the bar, lounge,
and restaurant market, although its size
may make it attractive to other users.
Being a small unit with a 150W lamp, the
feature set is obviously
more limited than its
larger brothers and
sisters, and it must be
judged with that
consideration in the
back of one’s mind.
Having said all that, how
does it measure up?
Whether discussing
large or small units,
these reviews always
follow the same format. I
examine the single
sample of the product that’s been
supplied to me by the manufacturer and
measure every parameter on that unit as
accurately as I can. These
measurements are provided to you
without embellishment, so that you have
the information to draw your own
conclusions. As always, let’s start at the
lamp and work forward through the
smartMAC, ending up at the output lens.
The smartMAC (Fig.1) is fitted with
selectable voltage power supplies, and
will run on the standard worldwide
voltages of 100-120V or 200-240V
50/60Hz. For these tests, it was set on
the 120V 60Hz setting, supplied with a
nominal 118V 60Hz and consumed 2.13A
for 209W of power at a 0.83 power
factor.
The lamp
The lamp is the newest and smallest in
the MSD range from Philips—the MSD
150/2 (Fig. 2). The MSD lamps are often
seen as long-life versions of MSR lamps
and, although similar to MSR lamps, use
a slightly different chemistry to get their
3,000-hour rated life. The “/2”
designation usually indicates a higher-
color-temperature lamp, with a
corresponding reduction in CRI. That is
the case here; the MSD 150/2 is rated at
a high 8,500K with a CRI of 65, which
matched my measurement of 8,400K
very well. A CRI of 65 is fairly low, but
likely will be fine for the intended use.
The high color temperature makes the
output appear fairly blue, but also gives
the perception of a brighter unit. The
MSD250/2, from the same range of
lamps, is in common use by many
manufacturers and shares the same
traits. If you need even longer lamp life
and don’t mind giving up some output,
then you can use the 9,000-hour CDM
150 lamp instead.
The MSD 150/2 is a conventional,
single-ended, jacketed discharge lamp
with an axial arc gap and uses a
standard two-pin lamp base. Changing
the lamp is simple and familiar, and is
accessed by removing two screws at the
rear of the unit (Fig. 3). Note that you’ll
need a set of Torx drivers to work on this
unit; although the manual says these are
thumbscrews, they are, in fact, like many
fasteners on the smartMAC, Torx head
machine screws. Although many of the
screws on the unit are captive, these
aren’t—so take care not to drop them.
The rear plate, complete with the lamp-
adjustment mechanism and the
lampholder, is removed as a single
assembly. The lamp is then easily
exchanged and the assembly replaced
into the unit. Lamp adjustment includes
the usual three screws for setting the
lamp alignment. Next in the optical path
is an elliptical reflector, followed by what
looks like a combination heat shield and
diffuser (Fig. 4). It’s worth mentioning at
The Martin smartMAC
By: Mike Wood
Fig.1: Unit as tested.
Fig.2: Lamp
Fig.3: Lamp change.
Fig.4: Heat shield diffuser.
Copyright
Lighting&Sound
America November 2008 www.lightingandsoundamerica.com/LSA.html
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