The Bowens QuadX Flash System offers precision studio flash and represents
great value for today's digital photographer. Using the latest technology, Bowens
have developed a new power pack flash system that they say will act as a benchmark
for other flash manufacturers for years to come.
The QuadX Power Pack provides power adjustments in accurate 1/10-stop steps,
which is compatible with most of today's flash meters. With maximum power of
3000w/s and minimum power of 31w/s, it has a range of nearly 7 stops. The overall
power of the pack can be divided into two independent channels, one having a
maximum power of 2000w/s, the other 1000w/s. Each channel controls two head
outlets in 1/10-stop steps. Power levels are clearly visible in large LED displays.
In addition to individual channel-level controls, there is an overall power
control which will raise and lower the total output of the generator, also in
The QuadX uses precise capacitor switching that constantly monitors power levels
and switch out unused capacitors. This design delivers much greater colour consistency
over the entire power range of the pack. It also helps the QuadX achieve a faster
The backlit LCD screen on the pack's control panel is the heart of the information
centre that gives the photographer complete control and understanding of the
QuadX's performance, displaying as much or as little information as the photographer
The display shows the output for each head in joules or watt seconds and its
predicted flash duration. It also indicates which of the many modelling lamp
modes has been selected. Other menus include a resettable flash counter, a trigger
delay for special effects, adjustable audible signals, display brightness and
At 100%, modelling lamps will be at full power regardless of flash power selected.
In proportional mode, the lamps will directly correspond to the flash power
selected. An Auto-100% mode sets the modelling lamp of the head with the highest
flash power to 100% brightness, while subsequent heads are set in ratio to that
head. In the fourth mode, the system automatically detects and displays the
individual lamp brightness as a percentage of full lamp power. The photographer
can then increase or decrease the lamp brightness until a comfortable working
brightness is achieved, while lamps remain proportional to the power selected.
To indicate recycling, the modelling lamps can be set to extinguish after the
flash has fired. To prolong the life of the lamps, the QuadX features soft-start
switching, which brings lamps up gradually rather than abruptly.
With a full-bracketing function, the photographer can set the bracketing interval
from 1/10- to 9/10-stop. Once selections have been made, a display will indicate
the bracketing sequence, showing what the actual bracketing power levels will
be and the order of the sequence.
The initial QuadX flash head is a fan-cooled unit featuring a single, clear
flash tube mounted beneath a UV-balanced Pyrex dome. The tube will handle up
to 3000w/s of power and has a three-electrode design that delivers the fastest
possible flash duration. It will also handle modelling lamps up to 300w.
End April 2003
Designed and manufactured by Bowens International
355 Old Road, Clacton-on-Sea, Essex, CO15 3RH
+44(0) 1255 422807, fax: +44(0) 1255 436342
Web site: www.bowensinternational.com