Bowens BWL-0335/2 operating instructions Quadx Flash Head, RingLite Function Overview

QUADX Flash Head QUADX

The fan-cooled QUADX flash head is capable of handling up to 3000Ws and is fitted with 650W modelling lamp.

The user changeable flash tube features a three-electrode design to deliver the fastest possible flash duration. A UV-balanced Pyrex dome ensures colour integrity and security. When combined with the full line of Bowens S- type reflectors and accessories this system will give you unmatched lighting versatility and unlimited creative capabilities.

To prolong the life of the flash head Bowens generators incorporate soft-start circuitry which dim the lamps up and down rather than abruptly powering them on and off.

BW7650

RingLite

Function Overview

Your QUADX 3000 is a versatile and powerful photographic generator.

Flash Power

The pack has four head sockets which can deliver a total power of 3000Ws in various ways. At all times, the pack will indicate the available power at any socket. This is scaled such that 3000Ws is represented as 10 on the display. Lower power levels are proportional and adjustable in steps of 0.1 stops. e.g. A value of 9.0 represents half the power, 1500Ws.

The pack is divided into two channels, A & B. These channels are further split across two sockets each, A1/A2 & B1/B2. The energy available from each socket is displayed. Switching off a socket will unit to dump the energy in order to maintain the remaining channel/socket. There is no need to manually accomodate these changes.

With Channel A in use only, the full pack power is available to share between sockets A1 and A2. Therefore a single head in A1 can discharge the full 3000Ws.

With a head switched off in either of the Channel B sockets B1/B2, the pack automatically becomes asymmetric. In this mode, a maximum of 2000Ws is available across channel A and a maximum of 1000Ws across channel B.

As you become familiar with operating the pack, you will notice short pauses in the unit returning to ready during power adjustments. This is because the unit always adjusts the power level to match the displayed value for each socket. Turning a socket off, for example, requires the energy to be dumped, hence the delay. A further reason is that for any given power level, the unit will automatically optimise the internal capacitor useage to minimise the flash duration.

This classic lighting accessory gives a unique full- frontal lighting effect that makes it popular among fashion photographers.

The camera mounts to the center of an opening that is surrounded by two semicircular 1500Ws flash tubes to acheive amazing results. To ensure short, freeze-action flash duration, the flash tubes have three, rather than two, electrodes and each has a seperate cable. The Ringflash can be used with any QUAD generator and its integral mounting bracket adjusts for use with virtually all medium format, and 35mm camera.

BW7660

For refined lighting effects, two quite different reflectors are available.

Ringflash High-Intensity Reflector

This reflector increases the overall size of the light source, intensifying the light output.

BW2310

Ringflash Diffuser

For a softer lighting effect, this opal diffuser can be used with the Ringflash. This will soften the shadows and is perfect for most direct lighting applications.

BW2311

Modelling Power

Modelling On/Off is controlled by a single button. Modelling control to each head can be set to On/Off or Intermittent. (Intermittent extinguishes the lamps when the unit is not ready)

There are three modelling modes, Full, Proportional and automatic 100%.

The Full and Automatic 100% modes also provide a bias control allowing all lamps to be controlled in ratio.

Main Selection Controls

The commonly required adjustments are grouped under the “Main” selection menu. This allows control over the following;-

1.Modelling.

2.Speaker.

3.IR Channel.

4.Bracketing.

16 www.bowens.co.uk www.bowens.co.uk 5