Interfit Stellar Xtreme Flash Head

Introduction

This document provides instructions for using the Interfit Stellar Xtreme flash head, particularly with the improved performance MKII battery. The MKII battery can also be used as a replacement battery for original Xtreme heads.

The Stellar Xtreme series includes models such as the 150 and 300 watt versions, offering versatile lighting solutions for photography.

Attaching the Stand Mount

To attach the stand mount:

1. Unpack the stand mount and remove the locking nut.
2. Undo the mount lock and slide the mount onto the stand. Ensure the tilt handle is positioned towards the rear of the unit.
3. Initially position the stand mount in the middle of the unit and tighten the mount lock until it is held firmly in place.
4. Replace the locking nut and tighten it until firmly fixed, being careful not to over-tighten.

Tilt Handle Operation: Twisting the handle clockwise locks the tilt, while twisting anti-clockwise unlocks it. Use caution when unlocking the tilt handle to prevent damage to the user or the flash head.

Swivel Release: The swivel release mechanism, operated by a thumbscrew, allows the head to move freely on the stand once loosened. This enables easy positioning of the flash head as required.

Fitting an Umbrella to the Head

1. Open the umbrella and pass its rear tube or stem through the designated hole located next to the tilt handle.
2. Turn on the modeling lamp. Adjust the umbrella backwards or forwards until excess light fills the umbrella evenly at the edges.
3. Lock the umbrella into position using the umbrella locking nut.

Tip: In a darkened room, check for even light distribution by observing the ceiling. If excess light is visible at the edges, the umbrella is not correctly positioned. Adjust until all excess light is contained within the umbrella.

Flash Tube Replacement

Stellar units feature easily replaceable plug-in flashtubes.

Procedure:

1. Disconnect the power lead from the flash head and press the TEST button.
2. Allow the head to sit for a minimum of 1 hour to fully discharge the internal capacitors. ⚠️ Caution: Failure to do this may result in a severe electric shock.
3. Remove the reflector and the existing bulb.
4. Step 1: Undo the spring from the outside edge of the flash tube holder.
5. Step 2: (Implied action related to spring release)
6. Step 3: Gently and evenly lift the two glass stems with a slight upward pressure.
7. Step 4: Carefully lift the old flashtube clear.
8. Refitting: Reverse the above steps. Ensure the new spring is correctly seated in its holder before inserting the new flashtube.

Interfit Stellar Xtreme with Improved Performance MKII Battery

The MKII Battery is designed to provide portable power for the Stellar Xtreme flash heads. It features a worldwide charger compatible with 110-240V AC power sources, utilizing a 15V 1000mA charging adapter.

Battery Pack Controls and Indicators:

• A: Rear grab handle.
• B: Ready Light (green) - indicates the unit is ready for the next shot.
• C: Charge Light (red) - indicates the unit is currently charging.
• D: Sound On/Off switch (controls the beep indicator).
• E: Modeling Lamp On/Off switch (operates in AC mode only).
• F: Controls for Flash and Modeling lamp output levels.
• G: Built-in Infrared Slave Cell On/Off switch.
• H: Test Fire button - used to reduce output after turning the power down.
• I: Main AC Power Input socket.
• J: Main Power Function switch (controls AC and DC inputs).
• K: Small Jack Sync Cable Input.
• L: Connection port for the DC battery pack input to the flash head.
• M: Built-in Infrared Slave Cell indicator (does not operate when button G is activated).

Charger and Battery Operation:

• Charger Connection: Plug the provided charger into a mains power outlet and connect the cable to socket N on the battery pack.
• O: Indicator for charge status and remaining battery power.
• P: Output port for connecting to Stellar Xtreme 150/300 watt heads.
• Q: DC Battery Pack Power Switch. This switch must be in the OFF position to charge the battery pack.
• R: Charger LED: A red light indicates charging is in progress; a green light indicates the battery is fully charged. The charger must be plugged into socket N for charging to occur.

Charging for the First Time

To ensure optimal battery lifespan, it is recommended to pre-condition the batteries by charging them for 8 hours during the initial charge. The battery is shipped in a semi-discharged state. After the first full charge, it can be topped up as needed.

Important Charging Note: When charging the battery, the power switch (Q) on the battery pack must be turned to the OFF position. A fully charged battery is indicated by a solid green light on the charging unit's LED. A blinking red LED indicates the battery is currently charged and may require topping up until the charger indicates green.

Important Warnings and Usage Notes

• ⚠️ Warning: Do not connect the flash head to mains power while the battery pack is connected to the DC input cable (L). Failure to adhere to this warning will damage the head and battery pack, and such damage is not covered under warranty.
• ⚠️ Warning: Ensure that both the head power switch (J) and the battery pack power switch (Q) are in the OFF position before connecting the DC battery pack. Failure to do so will damage the battery pack, and such damage is not covered under warranty.
• Battery Maintenance: To maximize the battery's lifespan, avoid fully discharging it. Repeated deep discharges can impair its life cycle and shorten its overall capabilities. Failure to observe this recommendation is not covered by the warranty.
• Battery Performance: The battery pack is estimated to provide approximately 200 flashes on a Stellar Xtreme 150/300 watt head when operated at maximum power. Performance may be higher when used at lower power settings.
• Modeling Lamp: The modeling lamp cannot be activated when the flash head is powered by the battery pack. Additionally, the flash output is reduced to ensure optimal power management.
• Power Saving: To conserve battery power and extend usage time, turn off both the battery pack and the flash head when not actively taking photographs. This is because the internal fan and circuitry consume power during operation.

Operating the Unit

General Operation and Safety

• ⚠️ Weather Resistance: The Stellar Xtreme flash head is not weatherproofed. Avoid using it in damp conditions, including rain, sleet, snow, or near water.
• Environment: While the Stellar Xtreme is safe for use in most environments when powered by the battery pack, it is not suitable for use in damp conditions.
• AC Power Operation: When powered by mains AC, the Stellar Xtreme offers capabilities comparable to other AC-powered units. It can be integrated with other Interfit flash heads in a studio environment via its built-in infrared slave cell.
• Triggering the Head: The included PC sync cable can be used to trigger the flash head when connected to a camera's PC sync port. For cameras that do not have a PC sync connection, use a hotshoe adapter or a Radio/Infrared transmitter set, such as the Interfit INT412 or INT411 systems.
• Power Level Check: When adjusting the power levels of the Stellar Xtreme, it is advisable to press the "TEST" button. This helps confirm that the correct power level has been set for the subsequent shot.

Enjoy being creative with the Stellar Xtreme.

Connecting the Battery to the Head

Important: It is crucial to follow these guidelines precisely when connecting the battery pack and flash head together. Failure to do so may cause a short circuit, which is not covered by the warranty.

1. Ensure the flash head is turned to the OFF position.
2. Ensure the battery pack power switch is set to the OFF position (the letter 'O' should be closest to the battery pack body). The image above illustrates the ON position for reference.
3. Connect the DC link power cable to the battery pack. Observe the correct connection points, identified by the "Red & Black circles" in the accompanying images. Push the connector in and twist the locking ring to secure it.
4. Connect the DC Link power cable to the flash head, again observing the correct location into the Input junction. Push the connector in and twist the locking ring to secure it.
5. Verify that all AC power cables have been removed from both the flash head and the battery pack.
6. You may now safely turn ON the battery pack, followed by the flash head.