Broncolor Flash Bag 1.1 for Siros L Monolight

The Broncolor Flash Bag 1.1 is the official replacement flash tube engineered for Broncolor's Siros L 400 and Siros L 800 monolights. Rated for 400-800 watt-seconds of output, this tube maintains the precise color consistency and flash duration characteristics that Broncolor systems are known for. When a flash tube reaches the end of its lifespan — exhibiting reduced output, color shift, or failure to fire — this replacement restores the monolight to its original performance specifications without requiring factory service.

The user-replaceable design is a practical advantage for working photographers. Rather than shipping a monolight out for repair and losing access to it during a busy production schedule, you can carry a spare tube and perform the swap on location or in the studio in minutes. Weighing just 0.2 lbs and measuring 7.24 x 3.54 x 2.48 inches, it is compact enough to keep in a gear bag as insurance against unexpected tube failure. For Siros L owners who depend on their lighting for professional work, stocking a replacement tube is a straightforward way to protect against costly downtime.