QTX QTFX-B4 Dual Wheel Bubble Machine - 4 Fans

The QTX QTFX-B4 is a dual-wheel bubble machine built around two 10-wand rotating wheels spinning at 60rpm, paired with four output fans that disperse bubbles across a wide area. The 2.5-litre fluid tank sits beneath the wheels and feeds bubble solution through a recirculating system that keeps the wands saturated during operation.

Designed for large events, function halls, DJ sets and stage productions where rapid bubble output is needed, the QTFX-B4 combines wheel rotation speed with forced-air distribution to fill a space faster than single-fan machines. The four fans sit in pairs on the front panel, two on each side of the wheel assembly, creating a horizontal spread pattern that pushes bubbles outward rather than letting them drift vertically. The wheeled base allows the machine to be repositioned during setup without needing to be lifted.

The metal housing measures 380 x 450 x 470mm and weighs 10.5kg when empty, giving the machine a stable footprint on stage floors and dance floors without risking tip-over during operation. A rear-mounted drain tap allows the 2.5-litre tank to be emptied between uses without needing to invert the machine. The included remote control provides wireless on/off operation from across a venue, and the 230V IEC mains input accepts a standard UK kettle-style power cable.

Product Manual

What bubble fluid does it use?

The QTFX-B4 requires water-based bubble fluid formulated for professional machines. Standard soap solutions will not produce the same bubble density or longevity. QTX and other brands produce compatible fluids in 1L and 5L bottles.

How long does a full tank run?

Runtime depends on the fluid viscosity and ambient temperature, but a full 2.5L tank typically runs for 45-90 minutes of continuous operation. The drain tap at the rear allows unused fluid to be recovered and stored between events.

Can it be used outdoors?

The QTFX-B4 runs on 230V mains power and is not rated for outdoor use in wet conditions. It can be used in covered outdoor areas where rain and moisture are not present, but should not be exposed to weather.

What's the coverage area?

With four output fans and two 60rpm wheels, the QTFX-B4 covers a horizontal spread of approximately 5-8 metres depending on airflow in the room. For larger venues, multiple machines positioned at intervals provide more consistent coverage than relying on a single unit.