Status, October 2026: discontinued. Pioneer DJ's S-DJ50X page marks it as archived in every region, with no price or buy link, and names no direct replacement; its current 5-inch monitor is the VM-50, launched in March 2021. Thomann also lists it as no longer available.
What it is
The S-DJ50X is a 5-inch active reference monitor from Pioneer DJ, sold as a single speaker (Pioneer DJ product page). It belongs to the S-DJX series with the 6-inch S-DJ60X and 8-inch S-DJ80X, and its operating instructions date from 2013. It came in black and in white as the S-DJ50X-W.
It is a bi-amped two-way design with a 13 cm (5") aramid fibre cone woofer and a 2.5 cm (1") soft-dome tweeter, driven by 30 W and 15 W amplifiers. Pioneer DJ quotes a response of 50 Hz to 20 kHz. The MDF cabinet is bass reflex, with grooves in the front port duct, and the amplifier has a chimney-shaped heat sink.
There are three inputs: balanced XLR and 1/4" TRS for a DJ mixer or controller, and unbalanced RCA for computers and mobile devices. Pioneer DJ says not to connect XLR and TRS at once. An HF level trim sets the treble to -2, -1, 0 or +1 dB, and an auto standby mode, which can be switched off, turns the speaker off after about 25 minutes without signal and back on when signal returns.
It runs on 100 to 120 V or 220 to 240 V, measures 197 x 301 x 262 mm and weighs 6.5 kg. The box holds the speaker, a power cord, the operating instructions and a warranty card; audio cables are not included, and a stereo pair means buying two.