F electrolytic capacitors (Elcos) rated for high-voltage audio smoothing.
: 1 x 15" Low Frequency (LF) woofer with a 50mm voice coil and 1 x 1.7" High Frequency (HF) titanium compression driver.
The U15a is a housed in a durable, anti-shock polypropylene cabinet. Its reputation is built on power and clarity, pushing 400W (RMS) —split between 300W for the bass and 100W for the treble. Inside the Manual
Lay the speaker flat on its back on a stable, padded surface. Beta 3 U15a Service Manual
The rear electronics plate houses both the preamp interface and the power supply rail controls.
Stay safe and keep those machines running
: 8 x M8 rigging points for flying, and a 35mm "SMART" pole mount system for stand use. Dimensions : 485 x 460 x 700 mm (roughly 19" x 18" x 27.6"). Weight : Net weight of 30.5 kg (67.2 lbs). Its reputation is built on power and clarity,
The Beta Three U15a is a 15-inch, two-way, full-range active plastic speaker designed for a broad range of portable and fixed sound reinforcement applications. Known for its high output and durable build, the U15a is a go-to choice for sound professionals who need a versatile and robust solution. The speaker's core components include a 15" high-power low-frequency transducer and a 1.7" diaphragm compression driver.
Utilizes heavy aluminum heatsinks coupled with thermal paste to dissipate heat through the backplate. 3. Common Troubleshooting & Repair Procedures
Identification of components (transistors, capacitors, resistors) on the amplifier PCB. 4. Exploded Views and Mechanical Parts List Stay safe and keep those machines running :
The is a staple 15-inch two-way, full-range active plastic PA loudspeaker used globally for live sound reinforcement, front-of-house (FOH) systems, and robust stage monitoring . Manufactured by Beta Three Professional Audio (Elder Audio) based in Dongguan, China, this heavy-duty workhorse delivers a rated power output of 400W RMS via an onboard Class H bi-amplified module.
The U15a uses a convection cooling system. Ensure the heat sink on the back plate is clean and free of dust for proper heat dissipation. C. Cabinet Maintenance
with soldering or electronic repair?