Beta 3 U15a Service Manual Jun 2026

Stand the cabinet upright or lay it face down on a soft, padded surface.

| Ref | Description | Part Number (Example) | Qty | |-----|-------------|----------------------|-----| | 1 | Front grille (steel, black) | B3-U15A-01 | 1 | | 2 | 15" woofer (8Ω, 400W) | B3-WF15-8 | 1 | | 3 | Compression driver (1.4") | B3-CD14-8 | 1 | | 4 | Horn (90°x60°) | B3-HN9060 | 1 | | 5 | Amplifier module assembly | B3-AMP-U15A | 1 | | 6 | Rear panel (aluminum) | B3-RP-U15A | 1 | | 7 | Handle (molded, side) | B3-HDL-02 | 2 | | 8 | Rubber foot | B3-FT-40 | 4 | Beta 3 U15a Service Manual

The U15a is designed for both portable and installed professional audio applications. Beta Three Professional Audio Transducers Stand the cabinet upright or lay it face

: Ensure the voltage selector is correctly set to your local standard ( 110V/220V ) before powering on to prevent blowing the internal protection fuse. Allows for minor frequency response adjustments (± 10dB

Allows for minor frequency response adjustments (± 10dB range).

Before cracking open the injection-molded polypropylene cabinet, a bench technician must verify the speaker's factory ratings. Deviations from these baselines signal immediate component failures. Specifications & Value

Finding the most accurate and official documentation is key. The most reliable source is the manufacturer's website. Beta 3's professional audio website has dedicated product pages that contain download links for official documentation.