Uniden BC20 20-Watt External CB & Scanner Speaker

If you've ever missed a call because your CB's tiny built-in speaker got buried under diesel rumble or highway wind, the Uniden BC20 is the fix. Twenty watts of output and a 4-3/4" driver push voice audio well above cab noise, and the built-in noise filter trims the hiss so what you hear is the other driver, not static. The 10 ft cord with a right-angle 3.5mm plug reaches from a dash-mounted radio to wherever the speaker sits best, and the bracket and knobs are in the box. It's the right choice for semi cabs, heavy equipment, lifted rigs with the windows down, or any base station where you want a scanner you can actually hear across the room.

The BC20 is the big brother to Uniden's compact BC7 — same 3.5mm plug, same bracket-style install, but nearly three times the power and a larger 4-3/4" cone. That extra headroom matters in loud environments: a 7-watt speaker is plenty for a quiet pickup, but a Peterbilt at highway speed, a skid steer, or a Jeep with the top off will swallow it. Twenty watts gives you volume to spare without the distortion you get from cranking a small speaker past its limits.

The noise filter is the other reason to pick this one over a generic 20-watt box. It rolls off the frequencies that carry static and ignition whine while leaving the 500 Hz–5 kHz voice band intact, so transmissions come through cleaner, not just louder. It plugs straight into the external speaker jack on Uniden's full lineup — Bearcat 880, 880 AM/FM, Bearcat 980 SSB, BearTracker 885, CMX760, PC68LTX, PC78LTX, PRO505XL, PRO510XL and PRO520XL — as well as Uniden scanners and any other brand of CB or scanner with a standard 3.5mm external speaker output.

Features include:

• 20 watts maximum output
• 4-3/4" speaker cone
• Built-in noise filter (noise blanker)
• 500 Hz–5 kHz frequency response
• 10 ft cord with right-angle (elbow) 3.5mm plug
• Mounting bracket and knobs included
• Rugged housing for vehicle or base-station use