Best External Speakers for Police Scanners
That tiny speaker in your scanner does the job—barely. External speakers transform muffled transmissions into crystal-clear audio. Here's how to upgrade your listening experience without overcomplicating things.
Why External Speakers Matter
Built-in scanner speakers are an afterthought. They're small, positioned awkwardly, and optimized for cost rather than clarity. An external speaker designed for communications equipment makes a noticeable difference:
- Voice-optimized frequency response: Tuned for speech clarity, not music
- Larger driver size: More surface area means better sound reproduction
- Better positioning: Place the speaker at ear level, angled toward you
- Higher volume capability: Fill a room without distortion
Recommended External Speakers
Best Overall: Uniden BC20
$20–$30
The standard for scanner external speakers. Uniden designed this specifically for their scanners, but it works with any brand. Voice-optimized response, mounting bracket included, and proven reliability over decades of production.
Features:
- 3W power handling
- 8 ohm impedance (universal compatibility)
- Mounting bracket included
- 3.5mm plug (fits most scanners)
- 5-foot cord length
Budget Option: Uniden BC15
$15–$25
The BC20's smaller sibling. Adequate for close-range listening at a desk. Less bass response than the BC20, but perfectly serviceable for most users. Good choice if you're not sure external speakers are worth the investment.
Features:
- 2W power handling
- Compact size for desktop use
- Budget-friendly entry point
Premium Choice: MFJ-281 ClearTone
$25–$35
From the ham radio equipment specialists. MFJ built this for communications clarity—perfect for scanner use. The angled design directs sound toward the listener. Popular with amateur radio operators who need to copy weak signals.
Features:
- 3" speaker driver
- Angled cabinet design
- Communications-grade audio clarity
- Heavy base prevents tipping
Amplified Option: SIMOLIO Wired Speaker
$50–$70
Need to hear your scanner from across the room? This amplified speaker with voice enhancement technology makes transmissions clearer. Long cable lets you position the speaker near your listening area while the scanner stays at your desk.
Features:
- Amplified speaker with voice enhancement
- Adjustable tone control (3 levels)
- 5.5m long cable for flexible placement
- Rechargeable battery (8-10 hours)
What to Look For
Impedance Match
Most scanners work with 4-8 ohm speakers. Communications speakers are typically 8 ohm—universal compatibility.
Voice Optimization
Music speakers emphasize bass and treble. Communications speakers focus on the midrange where voice frequencies live (300Hz-3kHz).
Cord Length
Consider where you'll place the speaker relative to your scanner. 5-6 feet is standard; extension cables are available if needed.
Mounting Options
Desktop use is most common, but wall or under-cabinet mounting can be useful. Check if mounting hardware is included.
What to Avoid
- Computer speakers: Optimized for music and games, not voice clarity. Often add distortion to scanner audio.
- Bluetooth speakers: Latency issues make real-time monitoring frustrating. Stick with wired connections.
- Headphone splitters for multiple speakers: Splits the signal and reduces volume. Use a proper audio amplifier if you need multiple outputs.
- Cheap "universal" speakers: The $5 speakers on marketplace sites often have poor voice reproduction and fail quickly.
Speaker Placement Tips
Do
- Position at ear level when seated
- Angle the speaker toward your listening position
- Place on a solid surface (reduces vibration)
- Keep cord management tidy to avoid tangles
Avoid
- Placing in corners (causes boomy resonance)
- Positioning behind monitors or obstacles
- Setting on soft surfaces that absorb sound
- Running speaker wire near power cables
Frequently Asked Questions
Why do I need an external speaker for my scanner?
Built-in scanner speakers are small and often muffled. External speakers provide clearer audio, better volume, and improved voice intelligibility. This is especially important for desktop scanners positioned away from your listening area.
What speaker impedance does my scanner need?
Most scanners work with 4-8 ohm speakers. Check your scanner manual, but the common external scanner speakers (like the Uniden BC20) are designed to be compatible with most models. Using the wrong impedance won't damage your scanner but may affect volume.
Can I use any speaker with my scanner?
You can use most speakers with a 3.5mm or 1/8-inch jack (or adapter), but speakers designed for communications equipment work best. They're optimized for voice frequencies rather than music, making transmissions clearer and easier to understand.
Why does my scanner sound muffled?
Muffled audio usually indicates the speaker is too small, positioned poorly, or the scanner's internal speaker is aging. An external speaker with proper voice frequency optimization typically solves this. Also check that no dust or debris is blocking the speaker grille.
Should I get a powered or unpowered external speaker?
For most home setups, an unpowered (passive) speaker works fine—the scanner provides the power. Powered speakers add amplification for larger rooms but require batteries or a power outlet. Start with a quality passive speaker; upgrade to powered only if you need more volume.
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