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Pair of compact desktop speakers in black finish with front volume knob

Monoprice Inc.

Monoprice 143240 50-Watt Bluetooth Desktop Speakers

SKU CH-9E5W-5VZ9D

50-watt powered desktop speakers with Bluetooth and multiple wired inputs driving 3.5" woofers and 0.75" silk dome tweeters

  • TypeSpeakers
  • FeaturesPremium Drivers and Build: The high output 3.5" polypropylen
  • Class AB amplification delivers 40 watts of clean power
  • 5-inch polypropylene woofers produce deep, accurate bass
  • 75-inch silk dome tweeters reveal crisp high-frequency detail
  • Bluetooth connectivity enables wireless streaming from phones and computers
  • Three wired inputs — 3.5 mm, RCA, and 1/4-inch — suit consumer and pro gear

Monoprice DT-3BT 50-Watt Desktop Speakers

The Monoprice DT-3BT is a pair of powered multimedia speakers built for near-field listening at a desk. They deliver 50 watts of total Class AB amplification through dedicated amplifiers for each driver. The system uses 3.5" polypropylene woofers and 0.75" silk dome tweeters. Bluetooth connectivity is built in for wireless streaming from phones or computers.

Wired and wireless inputs for flexible placement

A front-panel 3.5 mm TRS jack provides quick access for portable devices. The rear panel offers unbalanced stereo RCA inputs for consumer gear and balanced 1/4" stereo inputs for professional audio sources. Because amplification is internal, no separate receiver or amplifier is required. The compact cabinets fit on typical desktops without dominating the workspace.

Suited for desktop users who want multiple input

Buyers who need a simple powered speaker pair with both Bluetooth and professional balanced connections will find this model practical. Those who require a subwoofer output, digital optical input, or higher output power for larger rooms should look at other systems.

Highlights

  • Class AB amplification delivers 40 watts of clean power
  • 5-inch polypropylene woofers produce deep, accurate bass
  • 75-inch silk dome tweeters reveal crisp high-frequency detail
  • Bluetooth connectivity enables wireless streaming from phones and computers
  • Three wired inputs — 3.5 mm, RCA, and 1/4-inch — suit consumer and pro gear

Specifications

BrandMonoprice
Model143240
Part Number143240
TypeSpeakers
FeaturesPremium Drivers and Build: The high output 3.5" polypropylene woofers and 3/4" silk dome tweeters are each driven by a dedicated amplifier, with a total of 40 watts of Class AB amplifications. The rounded and ported MDF cabinets have been custom tuned for superior near field frequency response and sonic performance, while ensuring that they look as good as they sound.

Questions about this item

At what output level do the 40-watt Class AB amplifiers reach their limit during long listening sessions?

The 40 watts of Class AB amplification drives each 3.5" woofer and 0.75" tweeter with a dedicated amp, so sustained high-volume playback stays clean until the amplifiers hit their 40-watt ceiling.

How much heat or fan noise do the built-in amplifiers produce when the speakers run all day?

Class AB designs run warmer than Class D, but the cabinets are vented and have no internal fan, so you hear only the music — no mechanical noise — even after hours of continuous use.

Which source devices can I connect directly without buying extra cables or adapters?

You can plug in any device with a 3.5 mm headphone jack, stereo RCA outputs, or balanced 1/4" outputs; Bluetooth lets you stream wirelessly from phones, tablets or computers.

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