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Two small round speakers, silver cones, black frames

ALMOCN 2PCS 1.5" 4Ohm 3W DIY Full Range Speaker

SKU CH-9EH6-ED9P6

Two 1.5-inch 4-ohm 3-watt full-range drivers for compact DIY audio projects and Arduino kits

  • Channel configuration2.0
  • Connection typeAuxiliary
  • Total wattage10 W
  • RMS power per satellite10 W
  • Driver unitDynamic driver
  • Frequency range20 kHz
  • Full-range 1.5" drivers cover 0-20KHz frequency range
  • 4 ohm impedance matches common amplifier outputs
  • 3W rated power handles typical DIY audio projects
  • 83dB sensitivity delivers clear sound at low power
  • Pair of speakers enables stereo 2.0 configuration

DIY Full-Range Speaker Pair

This pair of 1.5 inch full-range drivers is sold as a two-piece kit for hobbyists building compact audio projects. Each unit handles 3 watts at 4 ohms and mounts easily in small enclosures. The speakers suit Arduino-based sound experiments and custom mini speaker builds. No amplifier or crossover is included in the package.

4 Ohm Impedance Match

The critical specification is the 4 ohm nominal impedance, which determines the amplifier or driver circuit you must use. Connecting these drivers to an output stage designed for a different load will cause distortion or damage. The 3 watt power rating sets the maximum continuous input before thermal limits are reached. Verify your amplifier matches both values before wiring.

Makers Needing Compact Drivers

Builders creating portable Bluetooth speakers, robot voice modules or desktop audio accessories will find the 40 mm diameter and 20 mm depth convenient. Users requiring deep bass, high sound-pressure levels or a ready-to-play system with built-in amplification should consider larger or powered alternatives. The raw drivers demand an external amplifier and enclosure design.

How it compares

Measured against everything we stock in Desktop Speakers & Soundbars, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 96% of the 838 comparable items (median $40.99).

Specifications

Product
Brand nameALMOCN
Model nameNO
Product typePortable Speaker
Product color4Ohm 3 W
Audio & video
Channel configuration2.0
RMS power per satellite10 W
Driver unitDynamic driver
Frequency range20 kHz
Rated impedance4 ohm
Ports & slots
Connection typeAuxiliary
Power
Total wattage10 W
Size & build
Measurements0.39 in × 0.78 in × 0.78 in
Product weight0.032 kg
In the box
In the boxNO
More details
Control methodTouch

Questions about this item

How loud will a 3 W driver actually play in a small enclosure?

Each unit handles 3 W rated input and reaches 83 ± 3 dB sensitivity, so a pair driven at full power gives clear room-filling volume for desktop or portable builds.

What does the 4 Ω impedance mean for the amplifier I choose?

The 4 Ω nominal load (4 ± 15 %) works with any amp stable down to 4 Ω; most Arduino audio shields and small class-D modules are designed for exactly this impedance.

Will the 40 mm diameter and 20 mm depth fit my 3D-printed baffle?

Each driver measures 40 mm across and 20 mm deep, with a 1.5 inch frame — check your cut-out against those dimensions before printing.

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