---
product_id: 32098629
title: "2\" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725"
brand: "gikfun"
price: "$28.51"
currency: USD
in_stock: true
reviews_count: 11
category: "Gikfun"
url: https://www.desertcart.us/products/32098629-2-4ohm-3w-full-range-audio-speaker-stereo-woofer-loudspeaker
store_origin: US
region: United States of America
---

# 4Ω impedance 2-inch driver size 3W power output 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725

**Brand:** gikfun
**Price:** $28.51
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your DIY sound game with compact power and crisp clarity!

## Quick Answers

- **What is this?** 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 by gikfun
- **How much does it cost?** $28.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/32098629-2-4ohm-3w-full-range-audio-speaker-stereo-woofer-loudspeaker)

## Best For

- gikfun enthusiasts

## Why This Product

- Trusted gikfun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stereo Ready Pack:** Comes as a convenient 2-piece set, perfect for creating immersive stereo soundscapes that impress.
- • **Compact Powerhouse:** Small 2" drivers deliver surprisingly rich 3W sound for your DIY audio projects.
- • **Crystal Clear Audio:** Full-range dynamic drivers produce balanced sound with a resonance frequency around 190Hz for crisp highs and solid bass.
- • **Perfect Arduino Pair:** Optimized 4Ω impedance ensures seamless integration with Arduino and other microcontroller setups.
- • **DIY Enthusiast’s Dream:** Ideal for hobbyists building custom radios, Bluetooth speakers, or home audio systems—no bulky gear required.

## Overview

The Gikfun 2" 4Ohm 3W Full Range Audio Speaker (Pack of 2) is a compact, high-quality woofer designed for Arduino and DIY audio projects. Featuring 2-inch dynamic drivers with 4Ω impedance and 3W power output, these speakers deliver clear, balanced sound with a resonance frequency near 190Hz. Perfect for hobbyists and makers, this stereo pair offers reliable performance for custom radios, Bluetooth speakers, and home audio setups.

## Description

desertcart.com: Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 : Electronics

Review: Great Little Project Speakers - These little project speakers worked great. I built a bluetooth radio for my dad and used them with no issues. The sound is impressive for the size and price point.
Review: Speakers - Fit perfect and sounds good.

## Features

- 2pcs 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino
- It will work well for home audio-visual equipment and other HiFi speakers, radio replacement, also suitable for DIY hobby soldering.
- Resonance Frequency :190Hz ±20%, Output Sound Pressure Level :77dB ±3dB, Insulation Resistance:10MΩ
- Rated Impedance: 4 ohm, Rated Power: 3W, Diameter: 2 inches
- Not include the Volume Control Cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01CHYIU26 |
| Audio Driver Size | 40 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Color | Silver |
| Control Method | Voice |
| Customer Package Type | Flat Free Package (FFP) |
| Customer Reviews | 4.4 4.4 out of 5 stars (749) |
| Date First Available | March 3, 2016 |
| Impedance | 4 Ohms |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | FALSE |
| Item Weight | 3.52 ounces |
| Item model number | LYSB01CHYIU26-ELECTRNCS |
| Manufacturer | Esooho |
| Maximum Range | 20 Meters |
| Model Name | EK1725 |
| Number of Items | 2 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 1.1"D x 4.5"W x 2.5"H |
| Recommended Uses For Product | Volume |
| Shape | cylinder |
| Speaker Size | 2 Inches |
| Speaker Type | Woofer |
| Special Feature | Bass Boost |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 2 Inches |
| Surround Sound Channel Configuration | 2.0 |
| Tweeter Diameter | 2 Inches |
| UPC | 728821643915 634894434896 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | Bluetooth |
| Woofer Diameter | 5.08 Centimeters |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Gikfun
- **Material:** Plastic
- **Mounting Type:** Flush Mount
- **Speaker Maximum Output Power:** 3 Watts

## Images

![2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 - Image 1](https://m.media-amazon.com/images/I/61vC9am1e7L.jpg)

## Questions & Answers

**Q: how many volts do i have to put in it?**
A: Well, the rating of the speaker is 4 ohms and 3 watts.  You are limited by the
power spec of 3 Watts.  To calculate the max voltage use this equation:
P = V x V/R.  Solving for V, one gets V = sqrt(P * R).  So, for these speakers
you get V = sqrt(3 watts * 4 ohms) = sqrt(12) = 3.46 volts.  The thing to
remember is that the 4 ohm "resistance" should be considered as an
impedance value.  That is it will most likely be a some combination of the
DC resistance of the voice coil and the AC reactance of the voice coil
measured at 1000 Hz, which is sort of a standard.  The thing you want to
consider is that at lower frequencies, the AC reactance will decrease and
for a given voltage, the current will increase and thus the power rating can
end up being exceeded.  At higher frequencies the AC reactance will increase
and for a given voltage, current will decrease and power will go down.
Generally, the power rating for a speaker is determined by how hot the voice
coil can be allowed to get before it fails.

I have used these with a small 5 volt stereo Class D amplifier rated at 3 watts
per channel.   With a reasonable enclosure they sound pretty good and can provide plenty of volume considering their size.

I hope this helps.

**Q: Is  one of the dimension really 4.5 inches**
A: No, the speakers are 2" x 2". The "4.5 x 1.1 x 2.5 inches" in the product description is for the package containing two speakers.

**Q: If I use this to replace 4 ohm computer speakers driven by 8w amp and keep volume well below max will I do damage?**
A: Probably no damage unless you hit them with more than 4 watts of power.

**Q: Are these speakers waterproof**
A: No. I never tested them, but they don't look like other waterproof speakers I have seen.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Little Project Speakers
*by Z***Y on October 31, 2025*

These little project speakers worked great. I built a bluetooth radio for my dad and used them with no issues. The sound is impressive for the size and price point.

### ⭐⭐⭐⭐⭐ Speakers
*by C***T on January 6, 2026*

Fit perfect and sounds good.

### ⭐⭐⭐⭐ Good Quality, Good Price. Won’t fit Echo Dot 3.
*by D***R on March 11, 2024*

I originally purchased to replace the speaker in an Echo Dot 3, but they are too large. They are perfect for arduino projects.

## Frequently Bought Together

- Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-03*