how many volts do i have to put in it?

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.

Is one of the dimension really 4.5 inches

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.

If I use this to replace 4 ohm computer speakers driven by 8w amp and keep volume well below max will I do damage?

Probably no damage unless you hit them with more than 4 watts of power.

Are these speakers waterproof

No. I never tested them, but they don't look like other waterproof speakers I have seen.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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

Product ID: 32098629

Details

Audio Output Mode
Stereo
Brand
Gikfun
Connectivity Technology
wired
Mounting Type
Flush Mount
Speaker Maximum Output Power
3 watts

📏2-inch Driver Size

🔊3W Power Output

🎛️4Ω Impedance

NZ$36

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

Description

🎧 Tiny speakers, huge sound—upgrade your DIY audio game now!

DOUBLE THE IMPACT - Pack of 2 speakers lets you build immersive stereo soundscapes that stand out in any project.
COMPACT POWERHOUSE - Small 2-inch drivers deliver surprisingly rich 3W stereo sound for your DIY projects.
CRYSTAL CLEAR AUDIO - Full-range dynamic drivers produce balanced sound with a resonance frequency around 190Hz for crisp highs and solid bass.
DIY READY VERSATILE - Ideal for hobbyists and pros alike—perfect for custom radios, home audio, and educational electronics kits.
PERFECT ARDUINO PARTNER - Optimized 4Ω impedance ensures seamless integration with Arduino and other microcontroller setups.

The Gikfun 2" 4Ohm 3W Full Range Audio Speaker (Pack of 2) is a compact, wired stereo woofer designed for Arduino and DIY electronics projects. Featuring 2-inch dynamic drivers with 4Ω impedance and 3 watts power output, these speakers deliver clear, balanced sound with a resonance frequency near 190Hz. Perfect for hobbyists building custom audio devices, they offer reliable performance in a lightweight, flush-mount plastic enclosure.

Specifications

ASIN	B01CHYIU26
Additional Features	Bass Boost
Antenna Location	Volume
Audio Driver Size	40 millimeters
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#14,872 in Electronics ( See Top 100 in Electronics ) #11 in Surround Sound Systems
Brand	Gikfun
Built-In Media	2 x Speaker
Color	Silver
Compatible Devices	Desktop, MP3 Player, Smartphone
Connectivity Protocol	Bluetooth
Connectivity Technology	wired
Control Method	Voice
Controller Type	Volume control
Customer Package Type	Flat Free Package (FFP)
Customer Reviews	4.3 4.3 out of 5 stars (774)
Enclosure Material	Plastic
Impedance	4 ohm
Is Waterproof	FALSE
Item Dimensions D x W x H	1.1"D x 4.5"W x 2.5"H
Item Weight	0.1 kg
Manufacturer	Esooho
Maximum Range	20 meters
Model Name	EK1725
Model Number	LYSB01CHYIU26-ELECTRNCS
Mounting Type	Flush Mount
Number of Audio Channels	2
Number of Items	2
Number of Power Levels	1
Power Source	Corded Electric
Speaker Maximum Output Power	3 watts
Speaker Size	2 inches
Speaker Type	Woofer
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	2 inches
Tweeter Diameter	2 inches
UPC	728821643915 634894434896
Unit Count	1 Count
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	5.08 centimeters

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

NZ$36

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews