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

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

Q: 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.

Q: 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.

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?

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

Q: Are these speakers waterproof

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

Product ID: 412589505

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Details

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

📏2-inch Woofer Diameter

🔊3W Power Output

🔌4 Ohm Impedance

Frequently Bought Together

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

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Description

🎶 Elevate your DIY sound game with precision-packed power!

PERFECT PAIR - Pack of 2 speakers ensures immersive stereo sound with true 2.0 channel experience.
DIY AUDIO MASTERY - Designed for makers and educators to build professional-grade audio systems effortlessly.
COMPACT POWERHOUSE - 3W full-range audio delivers crisp, clear sound for your DIY projects.
LIGHTWEIGHT PORTABLE - At just 100g and compact dimensions, ideal for on-the-go prototyping and setups.
VERSATILE COMPATIBILITY - Seamlessly integrates with Arduino, smartphones, tablets, laptops, and TVs.

The Gikfun EK1725 is a pair of 2-inch, 3W full-range stereo woofers with 4 Ohm impedance, designed for Arduino and small-scale audio projects. Lightweight and compact, these speakers deliver clear stereo sound and are compatible with a wide range of devices, making them perfect for professional makers and educators aiming to create immersive audio experiences.

Specifications

Model Name	EK1725
Speaker Type	Woofer
Special Feature	Subwoofer
Recommended Uses For Product	For Smartphones or Tablets
Compatible Devices	Smartphone, Tablet, Laptop, Television
Subwoofer Diameter	2 Inches
Net Quantity	2 Count
Surround Sound Channel Configuration	2.0
Colour	Silver
Included Components	2 speakers
Product Dimensions	2.8D x 11.4W x 6.4H Centimeters
Item Weight	0.1 Kilograms
Impedance	4 Ohms
Is Waterproof	false
Maximum Range	20 metres
Number of Items	2
Control Method	Voice
Wireless Communication Technology	Bluetooth
Speaker Size	2 Inches
Power Source	Battery Powered
Woofer Diameter	2 Inches
Tweeter Diameter	2 Inches
Customer Package Type	Flat Free Package (FFP)
Audio Driver Type	Dynamic Driver
Audio Driver Size	4E+1 Millimetres
Subwoofer Connectivity Technology	Wireless
Number of Power Levels	1
Specific Uses For Product	DIY electronics projects, Arduino-based prototyping, small-scale audio systems, educational projects for learning about audio technology
UPC	728821643915 634894434896
Manufacturer	Gikfun
Shape	rectangular prism
Set Name	2
Model	LYSB01CHYIU26-ELECTRNCS
Item model number	LYSB01CHYIU26-ELECTRNCS
Special Features	Subwoofer
Audio input compatible with the item	Auxiliary
Wattage	3 Watts
Battery Average Life	5 Hours
Batteries Included	No
Batteries Required	No
Has Auto Focus	No
Programmable Buttons	No
Country of Origin	USA
Item Weight	100 g

Have a Question? See What Others Asked

how many volts do i have to put in it?

Is one of the dimension really 4.5 inches

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

Are these speakers waterproof

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