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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.

4.4/5

Product ID: 412589505

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Details

Brand
Gikfun
Speaker Maximum Output Power
3 Watts
Audio Output Mode
Stereo
Mounting Type
Flush Mount
Model Name
EK1725

📶Bluetooth wireless connectivity

🔊3W power output

🎚️4 Ohm impedance for crisp sound

Frequently Bought Together

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

DFPlayer - A Mini MP3 Player

ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

Description

🎧 Elevate your sound game—because your playlist deserves premium clarity!

DUAL SPEAKER PACK - Get stereo sound with two perfectly matched speakers for immersive audio experiences.
COMPACT POWERHOUSE - 3W full-range audio delivers rich, clear sound in a sleek 2-inch woofer design.
LIGHTWEIGHT PORTABLE - At just 100g each, these speakers fit perfectly into your on-the-go lifestyle without weighing you down.
VERSATILE COMPATIBILITY - Plug and play with smartphones, tablets, laptops, and TVs—your all-in-one audio upgrade.
SEAMLESS WIRELESS FREEDOM - Bluetooth connectivity lets you cut the cords and stream effortlessly up to 20 meters.

The Gikfun 2-pack 3W 4 Ohm full-range stereo woofers offer dynamic, wireless Bluetooth audio with versatile device compatibility. Compact and lightweight, these speakers deliver crisp sound for personal or portable setups, making them ideal for millennials seeking stylish, high-quality audio on the move.

Specifications

Speaker Type	Woofer
Special Feature	Subwoofer
Recommended Uses For Product	For Smartphones or Tablets
Compatible Devices	Smartphone, Tablet, Laptop, Television
Net Quantity	2 Count
Age Range (Description)	Adult
Item Weight	0.1 Kilograms
Impedance	4 Ohm
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
Tweeter Diameter	2 Inches
Water Resistance Level	Not Water Resistant
Audio Driver Type	Dynamic Driver
Subwoofer Connectivity Technology	Wireless
Connectivity Protocol	Bluetooth
Includes MP3 player?	No
Specific Uses For Product	personal or portable audio setups
Model	LYSB01CHYIU26-ELECTRNCS
Product Dimensions	2.79 x 11.43 x 6.35 cm; 100 g
Item model number	LYSB01CHYIU26-ELECTRNCS
Special Features	Subwoofer
Audio input compatible with the item	Auxiliary
Wattage	3 Watts
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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