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40mm Full Frequency Internal Magnet Speaker 3W 4Ω
Original price was: $9.89.$9.19Current price is: $9.19.
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Compact 40mm full-range internal magnet speaker with 3W power and 4Ω impedance.
- High sensitivity at 94dB/W
- Low magnetic leakage and resistance
- Designed for Bluetooth speakers and walkie-talkies
999 in stock
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Estimated Delivery Time3–7 business days
Compact design with robust performance
The 40mm full frequency speaker delivers reliable audio with a compact square form factor, perfect for tight installation spaces.
Its internal magnetic structure minimizes magnetic leakage, ensuring minimal interference with surrounding components.
Optimized for 4Ω 3W amplifiers
This speaker is engineered to work with 4-ohm speakers and 3-watt amplifiers, providing crisp sound without distortion at mid-power levels.
- Impedance: 4Ω
- Rated Power: 3W
- Drive Voltage: 3.4–4.4V
High sensitivity and durability
Features a high sensitivity of 94dB/W, maximizing audio output efficiency.
Tested under rigorous high-intensity, low-temperature cycling to ensure consistent performance in varied environments.
Broad compatibility and applications
Ideal for integration in walkie-talkies, Bluetooth speakers, and similar portable audio devices where space and performance are priorities.
Key specifications
This section highlights core technical details for quick reference.
- Frequency range: 0–20kHz
- Dimensions: Diameter 40mm, Height 20mm
- Type: Pot-bottom cap speaker
- Magnetic circuit: Internal magnet
What's in the box
- Internal magnet speaker ×1
Product FAQ
Frequently asked questions
01 What is the size of this speaker?
This speaker measures 40mm in diameter with a height of 20mm.
02 What power rating does this speaker support?
It has a rated power of 3 watts suitable for low-power amplifiers.
03 What is the speaker impedance?
The speaker has an impedance of 4 ohms.
04 Can this speaker be used in Bluetooth devices?
Yes, it is suitable for Bluetooth speakers as well as walkie-talkies.
05 What is the frequency range of the speaker?
The speaker operates across a frequency range of 0 to 20kHz.
06 Does this speaker have an internal magnet?
Yes, it uses an internal magnetic circuit type for low magnetic leakage.
07 What is the sensitivity rating of the speaker?
Its sensitivity is 94 decibels per watt (94dB/W).
08 Is the speaker resistant to external magnetic interference?
Yes, it has minimal susceptibility to external magnetic interference and low magnetic leakage.
09 What voltage range does the speaker support?
It operates within a drive voltage range of 3.4 to 4.4 volts.
10 What materials are used in the speaker cabinet?
The speaker cabinet material is plastic.
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