40mm Full-Range Internal Magnet Speaker 4Ω 3W | HUXUAN
40mm Full-Range Internal Magnet Speaker 4Ω 3W | HUXUAN
HUXUAN 40mm Full-Range Internal Magnet Speaker — Clear, Versatile Sound in a Compact Form
This HUXUAN 40mm Square Internal Magnet Speaker delivers full-frequency audio coverage in a compact, portable form factor. Engineered with a 16-core voice coil, 4Ω impedance, and 3W rated power, it is an ideal replacement or upgrade driver for Bluetooth speakers, walkie-talkies, DIY audio projects, and other portable electronics. Made in Mainland China.
Key Features
- Full-Range Audio: Covers 0–20KHz for clear, balanced sound reproduction across the entire audible spectrum.
- Internal Magnet Design: Minimal magnetic leakage means low susceptibility to external magnetic interference — great for compact enclosures and sensitive electronics.
- High Sensitivity: 94dB/W sensitivity ensures efficient audio output even at lower power levels.
- Low Internal Resistance: Maximizes amplifier efficiency and maintains signal integrity for crisp sound quality.
- Temperature Resilient: Tested through rigorous high-intensity, low-temperature cycling to ensure long-lasting durability.
- Universal Compatibility: Works with 4Ω 3W amplifiers; suitable for walkie-talkies, Bluetooth speakers, intercoms, and DIY audio builds.
- Compact Dimensions: φ40mm x H20mm — fits neatly into tight enclosures without compromising performance.
Technical Specifications
| Product Name | Square 40mm Internal Magnet Speaker |
| Magnetic Circuit Type | Internal Magnet |
| Speaker Type | Pot-bottom Cap Speaker |
| Rated Power | 3W |
| Impedance | 4Ω |
| Sensitivity | 94dB/W |
| Frequency Range | 0–20KHz |
| Drive Voltage | 3.4–4.4V |
| Dimensions | φ40mm x H20mm |
| Cabinet Material | Plastic |
| Input Power | <25W |
| Voltage Range | USB (5–20V DC) |
| Waterproof | No |
| Country of Origin | Mainland China |
What's in the Box
- 1 × 40mm Internal Magnet Speaker
Applications
Perfect for a wide range of audio applications including walkie-talkies, portable Bluetooth speakers, DIY speaker projects, intercoms, and other consumer electronics requiring a reliable, full-range driver.
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Note: Colors in product images may vary slightly due to monitor brightness and lighting conditions. Please allow minor measurement tolerances for stated dimensions.
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Frequently Asked Questions
Q: What amplifier is this 40mm internal magnet speaker compatible with?
A: This full-range speaker is rated at 4Ω impedance and 3W power, making it directly compatible with any 4Ω 3W amplifier board or module. It works well in Bluetooth speaker builds, walkie-talkies, intercoms, and similar DIY audio electronics.
Q: Does the internal magnet design make any difference compared to an external magnet speaker?
A: Yes — the internal magnet design significantly reduces magnetic flux leakage, which means the speaker produces less stray magnetic field. This makes it a better choice for devices where nearby electronic components could be affected by magnetic interference, such as compact Bluetooth speakers or communication devices.
Q: Is this speaker waterproof or suitable for outdoor use?
A: This speaker is not waterproof and is not rated for direct outdoor or wet-environment use. It is best suited for use inside enclosures in dry indoor settings or integrated into finished portable electronic devices.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.