# 27mm Magnetic Speaker/Receiver – 300Ω

27mm 300Ω magnetic speaker/receiver, compact & lightweight, fits headphones, wearables, and aviation headsets via adapter frame.

- **Seller:** [Amigatronic](https://lectronz.com/stores/amigatronic), Italy, Italy
- **Price:** €12.27 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Audio
- **Product page:** https://lectronz.com/products/-27mm-magnetic-speakerreceiver-300

## Images

![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MjgsInB1ciI6ImJsb2JfaWQifX0=--a59e2f13bb754b775bc053346b4ce6c2cf2b18df/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-09-25T08-48-20.260Z-4610024084.jpg)
![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MjksInB1ciI6ImJsb2JfaWQifX0=--db80a3644a7ee66904cac7fbbb92d116c3062cb3/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-09-25T08-48-20.260Z-4610022385.jpg)
![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MzAsInB1ciI6ImJsb2JfaWQifX0=--15aa869a667e87131906b0ea46c7e5683c5e0fd4/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-09-25T08-48-20.260Z-Senza-20titolo-1.jpg)
![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MzEsInB1ciI6ImJsb2JfaWQifX0=--9bef62049ce359d3231daf6af33e457c0d3d1964/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-09-25T08-49-20.390Z-4610022464.jpg)
![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MzIsInB1ciI6ImJsb2JfaWQifX0=--a3bfa35125ef75d9fe3f11f8da225c730d16749e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2026-09-25T08-49-20.390Z-4610022494.jpg)
![27mm Magnetic Speaker/Receiver – 300Ω](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzI5MzMsInB1ciI6ImJsb2JfaWQifX0=--8e067140f38399525625d3f72d34ba8545741a42/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGVnIiwicmVzaXplX3RvX2xpbWl0IjpbOTYwLDY0MF0sInNhdmVyIjp7InN0cmlwIjp0cnVlfX0sInB1ciI6InZhcmlhdGlvbiJ9fQ==--4e27bac8cdfb621fb828f6a3a5982fe1a423b516/2026-09-25T08-56-58.038Z-A9jf1lrh_145cyd7_4ms-topaz-upscale-4x..jpeg)

## Description

# 27mm Magnetic Speaker/Receiver – 300Ω

Compact magnetic speaker/receiver, ideal for compact audio projects: headphones, wearables, hearing aids, DIY audio prototypes, and aviation headset/helmet builds.

## Technical Specifications

| Parameter | Value |
|---|---|
| Rated Power | 15 mW |
| Max Power | 30 mW |
| Impedance | 300 Ω ± 15% |
| Sensitivity (SPL @ 1kHz, 2.12Vrms, IEC 318) | 110 ± 3 dB |
| Resonant Frequency | 400 Hz ± 20% |
| Diameter | 26.8 mm |
| Thickness | 8 mm |
| Magnet Material | NdFeB (Neodymium) |
| Diaphragm Material | Mylar |
| Weight | 2.3 g |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -30°C ~ +60°C |
| Compliance | RoHS / REACH |

## Notes

- **Polarity**: applying positive voltage to the positive terminal moves the diaphragm outward (red dot side = positive polarity).
- Tested for temperature, humidity, vibration, drop, and sustained load resistance.
- The 300Ω impedance matches the industry standard used in passive aviation headsets.
- **Aviation headset/helmet use**: thanks to its compact 26.8mm size and standard 300Ω impedance, this driver can be fitted into aviation headset or helmet earcups using a mechanical adapter/frame. Physical fitment with the specific earcup should always be verified before installation.

## Ideal For

- Headphones and earbuds
- Wearable audio devices
- Aviation headsets and helmets (via mechanical adapter/frame)
- Electronics/audio prototyping
- Hearing aids and assistive devices

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*Specifications subject to change without notice.*

## Shipping policy

Shipping via courier could not be possible in some very rare cases and therefore it will be replaced with other shipping method unconditionally.