31mm Round Full-Range Speaker Driver | Smart Speaker Application
4Ω Impedance | 3W Rated Power | 91dB High Sensitivity
Free SamplesOEM/ODM Available
🎯 Smart Speaker Design Challenges
- 🔸 Compact cavity, need small size big sound
- 🔸 Voice interaction requires high sensitivity, low distortion
- 🔸 Full-range coverage, voice + music balance
- 🔸 Low power design for extended battery life
✅ XDEC Solution
- 📦 31mm compact size, easy to fit in small cavities
- 🎯 91dB ultra-high sensitivity, more accurate voice recognition
- 🎵 F0~15KHz wide frequency response, clear voice & rich music
- ⚡ 3W low power design, ideal for battery-powered devices
📋 Product Specifications
| Parameter | Specification |
|---|---|
| Model | XDEC-31Y04T15NC28 |
| Dimensions | Φ31mm × 17Hmm (Round) |
| Impedance | 4±15%Ω |
| Rated Power | 3W |
| Max Power | 4W |
| Sensitivity | 91±3dB (0.1W/0.1m) |
| Resonance Frequency | 280±20%Hz |
| Frequency Response | F0~15KHz |
| Distortion | ≤5% |
| Polarity | + (Positive) |
| Load Test | Normal operation after 48hr white noise test |
| High Temp Test | +60℃ 20~25%R.H, 48hr test, no abnormalities |
| Low Temp Test | -25℃±3℃, 48hr test, no abnormalities |
| Humidity Test | +40℃ 90~95%R.H, 48hr test, no abnormalities |
| Storage Temp | -25℃ ~ +60℃ |
📐 Dimensions & Frequency Response
Product dimensions (unit: mm)
Frequency response curve (F0~15KHz)
⭐ Key Features
Ultra High Sensitivity 91dB
91dB sensitivity for more responsive voice interaction and higher wake-up recognition rate
31mm Compact Size
Φ31mm round design with 17mm height, easy to embed in smart speaker compact cavities
Wide Freq Response F0~15KHz
F0~15KHz wide frequency coverage, clear voice and rich music layers
Wide Temperature Range
-25℃~+60℃ wide temperature range, suitable for various indoor environments
17 Years Professional Manufacturing
Xuanda Electronics (XDEC) - 17 years of professional speaker manufacturing, ISO9001 certified
🏭 Typical Applications
Smart Speakers
Smart speaker/smart home hub
Bluetooth Speakers
Portable BT speakers/outdoor speakers
Soundbar
Soundbar/Sound base
Smart Home
IoT devices/smart terminals
Educational Robots
AI education robots/voice devices
⚖️ XDEC vs Industry Standard
| Comparison | XDEC 31mm Speaker Driver | Industry Standard |
|---|---|---|
| Sensitivity | 91dB (Ultra High) | 78~85dB |
| Size | Φ31mm × 17Hmm (Compact) | Φ36~45mm |
| Rated Power | 3W | 1~2W |
| Freq Response | F0~15KHz | F0~10KHz |
| Distortion | ≤5% | ≤10% |
🏆 Quality & Factory Strength
ISO9001 Certified
International quality management system
5M Units/Month
High-volume stable production
7-15 Days Lead Time
Fast response & on-time delivery
OEM/ODM
Custom development support
❓ Frequently Asked Questions
Q1: How does this 31mm round full-range speaker perform in smart speakers?
Φ31mm round full-range speaker driver designed for smart speakers, 91dB ultra-high sensitivity ensures accurate voice wake-up recognition, F0~15KHz wide frequency response delivers clear voice and rich music, 3W low power design ideal for battery-powered smart speakers, 31mm compact size easily fits in small cavities.
Q2: What is the minimum order quantity?
Standard MOQ is 3000pcs. For pilot production, 500pcs is available for small batch trial. Qualified customers can apply for 1-4 free samples, sample lead time 7-15 days, mass production lead time 7-15 days.
Q3: How long is the delivery time?
Sample lead time 3-5 days, mass production lead time 7-15 days. Monthly capacity 5 million units, large orders can be quickly responded and delivered on time. Rush service available (please contact for details).
Q4: What customization services are supported?
OEM/ODM customization supported, including: impedance customization (4Ω/8Ω etc.), power customization, sensitivity optimization, lead wire length/spec customization, basket material selection, color customization, etc. With 17 years professional manufacturing experience, we can provide optimal solutions for your application scenarios.
🚀 Request Free Samples Now
Qualified buyers can apply for 1-4 free samples, delivered in 7-15 days
📞 Contact Us
📞 13528883307 (Manager Yuan)
📧 xd12@xdec.cn
🌐 www.xdecspeakerdriver.com
© 2026 Xuanda Electronics Co., Ltd (XDEC) - 17 Years of Speaker Manufacturing
