Xuanda Electronics Co., Ltd. · XDEC
78×78×38.8Hmm External Magnet Speaker Driver - Desktop Speaker Application
8Ω Impedance · 10W Rated Power · 81.5dB High Sensitivity
Desktop Speaker / Car Audio · Pain Points & Solutions
❌ Common Pain Points
- Desktop space is limited, traditional drivers too large to fit
- Strong bass required but cabinet volume is restricted
- Long operating hours demand stable heat dissipation & low power
- Desktop/car temperature variations affect driver reliability
- Muddy sound, high distortion, vocals and instruments hard to balance
✅ XDEC Solution
- 78×78×38.8Hmm compact square form factor, fits standard desktop cabinets
- 10W high power + F0 as low as 130Hz for deep, powerful bass
- 81.5dB high sensitivity - loud output with low power consumption
- Wide temp range (-25℃~+60℃), survives indoor/car temperature extremes
- F0~20KHz wide frequency response, ≤5% THD - clear vocals, rich music
Product Specifications
| Parameter | Specification |
|---|---|
| Model | XDEC-78W08T20NI04 |
| Dimensions | 78×78×38.8Hmm |
| Impedance | 8±20% Ω |
| Rated Power | 10W |
| Max Power | 12W |
| Sensitivity (SPL) | 81.5±3 dB (0.5W / 0.5M) |
| Resonance Frequency (F0) | 130±20% Hz |
| Frequency Response | F0 ~ 20KHz |
| Total Harmonic Distortion | ≤5% Max |
| Polarity | Positive (+) |
| Load Test | Normal after 48h white noise test |
| High Temp Test | +60℃ 48h, normal after 2h at room temp |
| Low Temp Test | -25℃ 48h, normal after 2h at room temp |
| Humidity Test | +40℃ 90~95%RH 48h, normal after 4h at room temp |
| Storage Temperature | -25℃ ~ +60℃ |
Dimensional Drawing & Frequency Response
Dimensional Drawing
78×78×38.8Hmm dimensional illustration (for reference only)
Frequency Response Curve
F0~20KHz wide frequency range (typical curve, for reference)
Key Product Advantages
81.5dB High Sensitivity
Loud output at low power consumption - clear desktop audio, voice interaction, long battery life
F0~20KHz Wide Response
Full-range coverage for vocals & music, ≤5% THD - pure, rich audio quality
78mm Compact Square Form
Standard desktop speaker cabinet fit, 38.8Hmm slim height for easy integration
Wide Temp -25℃~+60℃
Survives desktop/car temperature extremes - no failure in heat or cold
17 Years Manufacturing
ISO9001 certified factory, 5 million pcs/month capacity, stable supply, 7-15 day delivery
Typical Application Scenarios
Desktop Speakers
Primary Application · 10W powerful output, deep bass, compact form fits all desktop enclosures
Car Audio
Wide temp design, F0~20KHz covers vocals & instruments, ideal for car door/dash speakers
Pro Audio / Amps
12W peak power, wide response low distortion - premium choice for instrument amplifiers
Home Theater
81.5dB high sensitivity drives small cabinets to high SPL - home theater surround sound
Soundbar
F0 as low as 130Hz adds bass, compact square design fits ultra-slim Soundbar cabinets
Why Choose XDEC 78mm External Magnet Driver?
| Aspect | XDEC-78W08T20NI04 | Typical Market Spec |
|---|---|---|
| Sensitivity | ✅ 81.5dB (High) | 78~80dB (Average) |
| Frequency Response | ✅ F0~20KHz (Wide) | 150Hz~15KHz (Narrower) |
| THD | ✅ ≤5% (Low Distortion) | ≤10% (Average) |
| Manufacturing Experience | ✅ 17 Years Focus on Speaker Drivers | New entrants or small workshops |
| MOQ / Customization | ✅ MOQ 3,000pcs, 500pcs trial batch, OEM/ODM | MOQ 5,000+, no customization |
Quality Certification & Factory Strength
ISO9001 Certified
Quality management system, full traceability
5 Million Pcs/Month
Large-scale manufacturing, ample capacity for bulk orders
7-15 Days Delivery
Bulk orders fast delivery, samples in 3-5 days
OEM/ODM Available
Parameters, appearance, packaging fully customizable
Frequently Asked Questions
Q1: How does this 78mm external magnet driver perform in desktop speakers / car audio?
The 78×78×38.8Hmm external magnet multimedia speaker driver (XDEC-78W08T20NI04) is specifically designed for desktop speakers and car audio: 10W rated power delivers powerful, punchy bass, F0 as low as 130Hz ensures deep bass extension, 81.5dB high sensitivity produces large dynamics at medium-to-low power; F0~20KHz wide response balances vocal clarity and musical richness, ≤5% distortion guarantees pure audio quality. Wide temperature range (-25℃~+60℃) withstands indoor/car temperature extremes, 8Ω standard impedance perfectly matches mainstream amplifiers.
Q2: What is the minimum order quantity?
MOQ is 3,000 pcs. A trial batch of 500 pcs is available to reduce early market validation risk. 1-4 free samples can be requested (sample lead time 7-15 days, sample delivery in 3-5 days). Test first, then bulk order!
Q3: What is the delivery lead time?
Bulk order lead time: 7-15 days (depending on order quantity). Sample delivery: 3-5 days. Monthly capacity of 5 million pieces with high on-time delivery rate, meeting your fast time-to-market needs.
Q4: What customization services do you offer?
Full-service customization: ① Parameter tuning (power/sensitivity/impedance/frequency response fine-tuning); ② Appearance customization (frame color, labels, wire specs); ③ Packaging customization (color boxes, manuals, brand packaging); ④ OEM/ODM mass production. Professional engineering team provides one-on-one support with a solution in as fast as 48 hours.
🎁 Request Free Samples
XDEC-78W08T20NI04 · 78×78×38.8Hmm External Magnet Driver · Desktop Speaker / Car Audio
📞 13528883307(Manager Yuan)｜📧 xd12@xdec.cn｜🌐 www.xdecspeakerdriver.com
🕐 Weekdays 9:00-18:00 · Free Samples 1-4pcs · MOQ 3,000pcs
© 2026 Xuanda Electronics Co., Ltd. (XDEC) · Professional Speaker Driver Manufacturer Since 2009 · XDEC-78W08T20NI04
