HN40AC

$26.50

The HUAYUNXIN HN40AC features a lightweight PU + carbon brazing composite diaphragm, paired with a 32Ω universal impedance design, a high sensitivity of 118dB/mW and 100mW power handling.

With a precision 40mm form factor (39.99mm OD, 8.20mm thickness) and a highly stable acoustic structure, it delivers deep controlled bass, natural mids and smooth highs with ultra-low distortion, making it an ideal drop-in replacement or upgrade driver for most 40mm over-ear headphones and DIY audio projects.

Price is per unit. Minimum order: one pair.

HUAYUNXIN HN40AC Speaker Driver

Product Features

  • 40mm Dynamic Driver Unit — A custom-tuned 40mm large diaphragm driver delivers deep, controlled bass, natural vocals and smooth treble for a spacious, immersive over-ear soundstage.
  • PU + Carbon Brazing Composite Diaphragm — The lightweight yet rigid PU + carbon brazing diaphragm reduces unwanted resonance and distortion, offering faster transient response and richer detail across the whole frequency range.
  • 32Ω Universal Impedance — Standard 32-ohm rating ensures wide compatibility with smartphones, laptops, tablets, portable DACs and headphone amplifiers — no extra amplification required.
  • 118dB/mW High Sensitivity — Highly efficient voice coil design reaches high volume with low power input, revealing fine details even at quiet listening levels.
  • 100mW Stable Power Handling — Rated for up to 100mW input power, maintaining clean, stable performance with low distortion throughout the volume range.
  • Precision Replacement Build — Exact 40mm dimensions (OD 39.99mm / thickness 8.20mm) with pre-soldered contact points and an alignment marker for quick, reliable headphone repair and driver upgrades.
  • Wide Frequency Response (20Hz–20kHz) — Carefully balanced tuning covers punchy lows, textured mids and extended highs, ideal for music, gaming, monitoring and everyday listening.
  • Broad Application — Perfect replacement or upgrade driver for most 40mm over-ear / on-ear headphones, as well as DIY headphone builds and professional audio repair projects.

Specifications

ModelHN40AC
Diameter4040 mm
Thickness8/8.2 mm
Impedance3232  Ω
DiaphragmPU+CF
SPL118 dB/mW
Input Power100 mW

Our Factory


Frequently Asked Questions

Q: Do you offer OEM/ODM services and custom acoustic tuning?

A: Yes, we provide full OEM and ODM solutions. We offer two types of customization. The first requires a minimum order of just 2 units, selecting from our extensive range of existing materials (like building blocks). The second is a full customization requiring new molds, where the MOQ and delivery time depend on the development difficulty. We can customize coil size, diaphragm materials (such as PEEK, LCP, Titanium, CNTS), and the overall housing design.

Q: What is your Minimum Order Quantity (MOQ) and lead time?

A: For products where we already have the materials in stock, our MOQ is as low as 2 units. For most of our standard models, the MOQ is 100 pieces. Sample orders typically take 3-5 working days, while bulk production lead time is about 10-25 working days.

Q: Are the prices listed on your website for a single unit or a pair?

A: All the prices listed on our website are for a single driver unit, not a pair.

Q: Can I get samples for testing before placing a bulk order?

A: Yes! You can easily purchase samples directly through our official website. Please note that while we do not provide free samples, the sample cost will be fully deducted from your future bulk invoice.

Q: What types of audio drivers do you manufacture?

A: Our product range is diverse, including high-performance dynamic drivers, bone conduction drivers, and planar drivers. They are widely used in HiFi earphones (IEMs), headphones, aviation headsets, and Bluetooth devices.

Q: What are your manufacturing capabilities?

A: We have 19 years of experience in loudspeaker production and research, operating a facility of over 5000 square meters. Combined with China’s mature supply chain and our state-of-the-art CNC precision machining, we offer high-quality products and highly efficient production.

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