20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP CN

20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit

CN
$28.15 $33.31
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20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP CN
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP CN
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP CN
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
  • 20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit Loudspeaker Unit HIP
20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit

20W 78mm Aluminum Speaker 8 Ohm – HiFi Bass Loudspeaker Unit

$28.15 $33.31
Ships FromCN

20W 78mm Aluminum Film Loudspeaker – Deep Bass & Crystal-Clear Audio

Upgrade your audio setup with this high-power 20W 78mm aluminum diaphragm loudspeaker. Engineered for HiFi enthusiasts, home audio DIYers, and professional sound builders, this compact yet powerful speaker unit delivers rich, full-bodied bass and smooth, detailed highs — all in a robust, waterproof enclosure.

Key Features

  • Powerful 20W Output: The large 3-inch (78mm) aluminum diaphragm drives deep, impactful bass and handles dynamic music, movies, and low-frequency audio with ease.
  • Aluminum Diaphragm & Cap Construction: The rigid aluminum drum paper and aluminum cap minimize distortion and ensure fast transient response, giving you clean, accurate sound even during extended, high-volume use.
  • Smooth High-Frequency Extension: The black aluminum diaphragm delivers clear, detailed highs — perfect for appreciating intricate instrumentals and vocals in HiFi listening environments.
  • Fully Waterproof Design: Built to operate reliably in humid conditions including bathrooms, outdoor settings, and in-car audio systems for uninterrupted performance anywhere.
  • Universal 8Ω Impedance: Standard 8-ohm impedance ensures broad compatibility with amplifiers, Bluetooth speaker builds, DIY audio projects, and a wide variety of sound systems — no special adapters required.
  • External Circuit Form: Straightforward external-type circuit design makes installation and integration into your existing setup quick and hassle-free.

Specifications

Diaphragm Material Aluminum Film
Rated Power 20W
Impedance 8 Ohm (8Ω)
Diameter 78mm / 3.07 inches
Product Size 78 × 78mm (3.07 × 3.07 in)
Circuit Form External Type
Water Resistance Waterproof
Quantity 1 PC
Country of Origin Made in China

Package Includes

  • 1 × 78mm Black Aluminum Film 8Ω 20W Loudspeaker Unit

Perfect For

  • DIY speaker and audio cabinet builds
  • Replacement or upgrade speaker units
  • Bluetooth speaker enclosure projects
  • Car audio and marine audio installations
  • Home theater and HiFi system enhancements
  • Bathroom and outdoor speaker setups

Note: Please allow ±1–2 cm measurement tolerance due to manual measuring. Slight color differences may appear due to varying display calibrations.

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Frequently Asked Questions

Q: What amplifiers is this 8 ohm loudspeaker compatible with?

A: This speaker unit features a standard 8-ohm (8Ω) impedance, making it compatible with a wide range of amplifiers, Bluetooth speaker boards, Class D amplifiers, and most DIY audio amplifier modules rated for 4–16 ohm loads. Always verify your amplifier's rated power to avoid overpowering the unit beyond its 20W rating.

Q: Is the 78mm aluminum film speaker truly waterproof? Where can it be used?

A: Yes, this loudspeaker is designed with a fully waterproof construction, making it suitable for humid and wet environments such as bathrooms, outdoor enclosures, boats, and car audio installations where moisture resistance is essential.

Q: What is the advantage of an aluminum diaphragm over paper cone speakers?

A: Aluminum diaphragms offer superior rigidity compared to traditional paper cones, which reduces distortion at high output levels, extends high-frequency response, and maintains consistent sound quality over prolonged, high-power usage — ideal for HiFi and professional audio applications.

Q: Can this speaker be used as a direct replacement in an existing cabinet or enclosure?

A: This 78mm (3.07-inch) speaker unit can be used as a replacement or upgrade in enclosures designed for 3-inch drivers. Ensure your enclosure matches the speaker's mounting dimensions and that your amplifier is rated for 8 ohms at up to 20W for best results.

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.

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