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20mm 26mm 28mm 30mm 40mm 8ohm 1W/2W Small Sound Chamber Speaker Round Cavity 4Ω 1W Medical Beauty Instrument Smart Home Speaker

20mm 26mm 28mm 30mm 40mm 8ohm 1W/2W Small Sound Chamber Speaker Round Cavity 4Ω 1W Medical Beauty Instrument Smart Home Speaker

Price range: $0.82 through $1.48

Wholesale pricing up to 10% off

Minimum order quantity: 100 pcs

A round micro speaker already seated in its own sound chamber, so the cone works against a fixed air volume.

Product overview

Product type
Configurable product with multiple options
Minimum order
100 pcs
Volume pricing
200+ pcs: 10% off
Options
sort: 20MM 8Ω2W, 26MM 4Ω1W, 28MM 8Ω1W, 30MM 8Ω1W, 40MM 4Ω2W, 40MM 8Ω2W
Customization
OEM/ODM, custom length, connector, colour and packing
Payment
T/T bank transfer; card payments where available
Shipping
DHL, FedEx, UPS or freight forwarder from China
Duties & import taxes are prepaid at checkout — no extra charges on delivery.
SKU: N/A Category: Brand:

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Description

Overview

A round micro speaker already seated in its own sound chamber, so the cone works against a fixed air volume. Six variants span 20 mm to 40 mm frames at 4 Ω or 8 Ω and 1 W or 2 W.

Specifications

  • Frame diameters: 20, 26, 28, 30, 40 mm
  • Impedance: 4 Ω or 8 Ω
  • Rated power: 1 W or 2 W
  • Form: round frame, enclosed rear chamber
  • Variants: 20MM 8Ω2W, 26MM 4Ω1W, 28MM 8Ω1W, 30MM 8Ω1W, 40MM 4Ω2W, 40MM 8Ω2W

Purpose

Slim handheld housings have no room to mould a tuned chamber, leaving small drivers thin and buzzy. Supplying the cavity with the driver fixes back volume in a few millimetres of wall.

Applications

  • Medical beauty instruments
  • Smart home panels and doorbells
  • Intercom handsets
  • Toy and educational electronics

How to Use

  1. Check the panel opening against the frame diameter and the rear depth.
  2. Press the frame in flush and seal the gap with foam so the chamber stays airtight.
  3. Solder the leads with the same polarity on both drivers.
  4. Caution: stay within the 1 W or 2 W rating and match the 4 Ω or 8 Ω load, or the coil overheats.
  5. Raise level slowly and stop at the first rattle.

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Additional information

Weight N/A
Dimensions N/A
sort

20MM 8Ω2W, 26MM 4Ω1W, 28MM 8Ω1W, 30MM 8Ω1W, 40MM 4Ω2W, 40MM 8Ω2W

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Buying FAQ

What is the minimum order quantity?

The minimum order quantity is 100 pcs.

How does tiered pricing work?

The unit price is adjusted automatically by quantity: from 200 pcs: 10% off. The final price is confirmed in the quotation.

Can you customize this product?

Yes. We support OEM/ODM, custom wire length, connector type, colour, packing and cable assemblies. Send a drawing, sample or photo for evaluation.

How do I request a quotation?

Use the quote form on this page, WhatsApp +86 15521787718, WeChat yieying_01 or email 298273997@qq.com. We reply within one business day.

What payment methods do you accept?

We accept T/T bank transfer. Card or local payment methods may be available through our payment partner, subject to the destination and order value.

What is the lead time?

Lead time is confirmed in the quotation. For custom or OEM orders, we normally approve a sample before bulk production.

Need help with returns, warranty or spare parts? Read our After-Sales Service

Request a Quote

Fill in the form below and we will reply within 1 business day. You can also reach us on WhatsApp: +86 15521787718

Prices are shown in USD, converted from CNY at 1 CNY = 0.1496 USD (rate updated 2026-11-15 07:56)