> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 20W 4 Ohm Full Range Speaker

**Type:** Product page · **SKU:** ADA1732 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/20w-4-ohm-full-range-speaker-xs-gtf1027.html ([markdown](https://core-electronics.com.au/20w-4-ohm-full-range-speaker-xs-gtf1027.html.md))

Listen up! This high power 4" diameter speaker will amp up any audio project where you need loud sound! It is 4 ohm impedance, rated for 20W continuous power. (This...

## Pricing

- **Price:** $48.30 (inc GST) — $43.91 AUD, exc GST
- **Quantity discounts:** 10+ $42.59 (exc GST) · 50+ $41.71 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 03 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA1732:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA1732:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Listen up! This high power 4" diameter speaker will amp up any audio project where you need loud sound! It is 4 ohm impedance, rated for 20W continuous power. (This thing is really loud) It also has four handy mounting tabs 3 inches apart, and a grill that fits on top. The grill is to protect the cones, and is not necessary for use.

This speaker has a nice wide range of 60Hz - 24kHz, which is pretty good for a speaker this large. Originally designed for use in car doors, but we think its good for any project where you need to fill a room. Adafruit played some David Bowie through two of these speakers using [Adafruit's MAX9744 amplifier running from 12V power](https://core-electronics.com.au/stereo-20w-class-d-audio-amplifier-max9744.html) and it could easily fill 5,000 sq ft with sound. For best use, place into some sort of enclosed cabinet.

## Technical Details

Speaker (w/o cage) Dimensions:

- Diameter: 102mm / 4.0"
- Height: 53mm / 2.1"
- Mounting Tab Length: 14mm / 0.6"
- Distance Between Tabs: 77mm / 3"
- Weight: 249.4g
 

Grill Dimensions:

- Diameter: 136mm / 5.4"
- Height: 20mm / 0.8"
- Weight: 48.6g
 
- Peak Power: 120W
- Rated Power: 20W
- Impedance: 4 Ω
- Frequency Response: 60Hz - 24kHz
 
 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/1732-13.jpg)