# Large Surface Transducer with Wires - 4 Ohm 5 Watt

**Type:** Product page · **SKU:** ADA1784 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/large-surface-transducer-with-wires-4-ohm-5-watt.html ([markdown](https://core-electronics.com.au/large-surface-transducer-with-wires-4-ohm-5-watt.html.md))

Turn any surface/wall/table etc into a speaker with a surface transducer. This type of speaker does not have a moving cone like most speakers you've seen. Instead...

## Pricing

- **Price:** $48.05 (inc GST) — $43.68 AUD, exc GST
- **Quantity discounts:** 10+ $42.37 (exc GST) · 50+ $41.50 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## Description

Turn any surface/wall/table etc into a speaker with a surface transducer. This type of speaker does not have a moving cone like most speakers you've seen. Instead, a metal rod is wrapped with the voice coil. When current is pulsed through the coil, the magnetic field causes a piece of metal to expand and contract - and if it's pressed against a surface it turns the transducer into a speaker!
 
Often these size transducers are pressed up against a flat surface to turn it into a sounding board. The effect is a surprisingly clear sound that comes from the surface itself. The body of the transducer is heavy so that it can be placed with the rubber top down on a table. And for another fun trick, put the transducer at the end of a large plastic cup to point sound in a particular direction.
 
This transducer is about 45mm in diameter and has 4Ω impedance and should be run at about 5W. It's slightly larger than the [Medium Surface Transistor.](https://core-electronics.com.au/medium-surface-transducer-with-wires-4-ohm-3-watt.html) It pairs great with any of our audio amps such as the [TS2012 breakout](https://core-electronics.com.au/stereo-2-8w-class-d-audio-amplifier-ts2012.html), [MAX98306](https://core-electronics.com.au/stereo-3-7w-class-d-audio-amplifier-max98306.html), or [you can even try the 20W amplifier](https://core-electronics.com.au/stereo-20w-class-d-audio-amplifier-max9744.html), just keep the gain down so you don't overdrive the transducers. Just connect it as you would any other speaker, Adafruit even have some wires pre-soldered on.

As of July 10, 2018 this transducer no longer has a rubber pad on the transducing element. The length of the transducer arm has also increased!

## Technical Details

Dimensions:

- Height: 27mm / 1"
- Diameter: 45mm / 1.8"
- Length of Wires: 120mm / 4.7"
- Weight: 174g

Specs:

- Impedance: 4Ω
- Power rating: 5W
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/1784_datasheet_352945c36cc.pdf)

![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Guides for this product

- [DIY 10W Bluetooth Speaker - No Code Needed – How to use a Bluetooth 4.2 Audio Receiver Board with Onboard Amplifier (MH-M38)](https://core-electronics.com.au/guides/wireless/mh-m38-bluetooth-10w-speaker/)

## Videos for this product

- [DIY USB Boombox with a 4.2 Bluetooth Audio Receiver (MH-M38) - Zero Code!](https://core-electronics.com.au/videos/diy-usb-boombox-with-a-42-bluetooth-audio-receiver-mh-m38-zero-code)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/1784-02.jpg)