> **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

# Surface Transducer - Large

**Type:** Product page · **SKU:** COM-19102 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/surface-transducer-large-50978.html ([markdown](https://core-electronics.com.au/surface-transducer-large-50978.html.md))

Surface transducers give you the awesome power to turn almost any surface into a speaker...

## Pricing

- **Price:** $72.20 (inc GST) — $65.64 AUD, exc GST
- **Quantity discounts:** 5+ $63.66 (exc GST) · 25+ $62.35 (exc GST) · 100+ $59.73 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 140 more in 5–11 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-19102:1` (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/COM-19102:1.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

Surface transducers give you the awesome power to turn almost any surface into a speaker. They're essentially just a speaker except instead of a cone, the coil is attached to a pad that conducts the vibration into whatever you press it against. Hook it up to an audio source and press it against the nearest table, wall or cardboard box. You can even put it against your head and play music directly into your skull (the ultimate surround sound). This transducer comes with an adhesive magnet that can be attached to the base.

- 50mm Diameter, 31mm Tall
- Weight: 0.51526 lbs.
- Power: Nominal input 10 W, Maximum input 25W
- Nominal Impedance: 4Ω±15% test@200Hz1v
- Lowest Resonance Frequency: 58Hz±20% (@ 1.0 V)
- Output Sound Pressure Level: 85±3 dB(100、400、800、12000Hz medium value @1m 10w)
- Distortion: 5% less @ 5W 1000Hz
 
 Documents - [Datasheet](https://core-electronics.com.au/attachments/localcontent/DS-18730-Surface_Transducer_-_Large_4891209a7da.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_12745.jpg)