Cube

Objects · Lisbon, Portugal · 2026

A compact coaxial smart speaker with built-in Wi-Fi and Bluetooth.

Coaxial bookshelf speaker Cube in a record shelf
Close-up of the speaker Cube
Category
Objects
Location
Lisbon, Portugal
Year
2026
Status
Completed
Materials
Oak plywood
Client
Estro Sound
Photos
Studio Rühlmann

After the Super Horn, David from Estro Sound and I teamed up again to build a small, modern bookshelf speaker with a classic silhouette.

This is what Estro has to say about it:
"The smallest speaker in the Estro range — but no less considered for it. A 4" coaxial driver delivers a point-source sound image in a compact cabinet small enough to live on a shelf, desk, or kitchen worktop. An onboard smart amplifier handles WiFi, Bluetooth, AirPlay, and Spotify Connect, so it connects to everything."

Speaker Cube in a record shelf with turntables on top
Close-up of the speaker Cube