Bolt-on speaker mod for Reachy Mini

BoomCheeks

Give your Reachy Mini a little badonk — and a lot more bass.

Two bolt-on speaker cheeks that snap to the lower body seam of your Reachy Mini. Tool-free M3 mounts, a full-range driver in each cheek, and a center bass-cleft port. Open hardware, shipped flat-pack.

Reserve a pair See the concept

From $59 · ships flat-pack · open hardware

Reachy Mini with BoomCheeks speaker cheeks bolted on, rear view

The concept

Two cheeks. Bolted low on the body. Real drivers behind each grille, a bass-cleft port down the middle. It spins with the robot and doesn't touch the head, antennas, or base.

Exploded view of a BoomCheeks driver and enclosure beside the robot — Exploded view — grille, driver, mount plate, bolt-on shell.

Available in three sizes

Same bolt-on mount, same body seam — pick how much cheek you want.

Decor

Perky

60 mm cheek · No driver — decorative only · +70 g

Just for looks. 3D-printed cheeks, no electronics — pure desk decoration, pure vibes.

Base price

Plump

75 mm cheek · 2× 5W full-range · +180 g

The standard. Balanced bass, fits most desks.

+$10

Most bass

Thicc

95 mm cheek · 2× 8W full-range · +260 g

Maximum cheek, maximum bass. A statement.

+$20

Specs

Close-up of the two BoomCheeks speaker grilles — Perforated grille, ~1,400 holes per cheek.

Drivers: 2× 5W 4Ω full-range
Bass: Center-cleft passive radiator port
Mount: Tool-free M3, clips to stock body seam
Audio in: USB-C passthrough (Lite & Wireless)
Shell: ABS, gloss white — paintable
Added weight: +180 g
Footprint: Fits within stock 30 × 20 cm base
License: Open hardware (Apache-2.0)

Open hardware

Built to be built

Cheeks bolt on in about ten minutes with the captive M3 hardware — no soldering for the Kit and Pre-Built tiers. Want to make your own? The Maker Files tier ships the STLs and BOM under Apache-2.0, so you can print, remix, and re-skin your cheeks.

Grab the files

Reserve yours

Pick a size and a tier. This is a prototype — reserving costs nothing and charges nothing.

Perky Plump +$10 Thicc +$20

BoomCheeks Kit

$59

Flat-pack. You bolt the cheeks on yourself (~10 min).

2× 5W 4Ω full-range drivers
ABS cheek shells, gloss white
Tool-free M3 captive bolts ×8
USB-C audio passthrough cable
Sticker sheet

BoomCheeks Pre-Built

$89

Cheeks pre-assembled. Snap on and go.

Everything in the Kit
Pre-assembled enclosures
Tuned passive radiator
Matched driver pair

Free

Maker Files

Free

STLs + BOM. Print your own cheeks. Apache-2.0.

Printable cheek STLs
Driver + bolt BOM
Wiring diagram
CC-licensed cheek skins

FAQ

Does this fit both the Lite and Wireless Reachy Mini?

Yes. The cheeks clip to the shared lower-body seam on both the $299 Lite and $449 Wireless. Audio rides over the USB-C passthrough.

Will it block the 360° body rotation?

No. The cheeks bolt to the rotating body, not the base, so they spin with the robot and keep full motion.

Is this an official Hugging Face / Pollen product?

No. BoomCheeks is an independent Happy Monday Studio concept and is not affiliated with Hugging Face or Pollen Robotics.

Can I print my own?

Yes — the Maker Files tier ships the STLs and BOM under Apache-2.0.