Mango, Sound you can taste

    [ CASE STUDY ]

    Mango

    Sound you can taste

    Industrial DesignAcousticsMechanical EngineeringElectronics & Firmware

    Mango is ONMOTIO's own speaker brand: a portable Bluetooth speaker made for the beach, the pool and the table.

    Industry

    Consumer audio, own brand

    Year

    2026

    Areas of Expertise

    • Industrial Design
    • Acoustics
    • Mechanical Engineering
    • Electronics & Firmware
    • CMF
    • Sealing & Ingress
    • Lighting
    • Rendering & Animation
    • Product Strategy

    Industrial Design•Acoustics•Mechanical Engineering•Electronics & Firmware•CMF•Sealing & Ingress•Lighting•Rendering & Animation•Product Strategy

    [ THE PRODUCT ]

    Mango

    Mango in its Mango colorway, four studio views at one scale: three quarters with the molded logo, the top and its touch zones, the back with the USB-C flap, the front

    Mango is ONMOTIO's own speaker brand: a portable Bluetooth speaker made for the beach, the pool and the table. Most outdoor speakers look like site equipment, built to survive and nothing more. Mango is a warm, tactile object you want to leave out, with 360 degree sound, and it floats when it ends up in the pool.

    A flattened cylinder, wider than it is tall, with generous edges. A woven acoustic fabric dyed through, one translucent top with no hard buttons, and a ring of light at its base that sets the object on a cushion of light rather than lighting the room.

    [ HOW IT WORKS ]

    Sealed shut,
    so it floats.

    Mango floats because nothing gets in. Two shells close at the belly on an O-ring, sealed to IP67 with no port, and every part goes into one sealed body of 1,074 cm³. Our CAD weighs it at 606 g: it settles with almost half of it above the water, top to the sky, and rides the waves.

    48 mmwaterline, from the underside

    Into the sealed tub

    606g

    1. Two shells, the tub, its clear floor, columns and webs148.5
    2. Fabric, membrane and keys, lit ring, logo, socle, feet100.6
    3. Three coaxial modules90.0
    4. Three passive radiators75.0
    5. Two 21700 cells140.0
    6. Boards, LEDs, USB-C, cables, antenna39.0
    7. Magnets and screws12.9

    + 12.9 g . Magnets and screws

    Sealed volume
    1,074 cm³
    Density
    0.56
    Waterline
    48 mm
    Above the water
    almost half

    Mango in front elevation at one scale, 14.4 cm across and 8.2 cm tall, the parts inside drawn where our CAD puts them. Masses from the CAD, part by part: each molded part by its volume and its material, each bought part by its catalog mass, 606 g in all. Sealed, the body is 1,074 cm³: a density of 0.56, and the waterline settles 48 mm above the underside, about 42 percent of the volume above the water.

    [ INSIDE ]

    Every part,
    from our own CAD.

    Inside the sealed tub, three coaxial modules and three passive radiators face out at 120 degrees around two 21700 cells and a round main board. This is our STEP CAD, version 13, part by part: turn it, take it apart, cut it open, and step through the six problems the inside had to solve.

    Mango exploded, from our CAD: the membrane and the lit ring on top, the top shell with its antenna, the three coaxial modules and three passive radiators pulled out at 120 degrees, the cells and the main board in the middle, the tub with its clear floor, then the socle, the magnets and the feet below

    01 . SEALED

    A sealed tub that still breathes

    Two shells close at the belly on an O-ring, with no port anywhere, screwed together from the top, under the lip of the membrane, so the floor has no hole at all. An ePTFE vent lets the tub breathe without letting water in, through the socle, which drains through its micro-holes. Without it, the membranes would deform as the temperature changes.

    Top shell . O-ring . top screws . tub . ePTFE vent

    Our STEP CAD of Mango, version 13, written in Python on build123d and OpenCascade: every part where the CAD puts it, lightened to about 231,000 triangles for the browser. The cut runs through the axis, front to back. Measured on the CAD: 606 g, interference checked on every pair of parts, no clash to fix.

    [ ACOUSTICS ]

    One, then two.
    It took three.

    Mango sounds the same from every side because three two-way coaxial modules face out at 120 degrees, with three passive radiators between them. We did not start there. We calculated one speaker, then two, then three, and read how much the level changes as a listener walks around the object: past 6 dB, the ear hears it.

    LEVEL AT 12 kHz-6 dBFRONT

    Level spread around Mango

    Loudest side against quietest, by frequency. Calculated. Tap a curve.

    0 dB-6-12-18-24-3002 kHz4 kHz6 kHz8 kHz10 kHz12 kHz14 kHz16 kHz-6 dB: heard walking aroundOne speakerTwo speakersThree speakersThree coaxial modulesabout 3 kHz

    Holds the 360 degrees to about 3 kHz

    One speaker, facing a radiator

    One 52 mm speaker on one side, the passive radiator facing it. From about 3 kHz the side behind the speaker falls more than 6 dB below the front: the voice and its presence change with where you stand.

    The bass

    No port, still the bass.

    IP67 leaves no opening for a bass port, so three 50 mm passive radiators do its work, with 38 cm² of surface against 17 for the modules. The one at the front carries the logo: at 60 Hz the wavelength is 5.7 m, and the bass wraps around the insert.

    Drivers
    3 coaxial modules, 38 mm + 13 mm dome
    Passive radiators
    3 x 50 mm, between the modules
    Crossover
    3.5 kHz, in the DSP
    Power
    about 40 W RMS (3 x 10 W + 3 x 3 W)
    Net volume
    685 cm³, calculated
    Tuning
    55 to 60 Hz, calculated

    A calculation, not a measurement: each driver is modeled as a piston in the wall, with the shadow of the body behind it, and the sources add in power, as in a real room. 0 dB is perfectly even all round. The plans are to scale, seen from the top, the logo at the front; the orange line around each is the level at 12 kHz, the dashed circle 6 dB down. Net volume and tuning are calculated too.

    [ COLOR AND LIGHT ]

    Each skin
    its own halo.

    The fabric is dyed through, not printed, and each colorway lights its halo in its own color, so the light matches the skin. Three colorways at launch, Mango amber, Coconut cream and Pacific turquoise: the range reads like a fruit stall, never like a color chart.

    Mango speaker in the Mango colorway, three-quarter view with the molded logo: amber, the original fabric, warm amber halo lit

    Mango

    • MangoWarm amber halo
    • CoconutWarm white halo
    • PacificTurquoise halo

    Mango, Coconut and Pacific, our studio renders of the launch colorways.

    Also explored in the brief, not kept for launch: Passion (coral), Lychee (pink) and Mojito (mint).

    [ THE TOP ]

    No hard button,
    light instead.

    The top is one translucent membrane, in one piece. At rest it is smooth and quiet; bring a hand close and it lights from inside, showing where to touch. Every key would have been one more opening to seal in an IP67 shell, and one more line across the object.

    THE LOGO SIDE

    In the middle of the capsule, at the center of the top.

    The top of Mango lit from inside, water splashing on the membrane and its zones
    Launch visual, August 2026: the lit top under spray. Water on a touch surface is the first thing this interface has to survive.

    Three routes studied

    What reads a finger through the membrane.

    Water on a touch surface can fire false touches, and Mango lives by the pool. We studied three ways to read a finger through the membrane, each with what it solves and what it costs.

    Force sensing

    SolvesReads the press itself, so water on the surface does not fire it.

    CostsA sensor layer under every zone, and a firmer press than a light touch.

    [ CONNECTED ]

    Two phones,
    one simple app.

    Mango keeps two phones connected at once over Bluetooth 5.3, so two people take turns on the music without pairing again. A 36 Wh battery charges over USB-C and plays up to 20 hours at 50 % volume with the halo off, about 16 with it on, so the light is a choice between glow and playtime.

    HaloWarm amberMango's own color
    mango

    Poolside

    2 devices82 %

    Late Light

    Poolside mix, from this phone

    1:42-1:56

    The app

    The companion app, as we designed it: three tabs, nothing to learn.

    Play, with the speaker as the hero. Halo, its three colors and a switch. Sound, with beach mode, the stereo pair and the two phones. Tap a color in the app: Mango's halo follows.

    Range

    Up to 30 m in open space.

    In open space, with a clear line of sight; walls, people and water shorten it. The antenna rides in the top shell, above the waterline.

    25 m pool10 m20 m30 mMangoPhone

    A pool deck from above at true scale, rings every 10 m around Mango.

    Together

    Two for stereo, up to three stacked.

    Pair a second Mango and the two split into left and right. Stack up to three on their magnets and they couple their bass: a fuller low end and more presence, from the footprint of one.

    In the box

    • Mango, in its colorway
    • A 1 m USB-C to USB-C cable
    • A quick start card
    • The safety and warranty leaflet

    No charger: any USB-C adapter will do.

    [ WHAT ONMOTIO DID ]

    Our own product,
    held to the same standard.

    Mango is our own brand, so we played every part a client usually brings us in for: the product, the engineering behind its claims, the brand, the launch imagery and the site that sells it. Every trade-off we advise clients on, we had to make ourselves and live with.

    In under a year, a first render became a live launch site with its pre-order page. Same team, same method, same standard as our client work.

    Our plan of Mango, cut from the CAD: three coaxial modules at 90, 210 and 330 degrees, three passive radiators between them, the front one carrying the logo, two 21700 cells in the middle.
    Jul to Oct 2026

    Brief and architecture

    Mango's brief asks for an outdoor speaker you want to leave on the table: sealed to IP67, floating, 360 degree sound, a ring of light at its base. The 360 degrees decided the architecture. We calculated how the level changes around the object for one speaker, then two, then three, and set the plan everything else follows: three two-way coaxial modules at 90, 210 and 330 degrees, three 50 mm passive radiators between them, two 21700 cells and a round main board in the middle.

    In under a year, a first render became a live launch site with its pre-order page. Same team, same method, same standard as our client work.

    Three calls that shaped it

    1. Interface

      Touch zones under a single translucent membrane

      instead ofPhysical buttons with their own seals

      Every button is one more hole to seal and one more line across the object. One membrane keeps Mango whole and lets light show the controls only when a hand comes near. Water and touch surfaces do not get along, so we studied three ways to read a finger through it.

    2. Sound

      Three coaxial modules at 120 degrees

      instead ofOne speaker facing a passive radiator

      By our calculation, one speaker facing a radiator held the 360 degrees to about 3 kHz. Three two-way modules hold the whole band within 0.6 dB, and the tub stays sealed: three passive radiators between them do the work of a port.

    3. Method

      A STEP CAD written in code

      instead ofA model drawn by hand and checked by eye

      Written in Python, the CAD runs every check at every change: the curvature comb of the profile, interference on every pair of parts, every file read back after writing. Each round of feedback is frozen as a version, sources included, v01 to v13.

    [ WHERE IT WENT ]

    From first render
    to launch site.

    Mango afloat in a lagoon, seen from above, palm shadows on the water

    In under a year, Mango went from a first render to a live launch site: product, engineering, brand, imagery and site, all from one studio. Three colorways each light their halo in their own color, two pair as a stereo set, and up to three stack on their magnets to couple their bass. The objects we design for clients get the same care. Visit mangosound.net

    Under a year
    first render to launch site
    Three colorways
    each with its own halo
    One studio
    product, brand, imagery, site

    [ THE SAME TEAM ]

    Bring us a problem
    at this stage.

    This project needed several disciplines that usually sit at several different suppliers. Doing them under one roof is what stops a good concept from arriving at a factory that cannot quote it.

    Start a project

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