Khadija Sardar Available for work

Work Industrial Design

Prisma

PRISMA is a portable, multifunctional speaker designed for fitness and dance instructors, combining powerful sound, customizable RGB lighting, and hands-free voice amplification.

Two Prisma speakers with RGB-lit edges in front of large glowing PRISMA lettering
Type
Industrial Design
Scope
  • User Research
  • Ideation
  • Branding
  • CAD
  • Prototyping
  • Packaging
  • App Design

User Research

Zumba instructors lead energetic group classes, using music to motivate participants while giving verbal instructions. They constantly move and demonstrate exercises, often needing portable audio equipment and clear voice projection.

Sketch of a dance instructor wearing a headset microphone, leading a class
Sketches showing a loud speaker, an instructor shouting over it, and resulting voice strain

  1. Loud Music
    Energetic music creates a loud environment

  2. Increased Vocal Effort
    Repeated shouting can lead to vocal fatigue and discomfort

  3. Voice Strain
    Instructors have to speak louder to be heard over the music

Key Insights

  • Surveys User preferences and behaviors
  • Reddit Real-world experiences
  • Instructor Insights First-hand observations
  • Clear, Powerful Sound
  • Audible Instructions
  • Portability
  • Less Manual Adjustment
  • Long Battery Life

Ideation

Sheet of concept sketches exploring many portable speaker forms
Refined sketches of the triangular speaker with its handle

Branding

Montserrat
Source Sans 3
Prisma moodboard: disco ball, marble sculpture, dancers, cassette tapes and neon light

CAD

CAD renders of the speaker: three-quarter view with handle, top view and both triangular end caps

Making of Functional Prototype

  • Printed speaker housing panels and handle laid out on a workbench
  • Handle frame and perforated speaker shell before assembly
  • Speaker end cap next to a can of Krylon Fusion satin black spray paint
  • Sewing the speaker mesh cover on a sewing machine
  • Fitting the circuit board and speaker drivers into the housing
  • Battery pack and two speaker drivers mounted in their enclosures
  • Testing the LED strip inside the translucent handle frame
  • Spray-painting the mesh cover
  • Mesh cover wrapped over the triangular speaker body
  • Speaker body fully covered in black mesh
  • Wiring the electronics into the speaker shell
  • Electronics, battery and drivers assembled inside the housing

Final Functional Prototype

Final Prisma prototype in black with a white frame, front three-quarter view Final Prisma prototype seen from the end cap with its handle Final Prisma prototype standing upright on its triangular end
Prisma prototype glowing with RGB light against a purple backdrop
Prisma prototype lit with RGB LEDs on a blue backdrop Underside of the Prisma prototype glowing with RGB light Prisma prototype end view with LEDs glowing
Render of Prisma with its handle up and RGB light strip
Exploded view of Prisma showing handle, mesh, frame, LED strip, drivers, battery and circuit board

Packaging

Prisma packaging: flat dieline, kraft sleeve, printed box and the speaker inside its packaging

App Design

Prisma companion app screens for speaker connection, lighting and music playback
Prisma speaker glowing on the floor of a dance studio during a class
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