From design to validation— intuitively.

A speaker enclosure design tool that brings design, comparison, and listening into one flow.

Intuitive, straightforward design
Bilingual support
200+ driver presets
Ad-free
Speaker Designer frequency response and design diagnostics interface Speaker Designer driver preset selection interface Speaker Designer Listening Preview interface

ABOUT SFR

WE ARE SONICFLOW RESEARCH

Design and analysis tools for thinking, testing, and comparing—starting with sound.

Speaker design has long lacked tools that let people intuitively simulate a range of enclosure configurations and compare them in one continuous workflow. SFR | SONIC FLOW RESEARCH was created to address that gap.

Instead of spending time on complex operations or calculations themselves, designers can choose a driver and enclosure, adjust conditions, and validate the result as they work. Compare the graphs, hear the difference with your own audio, and stay focused on design decisions.

Starting with the knowledge developed through acoustic design, we will extend these tools beyond sound—toward designing and testing flow, connections, and systems. SFR will keep expanding practical tools in which every step and every piece of information connects naturally.

Born in Japan. Built for Creators.

KEY BENEFITS

A simpler way to design.

01

INTUITIVE

Focus on design, not complexity.

02

REAL-TIME

See changes as you make them.

03

COMPARE

Compare ideas instantly.

04

ONE-TIME

No subscription. No usage-based fees.

ENCLOSURE DESIGN

Test ideas as you design.

Use your own audio to hear how each design change affects the result.

Speaker Designer

A browser-based design tool for adjusting conditions, reviewing results, and comparing changes with your own audio.

DRIVER PRESETS

200+

Current and legacy drivers included.

Choose a preset and start designing quickly.

ENCLOSURE TYPES

8

Eight enclosure configurations

Explore different enclosure configurations and compare the results as you design.

Closed Box Bass Reflex Double Bass Reflex Triple Bass Reflex Back-Loaded Horn TQWT Resonance Pipe Kelton (Bandpass)
  • Frequency response, impedance, and design diagnostics
  • Compare design conditions and results
  • Listening Preview with your own audio
User Manual PDF (日本語 / English)

PRODUCT EXPERIENCE

See the design flow.

PRICING

One simple purchase.