Job Description

Acoustical Engineer II

On-site, Mundelein, IL

At Trulli Audio, we are revolutionizing the way you experience sound through our patented ThinDriver technology. Our mission is to empower people to Listen Out Loud and bring vibrant, immersive sound into spaces where it was never possible. We design loudspeakers that are untethered from the constraints of power, weight, and space, opening new avenues for creative deployment.

We are a small, focused engineering team building a portfolio of professional and prosumer loudspeaker products. We constantly test, build everything in-house, and care deeply about how things sound, how they look, and how they hold up in the field.

We are hiring an Acoustical Engineer II to report to our Head of Acoustics and take ownership of complex loudspeaker design work across our growing product portfolio. This is a hands-on, design driven role for someone who has experience with the CAD, prototyping, and testing loop for past product cycles and is ready to drive that work end to end.

You will share responsibility for the acoustic design of new products from concept through production. Your day to day will span enclosure design, transducer evaluation, custom driver development, and DSP voicing. You will partner with mechanical, electrical, software, and supply chain teammates, and you will help shape how Trulli’s acoustic engineering function operates as the company scales.

We are an American Manufacturer! All Product Development and Assembly is done in the USA!

• Own acoustic system design. Drive enclosure topology, port and passive radiator tuning, Thiele Small parameter analysis, and overall acoustic performance using our measurement tools and simulation programs. Translate product targets into engineering designs that hit them.

• Develop custom drivers with supply partners. Work directly with multi-national transducer manufacturers to specify KPI targets for incoming components. Coordinate prototype rounds, characterization, and design iteration.

• Develop and refine DSP voicing. Build and maintain voicing profiles across our portable products, including EQ, dynamic range processing, limiting, and crossover topology selection. Close the loop between measurement and how the product sounds.

• Correlate and analyze product data. Conduct and supervise acoustic, mechanical, and destructive testing in collaboration with the broader team. Provide design feedback that connects simulation to prototype data using digital twin analysis.

• Document and communicate the work. Capture design decisions, simulations, prototype builds, and test results in clear, well-organized reports. Communicate trade-offs and recommendations effectively across engineering, product, and supply chain.

• Help build the acoustics function. Contribute to lab fixtures, measurement standards, internal tooling, and technical documentation that the rest of the team can build on. Mentor and trade ideas with other engineers as the team grows.

• Stay sharp. Keep current on transducer technology, materials, DSP platforms, measurement standards, and industry best practices for professional and prosumer loudspeaker systems.

• Bachelor's degree in acoustics, physics, electrical or mechanical engineering, or a related field. Equivalent professional experience considered.

• 3 to 5 years of hands-on experience designing loudspeaker systems for commercial release, with a portfolio of shipped or near shipped products that include enclosure, transducer, and voicing work.

• Strong working knowledge of electrodynamic transducer behavior, Thiele Small parameters, and standard enclosure topologies (sealed, ported, bandpass, passive radiator, horn loaded).

• Practical fluency with at least one simulation tool (MATLAB, COMSOL, or equivalent) and a willingness to learn new software tools required for this role.

• Experience developing DSP voicing profiles using one or more platforms (e.g. DSP Concepts, SigmaStudio, TI, or custom firmware frameworks).

• Strong fluency with acoustic measurement hardware and software for impedance, frequency response, distortion, and large signal characterization.

• Sharp analytical instincts and excellent attention to detail when recording, analyzing, and interpreting acoustic data.

• Track record of working effectively across multi-disciplinary teams (mechanical, electrical, software, manufacturing, and supply chain).

• Experience working directly with offshore or domestic driver manufacturers on custom transducer programs.

• Familiarity with Klippel dBLab and/or Listen Inc Soundcheck measurement systems and associated standard test protocols.

• Hands on experience with battery powered or fully active loudspeaker systems and the unique constraints of integrated amplification, DSP, and power management.

• Experience designing for mid to high volume production, including DFM and DFA inputs and tolerance analysis.

• Experience contributing to phase gate engineering processes and structured product development cycles.

• Strong ear for quality sound, with the ability to identify loudspeaker defects, distortion artifacts, and voicing issues by ear.

• Familiarity with 3D CAD tools such as Fusion 360 or SolidWorks for design coordination with mechanical engineering.

• Active membership or participation in AES, ALMA, or similar professional communities.

• Real ownership of acoustic design across a growing product portfolio, working alongside a small but dedicated acoustics team.

• A well-equipped acoustics lab and the latitude to explore new and inventive ways of producing sound.

• Competitive base salary commensurate with experience, $110,000+, plus full health, dental, and vision benefits, retirement plan, and paid time off.

• On site work at our Mundelein, IL facility, where all our operations are located.

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