FINEBox PRO™ Professional Loudspeaker Box Design Software /Automotive
Non-Linear High Power Loudspeaker Box Design Software (including Inverse FINEBox)
Highly accurate, fast and easy to use
Loudspeaker Box Design Software / Automotive
(including Inverse FINEBox)
FINEBox PRO is professional loudspeaker box design software developed for loudspeaker engineers, OEM manufacturers, and acoustic R&D teams. The software enables accurate enclosure modelling with integrated system simulation capabilities, supporting acoustic system design, port tuning, and thermal analysis for high-performance loudspeaker development.
Designed specifically for professional loudspeaker engineering, FINEBox supports the simulation and optimisation of sealed, bass reflex, band-pass, automotive, and high-power enclosure systems before physical prototyping begins.
This software is designed for professional loudspeaker engineers and manufacturers, and is not intended for consumer or hobbyist use.
Non-Linear Loudspeaker Enclosure Design Software
FINEBox PRO enables engineers to design and simulate loudspeaker enclosures with high accuracy. The software focuses on loudspeaker box design, allowing detailed modelling of sealed boxes, bass reflex systems, ABR designs, band-pass alignments, and inter-port configurations.
Engineers can evaluate low-frequency response, port behaviour, acoustic loading, and enclosure optimisation during development. System simulation capabilities are integrated to support full enclosure performance analysis.
High-Power Loudspeaker Simulation and Thermal Behaviour
FINEBox supports advanced non-linear simulation for high-power loudspeaker systems, giving engineers valuable insight into the thermal limits and performance stability of their loudspeaker designs under real-world conditions. It models:
Voice coil temperature rise
Thermal compression
Power compression
Non-linear driver behaviour
Multi-driver and multi-port interaction
Automotive Loudspeaker Box Design
LOUDSOFT’s Loudspeaker Box Design Software includes a specialized “Car” option that enables accurate cabin gain calculations for various enclosure types, including closed boxes and both inside and outside bass reflex ports.
Even sealed enclosures, when modeled accurately, can deliver well-extended low-frequency performance inside the vehicle cabin due to the natural gain effect of the space.
In the Bass Reflex Outside configuration, the port is connected to the exterior of the vehicle. This setup takes advantage of cabin gain to allow for a more compact enclosure while still maintaining powerful low-end response—ideal for space-constrained automotive installations.
System Integration with in-car measurements
Once the speaker system is installed in the vehicle, engineers can measure the acoustic response at multiple listening positions. These measurements can then be imported into FINE DSP which enables simultaneous display and real-time equalization of several responses. This integrated workflow ensures optimized system tuning tailored to actual cabin acoustics.
Inverse FINEBox Optimization Tools
Inverse FINEBox helps determine optimal Thiele/Small parameters for target enclosure volume or low-frequency cutoff (F3)
NEW FEATURED PACKAGE: Automotive Design Software (FINEBox PRO + FINE DSP).
Applications in professional loudspeaker engineering
FINEBox PRO is used globally to refine a diverse range of audio products, from:
Professional audio systems
Automotive loudspeakers
Hi-Fi systems
High-power PA systems
Headphones and micro loudspeakers
OEM development projects
helping engineers design and simulate enclosures that deliver optimal sound and reliable performance under demanding conditions.
Advanced thermal and compression modeling
FINEBox performs direct simulations of Voice Coil Temperature and Thermal Compression under high power. It supports various enclosure designs, including Closed Box, Reflex, ABR, Band-pass, and Inter-Port alignments, enabling accurate multi-driver and multi-port simulations
All non-linear TS parameters and thermal data can be imported seamlessly from FINEMotor. For added convenience, FINEBox can estimate voice coil temperatures and thermal compression effects using TS parameters and physical driver dimensions—even without FINEMotor PRO (fm3) files.
Integration with FINECone, FINEMotor, and FINE DSP
FINEBox works alongside FINECone, FINEMotor PRO and FINE DSP to support the full loudspeaker engineering workflow, covering:
Driver modelling
Enclosure design
System simulation
Acoustic optimisation
Trusted by industry leaders worldwide
Leading companies across multiple sectors rely on LOUDSOFT’s Loudspeaker Box Design Software to enhance their loudspeaker projects. These include Ford Motor Company, BOSE, and renowned audio specialists such as Kicker, Rockford, PSB Speakers,QSC Audio and Sonavox.
FINEBox PRO Loudspeaker Box Design Software /Automotive
+ Inverse FINEBox Features:
- FINEBox Box Design Software for Loudspeaker incl. Micro and PA drivers.
- Simulation of Voice Coil Temperature and Compression at High Power.
- Closed, Reflex, ABR, Bandpass and Interport alignments.
- Reflex/ABR simulation with Unit SPL, Port SPL and Impedance.
- Cone Excursion of driver/ABR and Port Velocity.
- FINEBox imports all FM3 files from FINEMotor 2014 and newer, both regular and rectangular designs.
- Display Sensitivity in two different modes:
- Max. Theoretical Sensitivity (This is very useful for Micro Speakers).
- Std. Loudsoft Sensitivity (This is the lower, more conservative Loudsoft SPL).
- Import Non-Linear Parameters and Thermal Data from FINEMotor:
- High Power VC Temperature.
- Motor Temperature.
- Power Compression etc.
- Power Compression is calculated at any power level and time.
- T/S parameters can be entered directly (i.e. from Klippel).
- Input values with extra precision for very small numbers when using Micro Speakers.
- Export simulated and spliced responses.
- Adapts to high resolution monitors with Win10 scaling and zoom.
- Simulate using multiple of the same driver.
- Simulate using multiple reflex ports/ABR’s.
- Max Flat Responses with button
- Rectangular Ports with automatic area calculation
- Loudspeaker responses with Car Cabin gain
- Cabin gain calculated from inside car dimensions
- Closed Box with Car Cabin gain
- Bass Reflex Box with outside port plus Car Cabin gain
- 4th order Bandpass Box plus Car Cabin gain
Order FINEBox PRO (incl. Inverse FINEBox) for 3,100 USD
and 775 USD for each additional licence
If you are not designing car sound or need High temperature simulations you can buy the less expensive FINEBox
FINEBox PRO + Inverse FINEBox Learning:
Questions about specs, integration or compatibility?
LOUDSOFT Promises:
FINEBox PRO™ Loudspeaker Box Design Software / Automotive
Non-Linear High Power Box Design Software (including Inverse FINEBox)
Highly accurate, fast and easy to use
Order FINEBox PRO + Inverse FINEBox now for 3,100 USD
and 775 USD for each additional licence
Not sure if this is right for your application?
Frequently Asked Questions about FINEBox PRO Loudspeaker Box Design Software
What types of loudspeaker enclosures can I design with LOUDSOFT’s Box Design Software?
LOUDSOFT’s software supports a wide range of enclosure types, including Closed Box, Bass Reflex, ABR (Auxiliary Bass Radiator), Band-pass, and Inter-Port aligned designs. It also accommodates multi-driver and multi-port configurations.
Can the software simulate thermal effects like voice coil temperature and power compression?
Yes, the software includes advanced thermal modeling features that simulate voice coil temperature and power compression at high power levels. This allows designers to predict performance and reliability under real-world operating conditions.
What is Inverse FINEBox and how does it help in loudspeaker box design?
Inverse FINEBox is a unique tool that calculates the ideal driver Thiele/Small (TS) parameters for a given box volume or target low-frequency cutoff (F3). This helps designers select or tune drivers that will perform best within a specific enclosure.
Do I need to use FINEMotor files to benefit from thermal and compression simulations?
No, while thermal data from FINEMotor files can be imported for detailed analysis, FINEBox can also estimate voice coil temperature and compression using only standard TS parameters and driver dimensions.
Is this software suitable for automotive loudspeaker design?
Absolutely. The software includes specialized features such as cabin gain calculations and supports designs optimized specifically for automotive environments.
Which companies trust LOUDSOFT’s Loudspeaker Box Design Software?
Industry leaders including Ford Motor Company, BOSE, Kicker, Rockford Fosgate, PSB Speakers, QSC Audio, and Sonavox use LOUDSOFT’s software to develop high-performance loudspeaker systems worldwide.
Can the software handle designs with multiple drivers and ports?
Yes, it supports complex configurations involving multiple drivers and ports or auxiliary bass radiators, allowing for highly customized loudspeaker designs.
