FINE QC™ Loudspeaker QC System
End-of-Line Loudspeaker QC Test System
Highly accurate, fast and easy to use
NEW FINE QC 2026 with FINE Hardware 4
Total system: 4,000 USD
FINE QC Loudspeaker QC System
FINE QC is a dedicated Loudspeaker QC System developed specifically for fast, accurate end-of-line production testing of loudspeakers, loudspeaker drivers, microspeakers and passive crossover assemblies. Designed for loudspeaker manufacturers and OEM production facilities, it performs automated acoustic and electrical quality control in as little as one second.
Replacing subjective listening tests with highly repeatable measurements, FINE QC helps manufacturers improve production consistency, reduce warranty costs and ensure every loudspeaker leaving the production line meets its performance specification.
As the final stage of the Loudspeaker Design Workflow, FINE QC provides the confidence that every product delivered to customers performs exactly as intended.
Designed specifically for loudspeaker manufacturing
Unlike general-purpose audio test platforms, FINE QC focuses exclusively on loudspeaker production. It has been developed for manufacturers producing loudspeaker drivers, complete loudspeaker systems, micro-speakers and passive crossover assemblies where fast throughput, repeatable measurements and simple operation are essential.
Its dedicated design makes it ideal for OEM manufacturing, contract production, incoming component inspection and final end-of-line quality control.
Fast automated loudspeaker quality control
FINE QC performs complete acoustic and electrical verification in typically 0.5 to 1 second. During each production test the system measures frequency response, sensitivity, polarity, impedance, TS parameters and automatically detects Rub & Buzz defects using LOUDSOFT’s self-learning FINEBuzz algorithm.
Every measurement is automatically stored, allowing manufacturers to maintain complete production traceability while monitoring long-term manufacturing consistency and product quality.
Because all measurements are performed using dedicated LOUDSOFT hardware, results remain highly repeatable from one production batch to the next.
Designed by industry experts with decades of experience, it replaces slow, inconsistent manual testing with high-precision automated analysis. Proven by customers to be the most effective alternative to human testing, FINE QC enables clear visual feedback – what our customers describe as:
“See what you hear with FINE QC.”
The supplementary product FINE QC Viewer allows you to view AND edit all curves from the FINE QC speaker test system.
Key features and applications of our Loudspeaker QC System
Support for all audio components: Easily test speakers, drivers, micro-speakers and crossovers.
Rub & Buzz detection with FINEBuzz: Adaptive algorithm learns from production samples and improves over time.
Automated Golden Average Matching: Automatically identify reference speakers and perform acoustic pair matching.
Comprehensive data management: All test measurements are automatically saved for traceability, statistics, and continuous improvement.
Integrated hardware: USB-controlled hardware includes phantom-powered microphones, AD/DA conversion, and built-in power amplifier for simultaneous SPL and impedance testing – no switching required.
Why dedicated loudspeaker QC matters
Modern loudspeaker manufacturing requires more than simple pass/fail testing. Small production variations in suspension compliance, magnetic systems, voice coil alignment or assembly tolerances can significantly affect acoustic performance.
FINE QC identifies these variations automatically before products reach customers. Early detection reduces scrap, minimises warranty claims and helps maintain consistent production quality across every manufacturing batch.
Trusted and used by world respected loudspeaker manufacturers
FINE QC is trusted by loudspeaker manufacturers around the world to improve production efficiency while maintaining consistently high product quality. Manufacturers including Amazon, JL Audio (Garmin), Tristar, and Sinar Baja rely on LOUDSOFT measurement technology to verify loudspeaker performance before products leave the factory.
The combination of rapid testing, high measurement accuracy and intuitive operation allows production teams to achieve higher throughput without compromising quality.
Need advanced production automation?
FINE QC has been designed as a dedicated loudspeaker production testing system for manufacturers who require fast, accurate and cost-effective end-of-line quality control.
For larger manufacturing facilities requiring multi-microphone testing, automatic production line integration, TTL automation interfaces or testing of a wider range of audio products including headphones, microphones and amplifiers, LOUDSOFT also offers the advanced FINE QCX Loudspeaker and Audio QC System.
The advanced FINE QCX system test all Loudspeakers and Audio systems on fully Automatic lines. The system can use up to 3 microphones, using multi-step/sequence tests.
FINE QC Features:
- QC testing Loudspeakers/Drivers, (incl. Bluetooth +Micro) & Crossovers.
- Complete QC Test: SPL, Sensitivity, Polarity, Impedance +Rub & Buzz < 1 second.
- Automatic “Golden Average unit” and Automatic saved Statistics.
- Automatic pairing of units, also ideal for finding matching units for headphones.
- FINEBuzz 3.0 (Rub & Buzz) Test, “Best in the Industry” – Just measure some Good and Bad units.
- Average Sensitivity (0.1dB accuracy) and TS parameters.
- Reading Barcode serial number will start test.
- Automatic printing of serial number, Pass/Fail and for example sensitivity.
- All measuring is handled by the hardware giving extremely accurate measurements.
- GRAS and ICP microphones connect directly without extra preamplifiers
- Accurate low Latency Bluetooth measurements due to PC not involved in measurement.
- Directly measures crossover circuits.
- FINE QC Viewer available for checking and making setups for FINE QC.
- Drawings for 3 Test Boxes included.
- New multi-channel 19” USB-2 FINE Hardware 4
- Microphone input channel with selectable 48V Phantom power.
- Main amplifier 25W, balanced.
- Line Out. (For external amplifier if needed)
- Built-in power supply and Power switch on front.
- Same factory calibrated hardware for FINE QC and FINE R+D.
- For windows 7, 8, 10 and 11 (+64bit) with dedicated Windows drivers.
Order FINE QC 2026 Loudspeaker QC System for 4,000 USD:
Accurate loudspeaker production testing made simple
FINE QC combines fast measurement, exceptional accuracy and intuitive operation in one dedicated Loudspeaker QC System. Whether validating incoming drivers, monitoring production consistency or performing final end-of-line inspection, it provides manufacturers with a reliable and repeatable method of ensuring every loudspeaker meets specification before shipment.
Integration with loudspeaker engineering tools
FINE QC is a stand alone product used for qualify control in end of line loudspeaker production.
Our most advanced Loudspeaker and Audio QC system, FINE QCX can test all Loudspeakers and Audio systems on fully Automatic productions lines. The system can use up to 3 microphones, using multi-step/sequence tests.
FINE QC Viewer is a supplementary product that allows you to that will view AND edit all curves from FINE QC.
For headphone, ear pods and micro-speaker testing, the specific FINE QC Headphone Test System should be used.
Questions about specs, integration or compatibility?
LOUDSOFT Promises:
FINE QC™ Loudspeaker QC System
End-of-Line Loudspeaker QC Test System
Highly accurate, fast and easy to use
Order FINE QC 2026 for 4,000 USD
Questions about specs, integration or compatibility?
Frequently Asked Questions about FINE QC Loudspeaker QC System
What is a Loudspeaker QC System?
A Loudspeaker QC System is a specialised end-of-line testing system used to verify the acoustic and electrical performance of loudspeakers before they leave the production line. It measures parameters including frequency response, sensitivity, impedance, polarity and Rub & Buzz to ensure every loudspeaker meets defined production tolerances and quality standards.
How does FINE QC detect Rub & Buzz faults?
FINE QC uses LOUDSOFT’s proprietary FINEBuzz™ self-learning Rub & Buzz detection algorithm to automatically identify unwanted mechanical distortion. By analysing both good and defective production samples, FINEBuzz quickly learns acceptable production limits and provides fast, highly repeatable detection without relying on subjective listening tests.
How fast is the FINE QC Loudspeaker QC System?
FINE QC performs complete loudspeaker quality control, including acoustic measurements, impedance testing and Rub & Buzz detection, in as little as 0.5 to 1 second per loudspeaker. This enables fast, reliable end-of-line testing without reducing production throughput.
Which loudspeaker products can FINE QC test?
FINE QC is specifically designed for testing loudspeaker drivers, complete loudspeaker systems, microspeakers and passive crossover assemblies. Its dedicated design provides a simple, accurate and cost-effective solution for manufacturers focused on loudspeaker production.
Can FINE QC be integrated into fully automatic production lines?
FINE QC is designed as a dedicated manual or semi-automatic loudspeaker quality control system. Manufacturers requiring full production line automation, multi-microphone testing, TTL automation interfaces or testing of a wider range of audio products should consider the more advanced FINE QCX Loudspeaker and Audio QC System.
What measurements does FINE QC perform?
FINE QC measures frequency response, sensitivity, polarity, impedance, TS parameters and automatically detects Rub & Buzz faults during every production test. All measurements are performed using dedicated LOUDSOFT hardware to ensure fast, accurate and highly repeatable results.
Is FINE QC easy to operate?
Yes. FINE QC has been designed for production environments where speed and simplicity are essential. The intuitive user interface allows operators to perform accurate quality control testing with minimal training, while barcode support and automated test sequences help improve manufacturing efficiency.
Can FINE QC save production data?
Yes. FINE QC automatically stores all production measurements, providing complete traceability, statistical analysis and historical production records. This allows manufacturers to monitor long-term production consistency, identify trends and support continuous quality improvement.
Which manufacturers use FINE QC?
LOUDSOFT quality control systems are trusted by leading loudspeaker manufacturers and OEM suppliers worldwide. Companies including Amazon, JL Audio (Garmin), Sonance and Sinar Baja rely on LOUDSOFT technology to deliver consistent loudspeaker quality and reliable production testing.
How does FINE QC fit into the LOUDSOFT Loudspeaker Design Workflow?
FINE QC forms the final stage of the LOUDSOFT Loudspeaker Design Workflow. After loudspeakers have been designed using FINECone, FINEMotor, FINESuspension, FINEBox and validated with FINE R&D, FINE QC confirms that every production unit continues to meet the original engineering specifications before shipment.
