FINE QC™ Speaker Production Test

FAST Speaker & Headphone Audio Test System

End-of Line QC test system for (Active-) Loudspeaker Systems and drivers, headphones & drivers and microspeakers. FINE QC includes the effective self-learning Rub & Buzz method FINEBuzz, which is proven as the best in the industry by replacing human testing of micro speakers in China, and will do a complete test including Rub & Buzz in 0.5-1 second.

Other features are Automatic Golden Average Speaker finding, Acoustic Pair matching, Auto-Saving of all measurements for Statistics and USB controlled FINE Hardware with Phantom mic + AD/DA and Power Amp providing simultaneous SPL & impedance Test w/o switching


Demo Video


New FINE QC / Headphone which can include Noise Cancel Test>>

Download FINE QC Manual (3.7 Mb)


  • Loudspeaker QC (End of Line / incoming)

  • Active / Bluetooth / Wireless Speaker QC

  • Headphone QC

  • Micro Speaker QC


- SPL (with individual tolerances)
- Sensitivity (Average in band)
- Polarity +/-
- Rub & Buzz
- Impedance:

​Complete Test of all above < 0.5 second

Download FINE QC Features (0.4 Mb)
  • Complete QC Test: SPL, Sensitivity, Polarity, Impedance and Rub&Buzz

  • Automatic "Golden Average Unit"

  • Automatic pairing of units, also ideal for finding matching units for headphones

  • Third gen. Enhanced Rub&Buzz Test, "Best in the Industry"

  • Automaticly saved Statistics

  • Rub&Buzz Setup - Just measure some good and bad units

  • SPL with mouse adjustable Pass/Fail Limits + SPL Level meter (VU meter)

  • Average Sensitivity (0.1dB accuracy)

  • T/S parameters

  • Bluetooth Speaker testing

  • Reading barcode serial numbers will start test

  • Automatic printing of serial number, Pass/Fail etc.

  • Drawings for 3 test boxes included

  • Intuitive and easy setup < 1 hour

  • Danish quality microphone optimized for production environments

  • 19" FINE Hardware with USB, Phantom Microphone input + 25W amplifier

  • For Windows 7, 8 and 10 (+64bit)

QC Preprod Average
Batch / Golden Average
Golden Average No 8 found
Auto Good /Bad Rub & Buzz
TS Paramters

LOUDSOFT  FL1 Microphone, made in Denmark.
Very stable pre-polarized condenser microphone for 48V Phantom power.


Download FL1 Data Sheet (0.2 Mb)



FINE Hardware with microphone input
Optional 48V Phantom Power
FL1 Microphone connects without preamp
Built-in 25 W amplifier
USB control

LOUDSOFT - Agern Alle 3 - 2970 Horsholm - Denmark - Phone: (45) 4582 6291 - Fax: (+45) 4576 5708 - E-mail: