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

  • Finds All Rub & Buzz (including micro drivers)
  • Automatic "Golden Average Unit"
  • Automatic Good / Bad Learning: Just measure some good and bad units
  • SPL + Impedance at the same time
  • Left - Right (L - R) Headphone difference with tolerances
  • Simulteneous Left + Right Headphone test
  • Automatic Daily Average 
  • FINE Hardware with 25W Amplifier + 48V Phantom
  • Available Danish Condenser Microphone
  • For Windows XP or 7 / 8 (incl. 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: