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Mercury K62s Limited Edition 2020

K62s Limited Edition 2020

Woofer 6.5" Paper Cone, Aluminum Phase Plug

Soft dome tweeter 27mm

Neodymium Magnet

Aluminum Die Cast Basket

Impedance : 4 Ohm

Sesitivity : 91 dB

Rated Power : 90 Watts

Frequency Response : 55Hz -25Khz

  6.5  WF                        
Electrical Parameters                      
Re 3.3 Ohm electrical voice coil resistance at DC          
Le 0.321 mH frequency independent part of voice coil inductance        
L2 0.334 mH para-inductance of voice coil              
R2 0.94 Ohm electrical resistance due to eddy current losses        
Cmes 572.13 μF electrical capacitance representing moving mass        
Lces 18.27 mH electrical inductance representing driver compliance        
Res 12.52 Ohm resistance due to mechanical losses            
fs 49.2 Hz driver resonance frequency               
Mechanical Parameters                      
(using laser)                        
Mms 17.531 g mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd) 15.882 g mechanical mass of voice coil and diaphragm without air load      
Rms 2.447 kg/s mechanical resistance of  total-driver losses          
Cms 0.596 mm/N mechanical compliance of driver suspension          
Kms 1.68 N/mm mechanical stiffness of driver suspension          
Bl 5.536 N/A force factor (Bl product)              
Lambda s 0.039   suspension creep factor              
Loss factors                        
Qtp 0.464   total Q-factor considering all losses            
Qms 2.216   mechanical Q-factor of driver in free air considering Rms only    
Qes 0.585   electrical Q-factor of driver in free air considering Re only    
Qts 0.463   total Q-factor considering Re and Rms only          
Other Parameters                      
Vas 13.9716 l equivalent air volume of suspension             
n0 0.274 % reference efficiency (2 pi-radiation using Re)         
Lm 86.58 dB characteristic sound pressure level (SPL at 1m for 1W @ Re)      
Lnom 87.41 dB nominal sensitivity (SPL at 1m for 1W @ Zn)          
                           
rmse Z 2.83 % root-mean-square fitting error of driver impedance Z(f)      
rmse Hx 2.52 % root-mean-square fitting error of transfer function Hx (f)      
                           
Series resistor 0 Ohm resistance of series resistor              
Sd 128.68 cm2 diaphragm area                  
                           

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

Electrical Parameters                        
Re 3.88 Ohm electrical voice coil resistance at DC          
Le 0.031 mH frequency independent part of voice coil inductance        
L2 0 mH para-inductance of voice coil              
R2 0 Ohm electrical resistance due to eddy current losses        
Cmes 116.07 μF electrical capacitance representing moving mass        
Lces 0.1 mH electrical inductance representing driver compliance        
Res 2.54 Ohm resistance due to mechanical losses            
fs 1498 Hz driver resonance frequency               
                           
Mechanical Parameters                        
(using laser)                        
Mms 0.592 g mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd) 0.568 g mechanical mass of voice coil and diaphragm without air load      
Rms 2.007 kg/s mechanical resistance of  total-driver losses          
Cms 0.019 mm/N mechanical compliance of driver suspension          
Kms 52.41 N/mm mechanical stiffness of driver suspension          
Bl 2.258 N/A force factor (Bl product)              
Lambda s 3.507   suspension creep factor              
                           
Loss factors                        
Qtp 1.676   total Q-factor considering all losses            
Qms 2.775   mechanical Q-factor of driver in free air considering Rms only    
Qes 4.234   electrical Q-factor of driver in free air considering Re only    
Qts 1.676   total Q-factor considering Re and Rms only          
                           
Other Parameters                        
Vas 0.0015 l equivalent air volume of suspension             
n0 0.117 % reference efficiency (2 pi-radiation using Re)         
Lm 82.9 dB characteristic sound pressure level (SPL at 1m for 1W @ Re)      
Lnom 83.03 dB nominal sensitivity (SPL at 1m for 1W @ Zn)          
                           
rmse Z 10.71 % root-mean-square fitting error of driver impedance Z(f)      
rmse Hx 43.96 % root-mean-square fitting error of transfer function Hx (f)      
                           
Series resistor 0 Ohm resistance of series resistor              
Sd 7.55 cm2 diaphragm area                  

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

https://www.miragecaraudio.com/photos/1/MercuryProduct/K62/1.jpg

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