Lowther EX Series


 


Lowther EX Series´Â ±âÁ¸ÀÇ µå¶óÀ̺ê À¯´Ö¿¡¼­ º¸´Ù ¹ßÀüµÈ »õ·Î¿î ÇüÅÂÀÇ ±¸Á¶¿Í ¼º´ÉÀ» Áö´Ñ Ãֽеå¶óÀ̺ê À¯´ÖÀÔ´Ï´Ù.
EX SeriesÀÇ ¸ðµ¨µéÀº Lowther»çÀÇ Æ¯ÇãǰÀÎ Hi-Ferric'¢â Rare Earth Neodymium¸¶±×³×Æ®¸¦ »ç¿ëÇÏ¿´À¸¸ç,  ±âÁ¸ÀÇ ¸ðµ¨¿¡´Â ¾ø¾ú´ø acoustic chamber¸¦ ä¿ëÇϰí ÀÖ½À´Ï´Ù.
ÀÌ acoustic chamber´Â ÄÜ ¾î¼Àºí¸®ÀÇ ÀüÈÄ ¿Õº¹¿îµ¿½Ã ¹ß»ýµÉ ¼ö ÀÖ´Â À½¾ÐÀÇ ºÒ±ÕÇüÀ» ¿Ïº®È÷ ¹æÁöÇØ Áܰú µ¿½Ã¿¡ º¸´Ù ź·ÂÀÖ°í ´Ã¾îÁüÀÌ ¾ø´Â ÀúÀ½°ú ÁßÀ½À» Á¦°ø ÇÕ´Ï´Ù.

 

 

 

 

 


 

 

 

 

 

 

 

 

 

 

EX2

EX3

EX4

 

 

 

 

 

Overall diameter 23.2 cm 23.2 cm 23.2 cm
Overall Depth 8.5 cm 8.5 cm 8.5 cm
Depth from Rear of Mounting Frame 6.4 cm 6.6 cm 7.9 cm
PCD Mounting Centres 20.8 cm 20.8 cm 20.8 cm
Baffle hole cut-out 19 cm 19 cm 19 cm
Magnet Ring Diameter 7.6 cm 9.0 cm 9.0 cm
Voice coil diameter 3.9 cm 3.9 cm 3.9 cm
Voice coil impedance (options) 4, 8 or 15 ohm 4, 8 or 15 ohm 4, 8 or 15 ohm
D.C. resistance Zmin 7.2 ohm 7.2 ohm 7.2 ohm
Nominal Power Handling 100W 100W 100W
Emission piston area Sd 0.021M² 0.021M² 0.021M²
Air gap width 900 microns 900 microns 900 microns
Air gap height 5 mm 5 mm 5.5 mm
Magnet type 'Hi-Ferric'¢â Rare Earth Neodymium 'Hi-Ferric'¢â Rare Earth Neodymium Hi-Ferric'¢â Rare Earth Neodymium
Flux density (1 Tesla=10,000 gauss) 1.75 Tesla 2.1 Tesla 2.2 Tesla
Diaphragm Twin-paper Twin-paper Twin-paper
Frequency response 30 Hz - 20 kHz 30 Hz - 22 kHz 30 Hz - 22.5 kHz
Nominal air resonance 36 Hz 36 Hz 36 Hz
Sensitivity at 1m/1kHz/1watt 97 db 98 db 99 db
Maximum voice coil travel ± 1 mm ± 1 mm ± 1 mm
Suspension compliance Cms 993.888 uM/N 993.888 uM/N 993.888 uM/N
Total Q Factor Qts 0.260 0.245 0.220
Electrical Q Factor Qes 0.22 0.22 0.22
Mechanical Q Factor Qms 3.11 3.11 3.11
Equivalent Volume Suspension Vas 0.015M³ 0.015M³ 0.015M³
Effective Moving Mass Kg. 0.0115 0.0115 0.0115
Shipping weight 3.0 kg 3.0 kg 3.5 kg *