CHR-70

70mm Fullrange drive unit
8ohm single ferrite magnet

  • 4in silver or champagne coloured magnesium alloy cone
  • Operating range to 25KHz
  • Low-profile multiform cone –broad directivity pattern
  • Long-stroke suspension with arrestor
  • Self-damping polymer basket

The CHR-70A (Gen. 3) is now up-dated 4 times since the first model was launched 4 years ago. Its usable frequency range is class leading. Depending on enclosure design, its capable of operation from 40Hz to 25-kHz.

2 developments further improve the design. An excursion limiter (arrestor) has now been fitted inside the motor sub-assembly, significantly reducing the risk of over-driving damage. The CHR is now capable of being driven at higher loads making it suitable for more audio applications. Colour coded custom locking connectors are now included in this design. Both these features are illustrated in the following page.

The driver has medium efficiency of 85.5dB at 8 Ohms making it easy to use on nearly all small to medium power amplifiers.

Many technical improvements has been done.
1 – Improved stiffer frame.
2 – New cap design with new improved fitting method.
3 – New Japanese deigned coil.
4 – New spider for improved bass.
5 – 2 colour choice (champagne gold and and brush look metal cones)
6 – Built-in overload protection (arrestor in motor sub-assembly)
7 – Dedicated custom colour coded connectors

The new CHR-70 Gen. 3 is an excellent high-end and multi-purpose driver. Its also suitable for many computer, Home Theatre, TV, and commercial A/V applications.

 
REVC7.2 Ohm
Fo65.40 Hz
Sd5.02 K mm/2
Vas5.17 Ltrs
Cms1.44 uM/N
Mmd3.90 g
Mms4.10 g
BL4.20 T*M
Qms2.66
Qes0.69
Qts0.55
Levc32.44 uH
No0.20%
Spl85.4 dB
Pwr20w Nom
X max4.3-mm 1 way
Coil Dia20-mm
Main tolerance+/- 2.5 hz on mean
Fo
 
 
 

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