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The CHR-70A (Gen. 3) is now up-dated 4 times since the first model was launched 4 years ago. Its usablefrequency 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 motorsub-assembly, significantly reducing the risk of over-driving damage. The CHR is now capable of being driven athigher loads making it suitable for more audio applications. Colour coded custom locking connectors are nowincluded 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 poweramplifiers. 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 connectorsThe 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.
CHR-70 Gen.3 DataREVC 7.2 OhmFo 65.40 HzSd 5.02 K mm/2Vas 5.17 LtrsCms 1.44 uM/NMmd 3.90 gMms 4.10 gBL 4.20 T*MQms 2.66Qes 0.69Qts 0.55Levc 32.44 uHNo 0.20%Spl 85.4 dBPwr 20w Nom.X max 4.3-mm 1 wayCoil Dia 20-mmMain tolerance +/- 2.5 hz on mean Fo
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