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JAMO E 770 パンフレット

Driver explanation

3.

3.1 Tweeter

The new 1" soft dome DTT tweeter chosen for the E 7 series features an extremely efficient
neodymium magnet (10 times more powerful than a conventional magnet). Because the
magnet can be reduced in size, it can be placed inside the voice coil of the loudspeaker
unit, allowing the magnet force to be concentrated around the voice coil – exactly where it
is needed.
Furthermore, the use of a neodymium magnet was required on the E 7 series because of
the limitations in space and weight for the realisation of the Decoupled Tweeter
Technology. Please refer to the exploded view of the DTT principle on page 3.

3.2 Midrange/Woofers

The 4", 5¼, 5½ and 6½" midrange/woofers found in the E 700, E 750, E 770 and the E 7CEN
feature diaphragms made of a special fibre
glass/glue compound. This material helps to
control and distribute wave modes evenly,
thereby ensuring minimal coloration and a very
transparent midrange.
The natural rubber surround we use linearises
frequency response yet further.

3.3 (Sub)Woofer

The 10" woofer features an air dried paper cone
with a massive surround allowing and a very
powerfull double magnet for high excursion
with minimum distortion.
Drive units made from woven fibre glass/glue
compound with natural rubber surround.
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