Guitarman писал(а):
KKK писал(а):
Материал диффузора вуфера Jamо c803 неясен..http://www.jamo.com/eu-en/products/c-803-tech-talk/ где- то мелькало, что бумага+ резина.
Да, непонятно из чего он сделан. Мелькало что "из фирменного материала", типа фирма веников не вяжет
Нарылось вот
Технические характеристики Jamo C 803
Количество полос …………………………………..2
Частота раздела кроссовера ……………
2000 Гц
Мощность …………………………………………………125 Вт
Максимальная мощность ………………………..250 Вт
Чувствительность …………………………………….87 дБ
Импеданс …………………………………………………..6 Ом
Диапазон воспроизводимых частот ……….45-24000 Гц
Динамики Jamo C 803
ВЧ-излучатель 25 мм
шелк, катушка алюминий
НЧ-излучатель 180 мм
пропитанная
бумага, подвес - резина
The 1in tweeter itself features a completely newly designed lightweight silk dome,
carefully coated to achieve the optimum combination of rigidity and internal
dampening.
The magnet features a hollow pole-piece so leaving a chamber behind the dome.
The chamber is critically damped with two types of damping material to avoid
compression behind the dome and tuned to achieve a low resonance frequency at
1kHz (the normal resonance frequency for a tweeter is around 1.5kHz).
The voice-coil former is made of aluminium for optimum heat dispersal. The voice
coil is made of copper-plated aluminium wire. This is because aluminium weighs
less than copper but the copper plating is needed because of its conductive qualities.
All these features when combined allow the diaphragm to move effortlessly and
the result is a very clear and natural, detailed, dynamic and open sound reproduction
all the way to 24kHz (- 3dB).
The absolute focus when developing this tweeter was to enhance its ability to reproduce
the human voice, meaning the lower part of the treble range. Please take
time to listen to the speaker’s unusually good ability to convey vocals – we think
you’ll appreciate the excellent grip and body it exhibits.
The WaveGuide result in a uniform treble dispersion pattern from 10kHz all
the way down to the critical x-over point at 2kHz and thus secures a seamless
transition to the mid/woofer – both when listening on and off axis.
13
Mid-woofer/woofer
The woofer of the C 80 speakers features a brand new HCC (Hard Conical Cone),
made from an incredibly rigid conically-shaped fi bre-glass honeycomb sandwich.
This comprises a paper mesh between two layers of woven fi bre-glass. Aside from
the exclusive construction, the special weave ensures a uniform material thickness
over the entire diaphragm.
A loudspeaker diaphragm can be compared to a piston. To cope with the heavy
demands on the diaphragm materials’ stretching and compression properties, the
composite fi bre material is composed of a special mix of different types of fi bres
and treated with a tough hardening resin.
When its glued to each side of the paper mesh the result is a very hard and light
cone with good internal damping.
Combined with the natural rubber suspension, which effectively prevents vibrations
from travelling back to the diaphragm, the result is a well controlled diaphragm
that operates without ‘break-up’ at up to 4kHz, well beyond its working
range.
http://www.jamo.ru/upload/iblock/ea0/ea0da0afa2cdf7a7edd45ec4e4b30011.pdf