JAMO E 850 User manual
Item no.
69479
22.01
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Type...............................................................E 850
System..................................2½ Way Bassreflex
Woofer............................................5½ / 140 mm
Midrange.......................................5½ / 140 mm
Tweeter...............................................1 / 25 mm
Power handling*.......................140W / 200W
Frequen y range...................37 - 20.000 Hz
Impedan e................................................6 Ohm
Dimensions....................862x175x341mm
33, x6, x13,4in
Weight.......................................15,3 kg / 33,7 lb
Type...........................................................E 870
System.....................................3 Way Bassreflex
Woofer......................................2 x 5½ / 140 mm
Midrange.............................5½ / 140 mm
Tweeter..............................................1 / 25 mm
Power handling*........................150W / 220W
Frequen y range...................32 - 20.000 Hz
Impedan e................................................4 Ohm
Dimensions...................1011x175x361mm
3 ,8x6, x14,2in
Weight........................................1 ,3 kg / 42,5 lb
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Specifications subject to technical changes.
*Long / Short term power, According to IEC 68-5.
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www.jamospeakers.com
E 8
Advanced Owners Manual
3
Congratulations on your choice of the
Jamo E 8 series.
The idea behind the Jamo E 8 series,
was to make a complete series of
naturally sounding speakers for hifi
and surround sound.
You will no doubt be an ious to listen
to your new loudspeakers.
We do, however, recommend that, to
benefit fully from your investment, you
adhere meticulously to the instructions
for connection and placing in this
users guide.
The slimline cabinets all feature heavy
and resonance dead 19 mm MDF board
front baffles giving optimum working
conditions for the drivers.
On the floorstanders the cabinets are
made of 22 mm particle board and on
the small speakers of 19 mm particle
board.
The treble is reproduced by a 1"/25 mm
carefully coated te tile dome tweeter.
The tweeter features magnetic
ferrofluid and a voice coil wound of
thermosetting wire on an aluminium
voice coil former, for high power hand-
ling.
This driver is a completely new unit -
specially designed by Jamo.
The most conspicious about it is the
very wide surround that covers the
entire basket, the centerplug and the
mineral fibre reinforced pressed cellu-
lose diaphragm.
When using a centerplug, a dust cap is
no longer needed.
By removing the dust cap, radial
diaphragm break ups around the dust
cap mounting point are eliminated and
so is under-/overpressure, created
from the diaphragm e cursions, behind
the dust cap.
Construction
Introduction
Cabinet
Tweeter
Mid/woofer
4
The magnet used is 25% thicker than
conventional for this type of driver.
The reason for this, is that we wanted
to use a 15 mm long 2 layer voice coil
to achieve higher ma imum sound
pressure level and reduce distortion
caused by unlinearities in the motor
system.
This new high flow design secures less
turbulence and compared to a normal
port, it allows 5 dB higher SPL before
port noise occurs.
It is recommended to use the spikes
provided. These ensure that,
regardless of the base, the loudspeaker
will stand steady with a good mechanical
contact to the base.
If the base is hard (for instance wood or
stone), the rubber feet provided may
be mounted.
NOTE: When spikes are fitted on the
loudspeaker, never drag or push it
across the floor, as this is likely to dam-
age both carpets and floorboards.
Use of spikes (E 850/E 870)
Jamo Convex Tapered Vents.
5
Placing The placing of the speakers in the
listening enviroment have a huge
influence on the sound reproduction.
On fig. 1 and 2 we have given some
guidelines, which under normal
circumstances will give an optimum
result.
It is always recommended that you
e periment with the placement, until
you find the sound reproduction
perfect.
Fig. 1
Fig. 2
Fig. 3
Remo ing the fabric front. In general, a fabric front always has an
influence on the soundreproduction -
and it is typically the detail repro-
duction in the high frequency area that
is effected. It is therefore recommended
that the fabric fronts are removed
during serious and critical listening
situations. This will give you the
ma imum benefit of your loudspeakers.
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Connection A general rule is that the longer a cable
is the better quality cable should be
used, to avoid loss of sound quality in
the cable. Therefore: never use longer
cable than necessary, but preferably
the same length to each speaker.
The connection of speakercable is done
as follows:
1. Turn off the amplifier
2. Carefully remove appro . 10 mm of
the insulating material - beware not
to damage the conductors!
3. Twist the conductor ends
4. Turn the terminal screws counter-
clockwise until the conductors can
easily be inserted into the holes
5. Turn the terminal screws clockwise
until the cables are secured in the
terminals
To avoid damage on the amplifier,
never short-circuit the plus (+) and
minus (-) wire.
Your amo dealer can give you
advice on which cable to use.
Cable
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