JAMO R 909 Bedienungsanleitung
1
OWNERS MANUAL
Jamo R 909
4
english
5
CONTENTS
Introduction 6
Placement 7
Listening position 8
Spikes 9
Connecting 10
Front and back fabric covers 11
Cleaning 12
Specifications 12
The scope of the warranty 13
6
INTRODUCTION
Welcome to the exclusive circle of Jamo R 909 owners! This manual will give you a
quick overview of how to set up your speakers in your room.For more in-depth in-
formation about the technologies please refer to the R 909 technical description.
The first word of advice. After setting up your R 909s for the first time, please allow
yourself a couple of days to listen to them before you start fine-tuning the sound.
This will serve two purposes. Firstly, you will get a sense of what these speakers
sound like. Secondly, it will give time for the speakers to run in: the tonal quality of
this design changes slightly after the first couple days of playing music.
Please remember the guidelines in this manual are only recommendations. There
are no hard and fast rules about setting up a pair of speakers as unique as these.
When you get down to fine-tuning their performance in your room don’t be afraid
of experimenting: any speaker will sound different when moved a few inches. Feel
free to change the speakers’ positions and move them around the room to deter-
mine your best listening position and sound.
Always rely on your own judgement to determine what sounds best.We do...
Enjoy!
7
PLACEMENT
As a starting point, we suggest you initially position the R 909s 3 feet from the back
wall and 4 feet from the side wall.
Angling the speakers 10 degrees to the back wall will reflect the generated sound
off your back and side walls,which will give you the acoustic impression of a much
larger room.
Also remember that a dipole speaker emits virtually no sound from the side. You
can take advantage of this trait to cancel reflections from the side wall by varying
the toe-in angle.
3 ft
4 ft
10˚
8
LISTENING POSITION
To find the best listening position, place yourself at a 30 degree angle from each
speaker. Doing so means that you will be seated at about the same distance away
from the speakers as the actual gap between them. The benefit of this is that the
direct radiating sounds from each speaker will cross each other at a point behind
you.
IF YOUR ROOM…
a) doesn’t allow you to get the speakers the required distance from the back
and side walls or…
b) has highly reflective surfaces (ie. glass windows or bare plastered walls)
or…
c) still doesn’t sound quite right
…we strongly recommend that you damp your room’s critical surfaces.This can be
done by the simple expedient of adding curtains, furniture,bookshelves and so on.
A damped surface is almost always preferable to a hard reflective surface.
30˚
30˚
9
SPIKES
After the initial placement of the speakers it’s now time to screw in the spikes. Be-
cause of the weight of the R 909, we recommend that you gently lay it on one side
and screw in all four spikes together. Before you do this, however, be sure to place
a couple of thick towels or similar underneath the side of the speaker.This will pre-
vent accidental scratching to the surface of the R 909 and, equally importantly, will
avoid you putting a rather large dent in your floor.
After screwing in the spikes,we recommend you fit them with the hard rubber feet
and the indented metal washers we’ve supplied. These will spare the floor from
damage and allow you to gently bring the speaker to its vertical position. Once
upright simply adjust the spikes to give optimal support.
Floor surfaces vary considerably so we have given you 3 different choices when it
comes to spiking options.You can keep the hard rubber feet on the spikes, rest the
spikes on the four indented metal washers, or place the spikes directly onto the
floor. Always choose the option that gives the most stability for your speakers in
your domestic environment.
Using the spikes without the hard rubber feet or indented metal washers will give
the very best support and sound quality. If you want to spare your floor surface
from being punctured however, the rubber feet or indented metal washers are a
good compromise.Sonically, there’s really very little difference between them - use
whichever one suits your floor surface better.
A warning:be careful when using the spikes with the indented metal washers - you
don’t want to get your finger trapped between the two!
Whichever spiking option you choose, avoid“walking” the speakers if you need to
move them to a different position… especially on hard wood floors!
2
1
10
CONNECTING
SINGLE-WIRING
For single-wire connections, the terminal jumpers should be attached as shown in
the illustration.
BI-WIRING
If you’d like to use a bi-wiring arrangement, make sure you remove all the terminal
jumpers before you connect up your loudspeaker cables.
BI-AMPING
In a bi-amped system, make sure you remove the terminal jumpers before con-
necting up your cables. The top pair of terminals drive the tweeter while the pair
underneath drive the bass and midrange units.
If you choose this option, we recommend you use identical amplifiers for both ter-
minals.
AMPLIFIER
AMPLIFIER 1 AMPLIFIER 2
AMPLIFIER
11
FRONT AND BACK FABRIC COVERS
The front fabric covers have been designed to have minimal influence on the sound
quality. However,for critical listening we would advocate that you remove them.
The rear fabric covers have no influence on the sound quality. It’s entirely up to you
and your aesthetic preference whether you have them on or not.
When removing and putting on the front and back cov-
ers,however, make sure you do so gently,in order to pre-
vent scratching or marking.
We recommend placing your hands level with the two
top hooks on the front cover when lifting it, for optimal
balance.
Please note that the front fabric cover, like the speaker itself, isn’t of conventional
design.When putting the cover on, make sure all four metal hooks on its frame are
resting securely on all four screws. If not placed correctly, it could fall off and per-
haps even be damaged.
If you choose to remove the front cover for longer peri-
ods of time, the four screws onto which you mount the
cover can be unscrewed,for a more attractive aesthetic
appearance.
12
CLEANING
Please use a dust-free cloth to clean the R 909. It is also possible to use a slightly
damp cloth for more stubborn marks.
Under no circumstances should you use any kind of cleaning agent on, or in close
proximity to, these speakers.
SPECIFICATIONS
Type.............................................................................................................................................. R 909
System.......................................................................................................................... 3-way dipole
Woofer (In / mm)....................................................................................................2 x 15 / 2 x 380
Midrange (In / mm)...........................................................................................................5½ / 150
Tweeter (In / mm).................................................................................................................... 1 / 25
Short term power (W).......................................................................................................Min 800
Sensitivity (dB/2.8v@1 m)........................................................................................................... 89
Frequency range (Hz).................................................................................................. 25 - 30.000
Impedance (Ohm)............................................................................................................................4
Crossover frequencies (Hz) ................................................................................. 250 and 2.000
Weight (Kg / lbs)........................................................................................................... 63.1 / 139.1
Dimensions (HxWxD mm / in) ......................................................................1276 x 488 x 541
................................................................................................................................. 50.2 x 19.2 x 21.3
12
It’s also worth noting that the rear fabric cover is mainly held in place by magnets.
When mounting it make sure that you gently push the two fabric cover holders into
the corresponding brace holes.
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