JBL Ti 2K Käyttöohje

JBL Kaiutin Ti 2K

Lue alta 📖 käyttöohje suomeksi merkille JBL Ti 2K (10 sivua) kategoriassa Kaiutin. Tämä opas oli hyödyllinen 5 henkilölle ja sai 4.5 tähden keskimäärin 2 käyttäjältä

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Ti K SERIES

M A N U A L

BETRIEBSANLEITUNG

INTRODUCTION

Excellence is an exclusive quality. It's so easy to recognize, yet so

dicult to attain.

JBL craftsmen have been involved in the art of sound for more than

a generation – signal and source, wood and fabric, transducers and

acoustics – all of it.

Today these craftsmen continue to perform to the most rigid

standards any craftsmen can submit to: those imposed upon

themselves.

JBL loudspeakers are carefully engineered instruments, pains-

takingly crafted and assembled to watchmaker standards. JBL

enclosures express the excitement of creative design; they are ele-

gant, rigid and awlessly nished. JBL transducers and electronics

oer what has been characterized by devoted music listeners as

“the incomparable JBL sound”.

JBL Ti Series loudspeakers are the ultimate expression of over 50

years experience creating loudspeakers that are the rst choice of

professionals worldwide. This experience, teamed with an extensive

development program of comparisons, experiments, testing and

listening, has resulted in loudspeaker systems displaying truly

exceptional performance.

By following the few simple suggestions contained in this booklet,

you can look forward to superb high delity reproduction that will

retain its clarity and realism year after year.

UNPACKING

The packing material of your Ti speakers has been designed to

protect the loudspeakers from any damage due to rough handling

during shipment. We strongly suggest that you keep the packing

material for future purposes, in case you are moving or your

loudspeakers should require service.

PLACEMENT

The listening room and the location of the loudspeakers within the

room aects bass level and bass response, imaging, clarity and

overall quality of sound. No other single factor has the same level of

eect on the nal sound quality. The acoustics of the listening room

are determined by the dimensions of the room, its construction and

the furnishings it contains. Rooms that have dierent dimensions

for ceiling height, length and width will give a more even, balanced

sound than rooms where the dimensions are equal to each other,

especially at low frequencies. This is important, especially at low

frequencies, as the room dimensions determine the pattern of

standing waves within the room.

The construction of the room, wooden oors, wood wall panelling,

plasterboard or brick will aect the reproduction of low frequencies,

with “soft” walls, oors and ceilings resulting in a loss of bass energy

in the room, because the low frequencies are “leaked” out. On the

other hand solid walls, oors and ceilings like brick and concrete

may cause problems by increasing the level of reverberation time at

low frequencies giving a boomy, fat sound.

At middle and high frequencies furniture, carpets and curtains all

have a damping eect that might be desirable, depending on the

actual acoustics and your listening preferences.

Ideally, there should be a reasonable balance between the

absorptive material and sound reecting surfaces. If there are two

large reecting surfaces facing each other, the “bounce” between

them will make sounds run together and the music will lack

denition. Large at surfaces should be broken up with bookshelves,

drapes, screens or tapestries.

Consult your JBL Ti Series dealer for further information regarding

the use of products or materials designed to control certain acoustic

problems caused by room size, shape or construction. In many

cases, signicant improvement in performance can be achieved by

careful attention to room acoustics.

Your JBL Ti speakers are able to give a very satisfying sound in a

great variety of listening rooms when set up in an even sided

triangle with respect to the listener. However, a careful setup

procedure will always be rewarding, and for best results we

recommend placement well away from the boundaries of the room

with preferably minimum 0.75 m (30 in) distance to the wall behind

the speakers, and 0.75-1 m (30-40 in) distance to the side walls.

A good guideline is to start by concentrating on the tonal balance of

the sound, aiming for the most neutral reproduction. When the

desired tonal character is achieved, eorts should be directed

towards the recreation of the sound stage – the imaging.

The tonal balance is roughly determined by the distances to the

walls of the room in combination witht the specic acoustic proper-

ties of the room. Placement close to walls gives a reinforcement of

lower frequencies compared to placement well away from room

boundaries. Movements of the loudspeaker to give good tonal

balance requires relatively large movements, typically 0.20-0.30 m

(8-12 in).

When a satisfying balance is found, a proper sound stage and stereo

localization is developed by smaller movements of the loudspeaker

in combination with angling towards the listening position.

The Ti speakers are supplied in mirror imaged pairs that will help

build an impressive sound stage due to their asymmetrical shape.

The Ti speakers do not come as specic left or right enclosures. We

strongly recommend experimentation in order to nd the most

satisfying overall sound. Attention to every detail of the setup will be

benecial in terms of improved sound quality.

The JBL Ti 2K should be placed on a rigid and open, preferably

heavy stand of approximately 40-60 cm (16-24 in) height. A

dedicated stand for the Ti 2K is available from your JBL Ti Series

dealer. The JBL Ti 6K and Ti 10K have provisions for the mounting of

spikes at the bottom of the speakers. The spikes can be mounted in

threaded inserts located beneath the rubber feet at the bottom of

the speakers. The benet of spikes will very often be a more

accurate, tight and dynamic bass reproduction, and a more stable

and precise stereo image. The reason behind this is that the spikes

provide a tighter mechanical coupling between the loudspeaker

enclosure and the oor, whether hardwood, concrete or brick.

Your authorized JBL dealer will be happy to help you obtain the best

possible performance from your JBL speakers.

INSTRUCTION MANUAL

NOTE: New loudspeakers require a certain amount of “exercise”

before they perform their best. A steady level of performance is

achieved after 8-12 hours of operation, depending on the nature of

the music and the level. Should you want to speed up this process

you can use inter-station FM noise as a signal during periods, where

you would normally not be listening to the speaker. Alternatively a

CD player on "Repeat" would be an appropriate signal source.

CONNECTIONS

IMPORTANT: When connecting or disconnecting loudspeakers from

an amplier, the amplier must be turned o. Making connections

while the amplier is operating could seriously damage the loud-

speaker system and void the warranty. The amplier must also be

turned o before connecting or disconnecting cables at the

amplier or pre-amplier inputs.

1 mm

(18 AWG) insulated wire is the minimum size recommended

for loudspeaker connections up to 5 meters (16 ft). Beyond this

distance, heavier gauge wire is recommended: 1.5 mm

(16 AWG)

up to 10 meter (30 ft) and 2 mm

(14 AWG) up to 20 meters (60 ft).

These recommendation are given as MINIMUM requirements, and

generally speaking, the speaker leads should be as short as

possible.

Speaker wire and interconnect cables are important components in

an audio system. With all other factors at an appropriate level of

quality the speaker cable and the interconnect cable can make

signicant contributions to the perceived sound quality. Careful

selection of cable and interconnect can add or subtract marked

shadings in tonal character. Likewise, dierent cables can have

quite a dramatic impact on the dynamic contrasts experienced by

listeners.

The same care that was given to the internal system wiring in the

JBL TI speakers should be aorded to the selection and application

of the cable that will connect the various components in your

system. Your JBL Ti Series dealer has the experience and knowledge

to recommend suitable interconnects and speaker wire to best

complement your system.

The length of the speaker wire will depend on the location of the

loudspeakers and the amplier. Since the nal positioning of the

loudspeaker will be determined by careful listening, you may want

to arrange a temporary wiring layout that will allow the moving of the

loudspeaker to experiment with placement. When the best loud-

speaker position is determined, permanent connections may be

made using the shortest cable runs possible. Both left and right

speaker wires should be the same length. In some systems, the

amplier may be located near the loudspeaker system and may be

connected using a short length of speaker wire. Although a relatively

long cable between the preamplier and main amplier is required

by such a hook-up, the benet of a short amplier-to-loudspeaker

connection will often outweigh the drawbacks.

Connections to the loudspeaker system are made at the terminals

located at the bottom of the enclosure. These terminals permit a

variety of connection methods.

The most straightforward connection is made by directly connecting

clean bare wire. This way the connection is made by stripping

8-10 mm of insulation off the loudspeaker wire and passing the bare

wire through the hole in the binding post. If the wire is too thick to

pass through the hole in the terminal in one single bundle, separate

the copper wire into three equal bundles, then pass the center bundle

through the hole in the terminal. Wrap the remaining bundles around

the binding post and twist the center stands. The knob can now be

tightened securely, and any excess wire that is not in contact with the

binding post surfaces should be trimmed to avoid short circuits.

A very convenient way of connection is the use of 4 mm banana-

type connectors, which are then, in turn, connected to the binding

posts. Bear in mind, however, that the number of contact points

should be kept to a minimum, and at the same time each contact

should be as tight as possible.

For the same reason, we recommend the use of the highest quality

spade connectors, expertly connected to the selected cables.

Spade lugs will together with the custom made binding posts

made for the JBL TI speakers, make the best possible connection

between the speaker wire and the loudspeaker system, minimizing

any contact resistance that might degrade the sound ever so slightly.

Any connection in an audio system should not be considered “good

forever”. All connections should be inspected and cleaned or

remade periodically. Frequency of maintenance depends on the

materials involved in the connection, atmospheric conditions and

other factors. Consult your dealer for specic recommendations.

It is essential that both loudspeakers in a stereo system have the

same polarity with respect to the input signal (are in “phase”). JBL

Ti speakers are designed to produce a positive pulse when a positive

signal is applied to the red input terminal.

If the driver cones of the two loudspeakers do not move in the same

direction for a given voltage at the input terminals, there will be a

lack of stereo denition and a loss of deep bass.

We recommend experimenting with the polarity of the speakers,

since recordings, program sources or power ampliers can invert

the polarity of the signal. The “correct” connection is the one that

yields the best audible results. Be sure to reverse both left and right

connections to keep the systems in polarity.

MULTI-WIRING

JBL Ti loudspeakers may also be connected to the power amplier

using several lengths of wire. The multi-wire connection method

oers a number of options and advantages.

Each section of the Ti-loudspeaker system’s internal frequency

dividing network is electrically separated and equipped with its own

pair of input terminals

This way each individual loudspeaker drive unit (and its associated

network) can be connected independently to the power amplier.

The loudspeaker system is shipped from the factory with all the

network sections interconnected by strapping bars, so that the

loudspeaker can be hooked up to the amplier by a single run of

cables.

Be removing the bars, connections can be made to the individual

network sections using two or more pair of wires (four or more

conductors) as shown in gure 1. The wires used may be of the

same type for both low, middle or high frequency sections. The

advantages are that wire eects (resistance, inductance, etc.) are

reduced, and intermodulation of low and high frequencies in the

cable is avoided. Specialized wires for low, middle and high

frequencies may yield excellent results in some systems.

In either case, the cable for the low frequencies should be as short

as possible, and the left and right cable for each section must be the

Tuotetiedot

Merkki:	JBL
Kategoria:	Kaiutin
Malli:	Ti 2K

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