JBL 250Ti Bruksanvisning

JBL Høyttaler 250Ti

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Side 1/8

250Ti Jubilee Instruction Manual

Contents

The 250Ti Jubilee............................................................. 2

Placement......................................................................... 2

Speaker Wire.................................................................... 3

Connections ..................................................................... 3

Amplifier Power Recommendations................................ 5

Biased Crossover Battery Replacement........................... 6

Grille ................................................................................. 6

General Care..................................................................... 7

Service.............................................................................. 7

Specifications................................................................... 7

The 250Ti Jubilee

A definitive expression of quality and craftsmanship, the

250Ti Jubilee is the most advanced JBL loudspeaker built

for the home. No effort has been spared and no perfor-

mance factor has been overlooked in building the most

accurate loudspeaker possible, from the singular shape

of the enclosure to the design of the level controls. The

woodworking of the 250Ti Jubilee – with each hand-

detailed enclosure carefully crafted of dense fiberboard

and finished in high-gloss lacquer – complements the

engineering.

The 250Ti Jubilee will sound as good as your equip-

ment and program source will allow. Imaging is precise

and stable. Frequency response, both on and off axis, is

nearly ruler-flat to well beyond the audible bandwidth.

Distortion is held to levels more typical of fine electronics

than of loudspeakers.

Despite its sophistication, the 250Ti Jubilee is easy to

set up properly. Please read this manual thoroughly before

beginning. The instructions and information it contains will

ensure a trouble-free setup and will allow you to realize the

full potential of your system.

Placement

For the best performance, place your 250Ti Jubilee speakers

at least three feet from any walls, and equidistant from your

primary listening position (there is no designated right or

left speaker). The location of your primary listening position

is determined by the distance between the speakers; the

area created between the loudspeakers and the listening

position should ideally equal a 40- to 60-degree angle. For

example, if the loudspeakers are 2.4m (8 feet) apart, your

listening position should be 2.4 – 3.65m (8 to 12 feet) from

each speaker. To widen the area in which the best stereo

image will be perceived, turn the speaker to face the primary

listening position.

Speaker Wire

Speaker wire and interconnecting cables are an important

component in an audio system. The 250Ti Jubilee system

is internally wired with specially designed cable manufac-

tured for JBL by Monster Cable®. The same care that was

taken in selecting internal system wiring should be taken

in selecting and applying the cables that will connect the

various system components. Your 250Ti Jubilee dealer

has the experience and knowledge to recommend suitable

interconnects and speaker wire to best complement your

system.

The following gauge wires (minimum requirements) are

recommended:

Gauge Distance

1 mm2 (18 AWG) Up to 5 meters (15 feet)

1.5 mm2 (16 AWG) Up to 10 meters (30 feet)

2 mm2(14 AWG) Up to 25 meters (75 feet)

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

loudspeakers and amplifier. Since you should listen care-

fully to your loudspeakers

before

determining their final

position, you may want to arrange a temporary wiring

layout that allows you to move the loudspeakers and

experiment with their placement. After you have deter-

mined the best location for the system, permanent con-

nections may then be made using the shortest cable runs

possible. Use the same length wires for both speakers.

In some systems, the amplifier may be located near

the loudspeaker system and connected using a short

length of wire. Although such a hookup requires a

relatively long cable between the preamplifier and main

amplifier, the benefit of the short amplifier-to-loudspeaker

connection often outweighs any drawbacks.

Connections

WARNING: Be sure your amplifier is turned off before

connecting or disconnecting the loudspeakers. Making con-

nections while the amplifier is operating could seriously

damage the loudspeaker system and void the warranty. The

amplifier must also be turned off before connecting or dis-

connecting cables at the amplifier or preamplifier inputs.

Before you begin.

Examine your speaker wire carefully.

One conductor is solid, and the other is differentiated

by a ridge, printed marking or color stripe. Assign one

conductor positive (+) and the other negative (–) polarity,

and always connect the designated conductors to their

respective amplifier and loudspeaker terminals, positive-

to-positive, and negative-to-negative. This will ensure that

the loudspeakers will work together (in phase) rather than

in opposition. (Connecting the loudspeakers out of phase

will not cause damage but will result in reduced low-

frequency output and lack of stereo effect.)

Produkspesifikasjoner

Merke:	JBL
Kategori:	Høyttaler
Modell:	250Ti

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