Jbl L7 Owners Manual

Ovvneds

L7

Manual

Supplement

Sped<er
Bi-Wiring

Drawing

L-A

Placement

B¡jAnplification

and

-

position

L7

top

view

Placement

L7

Drawing
optimal
loudspeakers.
speakers'
should
the center

Bi-wiring

The L7's

internal

and
designed
speaker

woofer

the
treble
networlc

alledbi-wirîng.

Bi-wiring
sonic
more
selection.

L-A and

placement

side-mounted

placed

be

of the

outer

dividing

so that

c¿n be

cable

(LF)

(HF) portions

This

can

advantages

flexibility

é,

show

L-B

L7

your

for

the

that

Note

woofers

inwards

room.

connection

separate

and

confìguration

provide several

and

power amplifier

in

towards

network

sets

attached

midrangd

dividing

the

of

considerably

Panel

are

of

to

is

g'

Drawing

L-B

-

L7

woofers

position

side-mounted

face inward

front view

3'

Reduction

The majority
between
devoted
bass.
amp's
woofers.
through
magnetic
expands

an amplifierand

to

fn frLæ"60%

power

When current

a wire,

fìeld

and

intermodulation

of

of current

reproduction

the

or more

is destined

produces

it

(EMF) which

collapses

at

flowing

speaker

of

an

of

for the

flows

a

a rate

is

Drawing

Drawing

Drawing

Dra¡ving

L-C - One-Amp Bi-Wire

-Two-Amp

L-D

Stereo tube amp

Bi-Wire

L-E - Three-Amp Bi-Wire

L-F - Four-Amp Bi-Wire

equal to that of the
complex frequency
lf

a single speaker wire must con-

music's
components.

duct the full musical frequency
spectrum, this preponderance
low frequency information

of

can

interact with or modulote hþh
frequencies. The resulting
intermodulotion can

create audible
changes to treble even before it
reaches your loudspeakers.

By

using separate conductors
for high and low frequencies
(drawing L-C),

unwanted treble

modulation is avoided. Bass

flows through

one,

treble

through anothen
Frequency-optimized cables

Having the opportunity to use
separate HF
you

to employ conductors best

LF cables,

and

allows

suited to each frequency range. As
previously noted, most
power

ís destined for

woofers,

so upon first consider-

amplifìer

your

L7's

ation, ¡t would make sense to use
veq/
and

thick

tjrinner

wire

wire

for LF

for

HF

connections

connections.

Howeve[the very

fact

that
treble is hþher in frequency, means
it is actually more sensitive to the
type and
frequencies
attenuation
called skr:n effedt.

gauge

are
from a

of

prone

wire

to

used. Hþh

phenomenon

High quality

speaker interconnect wires

minimize skin
large number

very low oxygen content2.

with
Optimall¡you
phile interconnects

LF conductors.

and
ydirr

budget

quality

best

high frequency

effect by

of thin conductors

should

use audio-

for both HF

Howeven if

intervenes,

speaker

cables

connections and

plan to add better bass
Amplifier

Bi-wiring
option of using
power amplifiers
L7 loudspeakers
mono

Using

(drawing L-D)

sonic
convenience
standpoing
intermodulation
right channels,

input and

of

devoted

are
amps
upgrade

lEeoors

of a wire, nthertJæn
dæ less resbance
indvidul
area) b more imporarn
drUgtess

2O"¡6en
The,less o46ør, the

cornpoea of
and tas slffinrcre
o4rgeftft€e hi$ corìductlvÇ copper
h

çecftil

flexibility

also allows

separute stereo

for left and rþht

or even

power amplifiers.

two stereo amplifiers

can not only add

improvements but

as well.

From

dual amplifiers reduce

between

since a complete set

power

supply circuits

to each speaker. Dual

provide an e:Ny

also

you

path:

acaallyflo,,ralorgfie

conducors

is a common

aecoot¡ic ouó

geakerwire

can start out

irside. The nrcre s.¡ráce aleâ,

to o-rrrern Tlns üre number cf

(conmbutírgin<reased

beaer con&ctivity. Zp cord

o46en contentúnn dre

orærmostatorm

únn thejrindividt¿l

imgrrÇ in copper wire.

¡itó

employing

use the

for

the

cables laæn

you

the

four

'

upgrade

a sound

left

and

power

skin

b

(El?C)

copper

(OF{Q

used

a