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Mod
el S
4800
HF
- UHF
HF
- TRIM
LF
INP
UT
JBL
In
cor
por
ate
d,
Nor
thr
idg
e,
Califo
rni
a U
SA
+1d
B
+0d
B
–1d
B
–
–
Figure 10. Connecting speaker wires
using banana plugs.
(Passive Connection Method)
Mod
el S
4800
HF
- UHF
HF
- T
RIM
LF
INP
UT
JBL
In
cor
por
ate
d,
Nor
thr
idg
e,
Cal
ifo
rni
a U
SA
+1d
B
+0d
B
–1d
B
–
–
Figure 11. Connecting speaker wires
using banana plugs.
(Bi-Wire Connection Method)
PASSIVE CONNECTION
METHOD
The passive method requires one
amplifier and one set of wires.
C
onnections are made to the lower
terminals (one black, one red). Do
not remove the shorting straps.
Loosen the lower terminal caps.
Connect the positive conductor
to the right (red) terminal and the
negative conductor to the left
(black) terminal (see Figure 10
).
Refasten the terminal caps.
BI-WIRE CONNECTION
METHODS
The bi-wire connection method
requires one amplifier and two
s
ets of speaker wires. By removing
the shorting straps, connections
may be made to the individual net-
work sections using four conduc-
tors, one for each of the four termi-
nals (see Figure 11).
The optimal method of powering
the S4800 system is with two
amplifiers, one for the low-fre-
quency unit and one for the high-
frequency unit. Since each amplifi-
er drives only one speaker, this
method allows the user to select
amplifiers with the desired sonic
character for low and high fre-
quencies (see Figure 11).
NOTE: When using separate high-
and low-frequency amplifiers with
dual wires to each speaker, the
a
mplifiers must have exactly the
s
ame gain structure, or one of
them must have a level control to
adjust the gain between the two
amplifiers.
Four identical amplifiers (or two
dual-channel units) may be used,
although specialized low- and
high-frequency amplifiers offer
clear advantages. A JBL specialist
dealer can recommend the amplifi-
cation that will best suit individual
needs.
S4800 OM 10/11/05 1:51 PM Page 13