SYSTEM CONFIGURATIONS
(#3
OF 4 RECOMMENDATIONS)
MULTI-MODE CONFIGURATION
.
Somewhat new to the car audio world is the “multi-mode” configuration which permits three
speakers to operate from a 2 channel amplifier.
The benefit is a “quasi-satellite/subwoofer” system
that can be constructed using passive components (i.e., capacitors and inductors) but we highly
recommend the optional “Blaupunkt Bass Bridge”
(BB-1)
to ensure easy and correct installation as
well as reliability.
Overall, this installation is simple, offers good bass response, and can be done using only one
amplifier as shown below. The amplifier must be capable of this multi-mode operation
-
you cannot
simply hook up three speakers to any 2 channel amplifier and get this performance! The amp must
be capable of sourcing and sinking large currents in order to do this.
CROSSOMR
SWITCH
SWITCH
CAUTtON:
*
Be sure that the
cmmbhed
impedance
of
your
speaker
system
-
If
lhe
coils and capacitors are not
avaibbla
h
the
vakres
listed, mils
as seen from the
ampl’er
terminala
is at
least
2
ohms. An
and capacitors
wilh
similar or
cloaa
values can be
used
without
IFP”
affecting
the
performance in
praclical
usa.
anm
d
leus
than
2
ohms will
cause
the
amp to shut down.
-
Coils and capacitors not listed in the
above
table can be
detennkwxi
using the following formulas.
L=
v(mH)
.
t=-tdF-(Hr)
R
=
Swku
Imwhnco
(ohm)
13
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