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o0.e
REFERENCE POWER SUPPLY DESIGN
The REFERENCE amplifiers employ an extremely efficient unregulated
pulse-
width modulated oower
SUDDIV.
REFERENCE amolifiers from Soundstream
are rated at 12
;olts
but
&e’designed
to take advantage of the additional
voltage available when the vehicle is running. The two major advantages of the
unregulated power supply are:
l
e0.e
6
dB/OCTA
VE
PASSIVE CROSSOVER CHART
l awesome dynamic power capabilities
l added continuous power with higher voltages (see chart below)
Because of the dynamic properties of most music, all audiocomponents should
be able to react accordingly. Thanks to their unregulated power supplies, the
REFERENCE amplifiers can comfortably exceed their rated power for dynamic
portions of the music.
I
PASSIVE AND ELECTRONIC CROSSOVERS
Your REFERENCE amplifier is unique in its ability to switch between Coherent
StereoTM
,
Bridged Mono, and Mixed Mono output mode. The REFERENCE
ampliiiers are capable of driving a complete subwoofer and satellite system in
the Mixed Mono conliguration. However,
lor
lowest distortion, maximum
output, and best sound quality, we recommend that you
use
an electronic
crossover and multiple channels of amplilication.
If a single REFERENCE amplifier is to drive a
subwoder
and satellite system,
passive high and low pass crossovers will be necessary. Use the charts on
pages 7 and
8
to determine the values of the crossover components.
6
dB/octave
hiah
nass
KEY
L = high quality (DCR
<
1 ohm) inductor/coil
C = non-polarized 50
v
(or greater) capacitor
2 ohms
L
c
4.1 mH
3.1
mH
2.4
rnH
1.6 rnH
I,2
mH
0,s
mH
0,5 mti
0.41 mH
0.31 mH
0,25
mH
D.16
mH
D.08
mH
+
4 ohms
L
C
8.2
mH
500
uF
6.2
rnH
4W
FF
4.7
mH
300
PF
3.3
rnH
2W
pF
2.4 mH
150
pF
1.6 mH
100
pF
1
.O
mH
58
pF
0.82
mH
50
)rF
0.62
mH
39pF
0.51
mH
33 pF
0.33
mH
22PF
0.16fIlH
1OPF
7
8 ohms
L
C
16
mH
12
mH
IomH
6.8
mH
4.7
mH
3.3
mH
2.0
mH
1.6
mH
1.2
mH
l.OmH
0.6.9
mH
0.33
mH
250
WF
200
PF
150
)LF
100)1F
75 PF
50 VF
33 VF
26 VF
20
)rF
16
,,F
10~F
5
PF
6