Reference Power Supply Design - Soundstream Reference Series 604 Installation Manual

REFERENCE POWER SUPPLY DESIGN

The REFERENCE604 employs an extremely efficient unregulated pulse-width
modulated power supply. Like the rest of the REFERENCE amplifiers from
Soundstream, the 604 is rated at 12 volts but is designed to take advantage of
the additional voltage available when the vehicle is running. The two major
advantages of the unregulated power supply are:
increased dynamic power capabilities
l
added continuous powerwith higher voltages (see chart below)
l
Because of the dynamic properties of most music, all audio components 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.
4 Ohm Stereo Watts
0
14.4 volts
12 volts
SETTING THE
HIGH POWER/HIGH CURRENT SWITCH
The High Power/High Current switch
two types of amplifiers: either producing maximum power at higher impedances
(perfect for satellites) or at lower impedances (usually with multiple subwoofers).
The circuit operates by selecting a set of power supply voltage rails best suited
to your particular application. One is
impedance applications while the other is lower voltage designed to provide
more current. Unlike other amplifiers, Soundstream's REFERENCE amplifiers
can be configured to drive virtually any impedance and make maximum power!
To determine the setting for your application, follow the chart below:
4 n stereo
(8 CJ Bridged) (4 R Bridged) (2 n Bridged) (I R Bridged)
7 5 x 4
High Power
(250 x 2)
Watts
37.5 x 4
High Current
(75 x 2)
Watts
*NOTE: The High Power/High Current switch affects both pairs of channels of
the REFERENCE604.
OTHER COMMENTS:
the REFERENGE604 to be one of
allows
higher voltage 'tap" optimized for high
a
1 n Stereo
1 5 0 x 4 n/a
1 2 5 x 4
(300 x 2)
125x4 1 5 0 x 4
7 5 x 4
(300 x 2)
(250 x 2)