Soundstream a4 ユーザーズマニュアル

 (Speaker Load Adapting   Subwoofer 

 

new dual function technology currently operates in two different ways 

different models. In subwoofer applications the power supply tracks the

incoming audio signal and increases or decreases its own voltage level

to mirror the input. This design results in enormous low impedance, low
frequency stability and maximum efficiency, since no power is wasted

maintaining an unnecessarily high voltage level in the power supply.

High Level Input with terminal block connector will accept a speaker
level input. This allows the user to hook this amplifier up to any factory
headunit.

Auto Turn On allows the amplifier to turn on without the use of a re-

mote turn on wire, when the amplifier is using the high level inputs.

 Protection Topology provides three types of protection:

1. Output protection against short circuits or improper loads.

2. Ground fault detection: Shuts down the amplifier when a significant
voltage 

 Volts) fluctuation occurs between electrical (turn-on lead)

and battery ground.
3. Thermal Protection: Puts the amplifier into shutdown in extreme

thermal conditions.

Remote Wire Output provides a 

 volt output to turn on another

amplifier.

Line Level Output will allow the use of another Soundstream amplifier

to run the front speakers, while still retaining the factory head unit. This

option is only available when the high level inputs are used.

 provides a focused subwoofer boost 

at 45Hz) and routes otherwise wasted amplifier power back to the au-
dible bandwidth.

 The 2nd and 3rd order harmonic peaks

are critically aligned to fundamental peaks at low frequencies. This pro-
duces tighter, more accurate bass reproduction.

 Amplifier section powers up 2 to 3 seconds after the

power supply eliminating turn-on pops. Turn off process is reversed:

Amplifier section turns off first, followed by the power supply.

 All transistors are ideally located and sandwiched be-

tween the circuit board and the 

 to provide cool efficient ampli-

fier operation.

Differentially Balanced RCA Input eliminates ground loop related
noise in the audio path.

 low pass filter that is se-

lectable at 60, 80 or 1 

Symmetrical Discrete Balanced Class A Drive Board auto-adjusts

for linear performance while driving low impedance loads.

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