Soundstream Technologies 604 - Manual (Page 3)

@ranched This new proprietary power sup-
ply topology eliminates “power sags” during low frequency reproduction
by rapidly increasing the duty cycle, stabilizing the power supply and
allowing it to deliver the power required when reproducing low frequen-
cies. Also, greater reserve gate power is stored for low voltage condi-
tions that occur during extreme conditions.
Reduces power supply
stress by 50%. Typical designs degrade the stereo image due to phase
reversal of even-order harmonic distortion that occurs between the in-
verted channels. In the STACT design, inversion is done at the power
amplifier drive stage. Since the fully symmetrical power amplifier pro-
duces no even-harmonic distortion itself and all preamplifier circuitry is
run completely in-phase, no even harmonic distortion phase reversal
occurs.
Protection Topology provides three types of protection:
Output protection against short circuits or improper loads.
2. Ground fault detection: Shuts down the amplifier when a significant
voltage
fluctuation occurs between electrical (turn-on lead)
and battery ground.
3. Thermal Protection: Puts the amplifier into thermal rollback or shuts
the amplifier down in extreme thermal conditions.
Hawkins Bass Control provides a focused subwoofer boost at
45Hz) and routes otherwise wasted amplifier power back to the audible
bandwidth.
Harmonic Bass Alignment The 2nd and 3rd order harmonic peaks
are critically aligned to fundamental peaks at low frequencies. This
produces tighter, more accurate bass reproduction.
Drive Delay II 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.
Dynamically Optimized Power Grid . Power grid is evenly distrib-
uted between primary and secondary power supplies, providing greater
dynamics and improved RF filtering.
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All transistors are ideally located and sandwiched be-
tween the circuit board and the k to provide cool efficient ampli-
fier operation.
Differentially Balance RCA Input eliminates ground loop related noise
in the audio.
Fully Balanced DIN Input (604) for professional-quality perfor-
mance and noise cancellation. The DIN plug carries signal
information for Left and Right channels, audio ground, and 15 Vdc to
operate the Soundstream BLT BLT4 Balanced Line Transmitters and
Balanced X.0 crossovers.
Output Clipping Indicators (604) indicate clipping on the output stage
of the amplifier. Monitoring the clipping indicators allows the user to
achieve maximum SPL without clipping the amplifier.
Continuously Variable Crossover Networks: 12
variable from 65 to 220 Hz, and 24 crossovers vari-
able from 30 Hz to 120 Hz. (12 on RUBICON204)
Flexible Dual Input Level Control allows 300 to 5 V input sen-
sitivity.
Symmetrical Discrete Balanced Class A Drive Boards Auto-adjust
for linear performance while driving low impedance loads.
Removable Front Spoiler allows for stealth installation of RCA, Bal-
anced Line, Speaker and Power wiring.
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