Soundstream Technologies HR 4 - Manual (Page 4)

DESIGN FEATURES
RUBI™(Rapid-Use Branched Impulse) This new proprietary power supply
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 then reproducing low frequencies. Also, greater reserve
gate power is stored for low voltage conditions that occur during extreme
conditions.
STACT™ (STabilized Apex Current Topology) 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 inverted
channels. In the STACT design, inversion is done at the power amplifier drive
stage. Since the fully symmetrical power amplifier produces no even-harmonic
distortion itself and all preamplifier circuitry is run completely in-phase, no even
harmonic distortion phase reversal occurs.
Trident™ 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
(>5 Volts) 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 - Fully adjustable subwoofer equalization circuit
providing frequency and boost(“Q”) adjustment for optimum subwoofer
performance. A frequency tracking subsonic filter protects woofers from
potentially harmful low frequency information and maximizes output in a usable
range.
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