Soundstream Technologies HRU. 4, HRU. 2 owner manual Design Features

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 to reproduce 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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