Bryston 9BSST owner manual AC power input, Power-Up Local / Auto switch

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9BSST FIVE CHANNEL POWER AMPLIFIER

REAR POWER ENTRY PANEL 1. Master circuit - breaker.

The 9BSST uses a magnetic-trip circuit breaker (1) to protect the amplifier. This switch should be ‘OFF’ when installing the 9BSST. When switched ‘OFF’ all A/C power is removed from the amplifier, including standby power.

The circuit breaker is not the day to day power switch and should be switched and left ‘ON’ after the installation is complete.Use the ‘ST POWER” switch or an external control voltage to Power-up or Power-down the amplifier.

Should the breaker trip, lower or remove the amplifier input signals. Switch the breaker to the ‘ON’ position. Then power the unit up normally. The circuit breaker must be ‘ON’ at all times for the 9BSST to operate.

2. AC power input.

This is a high current plug for the power cord receptacle. Check that the voltage rating at the right of the connector conforms with your locality. With the circuit breaker ‘OFF’ insert the power cord into the 9BSST, then plug the other

end to an approprate A/C power outlet.

3. Power-Up ( Local / Auto switch. )

A. In “Local” position either the front panel ‘ST POWER” switch or an external voltage controls the power-up of the 9BSST.

B. “Auto” is used when the 9BSST is powered from a switched power outlet. The ‘ST POWER’ switch and / or control voltage will function normally after the initial power up.

4.External control voltage power up ( Local / external switch.) A. To power-up the 9BSST using an external control voltage,

Supply a 4v to 12v A/C or DC control voltage to the ‘IN’ terminals of connector ( 5 ).

Use paired wire of 22 gauge to 18 gauge sufficient in length between the source device and the 9BSST. (see ‘W’ ) Select switch (4) to “External”. The amplifier will now power-up only when the control voltage is present (on). Immediately following power up, the control voltage will appear at the ’OUT’ terminals of connector (5) for the control of other equipment.The Removal of the control voltage ( 0v) causes the 9BSST to turn ‘off’ and the control voltage at the ‘OUT’ terminals is interrupted.

B. In the“Local” setting of switch (4) the 9BSST will ignore the control voltage, and power up only by using the front panel ‘ST POWER’ switch, or as in section 3 above. If a control voltage is present at the ‘IN’ terminals it will still be available at the ‘OUT’ terminals after the power-up sequence.

to other voltage controlled devices

figure W

Control voltage wire preparation

 

 

for screw terminal connector

 

separate 1”

1/4”

18 to 22

strip

gauge

CONTROL VOLTAGE SOURCE

wire

 

Note:

The ‘OUT’ terminals are connected to the ‘IN’ terminals once the 9BSST has powered-up.

The control current is determined by the source equipment. The carrying current of the ‘OUT’ relay is 2 amps. The 9BSST itself draws less than 2 mA from the control current when operating.

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Contents 9BSST Table of Contents Never operate the 9BSST in a vertical position IntroductionRear Panel Input / Output Connections Output binding posts Front Panel Power-Up Local / Auto switch AC power inputTOP View Rack Mounting InstructionsTypical 5.1 Home Theatre Setup 9BSST Five Channel Power Amplifier Typical THD+N Harmonic Content Typical IMD Sweep Input Impedance Power BandwidthDimensions Power Consumption &Heat LoadImportant Safety Instructions
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9BSST specifications

The Bryston 9BSST is a revered powerhouse in the realm of high-end audio amplification, offering audiophiles an unmatched listening experience through its impressive technical specifications and robust build quality. Esteemed for its pure, accurate sound reproduction, the 9BSST serves as a benchmark for solid-state amplifiers.

One of the standout features of the Bryston 9BSST is its power output, delivering 300 watts per channel into 8 ohms and 500 watts into 4 ohms, making it versatile enough to drive a wide array of loudspeakers. This substantial power ensures that even the most demanding speakers are adequately supported, capable of producing deep, thunderous bass alongside pristine high frequencies.

The amplifier is constructed with Bryston's legendary attention to detail and durability. Its all-steel chassis not only provides a rigid structure but also helps in minimizing electromagnetic interference, contributing to the overall audio purity. The 9BSST is also known for its warm, transparent sound signature, which can be attributed to its well-engineered Class AB topology. This design strikes an excellent balance between delivering high power and maintaining low distortion levels.

Moreover, the 9BSST incorporates advanced thermal management systems, including large heat sinks and robust cooling fans, ensuring reliable performance during extended listening sessions. This prevents overheating, which can adversely affect performance and longevity. In terms of connectivity, the amplifier comes equipped with balanced XLR and unbalanced RCA inputs, providing flexibility in system integration.

Bryston amplifiers are also recognized for their longevity, a feature reinforced by their impressive 20-year warranty. This commitment to quality is indicative of the brand’s confidence in their products. In addition, the 9BSST includes Bryston's unique "low-frequency cutoff" feature, which protects speakers from potential damage caused by high power surges at lower frequencies.

Overall, the Bryston 9BSST encapsulates the perfect synergy of power, precision, and reliability. Its robust engineering and exceptional sound quality make it a favorite among audiophiles and music professionals alike, solidifying its status as a top-tier choice in the high-end amplifier market. With its rich history and dedication to performance, Bryston continues to set the standard for high fidelity audio.
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