Bryston 875HT Front Panel, Fuses, Green LED normal operation, Orange LED Thermal Shutdown

Page 5

875HT EIGHT CHANNEL POWER AMPLIFIER

FRONT PANEL OF 875HT-Silver:

FRONT PANEL

POWER switch

The front panel label '875HT POWER’ is a switch used to apply or remove A/C line power to the 875 soft start circuitry. Push the switch and the 875 will initiate the start up sequence. The switch cap remains indented when circuits are on. Push the switch again the 875 will initiate the power off sequence.

LED Indicators:

Each 875 channel has a single multi-colour LED indicator to monitor the following conditions:

PUnlit LED: no power

The 875 channel led when unlit indicates no A/C mains power is present at the channel. If all channel led indicators are unlit the 875 probably needs only to be powered on. A group of 4 leds not lighting possibly indicates blown group fuse. When checking fuses, unplug the power cord. Use only the specified fuses for your operating voltage.

See page 6 for the fuse locations.

PRed LED: muted.

Each channel normally mutes momentarily during power up and power down sequences.

PGreen LED: normal operation

PFlashing Red LED: Clipping

Clipping occurs when the channel output level no longer can follow the level increase at the input (Over driven input condition). When a 875 channel is driven into clipping the channel led will change from green to red then back to green when the level is reduced ( Flashing Red ). Momentary clipping can be tolerated, however it indicates that maximum un-distorted power has been surpassed and potential speaker damage may result if over load conditions persist. Any amplifier that is constantly operated into clipping indicates a more powerful amplifier is needed for that application.

POrange LED: Thermal Shutdown

The 875 channel has thermal shutdown circuitry to prevent damage due to over heating. Should thermal shutdown occur, the both stereo channels will mute, and the channel leds will turn orange indicating this condition. When the channels have cooled to a safe operating condition the channels will return to normal operation. Persistent Thermal shutdown indicates steps need to be taken to increase airflow across the channels heat sink. (Also see installation section on ventilation).

FUSES

There are two fuse holders located at the front edge of the top panel. When checking fuses, power down the unit and disconnect the power cord. Use only the specified fuses as indicated on the label located between the two fuse holders on the top panel. See photo at top of page.

2

Page 4 Page 6
Image 5
Page 4 Page 6
Contents 875HT Important Safety Instructions Table of Contents Introduction InstallationDescription Shipping BOX & Packing MaterialFuses Front PanelGreen LED normal operation Orange LED Thermal ShutdownBalanced Input connector Single Ended Input ConnectorsInput Select Switch 875HT Rear Panel INPUT/OUTPUT ConnectionsRatings Label Typical 5.1 Home Theatre Setup Typical 7.1 Home Theatre Setup High Power 875HT Eight Channel Power Amplifier AC power input Power ControlExternal control voltage power up Local / external switch Power Bandwidth Power OutputDimensions Power Consumption &Heat LoadBryston 20 -YEAR Warranty

875HT specifications

The Bryston 875HT is a high-performance multi-channel power amplifier designed specifically for home theater enthusiasts and audiophiles seeking superior audio fidelity. Bryston, a name synonymous with quality in the audio industry, has engineered the 875HT to deliver exceptional power, clarity, and reliability, making it an ideal choice to drive a multi-channel surround sound system.

One of the standout features of the Bryston 875HT is its robust power output. This amplifier is capable of delivering an impressive 120 watts per channel into 8 ohms and 200 watts per channel into 4 ohms across up to seven channels. This ensures that even the most demanding audio environments are handled with ease, providing dynamic headroom for explosive sound effects and intricately nuanced music tracks.

The 875HT incorporates Bryston's proprietary technology, including its innovative circuitry and high-quality components. All Bryston amplifiers are built with fully discrete circuitry, which significantly enhances sound reproduction and reduces distortion. Additionally, the 875HT features a toroidal power transformer, renowned for its efficiency and low electromagnetic interference, ensuring pristine signal integrity throughout the audio spectrum.

Thermal management is another critical aspect of the 875HT’s design. It employs a large, custom-designed heat sink that allows for efficient heat dissipation, ensuring the amplifier remains cool even during extended play. This reliability not only preserves the lifespan of the components but also maintains consistent performance levels across various operating conditions.

The aesthetics of the Bryston 875HT also do not go unnoticed. With its robust, all-metal construction and a classic, minimalist design, it can seamlessly integrate into any home theater system. It is available in various finishes, allowing users to choose a look that best matches their décor.

Moreover, the 875HT is backed by Bryston's renowned 20-year warranty, a testament to the manufacturer's confidence in the durability and performance of this amplifier. The ability to connect multiple sources, along with its efficient architecture, positions the Bryston 875HT as a formidable competitor in the multi-channel amplifier market.

Overall, the Bryston 875HT exemplifies audio excellence, embodying high power, advanced engineering, and a commitment to immersive sound quality, making it a perfect centerpiece for any high-end home theater setup.
Top Page Image Contents