Parasound 275 V.2 manual Problems and Remedies, Unit Will Not Turn On, Background Hum or Hiss

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Problems and Remedies

Unit Will Not Turn On

•Check the setting of the Turn On Options switch. (The front panel Power button will be disabled if the switch is set to Audio or 12V). First try the Manual position and see if the unit will turn on by pressing the front panel Power button.

•If using Audio Turn on, try increasing the sensitivity of the audio trigger by setting the Turn On Option switch to the ―Quieter‖ position.

•If using Audio Turn on and you need the Model 275 v.2 to turn on at an even lower volume level, simply turn down its L and R Level controls. Try setting the level controls at 12 o’clock and see if the volume level is low enough when the amp turns on.

•Check that the AC power is live.

No Sound From the Speakers (but amp turns on)

•Ensure that the front panel speaker buttons for A and B are turned on (button pressed in).

•Try turning up the Level controls for the Left and Right channel.

•Check that input cables and speaker wires are secure at both ends (turn amp off first).

•Make sure the preamp is switched to the correct input.

•Is the Protect light illuminated? Check for excessive temperature, short-circuited speaker wires, very low impedance speaker load, and inadequate ventilation.

Background Hum or Hiss

•If you have cable or satellite TV, try disconnecting the incoming TV or satellite cable; if the hum is eliminated you will need a ―cable TV ground isolator‖ or contact your TV service provider for assistance.

•Make sure insulating shoulder washers are used if unit is rack mounted.

•Make sure all equipment is plugged in to the same AC outlet to eliminate ground loops.

•Try turning down the input Level controls.

•Move audio cables and AC cords away from each other.

•Try different routes for the audio cables and AC cords.

The Amp is Overheating or the Hi-Temp Indicator is Illuminated

•Increase ventilation around the Model 275 v.2.

•Check speakers for faults.

•Change the Speaker Load switch to the 2-3Ω setting.

•Remove any nearby external sources of heat such as other audio equipment or heaters.

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Contents Model 275 Important Safety Instructions Table of Contents Thank You for Choosing Parasound Important Warranty informationParasound Staff Keeping Records for Future Reference Unpacking Your Model 275 Placement GuidelinesVentilation Requirements Rear Panel Connections and Controls AC Mains VoltageBridged Mono Switch Front Panel Speaker Selector Lockout SwitchHigh Pass Filter Switch Right and L Left Level KnobsSetting Up the Model 275 v.2 for Bridged Mono Operation Speaker Wire Length and Gauge thicknessBridged Mono Operation Speaker TerminalsSingle 4 or 6 Ohm Speaker Single 8 Ohm SpeakerTwo 8 Ohm Speakers Manual Position Turn On Options SwitchAudio Position Automatic on/off 12V Position Automatic on/off12V Loop Out Jack Volt Input Jacks5mm and 2.5mm trigger jacks Front Panel Operation Amp is Overheating or the Hi-Temp Indicator is Illuminated Problems and RemediesUnit Will Not Turn On No Sound From the Speakers but amp turns onAre You Having Difficulty? Repair or ServiceSpecifications Parasound Products, Inc McKinnon Ave, San Francisco, CA

275 V.2 specifications

The Parasound 275 V.2 is a powerful and versatile amplifier that stands out in the crowded landscape of audio equipment. Known for its robust construction and high-quality performance, it has become a favorite among audiophiles and home theater enthusiasts alike.

At the heart of the 275 V.2 is its impressive power output. Delivering 2 x 60 watts into 8 ohms and 2 x 90 watts into 4 ohms, this amplifier can easily drive a variety of speakers efficiently. This output is achieved with a toroidal transformer and high-capacity filter capacitance, ensuring a clean and dynamic sound. The amplifier's ability to provide high current allows it to maintain performance under demanding conditions, making it a reliable choice for both music and movie playback.

One of the standout features of the Parasound 275 V.2 is its use of high-quality components. The amplifier employs discrete, low-noise, high-speed transistors for an ultra-linear frequency response, resulting in low distortion across all frequencies. Additionally, it features a full complement of protection circuitry that shields the amplifier and connected speakers from potential damage, which is a crucial aspect of long-term reliability.

The design of the 275 V.2 also places a strong emphasis on versatility. It includes both unbalanced RCA inputs and balanced XLR inputs, allowing it to seamlessly integrate into a variety of audio systems. This flexibility is particularly beneficial for users with high-end source components that utilize balanced outputs.

User-friendly features like a 12V trigger input and output enable easy integration into automated systems, while the inclusion of a remote trigger output means the amplifier can work in conjunction with other powered devices. Furthermore, the amplifier has a front-panel power switch, which can be beneficial for quick access.

Aesthetically, the Parasound 275 V.2 is designed with a modern look, featuring a sleek chassis that is both durable and stylish. It also sports an elegant, minimalist front panel, which reflects the brand's commitment to quality.

In summary, the Parasound 275 V.2 is a high-performance amplifier that combines impressive power, superior build quality, and versatile connectivity options. Its innovative technologies and thoughtful engineering make it a top contender for anyone looking to elevate their audio experience, whether in a home theater or a dedicated listening room. With its balance of reliability and performance, the 275 V.2 is a commendable choice for discerning audio enthusiasts.
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