Current Overload LEDs, High Temp Indicator

The Standby indicator will also light whenever there is a fault that triggers the protection circuitry. This may indicate one of the following conditions: DC present at the amplifier's input, a speaker impedance overload, a short circuited speaker line, or possible internal fault. If this indicator remains lit, remove power to the amplifier and check all connections. During this time, the protection circuits should automatically reset. If the Standby indicator stays lit after you reapply power, contact your Parasound Dealer, Installer or Parasound Technical Service for further advice.

Current Overload LEDs

These indicators let you know if you are exceeding the amplifier's power supply capacity. During normal operation, the bi-color operation indicators for channels 1-5 will be green and the Current Overload indicator will remain off. If any channel is driven beyond its maximum current capacity or the impedance for that channel is too low, the Current Overload indicator will light and affected channel's indicator will change from green to red.

High Temp Indicator

This indicator will light when any of the external heatsinks reach 90 degrees centigrade. If the High Temp indicator lights, it probably means that the amplifier has inadequate ventilation. Refer to page 4 for more information about proper ventilation. Once the heatsinks cool below 90 degrees, the amplifier will automatically reset.

Maintaining Your Parasound Amplifier

Your Parasound power amplifier requires no periodic maintenance and has no user serviceable parts inside. To avoid the risk of electric shock, do not remove the top cover. The amplifier's exterior can easily be cleaned with a soft cloth moistened only with a few drops of water or glass cleaner.

Main Power Fuse

There is an external fuse located within the AC receptacle that may blow as a result of an internal fault condition. This fuse protects the unit from possible damage to internal parts. Never replace this fuse with a fuse of higher value than installed from the factory. Substitution of a larger fuse may create serious stress and damage to internal parts and will void your warranty.

In Case of Trouble

If you suspect a problem with your amplifier, first turn the amp off and check all your connections. The trouble may be caused by another component or even a defective hookup cable. If you are hearing hum out of any of your speakers, turn off the amplifier and disconnect the inputs to it. If the hum goes away, it was probably be caused by your processor or one of the source components connected to it. Frequently hum in home theater systems is caused by a grounding problem with the cable TV system. Contact your cable provider if necessary to make sure the cable feed into your house is properly grounded. There are cable isolation devices available such as the Video Link #634 or the Mondial Magic specifically designed to cure this problem. In rack mounted systems, ground loops and hum can sometimes develop via the metal rack rails of the equipment rack. This problem can be solved with nylon shoulder washers available from Middle Atlantic Products (refer to rack mounting section of this manual).

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HCA-2205A specifications

The Parasound HCA-2205A is a powerful, multichannel power amplifier that has cemented its place among audiophiles and home theater enthusiasts since its release. Known for its robust performance, the HCA-2205A delivers an impressive 220 watts per channel into 8 ohms and 350 watts per channel into 4 ohms. This high power output, combined with its advanced circuitry, ensures dynamic and clear sound reproduction, making it an excellent choice for high-fidelity audio systems.

One of the defining features of the HCA-2205A is its five-channel configuration. This allows users to build a comprehensive surround sound system, supporting both home theater and music listening environments. The ability to power multiple channels from a single unit simplifies wiring and reduces equipment clutter, providing an efficient solution for audio setups.

The HCA-2205A utilizes a direct coupling design, bypassing capacitive coupling, which enhances its overall sound quality by minimizing distortion and preserving transient response. Additionally, it is equipped with a toroidal power transformer that contributes to its clean power delivery and improved efficiency. This design choice helps to keep the amplifier's performance consistent, even during demanding audio passages.

Moreover, the amplifier features an impressive signal-to-noise ratio, ensuring that the sound remains clean and free from unwanted noise artifacts. This is particularly important for home theaters where dialogue clarity and immersive sound effects are essential. Parasound's commitment to high-quality components is evident in the use of premium capacitors and resistors throughout the HCA-2205A, further enhancing its sonic performance.

Thermal management is another highlight of the HCA-2205A. The unit is designed with substantial heat sinks and ventilation to handle extended listening sessions without overheating. It also incorporates a fan-less design, providing a quiet operation that aligns perfectly with high-end audio environments.

In summary, the Parasound HCA-2205A stands out for its high power, cutting-edge design, and superior sound quality. With its five-channel capability, exceptional build quality, and advanced engineering, it offers a remarkable audio experience for both music lovers and home theater aficionados alike. Whether used in a dedicated listening room or as part of a comprehensive AV setup, the HCA-2205A continues to impress with its reliable performance and fidelity.