Parasound HCA-1205A owner manual Level Controls, Main Power Fuse, If All Else Fails

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Level Controls

Each channel has its own rear mounted "set and forget" input level control. Your amplifier sounds best with these level controls set to maximum, where they are effectively out of the audio signal path. However, if your preamplifier has very high gain, and its volume control cannot track properly for left- right channel balance near its minimum position, it may be necessary to reduce the input level control settings on the amplifier. When using the HCA-1205A in a THX installation, each level control must be set at maximum to correspond to 0 dB THX reference level.

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 mentioned in the rack mounting section of this manual.

If All Else Fails...

Call your Parasound dealer or Parasound Technical Service. We can suggest other diagnostic tests you can easily perform. If we determine that your amplifier should be returned to Parasound or an Authorized Parasound Warranty Center for inspection and possible servicing, call Parasound for the location of a warranty center near you. If you choose to send it to Parasound, contact us to obtain a Return Authorization (RA) number. You will be asked to repack the unit in its original packaging including the additional outer box for protection during transit. The Return Authorization number must be clearly marked on the outer carton only. You should ship the unit by UPS with adequate insurance and a copy of your purchase receipt to validate your ownership. Units that arrive without your specific Return Authorization number, without a suitable shipping carton or with evidence of improper internal packing must be refused. We do not accept collect shipments. After repair under warranty, the unit will be returned to you via prepaid UPS. In the case of a non-warranty repair, contact us and we will advise you of the repair charges before you ship the unit to us. The same packing and RA number requirements apply.

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Contents N U a L Figure #1 HCA-1205A Front and Rear Panel Drawings Table of Contents Important Safety InstructionsImportant Safety Instructions Power Switch Figure #2 HCA-855A Front and Rear Panel Drawings Unpacking Your Amplifier Home Theater Configurations and Input Connections Minimum Impedance PrecautionsPolarity AC Line LED Automatic Turn OnStandby/Normal Operation LEDs Current Overload LEDsMain Power Fuse Level ControlsIf All Else Fails Power Bandwidth Parasound HCA-1205A Specifications Continuous Power OutputDimensions Power RequirementsParasound HCA-855A Specifications Continuous Power Output Parasound Products, Inc

HCA-1205A specifications

The Parasound HCA-1205A is a highly regarded audio power amplifier known for its exceptional performance and versatile applications. Designed to deliver high-quality, reliable power to a range of audio systems, the HCA-1205A is particularly favored by audiophiles and home theater enthusiasts.

One of the standout features of the HCA-1205A is its five-channel configuration, allowing it to effectively drive multiple speakers while maintaining a compact footprint. Each channel is rated at 120 watts into 8 ohms and can deliver up to 200 watts into 4 ohms, providing ample power for a wide range of speaker types and impedances. The amplifier's robust power output ensures dynamic sound reproduction across all audio frequencies, translating to a compelling listening experience.

The HCA-1205A employs advanced circuit design, including a high-current, Class AB topology. This design strikes a balance between efficiency and sound quality, delivering clean, distortion-free amplification even during demanding playback scenarios. The amplifier incorporates large power supplies and heavy-duty output transistors, which contribute to its ability to drive low impedance loads without compromising performance.

Another notable feature of the HCA-1205A is its thermal management system. Equipped with large heat sinks and an advanced cooling design, the amplifier remains cool even during extended use, ensuring reliability and longevity. The inclusion of short-circuit and thermal protection circuits further enhances safety, preventing damage under adverse conditions.

Connectivity is made convenient with various input options, including RCA connections and balanced XLR inputs. The amplifier's rear panel features a range of output binding posts, allowing for flexible speaker connections and easy integration into existing audio setups. Additionally, the HCA-1205A supports bridged operation for increased power output in specific configurations.

Parasound is known for its commitment to quality, and the HCA-1205A is no exception. Its build quality is robust, featuring a sturdy chassis that minimizes vibration and interference. The amplifier's aesthetic design, with a sleek finish and informative front panel, fits seamlessly into any modern audio or home theater environment.

In summary, the Parasound HCA-1205A is a powerful and versatile audio amplifier that stands out due to its exceptional sound quality, advanced technological features, and reliable performance. Whether for a robust home theater setup or a high-fidelity audio system, the HCA-1205A is an excellent choice for those seeking to elevate their listening experience. Its combination of power, efficiency, and flexibility solidifies its status as a preferred amplifier among audio enthusiasts.
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