Parasound HCA-1201A owner manual Remote DC Trigger Connection, Remote DC Trigger On-Off switch

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Remote DC Trigger Connection

The Remote DC Trigger allows you to control the internal speaker relay with an external DC voltage source so you can remotely activate the speaker relay to allow the output of the amplifier pass to the speakers. The trigger circuit can be activated with an external DC source that ranges between + 9 Vdc to +12 Vdc. To properly terminate the DC trigger cable for the HCA-1201A, first determine the + DC voltage and ground conductor from the external DC source. For example, the Parasound AVC-2500 has a DC trigger that incorporates a two-conductor 1/8" mini connector. The tip of this connector is positive and the ring is negative (ground). In this case, you would terminate one end with an 1/8" mini plug and the other end with an RCA jack. The tip of the RCA jack of the HCA-1201A is also positive and the sleeve is negative. Once you have terminated the DC trigger cable, connect the RCA connector to the jack labeled Remote In on the HCA-1201A and the other end to the external DC trigger source.

Remote DC Trigger On-Off switch

When you are using the DC trigger circuitry, set the Remote switch to the On position. If you are not using the DC trigger circuit, set the switch to the Off position. Important note: The output relay will not let the signal pass to the speakers if this switch in in the on position and no DC voltage is present.

Daisy Chaining DC trigger Connections

You can "daisy chain" the DC trigger output to activate additional HCA-1201A amplifiers. Connect the Remote Out on the first HCA-1201A to the Remote In on the second HCA-1201A, and so on.

AC Power Connections and AC Grounding

Before you connect the AC cords, make sure the HCA-1201A's power switch is in the off or down position. If possible, plug your amplifier directly into an AC wall outlet. Do not connect the AC cord to the accessory AC outlet on your preamplifier because the amplifier's current draw exceeds the ratings of most preamplifier’s power switches and power cords. If you use an external AC line conditioner, make sure it can withstand the HCA-1201A's power requirements listed in the specification section of this manual.

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Contents N U a L Page Important Safety Instructions HCA-1201A Rear Panel Unpacking Your HCA-1201A Installing Your AmplifierVentilation Requirements Unbalanced Input Input Selector SwitchMinimum Speaker Impedance Precautions Making Connections to the HCA-1201ARemote DC Trigger Connection Remote DC Trigger On-Off switchDaisy Chaining DC trigger Connections Operating the HCA-1201A Power SwitchMain Power Fuse Returning your HCA-1201A to Parasound for Service USA OnlyPower Requirements Parasound HCA-1201A Specifications Continuous Power OutputPower Bandwidth DimensionsParasound Products, Inc. Rev

HCA-1201A specifications

The Parasound HCA-1201A is a high-performance, single-channel power amplifier that stands out for its remarkable power output, sound quality, and robust construction. Designed for both audiophiles and professionals, this amplifier is a testament to Parasound's dedication to delivering superior audio performance.

One of the notable features of the HCA-1201A is its powerful amplification capability. It delivers up to 250 watts into 4 ohms and 150 watts into 8 ohms, making it suitable for driving a wide variety of speakers with ease. This high power output allows for dynamic sound reproduction, enabling the amplifier to handle peaks in music without distortion or loss of clarity.

The HCA-1201A utilizes an advanced Class AB circuitry. This technology combines the benefits of Class A and Class B designs, providing low distortion and high efficiency. The result is an amplifier that can deliver a warm, rich sound while maintaining excellent dynamic range. The build quality is also impressive, with a solid metal chassis designed to minimize vibrations and enhance sonic performance.

A key characteristic of the HCA-1201A is its dual mono design, which means that each channel has its power supply and amplifier section. This reduces crosstalk and allows for better separation of sound channels, contributing to an immersive listening experience. Additionally, the amplifier features large filter capacitors to ensure stable power delivery, even during intense musical passages.

The amplifier is equipped with a host of protection features, including short-circuit protection, thermal overload protection, and DC offset safeguards. These features help ensure the longevity and reliability of the device, making it suitable for both home theater and professional audio applications.

The Parasound HCA-1201A also includes balanced XLR and unbalanced RCA inputs, providing flexibility in connecting various audio sources. The signal-to-noise ratio is commendably high, ensuring that your audio remains clear and free from unwanted noise.

In conclusion, the Parasound HCA-1201A is a powerful, high-quality amplifier that combines robust design with advanced audio technologies. Whether used in a home audio setup or a professional environment, it offers exceptional performance that appeals to serious music enthusiasts and sound professionals alike. Its unique features and reliable performance make it a valuable component in any audio system.
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