4. XLR Inputs

If your preamplifier has XLR outputs, connect them to these XLR inputs. These balanced connections offer superior noise rejection com- pared to the unbalanced RCA inputs, particularly for long cable runs.

The female XLR inputs are wired as follows:

Pin 1 is ground

Pin 2 is positive (hot)

Pin 3 is negative (cold)

Balanced connections pass the input signal along two conductors. If there is any external noise and inter- ference passing into the audio lines, both conductors will receive the same amount of noise. This noise is then rejected in the balanced input stage of the Theater Grand Amplifier.

5.Current Source Outputs and:

6.Voltage Source Outputs

The front left and front right chan- nels each have a Voltage Source output and a Current Source output. The remaining channels have Voltage Source outputs only.

The Voltage Source outputs have a source impedance of approximately zero ohms. The Current Source outputs have a source impedance of approximately one ohm.

The top post of each binding post pair is the positive output, and con- nects to the positive post of your speaker. The bottom post of each pair is the negative, and connects to the negative post of your speaker. The posts can accept bare wire, spade terminals, and dual or single banana connectors.

According to your musical taste, you may select the Current Source for driving electrostatic, planar magnetic or ribbon speakers. For cone based systems, use either. For a biwired sys- tem, use the Current Source for mid- range and treble drivers, and use the Voltage Source for the subwoofer(s). These are suggestions only. By all means, please feel free to experiment with other wiring options. (See page 14.)

NOTE: The Current Source output is a Voltage Source modified to yield an impedance of one ohm. This cor- responds approximately to a vacuum tube amplifier's output impedance and constitutes the dominant factor in the soundstage delivery of classic vacuum tube power amplifiers.

7. Current Source Fuses

Each Current Source output has an in-line fuse to protect your speakers. If one ever opens, there will be no output to that speaker.

Unplug the amplifier from the AC mains power supply if you ever have to change

afuse.

8.IEC connector

The amplifier comes with a detach- able Linecord which attaches here. Make sure it is firmly pushed in place. Connect the other end to an AC outlet which is properly configured for the type of plug and has the correct volt- age for your model.

9. Power Switch

Press the top edge of this power switch to turn the amplifier on. The power LED will turn blue.

The auto/on/off switch (1) controls how the amplifier turns on (signal sensing, 12V trigger, etc.).

CHAPTER 1

10. AC Line fuse

If this fuse fails, replace it with the exact same type and current rating.

Note: Always unplug the power cord from your AC outlet before removing the fuse.

Gently turn the fuse carrier counter- clockwise to release the fuse.

11. LED Dimmer

This switch allows you to set the brightness of the front panel power LED, from low, medium and high. Ad- just this to match the brightness of the other components in your system.

User's Manual

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Sunfire TGA-7201, TGA7401 XLR Inputs, Current Source Outputs Voltage Source Outputs, Current Source Fuses, IEC connector
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TGA-7201, TGA-7401-230, TGA-7201-230, TGA7401 specifications

The Sunfire TGA series stands as a testament to cutting-edge audio engineering, with models like the TGA7401, TGA-7201-230, TGA-7401-230, and TGA-7201. Each of these amplifiers is meticulously crafted to cater to the needs of audiophiles seeking unparalleled performance and robustness in their sound systems.

The Sunfire TGA7401, for instance, boasts a powerful output of 400 watts per channel into 8 ohms, making it an excellent choice for driving demanding speakers. This model employs Sunfire’s patented Tracking Downconverter technology, which provides high efficiency while minimizing distortion. The low-profile design of the TGA7401 allows it to fit comfortably in AV racks without sacrificing operational power, ensuring that it can deliver high-quality sound in any setup.

Similarly, the TGA-7201-230 is designed for those who appreciate compactness without compromising audio fidelity. With its 200 watts per channel output, this amplifier is ideal for smaller setups or as an addition to a home theater system. The TGA-7201-230 features advanced thermal management systems that keep the amplifier cool during extended use, increasing durability and performance reliability.

The TGA-7401-230 presents a hybrid of power and flexibility, offering both balanced and unbalanced inputs. This feature allows users to integrate the amplifier seamlessly into various audio setups, whether it be for home theater or high-fidelity stereo listening. The inclusion of a sophisticated signal path and upgraded components ensures that the audio performance is always crystal clear, with an impressive dynamic range.

On the other hand, the TGA-7201 rounds out this impressive lineup with its combination of efficiency and streamlined features. It maintains a low total harmonic distortion rate, ensuring that listeners receive accurate sound reproduction, which is essential for both music and cinema experiences. The compact design enables it to be used in various environments, while still delivering the power necessary for an exhilarating audio experience.

Overall, the Sunfire TGA series exemplifies high-performance audio technology, bringing forth amplifiers capable of delivering clear, powerful sound. With their robust build quality, innovative technologies, and impressive specifications, models like the TGA7401, TGA-7201-230, TGA-7401-230, and TGA-7201 provide a premium listening experience for any audio enthusiast. Whether you are building a home theater or simply seeking to upgrade your audio setup, the Sunfire TGA series stands ready to enhance your listening experience.
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