Sunfire 400 ~ five manual Rear Panel Features, AUTO/ON/OFF Switch, VDC Trigger Input, RCA Inputs

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CHAPTER 1

Rear Panel Features

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Sunfire Corporation Cinema Grand Signature 400 ~ five

 

 

 

 

 

 

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1. AUTO/ON/OFF Switch

Your Cinema Grand AmpliÞer is designed with an automatic on/off circuit.

•In the AUTO-ON position, the ampliÞer will automatically turn on if an audio signal is present at the right front or center inputs, or if it receives a 12 VDC input voltage at the trigger inputs. The ampliÞer will automatically turn off after a few seconds if the trigger voltage is removed, or after approximately 30 minutes in the absence of an audio signal.

•In the ON position, the ampli- Þer is always on, regardless of input signals or 12 VDC trigger.

•In the OFF position, the ampli- Þer is always off, regardless of input signals or 12 VDC trigger.

2. 12 VDC Trigger Input

Although the AUTO-ON signal sensing turn-on is adequate for most installations, the 12 VDC trigger inputs are offered as an optional way to turn on the ampliÞer.

The SunÞre Theater Grand II, III and IV Processors have a compatible 12 VDC trigger output (see page 11). This can be used to automatically turn on the Cinema Grand when the The- ater Grand Processor is turned on

1/8" mono mini jacks are provided for ease of installation, along with a terminal strip to allow more ßexibility for custom-wired installations. The terminal strip and both mini jacks are internally connected in parallel, allow- ing 'daisy chaining' to turn on multiple ampliÞers.

Any 1/8" miniplug mono or stereo interconnect cable will sufÞce to con- nect the trigger output of the Theater Grand preamplifer to the ampliÞer.

Do not exceed 18 VDC on this input. (CAUTION: Do not connect AC line voltage to this input!)

The voltage range for the trigger input is from 5 to 18 VDC. The input impedance is approximately 600 Ω (20 mA @ 12V).

3. RCA Inputs

Your Cinema Grand AmpliÞer has

three sets of inputs for each of the Þve channels. Two are unbalanced RCA inputs and one is a balanced XLR type.

The two RCA inputs for each chan- nel are joined together internally, and either one can be connected to the corresponding output of your pream- pliÞer. The other can be used as a daisy-chaining output, sending the preampliÞer output signal to another channel or to another ampliÞer.

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User's Manual

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Contents Five Safety Instructions Read Instructions -- All the safetyContents Introduction 200~Þve Cinema Grand EditionsSignature 400~Þve Installation AC Power ConsiderationsUnpacking CareFront Panel Features OverviewMeter Crystal BaseRear Panel Features AUTO/ON/OFF SwitchVDC Trigger Input RCA InputsIEC connector XLR InputsCurrent Source Outputs Voltage Source Outputs Current Source FusesSystem ConÞgurations Unbalanced ConnectionsBalanced Connections InputsInput connections BiampingOutput connections Biamping Connections Biamping with an external crossoverBiwiring Connections TPUParallel Series and Parallel speaker connectionsSeries Troubleshooting Guide No sound from one or more speakersAmpliÞer shuts down often or the line fuse blows often Hum is heard in your speakersOther causes of noise Poor bass performanceTurn-on and turn-off thumps Current source outputs not workingSpeciÞcations Signature 400~Þve 200~ÞveLimited Warranty Service AssistanceFive

200 ~ five, 400 ~ five specifications

The Sunfire 400 is a high-performance audio amplifier that has garnered attention for its remarkable features, advanced technologies, and exceptional sound quality. As part of Sunfire's renowned lineup, this amplifier is designed to meet the demands of audiophiles and home theater enthusiasts alike.

One of the standout characteristics of the Sunfire 400 is its impressive power output. Delivering 400 watts per channel at 8 ohms, it ensures that even the most demanding speakers are driven to their fullest potential. This translates to a dynamic audio performance that maintains clarity and detail, regardless of the volume level. Additionally, its ability to handle lower impedances makes it versatile for various speaker setups.

The Sunfire 400 incorporates advanced technologies that contribute to its superior performance. One such technology is the patented Tracking Downconverter, which allows the amplifier to achieve higher efficiency levels without compromising audio quality. This innovative design minimizes heat generation and maximizes power output, allowing for a compact form factor without the bulk associated with traditional amplifiers.

Another key feature of the Sunfire 400 is its comprehensive set of connectivity options. The amplifier includes balanced XLR inputs, RCA inputs, and speaker outputs, ensuring compatibility with a wide range of audio sources and setups. This flexibility makes it a viable choice for both two-channel audio systems and multi-channel home theaters.

The build quality of the Sunfire 400 is impressive, featuring a robust chassis that not only enhances durability but also aids in reducing unwanted vibrations. This construction is essential for maintaining audio fidelity, ensuring that the signal integrity is preserved through the entire amplification process.

Furthermore, the amplifier boasts advanced protection circuitry to safeguard both the amplifier and connected speakers from common issues such as overheating and short circuits. This reliability is crucial for those who wish to use the Sunfire 400 in extended listening sessions or during peak performance situations.

In conclusion, the Sunfire 400 stands out as an exemplary amplifier that combines power, efficiency, and sound quality. With its unique technologies, versatile connectivity, and solid construction, it’s designed to meet the needs of both casual listeners and serious audiophiles. Whether used in a home theater or a dedicated music setup, the Sunfire 400 promises a captivating audio experience that is hard to match.
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