Sunfire 400 ~ five, 200 ~ five manual Introduction

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CHAPTER 1

Introduction

Bob Carver, AmpliÞer Designer, Physicist

Dear Friend:

Thank you for purchasing my SunÞre Cinema Grand Þve channel power ampliÞer. I hope you enjoy it and the music it makes as much as I have enjoyed creating it for you.

This magniÞcent ampliÞer represents my very latest thinking - and my best ampliÞer design ever. I’ve spent over twenty years developing it, and cannot imagine how I could make it any better, or reÞne it any further. No matter what, its perfor- mance is, at Þrst, somewhat difÞcult to believe.

The Signature 400~Þve can produce 400 watts rms per channel into 8 ohms and 800 watts rms into 4 ohms. The 200~Þve can produce 200 watts rms per channel into 8 ohms, and 400 watts rms into 4 ohms.

The big breakthrough feature of the Cinema Grand is its uncanny tracking downconverter, which uses 18 Herculean Mosfets in the Signature 400~Þve and 12 in the 200~Þve.

The circuit boards are heavy glass epoxy, double sided, with a Faraday shield on the back side. All resistors in the sig- nal path are 1% tolerance, metal-Þlm. Critical capacitors are Þlm devices with high dielectric strength and ultra low absorp- tion characteristics. An enormous Cinema Grand power source built around a massive power transformer provides the ultimate muscle for limitless dynamics.

I could go on and on, but here’s the best part: I’ve included two kinds of outputs on the front left, right, and center :

(1)a standard voltage-source(i.e., near zero impedance) output for all typical applications and:

(2)a higher-impedance current-sourceoutput, which many prefer for electrostatic, planar magnetic, or ribbon speak- ers. Or you can biwire your system with the voltage source driving the woofer(s) and the current source driving the upper part of the system. In many cases this provides by far the best possible interface between the ampliÞer and the speaker system.

Whichever way you decide to hook up the SunÞre Cinema Grand, it will create a multilayered soundstage that is deep, wide, three-dimensional, and utterly believable. The optional current-source output can coax forth a sensuous, delicately detailed musical voice long associated with low-powered classic tube ampliÞers. (The current-source characteristic of vacuum tubes is the dominant factor in the soundstage delivery of classic tube ampliÞers.)

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User's Manual

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Contents Five Safety Instructions Read Instructions -- All the safetyContents Introduction Signature 400~Þve Cinema Grand Editions200~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 InputsOutput connections BiampingInput connections Biamping Connections Biamping with an external crossoverBiwiring Connections TPUSeries Series and Parallel speaker connectionsParallel 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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