Crown Audio STUDIO AMPLIFIER owner manual Stereo Two-Channel Operation, Bridge-Mono Operation

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Studio Reference I & II Professional Studio Amplifiers

making connections, selecting sources and controlling output levels. The load you save may be your own! Crown is not responsible for damaged loads that result from carelessness or deliberate overpowering.

CAUTION: Always disconnect the AC power and turn the level controls down when making or break-

ing connections. This practice reduces the chance of loud blasts that can cause loudspeaker damage.

Studio Reference amplifiers provide three operating modes: Stereo, Bridge-Mono and Parallel-Mono. Ste- reo mode provides standard two-channel operation; Bridge-Mono provides a single channel with double the output voltage of Stereo mode; and Parallel-Mono mode provides a single channel with double the output current of Stereo mode. These modes can be selected using the stereo/mono switch on the back panel. Each mode is wired differently, so be sure to note any spe- cial wiring requirements for the mode you will be using.

3.3.1 Stereo (Two-Channel) Operation

Stereo mode installation is very intuitive: input chan- nel 1 feeds output channel 1, and input channel 2 feeds output channel 2. To put the amplifier into Stereo

mode, turn it off, slide the stereo/mono switch to the center position, and properly connect the output wiring as shown in Figure 3.5. Each output channel has two sets of binding posts to make it easier for you to con- nect multiple loudspeaker cables to each channel. Be sure to observe correct loudspeaker polarity (see Fig- ure 3.5) and be careful not to short the outputs.

CAUTION: In Stereo mode, never tie an amplifier’s outputs together directly, and never parallel them with the output of another amplifier. Such connec- tions do not result in increased output power, but may activate the protection circuitry to prevent overheating.

3.3.2 Bridge-Mono Operation

Bridge-Mono mode is used to drive loads with a total impedance of at least 4 ohms (see Parallel-Mono if the load is less than 4 ohms). Wiring for Bridge-Mono mode is different from the other modes and requires special attention. First, turn off the amplifier. Then se- lect Bridge-Mono mode by sliding the stereo/mono switch to the right (as you face the back panel). Both outputs receive the channel 1 input signal, but chan- nel 2 is inverted so it can be bridged with channel 1. Do not use the channel 2 input or signal quality will be

MIXER

STUDIO REFERENCE AMPLIFIER

BRIDGE-MONO MODE

CHANNEL 1

DO NOT USE

THE CHANNEL 2

INPUTS.

CH-2

FX

PUSH

PUSH

ReferenceS T U D I O

STEREO

PARALLEL BRIDGE

MONOMONO

CAUTION: TURN OFF AMPLIFIER

BEFORE CHANGING THIS SWITCH!

Fig. 3.6 Bridge-Mono Wiring

–

+

LOUDSPEAKER

CH-1

DO NOT USE

THE BLACK

BINDING

POSTS.

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Contents Studio Reference Box 1000, Elkhart, Indiana TelephoneThree Year Full Warranty Crown Audio Division Technical Support Group Magnetic FieldContents Studio Reference II Minimum Power Matrix Studio Reference II Maximum Power MatrixStudio Reference I Power Draw, Current Draw Balanced and Unbalanced Phone PlugsUnpacking Instructions Studio Reference I AmplifierFeatures WelcomeFacilities Level ControlsReset Switch Do not use the channel 2 input in either mono modeInstallation MountingCooling Wiring Stereo ModeStereo Two-Channel Operation Bridge-Mono OperationMeters, switches, etc. to the Bridge-Mono output Mode until the wiring is removed especiallyBoth sides of the line must be isolated from Tortion and excessive heatingInput Connection CableShielded Twin-leadInput Wiring Tips Solving Input ProblemsUse Good Connectors Output ConnectionHigh frequency oscillations can cause your amplifier AC Mains Power Affect the output power available from the amplifierAvailable from most electrical supply stores Additional Load ProtectionPrecautions IndicatorsOperation Indicator Status Amplifier Condition Protection SystemsStandby Mode OdepActivate its DC / low-frequency protection circuitry Amplifier’s transformer thermal protection cirControls Circuit BreakerFilter Cleaning Switch to the left to isolate or lift the groundsTechnical Information OverviewCircuit Theory Stereo OperationCircuit Block Diagram Bridge-Mono Operation Specifications PowerSignal-to-Noise A-weighted PerformanceOutput Signal Input/OutputProtection ConstructionCrown specifications are guaranteed for three years Minimum Guaranteed Power SpecificationsStudio Reference II Minimum Guaranteed Power Watts MainsMaximum Power Specifications Studio Reference I Maximum Power WattsStudio Reference II Maximum Power Watts 100Typical Frequency Response Typical Phase Response 10 Typical Crosstalk AC Power Draw and Thermal Dissipation Studio Reference50% 645 970 245 975 Accessories P.I.P. ModulesHere are some of the available P.I.P. modules FXT Service Worldwide ServiceNorth American Service Crown Audio DivisionCrown Factory Service Information

STUDIO AMPLIFIER specifications

Crown Audio, a leader in professional audio solutions, has long been renowned for producing high-quality amplifiers, and their Studio Amplifier series exemplifies this reputation. The Crown Studio Amplifier is meticulously engineered for audiophiles and professionals seeking excellence in sound reproduction, characterized by its superior performance, reliability, and advanced features.

At the heart of the Crown Studio Amplifier lies its robust power output, designed to deliver pristine audio quality at high volumes without distortion. With various models available, users can choose from a range of power ratings, ensuring they have the right amount of amplification for their specific needs. This versatility makes the amplifier suitable for various applications, including recording studios, live sound environments, and high-fidelity home listening.

One of the standout features of the Crown Studio Amplifier is its advanced signal processing technology. The unit includes built-in DSP (Digital Signal Processing), which allows users to tailor the audio output with precision. This feature enables various EQ settings and dynamic range adjustments that enhance sound clarity and compensate for room acoustics, making it an essential tool for audio engineers and sound designers.

Further enhancing its capabilities, the Crown Studio Amplifier is designed with a sophisticated thermal management system that ensures optimal performance even during prolonged usage. Users can rely on its ability to maintain consistent output without overheating, which is crucial during demanding sessions, whether in the studio or at a live event.

Moreover, the Crown Studio Amplifier boasts a user-friendly interface, featuring intuitive controls that simplify operation. The LCD display provides vital information at a glance, allowing users to monitor levels, settings, and system status easily. This focus on usability enhances the overall experience, allowing professionals to concentrate on their craft rather than getting bogged down in technical complexities.

In addition to outstanding performance, the Crown Studio Amplifier is built for durability and longevity. The rugged chassis and high-quality components are designed to withstand the rigors of the road, making it a reliable choice for touring musicians and sound technicians alike.

With its impressive combination of power, advanced technology, and user-friendly features, the Crown Studio Amplifier continues to set a high standard in the audio industry, making it an ideal choice for anyone serious about sound quality. Whether for studio work, live performances, or home audio setups, the Crown Studio Amplifier delivers exceptional fidelity and reliability, upholding Crown's legacy of excellence in professional audio.
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