Crown Audio STUDIO AMPLIFIER owner manual Installation, Mounting, Cooling

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Studio Reference I & II Professional Studio Amplifiers

3 Installation

3.1 Mounting

Studio Reference amplifiers are designed for standard 19 inch (48.3 cm) rack mounting or stacking without a cabinet. In a rack, it is best to mount units directly on top of each other. This provides the most efficient air flow and support. If the rack will be transported, we recommend that you fasten the amplifier’s back panel securely to the rack to help support the unit’s weight.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FRONT VIEW

 

 

7 in

 

 

 

(17.3 cm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19 in

(48.3 cm)

SIDE VIEW

16 in

(40.6 cm)1.4 in

(3.6 cm)

Fig. 3.1 Mounting Dimensions

Before proceeding, make sure the meter switches are set to your liking. The front panel assembly must first be removed to change these switches, so it is easier to do before the unit is mounted (see Section 4.4).

By now, you may be looking for rack ears. The rack ears are covered by two attractive end caps which are held in place by phillips screws (see Figure 3.2). To use the rack ears, remove the screws and lift off the caps. With sufficient side clearance, you can reinstall the end caps once the amplifier is mounted in the rack.

Fig. 3.2 Removing an End Cap

3.2 Cooling

Your amplifier has an internal variable speed fan that is controlled to match the unit’s real-time cooling needs. With proper installation and typical studio use, the fan may never need to run. For best results, you should fa- miliarize yourself with its cooling requirements.

Here are some tips to help keep your amplifier cool. First, never block the amplifier’s front or side air vents. If the amplifier is rack-mounted, its sides should be at least 2 inches (5 cm) away from the cabinet (see Fig- ure 3.3). Also, open rack spaces should be covered to prevent heated air from the side vents from being drawn out the front of the rack into the front air intake.

You will know when your Studio Reference amplifier has sufficient cooling because its ODEP indicators will be brightly lit. If the amplifier’s ODEP indicators dim or turn off, overly demanding conditions are forcing it to protect itself from overheating. If you experience a cooling problem, you should consider several factors that may be contributing to the problem, including load impedance, air flow and ambient air temperature.

Low-impedance loads generate more heat than higher impedance loads. To avoid impedance-related cooling problems, connect loads to each channel with a total impedance of at least 2 ohms in Stereo, 4 ohms in Bridge-Mono, and 1 ohm in Parallel-Mono mode (see Section 3.3 for wiring instructions). If your loads are reasonable and you still have a cooling problem, check for shorts in the loudspeaker cables, and look for prob- lems with air flow or ambient air temperature.

Air flow restrictions are the most common cause of inad- equate cooling. Restrictions may result from improper

 

 

 

 

 

17 in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IMPORTANT: Be sure the back of

 

 

 

 

 

the amplifier is supported.

 

 

 

AIR

 

 

 

AIR

 

 

FLOW

 

 

 

FLOW

6 in

AMPLIFIER

 

 

 

 

 

(TOP VIEW)

 

 

 

 

 

 

 

 

 

 

 

 

2 in

 

 

 

 

 

 

 

MIN.

 

 

 

 

RACK

CABINE

AIR FLOW

Fig. 3.3 Top View of a Rack-Mounted Unit

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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 I Power Draw, Current Draw Studio Reference II Minimum Power MatrixStudio Reference II Maximum Power Matrix Balanced and Unbalanced Phone PlugsUnpacking Instructions Studio Reference I AmplifierFeatures WelcomeFacilities Level ControlsReset Switch Do not use the channel 2 input in either mono modeMounting InstallationCooling Wiring Stereo ModeStereo Two-Channel Operation Bridge-Mono OperationBoth sides of the line must be isolated from Meters, switches, etc. to the Bridge-Mono outputMode until the wiring is removed especially Tortion and excessive heatingShielded Input ConnectionCable Twin-leadInput Wiring Tips Solving Input ProblemsUse Good Connectors Output ConnectionHigh frequency oscillations can cause your amplifier Available from most electrical supply stores AC Mains PowerAffect the output power available from the amplifier Additional Load ProtectionIndicators PrecautionsOperation Indicator Status Amplifier Condition Protection SystemsActivate its DC / low-frequency protection circuitry Standby ModeOdep Amplifier’s transformer thermal protection cirControls Circuit BreakerFilter Cleaning Switch to the left to isolate or lift the groundsCircuit Theory Technical InformationOverview Stereo OperationCircuit Block Diagram Bridge-Mono Operation Signal-to-Noise A-weighted SpecificationsPower PerformanceProtection Output SignalInput/Output 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 P.I.P. Modules AccessoriesHere are some of the available P.I.P. modules FXT North American Service ServiceWorldwide 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.