Crown Audio manual VT-15 Vacuum Tube Recording Channel Final Test Report

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VT-15 Vacuum Tube Recording Channel

Final Test Report

Serial Number_______________ Mains Voltage 120/240 set to __________________

Date ________________ Tested by ________ VU Calibrated to _______________ dBm

Test Equipment ____________________________ Microphone ________________________

Frequency Response:

20 cps to 20 kc/s +/- ___________ dB

THD+Noise:

20 cps ______________ %

200 cps _____________ %

2 kc/s _______________ %

20 kc/s ______________ %

Noise:

______________ dB below +4 dBm out

Equivalent Input Noise _______ dB

Operational Tests Microphone Preamplifier: -20 pad ________________

Lo-Z input ______________

Phase Reverse __________

+48V ___________________

Line Input __________________

Instrument Input ____________

C->E Switching ______________

Compressor:

Threshold ___________________

Attack ______________________

Release _____________________

Harder/Softer ________________

VU GR Calibration ____________

VU Output Calibration ________

Sidechain HPF ________________

Equalizer:

LFB __________

LFC __________

HFB __________

HF Q _________

HF C _________

Listening Test ____________

VT-15 Recording Channel

D.W. FEARN

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Contents Fearn How to Contact us Certificate of RoHS Compliance FearnPage VT-15 Vacuum Tube Recording Channel Final Test Report List of Illustrations B l e o f C o n t e n t sCopyright 2007 D.W. Fearn & Associates Limited 5-Year Warranty History of the VT-15 Vacuum Tube Recording Channel Fearn E C I F I C AT I O N S E C I F I C AT I O N S C O N T ’ D S C R I P T I O N Fearn S TA L L AT I O N PowerGrounding and Shields Input and Output ConnectionsE R AT I O N VT-15 front panel controls and indicatorsControl Set-up Output Mic InputOntrols see Figure Compressor Controls Equalization Controls Initial Set-Up Benc h TestFearn Preamp Section E O RY O F O P E R AT I O NCompression Section VU Meter and Meter Amplifier Fearn I N T E N a N C E VU Meter Calibration Factory Check-Out TroubleshootingWarranty Repair

VT-15 specifications

The Crown Audio VT-15 is a robust loudspeaker system that has gained recognition for its advanced technologies and impressive audio performance, making it ideal for various applications, including live events, installations, and broadcast scenarios. Built with durability and sound quality in mind, the VT-15 serves both professionals and enthusiasts in the audio industry.

One of the standout features of the VT-15 is its high-efficiency design, which is achieved through advanced driver technology. The loudspeaker is equipped with a premium 15-inch woofer that delivers powerful low-end reproduction, ensuring a solid bass presence that enhances the overall listening experience. This, combined with a high-frequency compression driver that operates at 1 inch, ensures clear and articulate treble frequencies, resulting in a balanced sound profile suitable for different musical genres.

The VT-15 incorporates Crown’s patented Waveguide technology, designed to provide consistent and controlled sound dispersion. This feature allows the loudspeaker to effectively cover large areas without experiencing significant drop-off in audio fidelity, making it a great choice for medium to large venues. The controlled directivity also means that listeners in various positions within the space can enjoy a similar audio experience, enhancing the performance of any event.

Another defining characteristic of the VT-15 is its rugged construction. Built with a reinforced enclosure, it is designed to withstand the rigors of touring and heavy use in fixed installations. The cabinet is constructed from high-quality materials that minimize vibration and resonance, further contributing to the clarity of sound. Its lightweight design allows for easier transport and setup, making it a practical choice for audio professionals on the go.

In terms of connectivity and compatibility, the VT-15 features versatile input options, allowing it to integrate seamlessly with various audio systems. Whether used in conjunction with other Crown products or compatible equipment from different brands, the VT-15 ensures flexibility in configuration.

Overall, the Crown Audio VT-15 stands out as a high-performance loudspeaker that combines advanced technologies, durability, and sound fidelity. Its powerful drivers and innovative design make it a reliable choice for any professional audio application, providing users with the quality and performance they demand. Whether for live music, presentations, or installations, the VT-15 delivers exceptional audio experiences that elevate any event or setting.
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