Equipment information

Orban 642B/SP Equalizer
Model: 642B/SP
Date: 1989
Category: Professional music equipment
Group: Equalizer
Description: Parametric Equalizer/Notch Filter

The Orban 642B Parametric Equalizer/Notch Filter is an efficient and powerful tool for a wide range of Creative and corrective equalization applications. • Full parametric operation with no interaction between parameters. • True infinite-depth notch filtering (made possible by the 642B’s constant-Q design). • Each band is continuously tunable over a frequency range exceeding 20:1. • Tuning ranges of bands overlap significantly to maximize versatility. • Verniers on the FREQUENCY controls facilitate fast, precise tuning of Sharp notches. • +16dB boost to infinite cut (~45dB typical) available in each band. • Bandwidth can be varied from a broad (Q = 0.29) curve to a Sharp (Q = 5.0) curve. • Dual 4-band or mono 8-band configuration can be selected with the front-panel cascade button. • Continuously tunable 18dB/octave high-pass filters and 12dB/octave proprietary Automatic Sliding Besselworth™ low-pass filters provide full flexibility while retaining maximum musicality. • Noise and distortion specs are significantly better than 16-bit digital. • Input signal gain can be adjusted throughout a range of +14dB to -©o. • overload lamps warn of overload when the output of any internal Amplifier is within 1dB of its clipping level. • Extensive RF suppression on input, output, and power leads.

These manuals are available for the above equipment:

Manual Type: Service and User Manual Orban-9764-Manual-Page-1-Picture
Pages: 75
Size: 9.55 Mbytes (10016741 Bytes)
Language: english
Manual-ID/Number: 95071-000-02
Date: 01 December 1989
Quality: Scanned document, all readable.
Upload date:
MD5: dccf9c5f3ec9944401830f9e704fddcc
Downloads: 374 since 25 October 2017

1-1 Section 1: Introduction Orban's 642B Parametric Equalizer/Notch Filter Registration, Warranty, Feedback 2-1 Section 2: Installation Installation and Set-up 3-1 Section 3: Operation 642B Controls and Displays Using the 642B - General Considerations Using the 642B in Specific Applications Logging Control Settings 4-1 Section 4: Maintenance Routine Maintenance Getting Inside the Chassis Performance Evaluation, Alignment 5-1 Section 5: Troubleshooting Problems and Possible Causes Technical Support Factory Service Shipping Instructions 6-1 Section 6: Technical Data Specifications Circuit Description Parts List Schematics, Assembly Drawings Abbreviations


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