User manual BBE SOUND 482

[. . . ] 482 SONIC MAXIMIZER User Guide and Reference Manual i TABLE OF CONTENTS Important Safeguards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i BBE Process Explained . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Controls and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Service /Warranty / Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15 Congratulations on your purchase of the BBE 482 Sonic Maximizer--a two channel signal processor that will benefit any recording or sound reproduction system. You now own a very unique signal processing device with no equal in the audio world. Whether you purchased the BBE 482 for your home studio, P. A. , DJ system, or instrument rack, you will find the 482's rugged construction and careful electronic design a welcome addition to your sonic arsenal. Thank you for your purchase, and for the trust that you've placed in BBE. [. . . ] POWER: This switch controls primary power to the BBE 482. REAR PANEL CONNECTIONS 1 2 3 4 5 CALIFORNIA USA MODEL 482 US PATENT NO 4, 482, 866 AND OTHERS 1. AC POWER CORD: Plugs into AC power receptacle. FUSE: Turn cap on fuse holder counter-clockwise to remove fuse. Model, replace with 250Vac, 1/2A Fastblow type fuse. For all other models, replace with 250Vac, . 125A Fastblow type fuse. ) 3. OUTPUT: The output of the BBE 482 can be taken from the 1/4" Phone Jack or the RCA Jack. Both are unbalanced and are the same point electronically. This allows both outputs to be used simultaneously, eliminating the need for a "Y" cord in the event multiple outputs are required. The recommended single load impedance is at least 10k Ohms. If both outputs are being used, a minimum of a 22k Ohm load per device is required. (The "load" is determined by the input impedance of the next subsequent component in the signal chain. ) The maximum output is rated at +18dBu. The output impedance of the BBE 482 is 1 k ohms. NOTE: Actual output level will vary due to the selected position of the BBE Process, and the actual input signal level. INPUT: The input of the BBE 482 is an unbalanced connection. Although is can be either a 1/4" Phone Plug or an RCA Plug, it is recommended that only one input source is used. Both jacks are the same point electronically, however, due to the input/output impedance characteristics of most audio devices, a loss of signal may occur and/or damage to a component if both inputs are utilized. The input impedance of th BBE 482 is 47k Ohms. CHANNEL A: These connections function the same as CHANNEL B. 3 w w OFF Specifications Frequency Response, process mode:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Program controlled bypass mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Hz to 50kHz +/-0. 5dBu, -10dBu input process mode:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than 0. 025% at -10dBu input, 20-20kHz bypass mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than 0. 002% at -l0dBu input, 20-20kHz Maximum Output: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18dBu (may vary due to control settings) Input Impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47k Ohms, unbalanced 1/4" phone jack or RCA jack Output Impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 k Ohms, unbalanced 1/4" phone jack or RCA jack Sensitivity: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -45dBu for maximum process Maximum Process: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +12dBu boost at 5kHz, -l0dBu input Lo Contour: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +12dBu boost at 50Hz, -l0dBu input * 0dBu = 0. 775mVrms Power Requirements: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U. S. , Canada 8 Japan models: 120VAC, 50/60Hz, 8 WATTS Standard model: 220VAC, 50/60Hz, 8 WATTS Fuse: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace with the same type FASTBLOW fuse U. S. , Canada & Japan models: 250Vac, 1 /2A Fast blow type fuse. Standard model: 250Vac, . 125A Fastblow type fuse Dimensions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19"(W) x 5. 5"(D) x 1. 7"(H) Shipping Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. 5 lbs. Note: Due to continuing product improvement, specifications and design are subject to change without notice. THD, General Operation THE BBE 482 IS A LINE LEVEL SIGNAL PROCESSOR AND IS TO BE CONNECTED PRIOR TO THE POWER AMP IN ANY AUDIO SYSTEM. [. . . ] A very conservative design philosophy has resulted in a piece of equipment which runs very cool and should give years of trouble-free service. 10 Calibration Procedure for the BBE 482 (REV/S/ON 1. 1) NOTE: THIS UNIT WAS TESTED AND CALIBRATED AT THE FACTORY. THIS PROCEDURE IS FOR QUALIFIED PERSONNEL ONLY. BBE Process controls VR1 and VR3 to minimum. (C. C. W. ) 2. Lo Contour controls VR2 and VR4 to minimum. (C. C. W. ) 3. [. . . ]