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13

786 Bloc

k Dia

g

ram

1/7/98

Input

Output

Jensen

®

JT-16-A

Jensen

® 

Output Transformer

Gain Switching

Relay Bank

Coarse Gain

Rotary Switch

+15dB

+20dB

+65dB

M8 Mic Pre

Module

+48V

Relay

Relay

Super Low Z

20dB Pad

Phase Invert

Relay

Relay

Relay

Relay

Rectifier

Unbalance

Ground

Spectrum

Detail

HF EQ

Fine Gain

High Freq

EQ

Rectifier

VU Meter

Peak LED

RF

Filter

diagram

Block

786

Summary of Contents for 786

Page 1: ...Precision Mic Preamp 786 Owner s Manual...

Page 2: ...t or in the system to which it is connected can result in full line voltage between chassis and earth ground Severe injury or death can then result if the chassis and earth ground are touched simultan...

Page 3: ...nsole Signal Path 3 Connection To Your System 4 Operating Controls 6 Front Panel Description 6 Rear Panel Description 8 Technical Support Factory Service 10 Warranty 11 Specifications 11 Block Diagram...

Page 4: ...in mind We wanted to create a pristine mic pre that would carefully reveal the very subtle nuances of any source device To that end the 786 uses premium parts and as short a signal path as possible t...

Page 5: ...t upon the signal EQ dynamics panning etc Unfortunately console preamp circuits are often not given enough room on the circuit board or high quality parts It is for this reason that outboard pre amps...

Page 6: ...red settings including phantom power and Low Z Connect the audio output of the 786 to the console s LINE INPUT and ensure that the con sole s input selection switch is set to LINE and the console s ga...

Page 7: ...a compressor limiter in the path before the recorder The perfect com panion product to the 786 is the dbx 160SL Stereo Compressor Also when recording with this method remember that desired gain change...

Page 8: ...rated to the frequency at which 3dB of boost or cut occurs when the Detail con trol is set at 16dB or 16dB respectively Detail Control This control adjusts the amount of boost or cut of the high frequ...

Page 9: ...or consistent performance 20dB Pad Switch and LED This switch inserts a 20dB attenuator circuit into the signal path from the microphone input The pad is inserted before the signal is routed through t...

Page 10: ...ssis Ground Binding Post The green Chassis Ground binding post is supplied to give the user another method to provide com prehensive grounding options for any installation It is easy to think of the b...

Page 11: ...e to any 50Hz or 60Hz AC power source of the correct line voltage for your area Make sure this voltage is also correct for the voltage marked on the back of the 786 Always make AC power connections wi...

Page 12: ...registration card and send it in please do so now Before you return a product to the factory for service we recommend you refer to the manual Make sure you have correctly followed installation steps...

Page 13: ...y obligation or liability in connection with the sale of this product In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the perfor mance of this...

Page 14: ...low LED to indicated when 12 dB octave mode is selected Peak Red LED to indicated when signal is within 3 dB of clipping Sense points are out put of M8 gain module Course Gain output of Fine Control a...

Page 15: ...in Switching Relay Bank Coarse Gain Rotary Switch 15dB 20dB 65dB M8 Mic Pre Module 48V Relay Relay Super Low Z 20dB Pad Phase Invert Relay Relay Relay Relay Rectifier Unbalance Ground Spectrum Detail...

Page 16: ...Utah 84070 Phone 801 568 7660 Fax 801 568 7662 Int l Fax 603 672 4246 Questions or comments E mail us at customer dbxpro com or visit our World Wide Web home page at www dbxpro com A Harman Internatio...

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