Crown DC-300A - Manuals - manualsarea.com

Page 2 - I D SERIAL NO; Proof of Performance Report; laboratory power amplifier

0 B A T C H I D SERIAL NO Proof of Performance Report DCA-11 020163 DC-300A laboratory power amplifier Serial Number Line Voltage Amcron Label C H . l 1 . Q u i e s . o f f s e t o f l e s s t h a n 1OmV 2 . 1 KHz 180 watts RMS minimum into 8 ohms, per channel, both channels operating, 0.1% total ha...

Page 3 - ‘TOTAL; PERFOR; N C

‘TOTAL PERFOR M A N C E IS WHAT COUNTS" CROWN test and check-out procedures reflect our basic design philosophy; we believe that reliability can be engineered into a product. As such, our check-out is designed to expose and correct a problem, before it happens. This testing begins when t h e u n...

Page 4 - TABLE OF; CONTENTS

TABLE OF CONTENTS PAGE Section 1 D E S C R I P T I O N 1 .1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 6 - Section 1; DESCRIPTION

Section 1 DESCRIPTION 1 .1 GENERAL DC-300A PICTORIAL The DC-300A is a dual-channel high-power amplifier for precision amplification of frequencies from DC to 20KHz. The unit features extremely low harmonic and intermod- ulation distortion, very low noise, highest “damping factor,” and quality parts ...

Page 16 - Section 2; INSTALLATION

Section 2 INSTALLATION 2 . 1 U N P A C K I N G As soon as the amplifier shipment is received, please inspect for any damage incurred in transit. Since the unit was carefully inspected and tested at the factory, it leftthe factory unmarred. If damage is found, notify thetransportation company immedia...

Page 21 - ALL VIEWS WITH BOTTOM PLATE REMOVED

In order to change the voltage, it is first necessary to carefully detach the bottom cover from the unit. On the back of the board-mount subchassis a terminal stripwith on jumpers is used to make the line-to-transformer primaries connections (see Fig. 2-10). ALL VIEWS WITH BOTTOM PLATE REMOVED See N...

Page 22 - CONTROLS AND ADJUSTMENTS; Section 3; OPERATING INSTRUCTIONS

3.1 CONTROLS AND ADJUSTMENTS Section 3 OPERATING INSTRUCTIONS OPERA TING CONTROLS T h e D C - 3 0 0 A contains all the facilities essential for a high performance amplifier. On the front panel are located independent level controls, a power switch, and pilot light. There is an AC line fuse on the re...

Page 26 - Section 4; CIRCUITRY

Section 4 CIRCUITRY 4.1 PRINCIPLES OF OPERATION The DC-300A has two totally direct-coupled amplifiercircuits which employ a dual IC op amp and silicon transistors in all stages. The CROWN-designed anddeveloped circuit represents a level of quality and per- formance presently unequaled in the field o...

Page 28 - Section 5; APPLICATION NOTES

APPLICATION NOTE NO. 1 V-l LIMITS OF A LOAD Evaluating the V-l (volt-ampere) needs of a load: Many loads exhibit large (or energy storage), which limits a power amplifier’s ability to deliver a maximum power. If a load stores energy, which in turn flows back into the amplifier, it is clear that the ...