background image

DL231

OPERATORS MANUAL

CONTENTS

SAFETY CONSIDERATIONS

page 1

INTRODUCTION

page 2

INSTALLATION

page 3

CONTROL DESCRIPTIONS

page 4

OPERATION

page 6

TECHNICAL SPECIFICATION

page 8

h

 

DRAWMER ELECTRONICS LTD. 1990

Summary of Contents for DL231

Page 1: ...1 OPERATORS MANUAL CONTENTS SAFETY CONSIDERATIONS page 1 INTRODUCTION page 2 INSTALLATION page 3 CONTROL DESCRIPTIONS page 4 OPERATION page 6 TECHNICAL SPECIFICATION page 8 h DRAWMER ELECTRONICS LTD 1...

Page 2: ...number copy of the original sales invoice and a detailed description of the problem Drawmer will not accept responsibility for loss or damage during transit This warranty is void if the product has be...

Page 3: ...MAINS INPUT VOLTAGE SWITCH IS SET TO 230 VOLTS AC AND 125mA WHERE THE MAINS INPUT VOLTAGE IS 115 VOLTS AC ALL FUSES MUST COMPLY WITH IEC127 2 THE FUSE BODY SIZE IS 20mm x 5mm CAUTION MAINS CABLE DO NO...

Page 4: ...ase the versatility of such a unit by automating some of the more critical control functions The DL231 is a dual channel Expander Compressor Limiter combining ease of operation with flexible performan...

Page 5: ...ad try disconnecting the signal screen on the cables connecting the DL221 to the patchbay If such measures are necessary balanced operation is recommended S C INSERT The side chain insert point is con...

Page 6: ...for the compressor to recover from gain reduction Programme signals are complex so a complex release characteristic is required for optimum results Fast transients require a fast release time to avoid...

Page 7: ...h sets the maximum attenuation of 10 20 or 40dB FUNCTION selects side chain listen normal expander in operation and off expander bypassed ATTACK time is completely automatic See introduction RELEASE t...

Page 8: ...ereo link and set up as above making sure that all controls are the same for both channels GR displays will show the same readings except when excessive peak limiting occurs on either channel 6 If amb...

Page 9: ...djust the expander to obtain the required noise reduction NB The external filter will not affect the processed signal only the control circuitry Frequency Conscious Compression This can be achieved by...

Page 10: ...eshold 24dB to infinity ref 4dBm Ratio Variable 1 1 to 20 1 Attack 50 S to 5mS Release 50mS to 5 Sec Output Gain 20dB to 20dB EXPANDER Threshold 40dB to 10dB Ratio 1 1 1 2 1 20 Switchable Attenuation...

Reviews: