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DL441 OPERATORS’ MANUAL

9

TECHNICAL SPECIFICATIONS

INPUT IMPEDANCE

20KOhm

MAXIMUM INPUT LEVEL

+21dBu (+17dB ref. +4dBu)

OUTPUT IMPEDANCE

50 Ohm

MAXIMUM OUTPUT LEVEL

+20dBu

BANDWIDTH

<12Hz to 35KHz -1dB

CROSSTALK

@10kHz

Better than 

!

80dB

@20kHz

Better than 

!

75dB

OUTPUT BALANCE

 Better than 40dB 20Hz to 10kHz

INPUT CMR

Better than 40dB 20Hz to 10kHz

NOISE AT UNITY GAIN

 ref4dBu

W ideband

22Hz - 22KHz

CCIR ARM

IEC A

Q-Pk CCIR

AV

!

90dB

!

98dB

!

99dB

!

100dB

!

88dB

RMS

!

89dB

!

96dB

!

97dB

!

98dB

DISTORTION

100Hz

1KHz

10KHz

Unity Gain, +4dBu Input

< 0.02%

< 0.015%

< 0.035%

+14dBu Input, 10dB G.R.

< 0.3%

< 0.1%

< 0.1%

POWER REQUIREMENTS

115Volt or 230Volt at 50-60Hz,

13 W atts

FUSE RATING

63mA for 230Volt,

125mA for 115Volt

CONFORMING TO IEC 127-2

FUSE TYPE

20mm x 5mm, Class 3 Slo-Blo, 250Volt working

CASE SIZE

482mm (w) x 44mm (h) x 200mm (d)

WEIGHT

 (incl packaging)

3.4 Kgs

Summary of Contents for dl441

Page 1: ...ERATIONS page 1 INTRODUCTION page 2 INSTALLATION page 3 CONTROL DESCRIPTIONS page 5 C Compressor page 5 C Peak Limit page 6 C Stereo Link page 6 OPERATION page 7 IF A FAULT DEVELOPS page 8 CONTACTING...

Page 2: ...umber 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 bee...

Page 3: ...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 IEC 127 2 THE FUSE BODY SIZE IS 20mm x 5mm CAUTION MAINS CABLE DO NOT AT...

Page 4: ...ue stereo operation Traditionally soft knee compressors are preferable for unobtrusive level control or for the control of finished mixes whereas ratio type compressors are generally considered more s...

Page 5: ...it maybe exposed to high levels of disturbance such as found close to a TV or radio transmitter we advise that the unit is operated in a balanced configuration The screens of the signal cables should...

Page 6: ...apping screws holding the voltage selection switch cover plate on the rear panel 3 Remove the cover plate and slide the switch fully to its opposite end 4 Rotate the cover plate one half turn 180E and...

Page 7: ...ximately 15dB above which level conventional ratio compression is applied For this reason the signal level may appear to fall when the compressor is switched from Hard to Soft Knee operation and some...

Page 8: ...al will not be permitted to exceed This limiter is very fast acting enabling it to control any peaks without audible distortion If the output signal is so high as to cause the limiter to operate for m...

Page 9: ...d partly by observing the gain reduction meter Normally a maximum gain reduction of between 8dB and 12dB will be adequate If more gain reduction appears necessary it is worth considering applying a co...

Page 10: ...riginal sales invoice and a detailed description of the problem Authorised returns should be prepaid and must be insured All Drawmer products are packaged in specially designed containers for protecti...

Page 11: ...er than 40dB 20Hz to 10kHz NOISE AT UNITY GAIN reference 4dBu Wideband 22Hz 22KHz CCIR ARM IEC A Q Pk CCIR AV 90dB 98dB 99dB 100dB 88dB RMS 89dB 96dB 97dB 98dB DISTORTION 100Hz 1KHz 10KHz Unity Gain 4...

Page 12: ...DL441 OPERATORS MANUAL 10 BLOCK DIAGRAM...

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