Thermionic Culture The Earlybird 4 Скачать руководство пользователя страница 2

©

Thermionic Culture Ltd., July 2014 

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WARNING 

 
 

For your personal safety, please read this operating manual and 
warning thoroughly before using the equipment. 
 
This unit must be installed in such a manner that operator access 
to the mains plug is maintained. Where the product is to be rack 
mounted, this may be achieved by having access to the 
disconnection device for the whole rack. 
 
To reduce the risk of electric shock, it is essential that the unit is 
disconnected from the mains supply before removing the cover. 
 
Please also note that the power supply capacitors within this unit 
can remain charged even after the mains supply has been 
disconnected. It is essential that these capacitors are discharged 
after the mains supply has been disconnected and the covers 
have been removed. 
 
In the event that this unit has been dropped or has suffered an 
impact, an electrical safety test must be carried out before 
reconnection to the mains supply. 
 
This equipment is not intended for use in explosion hazard 
environments. It must be used and stored in studio conditions, 
such that the ambient relative humidity does not exceed 80%, nor 
is the temperature to be allowed to drop to a level, which would 
cause dew point to be reached. 
 
Please ensure that adequate ventilation is provided and that the 
ventilation slots are not obstructed. When rack mounting this 
equipment, a fan may be required to provide sufficient airflow. 

Содержание The Earlybird 4

Страница 1: ...CULTURE THERMIONIC TheEarlybird 4 valve microphone pre amplifier OPERATING MANUAL...

Страница 2: ...after the mains supply has been disconnected It is essential that these capacitors are discharged after the mains supply has been disconnected and the covers have been removed In the event that this u...

Страница 3: ...Ltd July 2014 2 CONTENTS Section Page 1 Introduction 3 2 Controls 4 2 1 Gain 4 2 2 Bass filter 4 2 3 Pad 4 2 4 Z 2 5 48V 4 2 6 Phase reverse 4 2 7 Output trim 4 3 Metering 6 4 Operational suggestions...

Страница 4: ...d 2 series They have improved Sowter input and output transformers and traditional point to point hand wiring by experts eliminating the slight performance degradation occurring when using circuit boa...

Страница 5: ...frequency drops 2 3 Pad Cuts down the input level by 20dB Use with Z set to 1200 for cleanest results 2 4 Z Switches input impedance between 300 and 1200 This is for matching microphones see 4 2 5 48...

Страница 6: ...hermionic Culture Ltd July 2014 5 electronics is available when the controls are set to maximum These controls are designed to be both fine level controls and to reduce the output to feed 10dBV system...

Страница 7: ...actual output of the electronics less 2dB not necessarily the actual output as they precede the Output Trim controls They will only measure the actual output when the Output Trim is set to the M posit...

Страница 8: ...evel inputs eg kick drum use the Pad to reduce level With Pad in the input Z will be 2k Keep Output Level controls near maximum for cleanest results low and increase Gain control if a bit of distortio...

Страница 9: ...imum output level MOL 34dBm Distortion THD 1kHz 100Hz unweighted at 40dB gain 0 0035 0 008 Frequency response 0 5dB at 40dB gain setting 10Hz to 35kHz Gain settings dB Mic 40 45 50 55 60dB High pass f...

Страница 10: ...pical values for Distortion Noise and Phase shift 40dB 50dB 60dB THD 100Hz to 10kHz 0 003 0 015 0 03 Noise dB ref MOL 117 113 104 Phase shift 100Hz 1kHz 10kHz 20kHz 0 0 1 0 3 14 3 9 28 7 8 0 0 1 4 0 4...

Страница 11: ...Thermionic Culture Ltd Harlow Essex UK Tel 44 0 1279 414770 email technical thermionicculture com Thermionic Culture Ltd July 2014 Printed in UK...

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