Thermionic-culture THE EARLYBIRD 2.2 2 Channel mic, pre amp with eq User Manual

CULTURETHERMIONICTheEarlybird 2.2valve microphone pre-amplifierOPERATING MANUAL

©Thermionic Culture Ltd., September 2010 9 5 Operational suggestions 5.1 Impedance The Earlybird has a switchable input impedance for its mic-amp i

©Thermionic Culture Ltd., September 2010 10 the PAD will stop distortion in the input transformers of the Earlybird mic amp. 5.3 Pullet Setting the

©Thermionic Culture Ltd., September 2010 11 If the Earlybird is configured as a line amp then it can be a very useful valve EQ. We have had very posi

©Thermionic Culture Ltd., September 2010 12 6 Specification Included are the figures for noise, distortion and EQ. They are all measured with the Ea

Earlybird 2.2 Frequency response curves-35-25-15-55152500000100001000100101f(Hz)Gain (dB)FlatBass Cut 40HzBass Cut 100HzBass Cut 800HzBass Cut 800Hz B

Thermionic Culture Ltd., Harlow, Essex, UK Tel: +44 (0)1279 414770 Fax: +44 (0)1279 412233 www.thermionicculture.com ©Thermionic Culture Ltd., Septe

©Thermionic Culture Ltd., September 2010 1 WARNING For your personal safety, please read this operating manual and warning thoroughly before usi

©Thermionic Culture Ltd., September 2010 2 CONTENTS Section Page 1 Introduction 3 2 Controls 4 2.1 Function 4 2.2 Gain 4 2.3 Bass cut 4

©Thermionic Culture Ltd., September 2010 3 1 Introduction The Earlybird 2.2 is a two channel all valve pre-amp employing a balanced push-pull circ

©Thermionic Culture Ltd., September 2010 4 2 Controls 2.1 Function This control selects the basic operating mode of the Earlybird. The pre-amp can

©Thermionic Culture Ltd., September 2010 5 2.4.1 Top This control uses our award-winning 'Varislope' lift circuit where the lift is a nearl

©Thermionic Culture Ltd., September 2010 6 2.7 Output trim These controls are reverse linear attenuators, operating after all of the electronics. Th

©Thermionic Culture Ltd., September 2010 7 3 Metering The meters are a VU type, however they do have a compressed scale above 0VU. This feature has

©Thermionic Culture Ltd., September 2010 8 4 Connections There is a row of input and output sockets on the back of the Earlybird, which allow it to