Thermionic Culture THE PHOENIX HG15 Operating Manual

High gain valve compressor

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  • Page 2 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. ©Thermionic Culture Ltd, October 2013...
  • Page 3: Table Of Contents

    CONTENTS Section Page Introduction Installation Metering Controls Input Gain Bass Cut Threshold Time Constant Side Chain Bass Cut Presence Active EQ 3.10 Output Trim Servicing & Maintenance Valves/Tubes Operating Voltage/Fuses Operational Hints Specification ©Thermionic Culture Ltd, October 2013...
  • Page 4: Introduction

    ("Presence" and “Air”) which can be switched in and out together. Two Phoenix HGs can be linked for stereo operation by the Link socket on the rear. We have also provided a Side Chain Bass Cut switch. ©Thermionic Culture Ltd, October 2013...
  • Page 5: Installation

    Do not adjust the screw on the meter itself unless the needle is not horizontal when the unit is cold. The Metering is not necessarily accurate so use it as a guide only. ©Thermionic Culture Ltd, October 2013...
  • Page 6: Controls

    This controls the point at which the compression ‘kicks in’. Max compression is at 5. Time Constant We have decided to have 6 positions which relate to most common and usable settings of attack and ©Thermionic Culture Ltd, October 2013...
  • Page 7: Side Chain Bass Cut

    ‘shelf’. Active EQ Both "Presence" and "Air" can be switched IN/OUT together using this switch. 3.10 Output Trim A reverse linear attenuator, reducing output level by up to 15dB to suit low level inputs. ©Thermionic Culture Ltd, October 2013...
  • Page 8: Servicing & Maintenance

    Correct valves are Input: 6AQ8 (ECC85) Output: 12AT7 (ECC81) Operating voltage/Fuses Operating Voltage Fuse Rating 115V T630mA 20mm type 230V T315mA 20mm type ©Thermionic Culture Ltd, October 2013...
  • Page 9: Operational Hints

    This can make the release time of the compressor feel very slow and sluggish. ©Thermionic Culture Ltd, October 2013...
  • Page 10 This situation can apply to many other instruments or sounds like bass guitars, bass drums, synthesised sounds or any instrument / sound or mix of sounds that contains low frequency information. ©Thermionic Culture Ltd, October 2013...
  • Page 11: Specification

    12 dB + compression. Frequency response +0/-1dB 16 Hz to 50 kHz Max O/P level (MOL): + 25.5 dBu, 10kΩ load Signal to Noise: 96 dB Power Consumption: Indicator Lamp: 12V / 3W Net Weight: ©Thermionic Culture Ltd, October 2013...
  • Page 12 Phoenix HG Frequency Response Air 1 Air 2 Air 3 Air 4 Air 5 Air 6 Bass Cut 50 Bass Cut 100 Presence 3 Presence 6 Frequency (kHz)
  • Page 13 Thermionic Culture Ltd., Harlow, Essex, UK Tel: +44 (0)1279 414770 email: technical@thermionicculture.com © Thermionic Culture Ltd, October 2013. Printed in UK.

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