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Introduction

The Summit Audio EQF-100 Full Range Equalizer uses tube and solid state technologies
to produce the warm sounds associated with tubes while providing the reliability of solid
state devices. The EQF-100 is a passive equalizer followed by a vacuum tube amplifier to
overcome any gain loss. Connections are made by using three pin XLR connectors.

Features:

 

Four bands of 7 switch selectable frequencies

 

High and low filters, 3 frequencies each

 

Balanced input

 

Continuously variable boost or cut

 

Individual in/out for each of the 4 bands

 

Silent bypass switch

 

105 dB dynamic range

 

990 output stage (balanced or unbalanced)

 

Three year warranty

 

Transformerless signal path

 

Hand crafted in the USA

Having found this manual, carefully unpack the EQF-100 and its power cord. Save the
carton and packing material should it be needed for future shipping. Before powering the
unit, read this manual, observing the cautions for high voltage. Proceed by doing the
following:

 

Set the line voltage switch to the proper position

 

Determine the proper fuse size by referring to the specifications

 

Check for pilot lamp illumination when powered up

Summary of Contents for EQF-100

Page 1: ...HOULD ONLY BE DONE BY QUALIFIED SERVICE PERSONNEL OR FACTORY DO NOT OPERATE THE EQF 100 WITH THE COVERS REMOVED OPERATING MANUAL EQF 100 FULL RANGE PASSIVE VACUUM TUBE EQUALIZER Summit Audio Inc 1183...

Page 2: ...t Continuously variable boost or cut Individual in out for each of the 4 bands Silent bypass switch 105 dB dynamic range 990 output stage balanced or unbalanced Three year warranty Transformerless sig...

Page 3: ...Boost Out Cut This switch sets the section for boost or cut the center position turns the sections off Note When going between cut and out a popping sound may occur 5 Shelving Resonant Changes the hig...

Page 4: ...1 9 2 8 3 4 7 5 6...

Page 5: ...ant switch to resonant Setting up a low or high filter Set all four Boost Cut Bypass switches to Out Adjust the two filter settings to the desired frequencies Notch filtering Find the approximate freq...

Page 6: ...the replacements must be selected using 5 volts DC on the filaments The tubes we use are selected in the circuits that they are used in to ensure proper operation long life and low distortion and nois...

Page 7: ...at therefore it is necessary to have good air flow to prevent damage to your EQF 100 or any other pieces of gear housed in the rack with it The tubes in your Summit Audio EQF 100 have been intensely s...

Page 8: ...balanced with an impedance of 20k DISTORTION Better than 0 05 THD at 1 kHz unweighted FREQUENCY RESPONSE 5 Hz to 100 kHz balanced output NOISE Less than 80 dBu BAND 1 FREQUENCIES 33 Hz 56 Hz 100 Hz 18...

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