Tube-tech EQ 1AM Parametric Mastering Equalizer User Manual download pdf

Lydkraft ApS

Mose Allé 20, DK 2610 Rødovre

Denmark

TUBE-TECH EQ 1A, EQ 1AM

Equalizer

Description:

The TUBE-TECH EQ 1A is a full range one channel unit, featuring low and high cut filters with

a slope of 6 dB/octave or 12 dB/octave, low and high shelving filters and three overlapping bell

type bands with variable bandwidth.

The cut filters are designed around unity gain tube amplifiers (cathode follower) and the

shelving and the bell filters are designed around two tube operational amplifiers.

All seven sections have a separate in/out switch.

An all bypass switch is also provided.

The unit is all tube based except for the power supply.

Input and output have fully floating transformers.

All DC voltages are stabilized, except the anode voltage for the output stage.

The TUBE-TECH EQ 1AM has the same features as the EQ 1A and in addition, all pots on the

front panel has been substituted with 12 positions rotary switches, to give better precision and

repeatable settings.

(030507)

1 2 3 4 5 6

Summary of Contents

Page 1 - Equalizer

Lydkraft ApSMose Allé 20, DK 2610 RødovreDenmark1TUBE-TECH EQ 1A, EQ 1AMEqualizerDescription:The TUBE-TECH EQ 1A is a full range one channel unit, fea

Page 2 - (030507)

LYDKRAFT ApSMose Allé 20, DK 2610 RødovreDenmark2CONTROLS:LOW CUT:The low cut section includes a frequency switch, a slope switch and an in/outswitch.

Page 3

LYDKRAFT ApSMose Allé 20, DK 2610 RødovreDenmark3HIGH SHELVING:GAIN: EQ 1A: The gain control is continuously variable from 0 dB to 15 dB.EQ 1AM: The g

Page 4

LYDKRAFT ApSMose Allé 20, DK 2610 RødovreDenmark4ADJUSTMENT PROCEDURE:CAUTION:Before making any adjustment let the unit heat-up at least 30 min.Always

Page 5

LYDKRAFT ApSMose Allé 20, DK 2610 RødovreDenmark5HIGH SHELVING:1) Apply a signal of 20 kHz, 0,0 dBU to the input of the equalizer.2) Turn the GAIN-con

Page 6 - All specifications at RL=600

LYDKRAFT ApSMose Allé 20, DK 2610 RødovreDenmark6SPECIFICATIONS:EQ 1A, EQ 1AMGain:0dBInput impedance:> 600Output impedance:< 60Distortion(THD+

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Tube-tech EQ 1AM Parametric Mastering Equalizer User Manual

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