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LYDKRAFT TUBE-TECH MEC-1A User Manual

LYDKRAFT TUBE-TECH MEC-1A
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Product Description
The TUBE-TECH MEC 1A Recording Channel is a one
channel recording unit, featuring a microphone
preamplifier equalizer and compressor. The shelving and
the bell filters are designed around a tube operational
amplifier.
Both Input and Output are balanced and have fully
floating transformers with a static screen. The power
supply and the sidechain circuit is based on solid state
circuitry. With the exception of the output stage all
DC voltages are stabilised.
Compressor
Optical gain reduction element
Linkable for stereo applications
Variable Attack and Release parameters
Ratio 1,5:1 to 10:1
General
Master Output Gain (off to +10 dB)
Clickless swap relay (Eq. <-> Compressor)
VU-Meter showing output or compression
Frequency response @ -3dB: 5 Hz to 60 kHz
Low Noise: < - 85 dBu @ 10 dB gain
Conductive plastic potentiometers
Reg. power supply w. toroidal transformer
The MEC-1A encompasses the all tube based designs of the MP 1A Microphone Preamplifier,
EQ 1A Equalizer and CL 1B Compressor in a powerful, two-unit recording package – designed
and hand crafted to deliver the warmth of vintage quality recordings with unrivaled accuracy,
purity and realism.
three-in-one valve solution
RECORDING CHANNEL
Product Features
Microphone Preamplifier
+20 dB to +70 dB Gain
Phantom Power (+48 V)
Phase Reverse
-20 dB pad
Lowcut filter (20 Hz/12 dB oct, 40 Hz/6 dB oct)
High-impedance DI-input (>1 Mohm)
Equalizer
Three bands with variable Q
Low: 20, 30, 50 70, 100 & 160 Hz (+/- 15 dB gain)
Mid (Bell type): 40, 60, 80, 130, 250, 500 Hz, 1 kHz,
1.6, 2.5, 4, 7 & 10 kHz (+/-12 dB or +/-20 dB gain)
High: 4, 6, 8, 12, 18 & 26 kHz (+/- 15 dB gain)
MEC 1A
sound engineering
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LYDKRAFT TUBE-TECH MEC-1A Specifications

General IconGeneral
Channels1
OutputsXLR
EQ Bands3
TubeYes
InputsXLR
Frequency SelectionYes
Frequency Response20Hz - 20kHz

Summary

Product Description

Product Features

Details core functionalities like microphone preamplifier, equalizer, and compressor.

Microphone Preamplifier Features

Specifies gain, phantom power, phase reverse, pad, lowcut filter, and DI input.

Equalizer Features

Outlines EQ bands, frequency options, gain ranges, and filter types.

Compressor Features

Lists compressor type, stereo linking, attack/release, and ratio settings.

General Unit Features

Covers output gain, relays, VU meter, frequency response, noise, and power supply.

Technical Specifications

Impedance Specifications

Lists input and output impedance values for microphone, DI, and general output.

Tube Configuration

Details the types and quantities of tubes used within the unit.

Physical Dimensions

Provides the unit's height, width, and depth in metric and imperial units.

Unit Weight

Specifies the net and shipping weight of the device.

Power Requirements

States the voltage, frequency, and power consumption of the unit.

Important Notes

Contains disclaimers and conditions for the provided specifications.

Dealer Information

Contact details for the authorized dealer.

Detailed Product Overview

Overall Description

Summarizes the MEC 1A as a combined microphone preamplifier, equalizer, and compressor.

Microphone Preamplifier Details

Explains gain stages, filters, PAD, phantom power, and DI input functionality.

Equalizer Operation

Describes the EQ's shelving, bell filters, frequencies, bandwidth, and bypass.

Compressor Functionality

Details the optical compressor, its controls, and signal routing options.

Compressor Interconnection

Explains how to link multiple compressors using side chain connections.

Controls and Operation

VU Meter Functionality

Explains the VU meter's two modes: output level and compression.

Output Gain Control

Describes the output gain control for makeup gain after compression.

Microphone Preamp Controls

Details controls for gain (coarse/fine), low cut filter, phantom power, and PAD.

DI Input Details

Describes the direct input for instruments and its gain range.

Equalizer Controls Overview

Introduces equalizer controls, including low shelf gain.

EQ and Compressor Controls

Low Shelf EQ Adjustment

Details the low shelf EQ gain control and its variability.

Midband EQ Adjustment

Describes midband EQ gain, frequency selection, and bandwidth control.

High Shelf EQ Adjustment

Details the high shelf EQ gain and frequency selection.

EQ Bypass Switch

Explains the switch to engage or bypass the equalizer section.

Compressor Ratio Control

Explains the compressor ratio control and its variable range.

Compressor Threshold Control

Defines the threshold control for compressor activation.

Compressor Sidechain Bypass

Describes the switch to bypass the compressor's side chain.

Compressor Attack Control

Explains the attack control for compressor response speed.

Advanced Controls and Routing

Compressor Release Control

Explains the release control for compressor response speed.

Attack/Release Mode Switch

Details the switch for selecting fixed vs. manual attack/release.

Compressor Linking Switch

Explains the switch for interconnecting multiple compressors.

Output Gain for Makeup

Describes the output gain control for makeup gain and its range.

VU Meter Selector

Details the two positions of the VU meter selector: Compression and Output.

EQ/Compressor Routing Order

Explains the switch for routing order between EQ and compressor.

Adjustment Procedures

Power Supply Unit (PSU) Adjustment

Details DC voltage adjustments for the power supply unit.

Tube Amplifier Offset Adjustment

Describes offset voltage adjustments for tube operational amplifiers.

Gain Calibration Range

Specifies the calibration range for a specific parameter.

Basic Gain Adjustment

Provides steps for setting the basic input gain of the unit.

Gain and Compression Tracking Adjustments

Low Shelving Gain Adjustment

Procedure for adjusting the low shelving equalizer gain.

High Shelving Gain Adjustment

Procedure for adjusting the high shelving equalizer gain.

Midband Gain Adjustment

Procedure for adjusting the midband equalizer gain.

Compression Tracking Adjustment

Procedure for adjusting the compressor's tracking accuracy.

VU Meter Calibration

VU Meter Compression Reading Calibration

Procedure to calibrate the VU meter for compression readings.

Specifications Summary

Impedance Summary

Summarized input/output impedance values.

Tube Types

Lists the types and quantities of tubes used.

Frequency Response

Specifies the -3dB frequency response range.

Distortion and Noise Levels

Summarizes THD+N, noise, and CMRR figures.

Output and Input Levels

Details max output/input levels and gain ranges.

Physical Dimensions and Weight

Summarizes unit dimensions and weight.

Power Consumption

Specifies power requirements and consumption.

Compressor Specifications

Summarizes compressor ratio, threshold, attack, and release parameters.

General Notes and Disclaimers

Contains important notes and supplier disclaimers.