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Manley VOXBOX - User Manual

Manley VOXBOX
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MANLEY LABORATORIES, INC.
13880 MAGNOLIA AVE.
CHINO, CA 91710 USA
TEL: +1 (909) 627-4256
FAX: +1 (909) 628-2482
www.manley.com
MANLEY
VOXBOX
OWNER’S MANUAL
TUBES
RULE
REV. MVBXXAxxxx
rev4/2015/zf

Questions and Answers

Summary

INTRODUCTION

GENERAL NOTES

Covers essential operational points including location, ventilation, water hazards, and servicing advice.

QUICK START CONFIGURATIONS

MIC INPUT SETUPS

Guides on connecting microphones using all sections or just preamp/compressor.

LINE INPUT SETUPS

Guides on connecting line-level sources using all sections or specific parts.

MAINS CONNECTIONS AND SAFETY

WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

Information for customers on the proper disposal of electrical and electronic equipment.

FRONT PANEL CONTROLS

INPUT AND GAIN STAGE

Details on Instrument Input, Input Level, and Gain Switch for signal conditioning.

MIC PREAMP AND METERING CONTROLS

Covers Phantom Power, Low Filter, Phase Switch, and VU Meter functions.

COMPRESSOR SECTION

COMPRESSOR OPERATION AND BYPASS

Explains the bypass function and core compressor controls like Threshold, Attack, and Release.

STEREO LINK FUNCTIONALITY

Details on linking two VOXBOX units for stereo operation of compressors and de-essers.

EQ AND DE-ESSER SECTION

EQ INPUT AND BYPASS CONTROLS

Covers EQ input selection, EQ bypass, and the overall EQ section.

EQ FREQUENCY AND LEVEL ADJUSTMENTS

Details on Low Peak, Mid Dip, and High Peak frequency and boost/cut controls.

DE-ESSER AND LIMITER CONTROLS

Explains De-Esser Bypass, Select, Threshold, and the Power indicator.

REAR PANEL CONNECTORS

POWER AND GROUND CONNECTIONS

Details on IEC power connector, mains fuse, and ground terminals for hum reduction.

AUDIO INPUT AND OUTPUT JACKS

Covers MIC INPUT and LINE INPUT connectors and their pin-outs.

REAR PANEL CONNECTORS

LINE INPUT AND PREAMP OUTPUTS

Details LINE INPUT (XLR) and PREAMP OUT (Phone/XLR) connections.

INSERT AND EQ OUTPUTS

Covers INSERT INPUT and EQ OUT connectors for signal routing and final output.

REAR PANEL CONNECTORS

LINK AND SERIAL NUMBER INFO

Details LINK COMPRESSOR/DE-ESSER RCA connections and serial number recording.

OVERVIEW AND BLOCK DIAGRAM

SIGNAL FLOW EXPLANATION

Describes the signal path from input stages through compressor, EQ, and de-esser.

MIC PREAMP & COMPRESSOR DETAILS

PHANTOM POWER AND OPERATIONAL TIPS

Covers phantom power, mic placement, grounding, and phase switch usage for optimal sound.

MIC PREAMP & COMPRESSOR OPERATION

LOW FREQUENCY FILTER AND INPUT CONTROLS

Details on the low-cut filter and the main input level control for signal adjustment.

COMPRESSOR OPERATION AND USAGE

Explains compressor controls (Attack, Release, Threshold) and techniques for optimal compression.

EQ & DE-ESSER SECTION OPERATION

EQ INPUT SELECTION AND PULTEC DESIGN

Explains EQ input routing and the passive Pultec-style EQ circuit with frequency bands.

EQ TECHNIQUES AND ADJUSTMENTS

Provides advice on EQ techniques, mic choice, and adjustments for Low Peak, Mid Dip, High Peak.

EQ & DE-ESSER SECTION OPERATION

EQ FREQUENCY ADJUSTMENTS AND DE-ESSER FUNCTION

Details EQ adjustments and the de-esser's notch filter, threshold, and limiter mode.

DE-ESSER USAGE AND SIDECHAIN LINKING

Discusses optimal de-essing times, linking units, and using the de-esser link output.

EQ & DE-ESSER SECTION OPERATION

SIBLANCE PREVENTION AND EQ;DE-ESSER INTERACTION

Advice on preventing sibilance, gear choice, and combining EQ cuts with de-essing.

DE-ESSER METERING AND LINKING

Explains how to use the DS meter and the function of the compressor/de-esser LINK switch.

ADDENDUM AND USER FEEDBACK

UNEXPECTED APPLICATIONS AND UPDATES

Shares user feedback, tour usage, and technical circuit revisions from 2000.

EQ INPUT TOGGLE CLARIFICATION

Addresses common confusion regarding the 3-position EQ INPUT toggle switch and its routing.

TUBE AND TRIM LOCATIONS

TUBE TYPES AND SUBSTITUTION GUIDELINES

Lists recommended tubes for stages and notes on identifying faulty tubes.

DIP SWITCH FUNCTIONS AND FACTORY CALIBRATION

Describes DIP switch functions and notes on factory-set trims.

CALIBRATION PROCEDURE

TOOLS, SETUP, AND POWER VOLTAGES

Lists required tools, setup, and regulated DC power supply voltages for calibration.

STEP-BY-STEP CALIBRATION PROCESS

Detailed instructions for adjusting trims for EQ, compressor, and de-esser/limiter calibration.

TROUBLESHOOTING GUIDE

POWER, SOUND, AND LEVEL ISSUES

Addresses problems like no power, no sound, incorrect levels, and dead channels.

HUM, NOISE, AND GROUND LOOP RESOLUTION

Offers methods to diagnose and eliminate hum, noise, and ground loop issues.

TROUBLESHOOTING GUIDE

TUBE AND DISTORTION ISSUES

Explains causes and solutions for microphonic tubes, signal hiss, and distortion.

METERING AND LEVEL INTERPRETATION

Covers output issues, meter calibration, and understanding digital vs. analog levels.

TECHNICAL SPECIFICATIONS

PREAMPLIFIER AND EQ SPECIFICATIONS

Details output levels, headroom, THD, frequency response, and input impedance for both sections.

UNIT OVERALL SPECIFICATIONS

Covers general specs like power consumption, fuse type, dimensions, and weight.

ACTUAL EQ CURVES

HIGH FREQUENCY EQ CURVE ANALYSIS

Illustrates EQ curves for 12kHz and 20kHz, noting their unique shapes for musical reasons.

MORE VOXBOX CURVES

COMPRESSOR AND LIMITER CURVE ANALYSIS

Displays curves for compressor (3:1) and limiter (5:1 to 10:1) thresholds.

DE-ESSER NOTCH DEPTH ANALYSIS

Shows the notch depth curves for de-esser frequencies at 3kHz and 12kHz.

SETTING STORAGE TEMPLATES

USER SETTING TEMPLATES

Blank templates for recording artist, song, mic notes, and engineer details for session recall.

Manley VOXBOX Specifications

General IconGeneral
TypeChannel Strip
Microphone PreampYes
CompressorYes
EqualizerYes
De-esserYes
Channels1
TubeYes
Phantom PowerYes
Polarity ReverseYes
High Pass FilterYes
InputsXLR
OutputsXLR
Dimensions19 x 5.25 x 10 inches