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Tube-Town LND150 FX-Loop - User Manual

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LND150 FX-Loop
Serial FX-Loop
PCB Version V1-Rev C – Date: 19.06.2019
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Summary

Introduction, Hints, and Warnings

Introduction

Active effect loop retrofit kit for guitar/bass tube amplifiers, powered by amplifier's supply voltage.

Hints

Disclaimer on liability for use/installation errors. Installation must be by qualified personnel only.

Warning

Module operates with potentially fatal voltages. Not for beginners; requires schematic reading & high voltage experience.

Specifications and Layout

Specification

Details input signal levels (InB/InA), maximum input, and supply voltage range (250-400 VDC).

Layout and Connections

Visual guide to PCB layout, component placement, and connection points for signal and power.

Physical Dimensions and Mounting

PCB Size

Physical dimensions of the FX-Loop PCB (84.00 mm x 56.00 mm) for chassis mounting.

Mounting

Illustration showing recommended spacing for mounting components or the PCB itself.

Component List

Integration Guidance

General hints for integration

Advice on adjusting the input voltage divider for optimal performance and signal level.

Input Voltage Divider

Table of resistor combinations for input voltage divider, resulting ratios, and note on optional capacitor C7.

Installation Examples

Insert Example I

Example installation of the FX-Loop between tonestack and master volume in an 18 Watt amplifier.

Insert Example II

Example installation of FX-Loop before master volume in a Jim HP amplifier, recommending R14 values.

Advanced Features

True Bypass

How to implement true bypass for the FX-Loop using a switch or relay kit when the loop is not in use.

Loop in parallel mode

Instructions for rewiring the FX-Loop for parallel operation, mixing dry and effect signals, with phase note.

Test Points

Tube-Town LND150 FX-Loop Specifications

General IconGeneral
BrandTube-Town
ModelLND150 FX-Loop
CategoryControl Unit
LanguageEnglish