Radial Engineering TWINLINE User's Guide

®

True to the Music

™

Twinline

Effects Loop Router

User Guide

Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam
British Columbia, Canada, V3C 5M5
Tel: [phone] • Fax: [phone]
Email: [e-mail]

www.radialeng.com

Radial® Twinline™ User Guide

Table of Contents Page

Introduction .......................................................................... 1

Front and Top Panel Features ............................................. 2

Rear Panel Features ............................................................ 3

Connecting The Two Loops ..............................................4-5

Getting Started ..................................................................... 6

Polarity Reverse and Mounting ............................................ 7

Remote Controlling the Twinline .....................................8-10

Setup Reference Page ....................................................... 11

Block Diagram .................................................................... 12

Specications ..................................................................... 13

Warranty............................................................... Back cover

Thank you for purchasing the Radial Twinline™. The
Twinline is an innovative device that enables you to route
your effects to two amps when using their rear-panel effect
loops.

As the Twinline requires a signicant number of cables and

is equipped with remote controllability, it is well worth taking
the time to read through this manual before you get started.
This will not only ensure proper connections are made, but
it will also help you optimize the signal path for best tone
and least distortion. If after you have read this manual you

still nd yourself asking about a feature or function, please

visit the Twinline FAQ page located on our website. This is
where we post answers to questions and where we often
post product updates. If you still have questions that are
left unanswered, feel free to send a note to info@radialeng.
com and we will do our best to reply in short order.

Now get ready to roll up your sleeves and start patching!

®

True to the Music

INTRODUCTION

The Twinline is basically a switcher that lets you toggle your pedalboard

and effects between two ampliers using their rear panel effects loop. In

other words, you can have one set of pedals and then route it to either
of your two amps so that you do not need to duplicate your pedalboard
setup.

AMP-A

GUITAR ABY

AMP-B

TWINLINE PEDALS

Before you start to reach for your cables, you should consider your amp
and effects setup and prepare your connections based on how you
intend to use them. Furthermore, it is good practice to turn off all of

your audio equipment and ampliers before making connections. This will

prevent plug-in or power-on transients that could damage more sensitive
components. Once you are ready, and have made the connections, you
can plug in the Twinline’s 15VDC power supply. This turns on the Twinline
as there is no power switch. A handy cable lock may be used to secure
the cable in place.

Radial Engineering Ltd.

Twinline™ Effects Loop Router

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True to the Music

FRONT PANEL FEATURES

1. AMP-A INPUT: Sets the level from the AMP-A effects loop to your
effect pedals.

2. AMP-A RETURN: Sets level from the pedals to the AMP-A effects
return input.

3. PHASE INVERT: Reverses the effects loop polarity coming back
from the AMP-A’s effect loop return.

4. A/B SELECT: Selects active amplier’s effects loop.

5. AMP-B INPUT: Sets the level from the AMP-B effects loop to your
effect pedals.

6. AMP-B RETURN: Sets level from the pedals to the AMP-B effects
return input.

7. PHASE INVERT: Reverses the effects loop polarity coming back
from the AMP-B’s effect loop return.

8. EFX ON : Used to bypass the Twinline effects loop to audition the
dry signal path.

TOP PANEL FEATURES

9. GROUND LIFT: Lifts the effects loop ground to help eliminate hum

and buzz caused by ground loops.

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Radial Engineering Ltd.

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Twinline™ Effects Loop Router

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True to the Music

REAR PANEL FEATURES

10. CABLE CLAMP: Locking cable clamp lets you secure the power

cable to prevent accidental disconnection.

11. POWER: 15VDC power connection for external power supply.

12. REMOTE JR2: TRS ¼” input connection for optional Radial JR2

remote footswitch.

13. SLINGSHOT OUTPUT: remote ¼” TS contact closure output.

14. UNBAL LOOP: Standard ¼” unbalanced guitar level effects loop

with send and receive to pedalboard.

15. UNB / BAL: Push in to select the balanced send & receive XLR

connectors.

16. BALANCED LOOP: Professional +4dB balanced send & receive

XLRs for studio effects processor.

17. AMP-B EFX LOOP: Connects from and back to the AMP-B

effects loop.

18. AMP-A EFX LOOP: Connects from and back to the AMP-A effects

loop.

Radial Engineering Ltd.

Twinline™ Effects Loop Router

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