RJM Y-Not Bedienungsanleitung

Y-Not™

User’s Manual

RJM Music Technology, Inc.

Y-Not™

User’s Manual

Version 2.0

July 14, 2014

RJM Music Technology, Inc.

2525 Pioneer Ave #1

Vista, CA 92081

E-mail: [email protected]

Web: www.rjmmusic.com

Amp Gizmo, Effect Gizmo, Mini Amp Gizmo, MasterMind, RG-16,

Y-Not and the RJM logo are trademarks of

RJM Music Technology, Inc.

Table of Contents

INTRODUCTION 1!

FRONT PANEL 2!

BACK PANEL 4!

PHASE INVERSION 5!

MIDI USAGE 6!

Continuous Controllers 7!

Bank Selection 7!

SETUP MODE 8!

Selecting MIDI Channel 8!

Saving MIDI Channel 8!

Selecting Other Options 8!

Switch Invert 9!

Bank Select Enable 9!

Saving Options 9!

Factory Reset 9!

TROUBLESHOOTING 10!

SPECIFICATIONS 11!

Introduction

Thank you for purchasing a Y-Not. This product is designed to

provide all of the features you need to switch one audio signal to two

audio outputs, while being able to address the common problems

that can occur in a two-amp system. The Y-Not features a high-

quality buffer, a phase inversion switch and an isolation transformer

all in a compact package.

The Y-Not can be controlled by its front panel switches, by an

external footswitch, or by an external MIDI controller, making it

adaptable to virtually any situation.

In this revision of the Y-Not, some features have been added. The first

is MIDI controlled phase inversion on the B output. This comes in

handy if you are using two channel switching amps at the same time.

Different channel combinations will have different phase

relationships, and the ability to switch phase will insure that each

combination sounds good.

There is also now a TRS Inswitch. This switch is designed to work

specifically with electric guitars that have piezo pickups. These

guitars typically send both signals over one TRS (tip-ring-sleeve)

cable. Pressing the TRS In switch will allow the Y-Not to use both

signals, sending the tip to the A output and the ring to the B output.

With this arrangement, you can use the Y-Not to select whether your

magnetic or piezo signal is active, and send the signals to separate

amps.

Front Panel

Buffer – When this button is in, the input signal will go through a

high-quality audio buffer. A buffer lowers the impedance of the input

signal, making it “stronger” and preventing it from losing treble or

signal level when splitting the signal to two outputs. When this

button is out, the buffer is disconnected from the signal path.

If you find your signal sounds dull or muted, try engaging the buffer.

Unless your signal is already buffered, you will likely want to use the

buffer when using the Iso B button or if the B output is inverted (see

below).

Iso B – When this button is pressed in, it inserts an isolation

transformer in front of the B output. The isolation transformer breaks

ground loops between the two amps. Ground loops are a common

occurrence when using more than one amp, and you can tell you

have a ground loop if you hear an unusually large amount of hum or

buzz from your amps. Pressing the Iso B button should break the

ground loop and eliminate the hum.

TRS In – Pressing this button switches the input jack to accept a TRS

(tip-ring-sleeve) or stereo input. When engaged, the signal from the

input tip conductor will only be sent to the A output, and the signal

from the ring conductor will only be sent to the B output. This is

typically used for electric guitars with piezo pickups – each pickup’s

signal can be sent to a different amp, and can be turned on and off

independently.

A – This button turns the A output on and off. When this button is lit,

the A output is on. When this button is not lit, the A output is off

(shorted to ground).

B – This button turns the B output on and off, and also inverts the B

output. Pressing the button cycles through three states:

Red – The B output is on and is not inverted.

Orange – The B output is on and is inverted. In this mode,

the signal should be buffered. Otherwise, it may sound dull.

Off – The B output is turned off (shorted to ground).

Write – When held down for 3 seconds, this button saves the current

switch state to non-volatile memory. This function is not active until

a Program Change message is received at the MIDI In jack. See the

MIDI Usage section for more details.

The Write button is always lit up with a green LED to indicate that the

Y-Not is powered on.

Back Panel

Power – This unit requires a 9 volt DC power supply (center negative

polarity). The plug should be a 5.5mm/2.1mm barrel connector,

similar to those used in most effects pedals. The Y-Not requires a

minimum 100mA of current.

MIDI In – Jack for incoming MIDI commands. Connect your MIDI foot

controller or other MIDI device here.

Switch – You can connect a two-button footswitch or other external

switching device to this jack. The tip conductor of this jack turns the

B output on when shorted to ground, and the A output on when not

shorted to ground. The ring conductor, when shorted to ground,

turns on both the A and B outputs simultaneously. This switch jack

does not change the state of the B output’s phase.

Input – Connect your input signal (guitar or other audio signal) here.

A– This is the first (A) output from the Y-Not, controlled by the A

switch on the front panel.

B– This is the second (B) output from the Y-Not, controlled by the B

switch on the front panel.

Phase Inversion

Any time two amps are used together, it’s important to insure that

the phase of the two amplifiers is correct. The phase relationship of

the amps depends on the position of each amp and their individual

design.

If the two amps are out of phase with each other, you may hear

phase cancellations, resulting in poor tone or diminished volume

levels. Inverting the phase of one amp will fix the phase cancellations

and create a more desirable sound.

Phase can also be an issue when using the Y-Not to connect to two

different inputs of the same amp. Certain amps have a phase

inversion between the two inputs, making it impossible to run both

inputs at once – unless you have a way to invert the phase of one

signal. If you’re running the Y-Not with a two input amp and notice a

volume decrease when running both inputs simultaneously, try

inverting the B output - it should resolve the problem.

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