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Radial Engineering Ltd.

Voco-Loco™ Preamp Loop

True to the Music

®

1

OVERVIEW

The Voco-Loco is a mic-to-effects interface that enables the vocalist, sax, 
trumpet or harmonica player to use pedals just like an electric guitarist. 
In other words, you connect your microphone to the Voco-Loco and it 
converts the signal so that it may be used with guitar pedals. The signal 
is then sent to the PA system where it is processed as usual.

OVERDRIVE

YOUR MIC

PA SYSTEM

YOUR EFFECTS

CHORUS

DELAY

You simply prepare the effects in advance by turning on an echo and a 
chorus pedal and when ready, engage the pedal chain by depressing 
the effects loop footswitch. When the song is over, you stomp on the 
footswitch again to turn off the effects. In between songs you set up the 
next effect with your pedals on standby, ready to be engaged as needed. 

The cool thing about using the Voco-Loco with a variety of pedals is 
you can decide which effects you want to use for a given solo without 
having to necessarily follow a given path. This fl exibility opens the door to 
unique and creative effects which can enthrall an audience during a live 
performance or spur on creativity when you are jamming. 

Understanding the signal fl ow

Following the block diagram below, the microphone feeds a studio quality 
mic preamp which then feeds a 2-band EQ. This is used for tone shaping 
the dry mic signal. The balanced signal is then converted to a ¼” hi-z 
output that is suitable for guitar effect pedals. Separate send & receive 
controls let you optimize the signal-to-noise and eliminate distortion. The 
output of the effect pedals is then brought back into the Voco-Loco where 
you adjust the tone and blend the original dry signal with the effects for 
the ideal mix. The fi nal mix is then sent to the PA system via the balanced 
XLR output. 

MIC INPUT

+48V

MIC PREAMP

2-BAND EQ

SEND LEVEL

RECV LEVEL

TONE

DRY/WET MIX

EFFECT

XLR LINE OUT

Summary of Contents for Voco-Loco

Page 1: ...adialeng com True to the Music User Guide Radial Engineering Ltd 1588 Kebet Way Port Coquitlam British Columbia Canada V3C 5M5 tel 604 942 1001 fax 604 942 1010 email info radialeng com Voco Loco Mic...

Page 2: ...ay have never used guitar effect pedals so this will be new to you If on the other hand you are a guitarist who also sings this may be old hat Either way please take a few minutes to read through this...

Page 3: ...out using the Voco Loco with a variety of pedals is you can decide which effects you want to use for a given solo without having to necessarily follow a given path This flexibility opens the door to u...

Page 4: ...WER Connection for the 400mA 15VDC power supply 8 MIC IN Sets the input level of the Voco Loco s mic preamp section 9 LOW HIGH Dual band EQ used to adjust the tone of your mic 10 SEND RECV Individual...

Page 5: ...ing the rear panel switch This is recessed in order to prevent accidental turn on which could cause a loud pop in the PA system Use a small screwdriver to activate the phantom power The 48V LED indica...

Page 6: ...hoot should something not be connected or working properly Using an effect such as a delay or chorus is usually a good place to start as you can easily gauge if the Voco Loco is overdriving the effect...

Page 7: ...ation when mixed with the original dry signal NORMAL POLARITY INVERTED POLARITY PHASE CANCELLATION This is common with guitar effect pedals as manufacturers rarely pay attention to absolute phase If t...

Page 8: ...t loop either on or off as you like while the output is muted Using the all wet mode Whe the MUTE LOOP switch is pushed inward the left footswitch engages the all wet mode Used in the all wet mode the...

Page 9: ...ned with an amp that was driven hard created a very natural sounding distortion Overdrive pedals generally produce less distortion than the others Using the Voco Loco with modulating effects Pedals th...

Page 10: ...eate monster effects or harmonics Voco Loco with envelopes filters Wah wahs are basically narrow band EQ s with accentuated mid frequencies The foot controller lets you change the center frequency to...

Page 11: ...und Pin 2 Pin 3 Power 15VDC 400 mA XLR Configuration Follows AES spec pin 1 ground pin 2 pin 3 Warranty 3 Years transferable SPECIFICATIONS BLOCK DIAGRAM MIC INPUT STAGE EFFECTS LOOP AND MIX XLR INPUT...

Page 12: ...iginal invoice showing date of purchase and the dealer name must accompany any request for work to be performed under this limited and transferable warranty This warranty shall not apply if the produc...

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