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1. between amps There is also second input which if used will split the Amp Selector into two separate A B Both functions This is great for applications using two guitars electric and acous tic for example or a stereo signal path And we included a tuner out which gives you an additional output without loading down your guitar s tone Of course you can use this output to run a tuner but it can also drive a direct signal to a console or even chain addi tional Amp Selectors if you need more than four amps Voodoo Lab provides tone tools for the serious artist and profession al player Your Amp Selector is hand made using the finest possible components and engineered to be rugged reliable and provide the best possible tone Enjoy it www americanmusical com Overview 3d 00 x 0m0000 4 Hand made in U S A avoc A mes B A Tuner TaRU ROUND e aa ES Power Use 9VDC regulated power supply center negative Inputs Connect from guitar or pedalboard out Tuner Out Driven from Input A for tuner or other slave Ground Lift Switches Normally ON to ground amplifier Amp Outputs Connect to amplifier inputs 3 ams 2 1 ae Note Plugging into Input A powers up the Amp Selector Unplug this cable when not in use to preserve the battery n a VooDoo LAB AMP SELECTOR Vem A a 2 3 4 Q Q Q Q o 6 6 Level Controls Control output volume to ba2. exclusive You can select the on off amps in any combination but selecting the exclusive amp turns all others off Likewise selecting any on off amp while the exclusive amp is selected will turn it off Following the instructions below under PROGRAM set only this amp s out to exclusive and the remaining 3 outs to on off Exclusive Group If you have 2 or more amps that are never layered with each other you can make them an exclusive group Now when you select a new amp within the exclusive group the old amp is automatically turned off Any amp set to on off can still be manually selected and layered with the amp in the exclusive group Following the instructions below under PROGRAM set each of these outs to exclusive and any remaining out s to on off www americanmusical com Program To enter the Amp Selector s programming mode do the following 1 Power off the unit by unplugging the cable in Input A 2 Press and hold button 1 while powering on by inserting the cable into Input A 3 All LEDs will flash to indicate you re now in programming mode Now you can select on off or exclusive mode independently for each output Pressing each button will toggle the mode LED Off On off mode LED On Exclusive mode To exit programming mode and return to normal operation simply power the Amp Selector off by removing the cable in Input A TIP For a complete list of the most common setups and how to program them check out www v
3. lance amps 7 Amp Select Buttons Turn individual amps on off 8 Status LEDs Illuminates to show active amp The Voodoo Lab Amp Selector s inputs drive a pair of ultra trans parent buffer amplifiers These amplifiers input characteristics have been carefully matched to that of a traditional vacuum tube guitar amp This insures that your guitar pickups will see the correct www americanmusical com load and therefore sound their best Using a buffer amplifier is what allows us to drive multiple amplifiers and a tuner without excessively loading your guitar and destroying your tone Each amplifier output is coupled using a high quality shielded and sealed transformer Isolating each output with a transformer is what breaks the ground paths between amplifiers Without this current would flow through ground loops causing your amps to hum In addition we have developed a proprietary matching technique to drive the transformers By carefully matching impedances and component values we are able to greatly improve the performance of the transformer The result is a true super accurate sound without any loss of tight low end response The Tuner output provides a copy of whatever goes into Input A This is a non isolated slave output for a variety of purposes It is always active regardless of amp switching status Typical uses would be to drive a tuner direct out for recording or to chain additional Amp Select
4. oodoolab com ampselector htm Ground Problems You should always start with all of the Amp Selector s Grounds Lift switches in the ON position This means the output is grounded If the amp is humming the first place to look is if there is a two or three position ground switch on the amplifier itself Try each posi tion of the amp s ground switch to find the least hum If the amp continues to hum then try switching the Amp Selector Ground Lift to the OFF position This now isolates that output Then try each position on the amp s ground switch again to find the least hum If you are still having problems make sure that all amplifiers are powered from the same power source Outlets in different parts of a room can have significantly different ground potentials making it more difficult to find settings that are hum free Since ground connections in a multi amp setup can get complicated www americanmusical com you may need to experiment a bit with different combinations of settings to find one which keeps all the amps from humming Warranty Voodoo Lab warrants this product against defects that are due to faulty material or workmanship for a period of five years from the date of original retail purchase This warranty does not include damage to the product resulting from accident or misuse This warranty is given to the original purchaser only and it is not assignable to any other person If the product should become defective wi
5. ors Individual level controls allow you to conveniently balance volumes of each amp Normal position is about 3 o clock At maximum they will provide a very small amount of boost Any significant volume changes should be done with the level controls on your amp itself In normal operation the amp select buttons simply toggle each amp output on and off Check out the Operation section of this manual for programmable switching options www americanmusical com Connections Connect the output of your guitar into Input A of the Amp Selector If you are using pedal effects in front of the amplifier then connect from the output of your last pedal into Input A of the Amp Selector Connect Amp Outs 1 2 3 and 4 to the inputs of each of your amplifiers Initially set each of the Amp Selector s Ground Lift switches to the ON position If you are going to use two guitars or the other channel of stereo effects simultaneously with different amps you can connect the 2nd guitar into Amp Selector Input B If you do this the Input A instrument will only access amps 1 and 2 and the Input B instru ment will only access amps 3 and 4 Power The Amp Selector can be powered either by its internal 9V battery or an external power source The battery compartment is on the bottom of the unit Use a Phillips head screwdriver to remove the single screw holding the battery cover in place The external power jack requires a regulated 9VDC power
6. source The connector polarity must be center negative The best choice to power your Amp Selector would be with a Voodoo Lab Pedal Power It will also work fine with other 9VDC regulated adapters such as the Boss PSA Powering the Amp Selector on and off is done via the input jack just like most pedal effects Insert a cable into Input A to power on Remove it to turn the power off If you are powering the Amp Selector with a battery always remember to disconnect the Input A cable to preserve battery life www americanmusical com Operation On Off Mode The default switching method of the Amp Selector is what we call on off mode In on off mode each of the four buttons 1 through 4 simply toggle the corresponding amp output on and off Using on off mode is a good choice 1f you want maximum flexibility to switch or layer amps Exclusive Mode Unlike on off mode which requires two button presses to switch between amps one to turn the old amp off then a second to turn the new amp on Exclusive mode lets you change amps instantly with a single button press Each output can be individually configured for on off or exclusive mode By setting only one of the 4 outs to exclusive Amp Selector will operate in what we call single exclusive If you set 2 or more outs to exclusive those outs form an exclusive group Single Exclusive If one of your amps is always played alone basically never layered with others you should use single
7. thin the warranty period Voodoo Lab will repair it or replace it free of charge provided it is returned freight prepaid to Voodoo Lab with a valid RMA return material authorization number This warranty shall not apply to any goods that have been repaired or altered by anyone other than the manufacturer There are no warranties which extend beyond the terms described herein Should you experience any difficulty with this Voodoo Lab product contact us as described below If it is determined that the product must be returned to the factory for repair you will be issued an RMA and given shipping and packaging instructions How to Reach Us You can reach us by any of the following Mail Voodoo Lab 3165 Coffey Lane Santa Rosa CA 95403 U S A Tel 707 545 0600 Fax 707 545 9777 Email info Wvoodoolab com Website www voodoolab com
8. www americanmusical com n_n Voopoo LIAB BO RETRO se AMP SELECTOR USER S MANUAL Please visit our web site at www voodoolab com www americanmusical com Copyright 02007 by Voodoo Lab This publication is protected by copyright and all rights are reserved No part of 1t may be reproduced or transmitted by any means or in any form without the express prior consent in writing from Voodoo Lab www americanmusical com VOODOO LAB AMP SELECTOR User s Manual Introduction The Voodoo Lab Amp Selector is the ultimate stand alone tool for switching your guitar into multiple amplifiers It lets you use up to four amps simultaneously without added hum or loss of tone You can switch between them or layer them in any combination The switching is absolutely silent with no clicks or pops If you play multiple amplifiers this is what you ve been waiting for The Amp Selector s unique programmable switching lets you tailor its operation to your own playing style On off mode allows you to operate it as four independent on off controls Or exclusive mode means that whichever button you select only that amplifier is active This permits you to change amps with only a single button press no need to first turn one off and then another on You can even use both modes simultaneously to provide one touch control yet still select an additional amp for layering Level controls for each output provide a convenient way to balance the volume
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