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DIY Stompboxes => Building your own stompbox => Topic started by: sjaltenb on December 22, 2007, 11:53:01 PM

Title: will tapping my input jack for a tuner result in signal loss?
Post by: sjaltenb on December 22, 2007, 11:53:01 PM
Hello,

I am trying to figure out how to add a tuner to my Cornish board. I want to have a "Tuner out" jack. If i simply solder a wire to the tip of my input jack and run it to my tuner out jack, will that degrade the input signal any? I will have a buffer right after the fuzz (my first effect)...

Thanks!
Title: Re: will tapping my input jack for a tuner result in signal loss?
Post by: R.G. on December 23, 2007, 12:37:25 AM
Any loading whatsoever will cause some signal loss. Whether you will notice it or not is not easy to tell ahead of time.

Since fidelity is not too big an issue with a tuner, it would make sense to have the input jack feed your effects and in parallel a very high input impedance buffer. The buffer would drive the tuner. Something like a FET input opamp with a bootstrapped input bias feed should do it.
Title: Re: will tapping my input jack for a tuner result in signal loss?
Post by: Auke Haarsma on December 23, 2007, 06:30:08 AM
You could use the AMZ Buffer-Splitter for that: http://www.muzique.com/lab/splitter.htm
Title: Re: will tapping my input jack for a tuner result in signal loss?
Post by: Roobin on December 23, 2007, 08:13:37 AM
Just found this: http://www.stinkfoot.se/andreas/diy/articles/tunout.htm (http://www.stinkfoot.se/andreas/diy/articles/tunout.htm)