I'd like to build a solid state parallel effects loop that runs inside the chain of my serial tube effects loop. I'm planning on using it for delay and reverb in 'kill dry' mode. I use a volume pedal in the loop as a master volume and want to split the signal to go to the effect and then recover and mix it in with the dry signal. My goal is two-fold: 1) nice sounding parallel loop and 2)minimize the impact of the loop on the dry signal. I would like to maintain a purely resistive/capacitive dry circuit in the recovery mixer, so I'm thinking I will need some sort of hybrid mixer that is resistive on the dry side but can be solid state on the effects side. I've got a LOT of signal to work with so I can withstand about 6dB of insertion loss on the dry side of the mixer.
What is the best way to approach this? Can I simply amplify the return from the effects and feed one side of a resistive mixer? What are the sonic considerations with this approach so that the dry signal maintains its transparency?
What are the preferred resistive mixers for guitar signals in the 10 volt range? Which aspect of this circuit trumps other aspects? I'd love to use lower value resistance in the mixer to maintain signal quality but don't want to load down the return path in a way that will affect the dry tone.
The output of the mixer will be sent to a long tail pair phase inverter connected to the return jack with a capacitor, so fairly high impedance load... upwards of 20 feet of high impedance guitar cable...
I'm not looking for a simple schematic (but, hey, if this wheel is already invented...) but an identification of the problems that exist with this approach and some suggestions on how to best handle them.
Thanks, guys.
In the interest of full disclosure I may commercialize my design.
What is the best way to approach this? Can I simply amplify the return from the effects and feed one side of a resistive mixer? What are the sonic considerations with this approach so that the dry signal maintains its transparency?
What are the preferred resistive mixers for guitar signals in the 10 volt range? Which aspect of this circuit trumps other aspects? I'd love to use lower value resistance in the mixer to maintain signal quality but don't want to load down the return path in a way that will affect the dry tone.
The output of the mixer will be sent to a long tail pair phase inverter connected to the return jack with a capacitor, so fairly high impedance load... upwards of 20 feet of high impedance guitar cable...
I'm not looking for a simple schematic (but, hey, if this wheel is already invented...) but an identification of the problems that exist with this approach and some suggestions on how to best handle them.
Thanks, guys.
In the interest of full disclosure I may commercialize my design.
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