I want to add a level control to my Analog Delay...

[sevenisthenumber]

How can I do this like the Old Memory Man has? I want to have a bit of boost available so a simple output pot wont work...

[JKowalski]

Add a booster onto the output.

I would suggest an op amp booster, transparent and easy to build. If you have an op-amp free on a dual or quad then you are already set! But there is no problem with a transistor boost, if you want to try to save space.

It kind of depends on the schematic, actually, for example if you have op amps in the circuit and your signal is already riding on a Vref an op amp would be great. But if it isnt an op amp circuit and you don't have a Vref then it's probably not worth it to put all the necessary op amp circuitry in just to support that one simple boost stage.

If you want me to help anymore just share the schematic you are using and we can show you how to incorporate it.

[bean]

You can do this by placing a pot in the feedback loop of the second stage of the op-amp used for the input and output.

[JKowalski]

You can do this by placing a pot in the feedback loop of the second stage of the op-amp used for the input and output.

Ah, yeah there's probably an output op amp stage there already, huh? Considering it's an analog delay...

Forget what I said, do this - but it's probably best just to increase the gain of the stage and put a pot on the output of the effect if you plan on going all the way to dead quiet, maybe a trim pot on the gain stage to adjust the maximum level. If you only want to fiddle with the gain a little go for the pot

[sevenisthenumber]

Its a way huge AP1. Same as the Boss DM2... Usisng an mn3005. Heres the schematic:

[Fender3D]

You may raise R8 = 100K, R7=22K, and lower C4=3,3nF
You'll have basically the same frequency resonse with an increase of 6dB in signal level.
Then you may add a standard level control...

[sevenisthenumber]

awesome!

[fuzzo]

the memory man has the volume pot in the first input AOP (thing which gives that satured delay I think), placing it at output could be better.