Author Topic: Need Advice - Custom Analog Delay with Boost  (Read 342 times)

Bio77

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Need Advice - Custom Analog Delay with Boost
« on: November 12, 2023, 12:53:59 PM »
I recently got to meet the guitarist of a band I'm super into, and offered to make him a pedal.  So, he is currently using a MXR Carbon Copy set with a short slap-back delay.  He uses it for lead sections of songs.   He mentioned that it was a too clean sounding.  The other ask was that he used to have a MXR Micro Amp and would turn on both for leads.  He ditched the micro amp because hitting both pedals was distracting. 

My plan was to build an Aqua Baby (DM-2) and add the micro amp or other clean boost inline so both are activated by one foot switch.  So, since the clean sound was a problem, I'm wondering if a preamp would be a better choice?  Or maybe a transistor based boost?  What do you guys think?

jessenator

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #1 on: November 12, 2023, 01:54:33 PM »
I'm not familiar with the input section of the dm-2 and how it would react, but with other circuits I've had great experiences with the lpb-1 style boost. Happy to chuck you a pot-sized-footprint pcb gratis if you want.

jimilee

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #2 on: November 12, 2023, 04:32:08 PM »
I would think you’d want the DM-2 first you avoid a hot signal going in to it.


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Bio77

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #3 on: November 12, 2023, 06:02:08 PM »
Thanks guys!  8)

I'm not familiar with the input section of the dm-2 and how it would react, but with other circuits I've had great experiences with the lpb-1 style boost. Happy to chuck you a pot-sized-footprint pcb gratis if you want.
That would be cool, thanks!  Let me figure out how I'm going to box it.  I was thinking of fabbing a foot switch version if the parts count was low enough. It would be handy.

I would think you’d want the DM-2 first you avoid a hot signal going in to it.
I was thinking that too,  I'll mess with every thing outside of the box before I commit. 

madbean

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #4 on: November 12, 2023, 06:34:04 PM »
You could possibly adapt the DM-2 input to replace the Si buffer with a JFET boost, and make the boost part a pot or switch. But, there's no ready made sort of project that I know of that does so. It's an interesting idea, for sure.

Bio77

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #5 on: November 12, 2023, 07:26:02 PM »
Thanks, Brian  8)  I'm going to try breadboarding some stuff and combine it with the AB.  I have a couple of populated boards that need a home.  Not sure, I want to mod the working ones, might try the LPB-1 first. 

Aentons

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #6 on: November 12, 2023, 09:27:12 PM »
I have an EHX Deluxe Memory Boy and it has a gain knob that is boost after delay, maybe check that one out.
« Last Edit: November 12, 2023, 09:29:21 PM by Aentons »

Bio77

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Re: Need Advice - Custom Analog Delay with Boost
« Reply #7 on: November 13, 2023, 09:07:26 AM »
Thanks, I will definitely check that out.