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DIY Stompboxes => Building your own stompbox => Topic started by: maiko on April 27, 2017, 10:20:47 PM

Title: Carl Martin Plexi Lt1054 sub
Post by: maiko on April 27, 2017, 10:20:47 PM
http://effectslayouts.blogspot.com/2017/03/carl-martin-plexi-tone.html

Thinking about building that but was wondering regarding the LT1054 would i be able to
substitute a icl7660s for that.    basing on the pinouts it looks like its a direct replacement

any inputs greatly welcomed and grateful for. 
Title: Re: Carl Martin Plexi Lt1054 sub
Post by: bluebunny on April 28, 2017, 02:44:04 AM
I believe the function of pin 1 is different in each chip.  It's unconnected in this schematic using the LT1054.  If you use the 7660S, then you need to connect pin 1 to pin 8 to avoid an audible whine.
Title: Re: Carl Martin Plexi Lt1054 sub
Post by: maiko on May 03, 2017, 04:04:52 AM
Thanks for the reply


I really sorta want to build this one but the charge pump things got me worried.