Tuesday, September 8, 2015
EMMA ReezaFRATzitz
The ReezaFRATzitz is a high gain overdrive/distortion circuit based around a CMOS chip, most likely a CD4069N or 74HCU04. This layout reflects a modded version by FreeStompboxes member thn.technik with added Bass and Mids controls. Here's a link to his schematic and build pics. You might be able to squeeze it into 1590B, but you'd probably be more comfortable in a 1590BB. This is not originally a true-bypass effect. As you can see in the layout drawing, there is a "Clean Out" and a regular, or "Effect Out." The signal comes in from the input jack directly to the board and into the buffer. From there a DPDT footswitch switches between the Clean Out and Effect Out. If you prefer true-byass, you can ignore the Clean Out pad and just wire this like you normally would. You can then eliminate the 150n cap and 470k resistor from the Clean Out pad. Here's a demo of the original:
OH YEAH!!!!
ReplyDeleteThanks a lot!!!!!!!!!!!!!!!! :D
:D Just for you, buddy!
Deleteawwwwhhh, you spoil me.... :)
Deletei've had soooo many requests for this on
ReplyDeleteGreat job.
ReplyDeleteThank you.
What do you recommend for Q1: BC238A, BC238B or BC238C ?
A for hFE 120 ~ 220
B for hFE 180 ~ 460
C for hFE 380 ~ 800
B or C would be fine. That's for the input buffer, so really any medium to high gain NPN should be fine. 2N3904, 2N5088, etc. Whatever you've got lying around.
DeleteThank you.
DeletePlease, what is the value of the bias potentiometer?
ReplyDelete10k
DeleteThank you so much
DeleteThis comment has been removed by the author.
ReplyDeleteChecked!
DeleteI tried using true bypass but was quite whistle.
I put a link to the original and was not whistled otimo more, some potentiometers are reversed.
Thanks.Desculpe the English.
Excellent sound and no background as the original at maximum Gaine. Thank you for a great layout, you are the best.
ReplyDeleteWhat is the difference of this layout with this one? http://tagboardeffects.blogspot.com/2012/10/emma-reezafratzitz-rf1.html
ReplyDeleteIt seems the gain pot lies most likely on the 14th pin of the IC while on this one goes on the other side? Same goes with level pot...
If you look at the 4069 datasheets there are several in and outs. This layout just uses different ins/outs than the vero. Still works the same way though and it's verified.
DeleteThank you for clearing this up...great layout
Deleteyou made by far the best layout available for the ReezaFRATzitz, i've tried all of them and your's is by far my favorite
ReplyDeleteThanks!
DeleteHi,
ReplyDeleteI'm about to try to build this. Could you tell me whether these EQs work as active or passive?
Passive
Deletethanks a lot for the reply.
DeleteI just find here, only the 4069UBE. Any problem?
ReplyDeleteI got not enough gain. I feel like chords are OK but single notes has some decay and feels farty even when bias at max, almost 8.62v. I checked all the values, any help? Increasing to 1m gain pot will increase distortion?
ReplyDeleteNote to myself, after one week testing every component I found with an auidoprobe some weak signal after gain pot, wire 1 and 2 from gain pot were inverted. Problem solved. CD4069UBE rules after some MC14069.
DeleteSounds great! Thanks!Made with mullard tropical fish, old carbon composition and CD4069UBE. Nice job!fabulous page!!
ReplyDeleteThere's one member of this family missing: https://www.freestompboxes.org/viewtopic.php?t=11417&start=40 Would be great to also have a good PCB layout for this. :-)
ReplyDelete