DIODE SELECTION
Ge would make envelope detection more sensitive, but the circuit is already plenty sensitive; Ge is also temp-unstable, so for curiosity sake, try Schottky.
AS THE CIRCUIT CAN BE A BIT JUMPY...
I WILL ADD A LIMITER, possible solutions:
ELS Fast Audio Peak Limiter - Elliott Sound Products
ELS PIRA
SA571 Compandor
ELS Ultra Simple Bass Guitar Compressor
VOX amp SS limiter [find the schematic!]
DOD FX25 LOWPASS MOD:
BONGOMANIA:
Use the limiter on your amp, or add a limiter pedal. I am a huge fan of the fx25,
but I wouldn't use it without a limiter.
…
Actually the volume drop is a problem that happened commonly with all versions of this pedal, and the best I've been able to determine so far is it is a component gone bad. A properly-working fx25 (all versions) has no volume drop, but a LOT of them are not working properly.
…
The deal with the sensitivity knob is it is entirely dependent on the output of your bass. One bassist may find it is way too sensitive, so they sell it, and the guy who buys it finds it is not sensitive enough. Different output levels from their basses and playing styles.
READ: Compression and Limiting in Guitar pedals AMZ
https://groupdiy.com/index.php?topic=53391.0
Hey Peterson, Mictester's "Really Cheap Compressor" might be a source of inspiration. It's designed for guitar but a doubling of the RC networks' cap values would extend the bass response.
http://www.aronnelson.com/gallery/main.php/v/johan_0/LA_Light_last_one_001.gif.html
http://experimentalistsanonymous.com/diy/Schematics/OOP Japanese Electronics Book/LED-LDR-comp.gif
http://geograffff.chat.ru/schemes/comp/whispCom.gif
http://sslstudiodesign.free.fr/DIY/COMP/comp.gif
http://www.diystompboxes.com/smfforum/index.php?topic=89110.0
JARED LASH —
https://www.talkbass.com/threads/envelope-filter-for-low-tunings.1511511/page-2#post-25159954
I love the DOD FX25 but it has a VERY wide sweep and thins out considerably when the filter fully opens. I had to use a blender (later versions had a built in blend but it sucked) to not disappear in the mix.
I'd say to check out the Mr Black Fwonkbeta.
It wasn't my favorite filter but for downtuned neo soul stuff it's got a big, greasy envelope that would work well and not thin things out.
In general I'd be looking at low pass filters but a band pass filter with a blend (like the MXR) could also work depending on how it's set.
LOKKI :
https://www.diystompboxes.com/smfforum/index.php?topic=77370.0
ATTACK!
https://www.diystompboxes.com/smfforum/index.php?topic=77370.20
[DONT BOTHER WITH ATTACK BECAUSE…]
HAMMER:
"
Decay on an envelope-governed circuit is a bit like an alley-cat: if you keep feeding it, it won't go away. As a result, despite being far more effective in my experience than unbuffered attack mods, it is easy to mistakenly interfere with a good decay mod. If one lightly mutes the strings with the butt of your picking hand, you'll find that the decay mod results in clearly audible differences in sweep.
None of that is to take away from the value of a good attack-time mod. The trouble is that, in most unbuffered contexts (which the FX-25 is) it is difficult to achieve audibly different attack times without detracting significantly from the sensitivity of the circuit. Remember that both attack and decay revolve around the time it takes to charge up, and discharge, that electro cap to ground. And any resistance placed in series with the output of the rectifier gain stage reduces the current feed to that cap. in a manner akin to having less envelope signal."
𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑
CHUCKDBONES:
https://forum.pedalpcb.com/threads/waddle-box-issue.2000/
"
According to the schematic, the SENSITIVITY pot is wired backwards. Turning it CW reduces sensitivity. At 9:00, you have the sensitivity nearly maxed out. An A-taper pot might help. Won't change the SENSITIVITY range, but will make it easier to dial-in at the CCW end. I wonder why C2 is only 1nF. Cuts off the freq response of the envelope detector below 1KHz. Every sch I've found on the 'net has it as 1nF. I'd see if making C3 bigger helps. Try tack-soldering a 10nF in parallel with C2."
DPM309: The discussion on Guitar FX also recommends upping the value of C2 to 10nF. Also, R5 should be reduced to 3.9K or 3.6K.
𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑𝄐𝄑
Hmmm
I've got more info, in the form of a table, but the forum says I can't post that much.
