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#1
Tech Help - Projects Page / Re: Harbinger One 2015 not wor...
Last post by NorthCoast - Today at 05:29:19 PMCan you post some pics?
What voltages are you getting on Q1?
What voltages are you getting on Q1?
#2
Open Discussion / Re: Check this BYOC news
Last post by jessenator - Today at 04:50:04 PMQuote from: aion on Today at 02:26:01 PMotherwise your mailing address and email address are on the public directory and they get harvested and abused.preach
#3
Tech Help - Projects Page / Re: Harbinger One 2015 not wor...
Last post by Kardnez - Today at 02:27:05 PMUpdate:
I replaced Q11 and Q12 with 2N3904 transistors, and the LFO is now working. However, there is still no signal coming out of the circuit. The input signal is present at the base of Q1, but no signal is coming out of the collector/emitter. Q1 was also replaced with a 2N3904. The DC voltages in the preamplifier stage look good.
Does anyone have an idea?
Thx
Holger
I replaced Q11 and Q12 with 2N3904 transistors, and the LFO is now working. However, there is still no signal coming out of the circuit. The input signal is present at the base of Q1, but no signal is coming out of the collector/emitter. Q1 was also replaced with a 2N3904. The DC voltages in the preamplifier stage look good.
Does anyone have an idea?
Thx
Holger
#4
Open Discussion / Re: Check this BYOC news
Last post by aion - Today at 02:26:01 PMQuote from: jwin615 on October 25, 2025, 04:44:32 AMQuote from: jessenator on October 25, 2025, 01:48:19 AMIs Iceland so bored they've resorted to a scam economy?Apparently that site is a "buy your doing business as address here" kind of thing. Probably for tax evasion and also secrecy.Grow your bananas, you geothermic hooligans
P.O. box for shell companies.
Not exactly, they just use a privacy service for the domain registration. It's an option from most domain registrars and only costs a few dollars a year on top of the domain registration. It's been the industry standard since 2010 or so because otherwise your mailing address and email address are on the public directory and they get harvested and abused.
#5
Build Reports / Re: MicroSynth Fuzz
Last post by jwin615 - October 26, 2025, 02:28:02 PMAwesome. Thank you!
#6
Build Reports / Re: MicroSynth Fuzz
Last post by LaceSensor - October 26, 2025, 02:19:05 PMMy bad for any errors. Ive updated the first page now.
As for missing caps let me know specifically what I have mis-labelled there. thanks
It does jump from C21 to C28 with nothing in between
C28 is added to C19 in parallel. The original part of that filter schematic is not on the original MS (hence the bypass toggle) and is indeed lifted ffrom Aleph Null via a datasheet for a PT2399 delay. Is a multiple feedback Low pass filter. The freuqency can be adjusted via C19 - if you want you can just put a 680pF or whatever your preference is up to about 1.5nF ish and forget C28. I found the 680pF can be a tad limited with bass, its grand with guitar. Hence you can mess around. The pads for C28 could also be used to switch in other caps ?
This was hopefully mostly captured in my build notes, towards the end of the BOM doc
"C19 and C29 are in parallel, and approximate a 680p cap. I found it useful try one cap depending on the tone you prefer. Lower (total) values of C19 and C29 will give "peakier" and harsher treble sounds. Higher values will darken the filter. Try anything from 220p up to 2n2 in total. You can simply put a 680pf cap in either position and call it a day 😊"
As for missing caps let me know specifically what I have mis-labelled there. thanks
It does jump from C21 to C28 with nothing in between
C28 is added to C19 in parallel. The original part of that filter schematic is not on the original MS (hence the bypass toggle) and is indeed lifted ffrom Aleph Null via a datasheet for a PT2399 delay. Is a multiple feedback Low pass filter. The freuqency can be adjusted via C19 - if you want you can just put a 680pF or whatever your preference is up to about 1.5nF ish and forget C28. I found the 680pF can be a tad limited with bass, its grand with guitar. Hence you can mess around. The pads for C28 could also be used to switch in other caps ?
This was hopefully mostly captured in my build notes, towards the end of the BOM doc
"C19 and C29 are in parallel, and approximate a 680p cap. I found it useful try one cap depending on the tone you prefer. Lower (total) values of C19 and C29 will give "peakier" and harsher treble sounds. Higher values will darken the filter. Try anything from 220p up to 2n2 in total. You can simply put a 680pf cap in either position and call it a day 😊"
#7
Build Reports / Re: MicroSynth Fuzz
Last post by LaceSensor - October 26, 2025, 02:17:49 PMR7 is 27k
As for the wierd values, its what the schematic called for I guess
Cheers
As for the wierd values, its what the schematic called for I guess
Cheers
#8
General Questions / Re: Board layout for original ...
Last post by jimilee - October 26, 2025, 01:18:49 PMNow. I always forget about that.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
#9
General Questions / Re: Board layout for original ...
Last post by jessenator - October 26, 2025, 05:40:48 AM
#10
General Questions / Re: Board layout for original ...
Last post by jimilee - October 26, 2025, 03:36:02 AMQuote from: Mark0614 on October 25, 2025, 11:28:24 PMHiYou may have to email Brian. I don't have it either. 2015 is the earliest I have.
I was going through the box of parts and came across an old Mad Bean PCB for the Smoothie MXR phase 45 clone.
Going through the archives I can only find 2015 layout for the Smoothie, and a more modern layout.
https://madbeanpedals.com/projects/_folders/StandardSeries/pdf/Smoothie.pdf
The layout that I have is the one shown in the link.
https://www.madbeanpedals.com/forum/index.php?topic=3807.0
If you are able to assist me, I would greatly appreciate your help.
Regards
Mark
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