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Messages - LJangel

#16
General Questions / Re: Florist hiss
September 14, 2022, 02:09:30 PM
I was wrong.  I do have a small amount of hiss when blend is fully CCW.  I just didn't have the volume high enough to hear it.
#17
General Questions / Re: Florist hiss
September 14, 2022, 12:36:41 PM
I did swap the PT2399 (everything is socketed) and that didn't help but I have one more to try.  I'm going to try one of the J201s I have temporarily just for the heck of it in Q2 while waiting for more 2n5457s.  I don't have an audio probe (just a dmm and o-scope).  Then I think I'll double check all the values again for sanity before swapping c9 and c12.  thanks for the help 
#18
General Questions / Re: Florist hiss
September 14, 2022, 11:10:00 AM
I reflowed everything and changed all the chips.  Values are definitely correct for everything.  I suspect the 2n5457 may be fake or really out of spec.  Ordered new genuine ones from GuitarPCB that are hand tested.  I only get hiss when blend is above 2:00 and volume is also above 2:00 (very little at this point and louder as these controls are increased).  It isn't affected by any other controls.  The volume and blend both share the part of the circuit with the TL072 (which I swapped and no change) and the 2n5457.  I'm thinking this might also be the reason why I don't reach unity volume until about 4:00 on the pot. (low gain/out of spec 2n5457?)  thanks
#19
General Questions / Florist hiss
September 13, 2022, 06:38:34 PM
I just built the florist.  Everything works correctly, but I have hiss at volumes above the half way point.  Louder volume, louder hiss.  Also, unity volume doesn't happen until around 4 o'clock on the pot.  I can deal with the volume, but the hiss is too much.  Maybe the PT2399 or 2n5457?  Going to try swapping them out and reflowing all the solder joints.  Anybody have any ideas before I dive into it?  thanks
#20
Build Reports / Re: 808 again
August 06, 2017, 07:47:01 PM
thanks!
#21
Build Reports / Re: Multiplex Tape Delay
August 06, 2017, 07:46:15 PM
thanks everyone!
#22
Build Reports / Multiplex Tape Delay
July 23, 2017, 07:29:29 PM
I wanted to make this one for awhile now.  Finally got around to ordering the parts I didn't have and putting it together.  I already replaced one of the delays on my board with this one.  It's a keeper- sounds great and the tape speed up is a cool feature.



#23
Build Reports / 808 again
July 23, 2017, 07:25:27 PM
I had some spare parts and vero, so I built another TS-808 with clipping options and fat mod.  The graphics are similar to another one I made previously and is still on my main board.  This one will probably go to a friend.

#24
Very nice.  I really dig the top plate on the Aquaboy!
#25
Build Reports / Klon
June 13, 2017, 09:46:00 PM
This one is a standard Klon made from the old Madbean Sunking v3.  This board's an oldie but a goodie. 



#26
very cool.  I've got to give etching a try
#27
Build Reports / Re: Queen of Bone
June 04, 2017, 11:02:50 AM
thanks everyone.  BrianS- sounds great.  the two channels stack really well too
#28
Build Reports / Re: MadBean Cave Dweller
June 03, 2017, 11:57:32 PM
The good ole Cave Dweller!  Nice looking.  I dig the purple.  Looks like an old muscle car.  I've got to do another one soon for my "little board".
#29
Build Reports / Re: Twin Peaks lives in many ways
June 03, 2017, 11:54:29 PM
those graphics are killer!  very cool
#30
Build Reports / Re: Twin Peaks
June 03, 2017, 11:51:34 PM
wow, that's one nice pedal!  Love the contrasting but complementary color scheme.