Search found 74 matches

by Harold
02 Aug 2017, 09:28
Forum: Boutique Stompboxes dissected...
Topic: Darkglass - Microtubes B3K / B7K [traced]
Replies: 86
Views: 48226

Re: Darkglass B3K [traced]

Here's another schematic based on the GUMA: http://peperspedals.blogspot.nl/2017/02/a-brief-guide-into-tracing-out-pcb-to.html and the update on that: http://peperspedals.blogspot.nl/2017/03/b3k-clone-update.html I also made a Vero out of it, but I still haven't checked it: http://diyl.sait.nl/guma-...
by Harold
10 May 2016, 14:21
Forum: Amplifiers
Topic: Orange OR80 Style Build
Replies: 27
Views: 19244

Re: Orange OR80 Style Build

Hi Dr Tony Balls,beautiful amp!! :applause: I have a question,what amps is that 2mH inductor ? I'd like to make this amp but with 6V6s. Thanks for posting this. Aharon That's a .8A inductor, but it doesnt need to be near that high. How much current will flow through that inductor? Less than 200mA? ...
by Harold
16 Mar 2014, 17:57
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Don't thank me, thank MXR! ;)
by Harold
13 Dec 2013, 18:44
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Ross - Chorus
Replies: 21
Views: 13936

Re: Ross - Chorus

Anybody got the schematics?
by Harold
04 Sep 2013, 14:50
Forum: Diodes (Rectifiers, LEDs, Zenners, Schottkies) & Optocouplers
Topic: DOD 230 Photocell?
Replies: 3
Views: 11870

Re: DOD 230 Photocell?

The LED of the Optocoupler is depicted as ... LED! The variable resistor part (LDR) is nicely drawn as green wires ;) The Optocoupler has text on it which side is the LED and which pin is the +. In this case, the Optocoupler should face the vero with the LED-part down, and the + on the second row. ....
by Harold
17 Apr 2013, 22:19
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

I replaced the clear blue 3mm with a diffused red one and the clear blue 5mm with a clear green one.

Sunglasses can be removed now! 8)
by Harold
17 Apr 2013, 19:11
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Crap: almost forgot ... the 2 blinding blue LEDs. :shock: Now where can I find which resistor I have to raise ... The 330R can't be it and I'm pretty sure the two 5M6's arent either. That leaves me with a 470k (R3), a couple of 100k's (R7, R14, R18) and a 47k (R17). All of these seem rather high for...
by Harold
16 Apr 2013, 17:48
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Ok, it looks like all the other components are used for the double bypass switching. Is anybody interested in that part of the fuzz? I mean, I'd love to make a complete schematic for it, but it just will take me a lot of time and I guess nobody really wants to clone that part of the circuit anyway. ...
by Harold
05 Apr 2013, 12:33
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

This makes sense for a simple generic bjt buffer. I generally make buffer like that with a Fet, even simpler, a 1M from gate to ground, drain to V+, Source to a 10K to ground, output capaictor bigger enough, 4 components. I'm interested in the R13 value: I used a 10K in a buffered FF I built some a...
by Harold
04 Apr 2013, 23:22
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Since I can't edit my posts, here's the schematic again ... this time with the correct component numbering ;)
by Harold
04 Apr 2013, 23:15
Forum: Announcements and Forum Rules
Topic: Where's the EDIT button?
Replies: 12
Views: 20462

Re: Where's the EDIT button?

rocklander wrote:it's not a specific 'part' .. as said.. it's for a short period of time.. enough to catch typos, perhaps not enough to think better of the things said and wish to retract :lol:
Just tested it: I can't edit this post, even if it's only seconds old ... :hmmm:
by Harold
04 Apr 2013, 23:13
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

How's this for a buffer?

Please mind: this is my second real trace job, the dual layer PCB isn't easy to trace, and I had a couple of these already ...

Image

:blackeye
by Harold
04 Apr 2013, 21:57
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Cannot edit my post: missed R2. :oops:
by Harold
04 Apr 2013, 21:53
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Does the attached schematic make more sense? :scratch:
by Harold
04 Apr 2013, 20:49
Forum: Announcements and Forum Rules
Topic: Where's the EDIT button?
Replies: 12
Views: 20462

Re: Where's the EDIT button?

Perhaps, but then people could still go back and "edit" their contributions by deleting the contents of their posts. True, that's why there's probably an option to disable editing after "X" hours. Not being able to edit anything after you submit your post is just weird. Edit: di...
by Harold
04 Apr 2013, 15:18
Forum: Announcements and Forum Rules
Topic: Where's the EDIT button?
Replies: 12
Views: 20462

Re: Where's the EDIT button?

You can delete attachments using the control panel long after they've been posted. Got to 'User Control Panel' > 'Manage attachments'. I did this to remove an incorrect schematic. Damn I didn't even know this - thanks so much your feedback. Over the course of the last 3,5y the site was online, we h...
by Harold
04 Apr 2013, 11:27
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Mee = me.

"You cannot edit your posts in this forum" - why?!? :scratch:
by Harold
04 Apr 2013, 07:45
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

Cool Harold! I would have finished the trace but I only had the pedal for 1 night. Looking forward to seeing what the buffer looks like. :thumbsup Mee too ;) I will first answer some questions like the 47k (R4) and the 47pF (C5) connections before trying to trace the buffer and switching parts. The...
by Harold
03 Apr 2013, 21:18
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR Classic 108 Fuzz [schematic]
Replies: 51
Views: 56092

Re: MXR Classic 108 Fuzz [schematic]

I received my MXR Classic 108 fuzz today ...

Let the tracing commence! :horsey: