Howzit guys,
Not gonna have a chance to wire this one up for a couple of days so thought I'd post it.
Really proud of this one :D
It's a Big Muff with:
Pre-boost (LPB1)
Baxandall Tone stack (ditched the recovery gainstage on the muff)
Tone Bypass
Diode Switch for 2nd gainstage
Focus: input capacitor blend
Blend control: all credit to Mr JMK for this bit!!!
It's a nifty little op amp circuit and used it before.
Big thanks for sharing it!!!
Made to be VERY Bass friendly.
My Bass player buddy with be stoked with this one.
Also, decided to shake things up and do the knobs at an incline. Because? Why not :)
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/6A097A4C-E86C-452C-83F7-76FF6217E4A1-2772-00000332F4348A49_zps728fe040.jpg)
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/4DB727C3-586E-4F41-9B6B-E5E9ADE33743-2772-000003331AD9E00F_zps31b1e1ba.jpg)
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/8A87EF2E-39EE-42FE-8F98-1E3E78AF049E-651-000001101D4B9A9A_zpsfe8a8097.jpg)
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/MufflabPCB.png)
Here's the original graphic, but my execution didn't turn out well.
So... To the sandpaper!!
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/FinalGraphic.png)
Here's the schematic - no values because still haven't finalized the values.
Especially on bass, need to work things out properly.
ie if a bass version is too muddly on guitar or if a guitar version lacks low end for bass.
I did add power supply filtering, not shown though.
(http://i1171.photobucket.com/albums/r559/mtmattan/Skeedish%20Muff/SkeedishMuffSchematic.png)
Very nice. You really think through every process of your builds ... the pattern on the PCB being just one good example.
That's a well planned pedal for sure! Great execution, I really like the whole theme behind your build. Well done.
Jacob
This build is sweet! One of my favourite of yours, how did you get the pattern on the mica board? Is it some kind of sticky paper, or did you buy it that way? Either way I need that in my life! Makes the etched board look really good.. Shame few people will ever see it!!
George
That's a really cool build. Great job.
The PCB is just sticky paper and printed with a laser printer.
Ended up with a long roll of it somehow so seemed like a good use for it.
Really happy how it turned out!
I always get inspired when I see John Lyons beautiful PCB boards so this is a step in the right direction at least :)
Don't know why they make PCB board material the colour of vomit...
Did you drill through it when you drilled the board? Or drill the board first then stick it on then poke it through? Either way in an see myself ruining it during the process haha
George
I just stuck it on then drilled it.
This paper I used is quite strong, not sure what kind it is but like a thick sticker thingy.
If you drilled it before or after it should be fine.
Poking holes after just seemed like more work :)
Because no one looks at it besides tech nuts like us.
Some Dumble amp builds use some kind of wood for eyelet board material.
Some of the guys on the Metroamp forum hunt down NOS Paxolin material (and NOS turrets if they can get 'em) for their boards.
Since everyone else already talked about how great this looks, I'm going to chime in and say that it took me a few seconds of staring at the first picture to realize that the name of the pedal isn't "Treble Bass T.B. Sex Focus".
I can't be the only one.
Nice work Matt :)
Quote from: lincolnic on December 09, 2012, 04:55:46 AM
Since everyone else already talked about how great this looks, I'm going to chime in and say that it took me a few seconds of staring at the first picture to realize that the name of the pedal isn't "Treble Bass T.B. Sex Focus".
I can't be the only one.
lol. now that you mention it I did have to look twice
Most impressive sir. Dare I ask what happens when you flick the sex toggle?!
Quote from: nzCdog on December 09, 2012, 09:02:13 AM
Nice work Matt :)
Quote from: lincolnic on December 09, 2012, 04:55:46 AM
Since everyone else already talked about how great this looks, I'm going to chime in and say that it took me a few seconds of staring at the first picture to realize that the name of the pedal isn't "Treble Bass T.B. Sex Focus".
I can't be the only one.
I did wonder was 'T.B SEX FOCUS' was!
Oh the Sex is the diode switch. Because? Why not :)
If there's any interest, I would be keen to do a little run of fabbed boards.
A single sided layout is possible but there are some very awkward jumpers not obvious in the pics so double sided would be far better.
And.. makes it easier for board mounted switches and of course any excuse to get some pretty fabbed boards :D
This is subject to Jacob giving permission to use his blend circuit of course!
The value of this particular muff is:
1. Lots of knobs and switches:D
I really like lots of tweakable parameters because not everyone has a different "sweet spot".
2. All board-mounted = no off-board wiring.
Thank the Pope!
3. Bass-friendliness
Blend control for the win!
4. Extensive tone shaping
Baxandall Treble & Bass, Tone Bypass and Input blend.
So ya, just putting feelers out as to if anyone is keen to build one.
Just PM me so I can get an indication of interest.
Will be really happy if I can give something back to the community!
Learned so much from this forum and really genuine people here as well :)
Matt.
Definite interest here! Keep me posted and I'll have one or two off you :)
Damn
Hey guys,
http://youtu.be/0LXkC2g1Abw
Here's a demo of the Skeedish Muff on Bass.
I'll do a demo of it on Guitar when time permits.
Also, it's taken from my iPhone so it's not exactly studio quality and it's from my Mesa Boogie Express amp so it's not a bass amp.
(but you get the jist of it!)
Note: there are essentially 2 versions of the Skeedish Muff.
A guitar-optimised and a bass-optimised one - basically just the Tone Section is affected.
I've used the guitar version in the video because I've still got to work out the EQ values for Bass.
The tone section features a bypass so I was able to use it without a problem on Bass.
For interest, guitar goes from Low E at 80Hz to High E at 320Hz.
For bass, 4 string Low E at 40Hz to G at 100Hz.
For 5 string, the Low B goes down to 30Hz.
The demo goes right down to B.
When looking at Fuzz, there's always a tradeoff between better bass and more "muddiness" or less bass and more "tightness".
So the lower you go, the harder it is to get good fuzz - hence the Treble/Bass/Blend/Bypass/Focus knobs to combat this.
As a benchmark I used a Woolly Mammoth, I love it on guitar but was designed for bass - huge low end.
When used with active bass, the high impedance it causes tthe Mammoth to sound blubbery.
The additional Pre Amp section of the Skeedish Muff helps to counter this.
On the whole, really happy with how this turned out.
Better still, my bassist says it sounds good - and he has a big beard so it must be legit.
I would be really interested to hear any comments from Bass players, especially those that use fuzz.