Arturia Forums
Hardware Instruments => MatrixBrute => MatrixBrute - General discussions => Topic started by: minus_ego on November 29, 2018, 06:53:36 pm
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Hey Arturia,
It would be great if you guys could offer a guy some advice on acquiring some custom knobs for the Brutes. Some smaller ones that resemble the rotary encoder knobs on the master cutoff and matrix modulation amount perhaps? Thanks.
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The pots have 6mm D shafts so any knob with those specs will fit. The flat of the D is in line with the indicator on the knobs, as opposed to the more common variety where the flat is perpendicular to the indicator and usually on the opposite side - I have a hard time finding knobs with this configuration. Pull off a knob to see it:
Arturia D shaft and pointer relationship:
indicator => |
shaft => D
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Same here Dr. J. I found these but they look terrible in my opinion. I really like the ones with the chrome caps but as you said I can't find any with the proper configuration.
https://www.modologic.com/product/microbrute_knob_set (ftp://www.modologic.com/product/microbrute_knob_set)
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The pots have 6mm D shafts so any knob with those specs will fit. The flat of the D is in line with the indicator on the knobs, as opposed to the more common variety where the flat is perpendicular to the indicator and usually on the opposite side - I have a hard time finding knobs with this configuration. Pull off a knob to see it:
Arturia D shaft and pointer relationship:
indicator => |
knob => D
Quite right. The orientation of the "D" is unusual. I've thought about changing the knobs (mostly to use a variety of colors, to tell the knobs apart quicker), I think if I did it I would try to find a D shaped insert, to fill in the empty space on the shaft, and then just use regular 1/4" knobs with the set screw.
Small bear electronics, a guitar pedal parts store, has an outstanding collection of knobs. The guy sells so many he is able to get the factory to make custom knobs and do custom colors.
http://www.smallbear-electronics.mybigcommerce.com/knobs-1/ (http://www.smallbear-electronics.mybigcommerce.com/knobs-1/)
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Quite right. The orientation of the "D" is unusual. I've thought about changing the knobs (mostly to use a variety of colors, to tell the knobs apart quicker), I think if I did it I would try to find a D shaped insert, to fill in the empty space on the shaft, and then just use regular 1/4" knobs with the set screw.
Small bear electronics, a guitar pedal parts store, has an outstanding collection of knobs. The guy sells so many he is able to get the factory to make custom knobs and do custom colors.
http://www.smallbear-electronics.mybigcommerce.com/knobs-1/ (http://www.smallbear-electronics.mybigcommerce.com/knobs-1/)
Nice find! :o Thanks.
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At first, I was sort of wondering: why change the knobs?. But then I just went to feel my MB's pots, and now I realize that the ridges on the sides of the knobs are kind of tough on the fingers! Funny that I did not pay attention to this before, even after spending hours tweaking patches!. And yes, different colors would definitely help visually. So well worth looking into this.
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Check out Frys.com for knobs, they have many.
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At first, I was sort of wondering: why change the knobs?. But then I just went to feel my MB's pots, and now I realize that the ridges on the sides of the knobs are kind of tough on the fingers! Funny that I did not pay attention to this before, even after spending hours tweaking patches!. And yes, different colors would definitely help visually. So well worth looking into this.
I kind of like the feel of them actually, for me, it's more the colors that I feel would really set the front panel off very nicely. This isn't a knock on the designers. I like the industrial gray look but a few different color accents would be nice.
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Check out Frys.com for knobs, they have many.
Thanks for the suggestion!
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Mouser Electronics is always a good source for electronics and parts https://www.mouser.com/Electromechanical/Knobs-Dials/_/N-5g22/
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The world is full of knobs - the problem is the "6mm 90 degrees D-shaft" configuration. None of the suggested shops, apart from modologic in posting #3, carry any - they're as rare as hens teeth...
Other than that you can get such knobs for electric stoves - not quite the style we want :-)) More suitable ones, but still in the modologic style, can be found in some places like e.g. this (https://www.aliexpress.com/item/6pcs-90-degree-indication-rotary-potentiometer-plastic-knob-cap-Volume-Mixer-disc-player-equalizer-half-shaft/32951314730.html?spm=2114.search0604.3.42.16bf3327pHprvt&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10068_319_317_10548_10696_10192_10084_453_454_10083_10618_10307_10820_10821_10301_10303_537_536_10059_10884_10887_100031_321_322_10103,searchweb201603_51,ppcSwitch_0) and this (https://www.aliexpress.com/item/14pcs-for-Pioneer-DJ-MIXER-DJM-Mixer-Mixing-station-knob-cap-DIY-color-rubber-potentiometer-knob/32841461342.html?spm=2114.10010108.1000023.71.2a1477e4OHlz8u). Elma has some, and a few others can be found. Beware that the sweep of the rounded part of the D-shaft can also vary. I'm sure there are more but it's not easy find them, even for people experienced in parts sourcing... I've never seen any in the chrome-top style (classic synth knob) that minus_ego mentioned though.
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Oh right, 90 degree index marker offset, that is pretty uncommon.
Not sure if you found a knob that meets all of your requirements but here's some colorful ones, albeit plastic not metal/aluminum. Check out the 90 degree Super Knob line. They provide knobs for several Arturia products; Beatstep Pro, DrumBrute, MicroBrute, MiniLab.
https://store.djtechtools.com/products/chroma-caps-knobs-and-faders?gclid=EAIaIQobChMItNGZ9OCU3wIVgchkCh2WoAN5EAkYDCABEgKGAfD_BwE (https://store.djtechtools.com/products/chroma-caps-knobs-and-faders?gclid=EAIaIQobChMItNGZ9OCU3wIVgchkCh2WoAN5EAkYDCABEgKGAfD_BwE)
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Great find!
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Hi
iv just ordered some knobs from them
ill post some pics when they arrive
https://store.djtechtools.com/products/chroma-caps-knobs-and-faders?gclid=EAIaIQobChMItNGZ9OCU3wIVgchkCh2WoAN5EAkYDCABEgKGAfD_BwE
cheers
KEV
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Please let us know how you get on! If they fit and they’re the same quality as on the midi fighter twister I’m very interested.
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Hi
on this forum someone said the knobs are 90
i just looked in the MxB manual and it says the knobs are 270
Pot mode - Because the knobs are 270 pots and not 360 degree encoders
but I ordered 90
can any body confirm what knobs I should order
while I still have time to change my order
im panicking now that I have just spent 100 quid on the wrong knobs
cheers
kev
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Hmm, yeah, I just checked and the pointer sits clockwise next to the straight side, so thats the 270 degree style on your uploaded image. I don't have a lot of experience with knobs, but I can tell you this:
Just pull one of and see for yourself, you are not gonna break anything. And you will have to, anyways, when your (hopefully correct) knobs arrive.
Cheers
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I've read many technical manuals over my years and don't recall any of them documenting knob orientation. I wish the MB's manual was written to such detail. Arturia, you have my vote to continue enhancing the manual with a lot more detail (and am not referring to knob orientation).
I'm assuming the manual is describing that all knobs are not the 'encoder' type, they all don't rotate 360 degrees. Instead, most rotate 270 degrees. Knob rotation is different than knob orientation. Attached is a pic of the bottom side of the Gate knob. You can compare that against what you've ordered. Pleass note that's only one of its many knobs, so you may want to pull each knob and verify its orentation for ordering accuracy. They are a tight fit but do pull straight off.
The 90-degree knob orientation matches what DrJustice shared.
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Hi All
yep that's the ones I ordered, I did what you did and took a knob off
took a pic and sent it to the knob company
he confirmed its 90 PHEEEWW I thought I was going to be 100 quid light
the guy at the company had a live chat on the web site and was very helpful
they are as I type in the hands of FedX and should arrive to me on Mon 11th Feb
so once iv PIMPED up My MxB ill post some pics
Don't slag me of for the colours iv chosen
Cheers
Kev
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Location of my knobs
05:29 am
In transitFedEx
MEMPHIS, TN
not long to wait now
cheers
Kev
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Hi
IV PIMPED MY MxB
Knobs arrived after only 4 days very impressed
Knobs have a nice soft but firm rubber feel to them
unlike the original hard plastic
some of the original knobs were a pain to get of almost broke a nail lol
the new knobs fit nice and tight
the colours are nice and vibrant
now for the bits I don't like
the original knobs white line marker strip goes down the side of the knob then juts out
on to the knob skirt making it easy to see what setting the knob is at
on the new knobs its just a straight white strip there is hardly and skirt at all
so therefore depending what angle your looking at the knobs from it can be hard to see the knob setting
The fader tips will have to go back as they are almost twice the size of the original fader tips
no chance of trying to fit them ( bummer )
I have left the fader tips in the picture for reference
All in all I am happy with the look and feel
apart from the couple of niggles I mentioned earlier
the idea behind my colours for the knobs
is Pink for all oscillators
Red for any knob that increases the volume or input and output
orange for the Steiner filter apart from output Red
green for ladder filter apart from output Red
I know I'm going to get slaughtered for my colour choice LOL
cheers
Kev
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I like it! Too bad about the sliders. Honestly though, nice touch matching the Arturia filter assignment colours to the knobs.