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Board added for "Routing & Patching" in Lets Get Technical

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 on: Today at 03:11 PM 
Started by hansgraudal - Last post by hansgraudal
Right on the money. The brand new 500MHz Keysight scopes at work measure 50Hz over two ripple cycles, while my old 60MHz HP scope at home gets it right at 100Hz over one cycle ;) Attached is a dump of the ripple over the -15V cap, as the 100Hz ripple is most prominent there.

I brougt the unit home today, to play it for a bit. It's getting better, but there are still some issues to be solved.

When i got it, there was quite a bit of PSU hum bleeding through to the audio path. This is now completely cured.

With OD1 gains above 2-ish the unit starts oscillating, when a guitar is plugged in the front. When the guitar is played it's like the oscillation stops, and then returns when the guitar signal drops below a certain threshold. With no jack in the front input there is no oscillation.
I'll take a look at the alignment procedure next, and then the discrete input stage.

At high gain settings there is audible bleedthrough from the digital control circuitry to the audio path. This gets worse whenever buttons are pressed on the front panel. I'm thinking fresh decoupling caps throughout the board will help here.
Let's see what happens... :)

 on: Today at 11:56 AM 
Started by Kim - Last post by MarshallJMP
Pfew, I thought I was alone in this  :facepalm: ;D

 on: Today at 10:18 AM 
Started by Soloist - Last post by rabidgerry
Well I'm hoping the thing has the amount of distortion I need, and stay's and feels good when it's pushed to extremes.  I don't foresee me using all the gain on this pedal (if the amounts it is supposed to have are to be believed), so in that case if the pedal can keep the integrity together then we will be winning!  I forsee bumping mids up as usual, keeping low end just enough to have weight and having enough high to allow clear detail and definition without things getting harsh.  I'll sound nothing like the guy in the vids but with the controls and capabilities it has should hopefully be able to dial in my sound.

Och I aint a fan of Blackstar, but I'm not petty enough to hide the name.  In fact the seem so popular it will probably get me some kudos with some a-hole who loves the brand  :lol:  At the end of the day if it works for me it will be the most important thing.  This would reduce my flight rig considerably, I would only have a floor FX unit with this pedal in the loop as my pre and then a power amp to travel with plus my axe!  All about the rig development these days!

 on: Today at 09:59 AM 
Started by Systematic Chaos - Last post by rabidgerry
Well my Rockmaster has a direct XLR output that is specifically for being sent to the desk, so this can go to channel 1 and then left+right 1/4" jack outs from FX can go into channels 2/3.

 on: Time Format 
Started by Kim - Last post by rnolan
Your not alone MJMP, the best thing about going rack for me way back when was to just have a midi pedal at my feet and put all the pedals and wall warts out to pasture.  But hey each to their own.

 on: Time Format 
Started by Systematic Chaos - Last post by rnolan
Hey RG, looks like you could at least use it to bring 2 stereo outputs together

 on: Time Format 
Started by hansgraudal - Last post by hansgraudal
My guess about the 50Hz reading is that the ripple probably isn't symmetrical for the top and bottom half of the rectified signal, and as such the scope sees a periodic signal at 50Hz even though it has a 100Hz sawtooth-ish signal "riding on top". I'll make some measurements tomorrow to verify if this is the case.

 on: Time Format 
Started by Kim - Last post by MarshallJMP
Well it seems I'm one of the few that DOESN'T use pedals  ;D well except for my midi pedal.

 on: Time Format 
Started by hansgraudal - Last post by MarshallJMP
Usually those regulators work, or they don't, never saw ones that "kinda" worked. Now it's always a good idea to change those M type regulators because they fail sometimes.
About the common noise, why did your scope display 50Hz?

Also be carefull with putting 220µF caps on the output of those regulators, read the datasheet about using large caps.

 on: Time Format 
Started by Kim - Last post by Kim
So far, this is the latest iteration of my pedal board...I think...wait ten minutes, it's gonna change....wait....

Pretty much sums up every pedalboard.   :lol:

So here's mine for the Update....again.

Pared it down a bit.  Found that the Saturnworks Buffered Splitter was actually redundant on this board because the EHX "9" pedals could do that themselves, so that went to the Home stash.  Also decided (for now anyway, right?) that the EHX Soul Food wasn't really needed where I had it previously, so it too went to the Home collection.  Wait...what?  There's empty space on the board?  lol Thinking about adding a stomp tuner if I find one I like. 

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