#816

I’ve read that Mr. Grassi can be powered from a 9v battery, but the manual doesn’t elaborate. Would I just wire a battery connector to the +/-12v pins on the module?

#817

two more demos from my box! getting weirder and weirder with eurorack CV.
in this one i send in an LFO from maths, which is modulating dogvoice, then the ultrasound filters. these modules don’t really react to outside CV in the way that i expected, but they certainly do react to it. the format jumblers are daisy-chained to the audio ground wire, and any time you plug in any external voltage pretty much everything about the box works differently - the knobs respond differently, the rollz all interact differently, sending the same signal to the same jack yields different results. just as i started to figure out all the interplay between the modules without external CV, i discover a whole slew of RUN modes.

here a rollz signal is sent out to 3 sisters FM (off-screen) with very kooky results

7 Likes
#818

Yup.

I power mine off AA batteries, using 6 of them, so it lasts longer, but it’s still 9V just the same.

1 Like
#819

tasty. does 9v instead of 12v affect the signals it chucks out?

#820

Hainbach’s new record makes me want a Deerhorn.

2 Likes
#821

Finished up my rollzer-lite. 3 tempos (rows) with a 3, 4, 5 and 6 roll for each.

_20190909_215721
_20190909_215721.JPG5204×3904 3.17 MB

27 Likes
#822

wild! did you lay out the PCB yourself?

2 Likes
#823

Do you know if it’s possible/safe to just replace that with a guitar pedal adapter?

#824

9 seconds in on demo 4 your making a almost exact sound from the video game Galaga.

2 Likes
#825

Thanks! I did the layout on perfboard/breadboard.

3 Likes
#826

I imagine so, as Mr. Grassi doesn’t seem to mind lower voltage. I do know my oldschool Fourses/Fyrall sound nicer when I used an adaptor, but I do tend to get ground hum when I touch stuff, so that may also be the case here.

For my Rollz-5, what I did was copy/make one of Peter’s power suppy designs (from the design papers of the Fourses) and run the power through it going to the rest of the circuit. I didn’t really do any before/after testing, but I thought it would be good to do.

1 Like
#827

yeah, I’d be hesitant to have touch capacitive stuff hooked up to the mains. Much safer to go with a battery.

#828

Amazing, this the exactly what I’ve wanted for ages. I’m using my rollz but would love something more compact.

2 Likes
#829

Ok, so I received a Quatrax yesterday evening. A couple first impressions/notes:

-Maybe obvious, but it’s pretty damn long. I found it a bit hard to play the entirety cohesively while it was all patched up, but not too bad. One (or I guess two?) could probably duet on it, though.

-I scoped the timbre knob and it’s saw (ccw) to triangle (middle) to reverse saw (cw). The timbre knob also changes frequency, with the saw being in the middle , triangle highest, and reverse saw lowest. Interestingly, the individual tuning sliders change frequency AND timbre as well, so multi-timbrality! I’d guess this is what makes it more than a double Sidrax?

-The third green jack is another glitch jack- I confirmed that with Peter. I’m not super familiar with the Sidrax/Tetrax to say how this new one is different, but they all sound cool. I don’t think there’s CV control over timbre as far as I can tell.

All in all, super fun so far!

2 Likes
#830

That timbre knob and barre sliders behaviour makes it sound more like a massive tetrax than a sidrax to me. Which is very exciting!

2 Likes
#831

For all you Peterheads. Released today is the work of SqrtSigil (Poland). Esoteric recordings of various Ciat Lonbarde designs.

https://purlieurecordings.bandcamp.com/album/materia

5 Likes
#832

kind of a x-post but: the snare on my pb2 suddenly became very quiet, near inaudible, while in use. mixer level is fully cw. not sure why, doesn’t matter what I have patched into the green jack. seems to get quieter throughout use. should I bother Blasser with this? any advice on what might be causing the drastic signal drop would be very much appreciated. I’m using 9V battery for power.

#833

I’m pretty sure the issue is the battery- they seem to be more a fun alternative than a direct replacement for a PSU. It’s been a while since I used a 9V in a PB, but I think the snare was the most drastically effected.

1 Like
#834

Yeah I remember the snare being unusable on battery power.

1 Like
#835

I have the opposite issue. My ‘snare’ is waaay louder than the rest of the modules. At approx 10 o’clock it’s like a maxed out gong (which is low, espacially in the low pitches).