ringing Kaossilator/Mini KP headphone input?

rust · Post by **rust** » Sun Aug 14, 2011 1:55 am

i've searched and read a couple similar threads, but i was just wondering if you can check your kaossilators for ringing/static/noise. i don't hear it as much when i use my expensive studio headphones, but its there. i tried to use it with my microkorg (audio in) and the ringing was even louder. the sound doesn't start right away, and if you already have your headphones on it helps. i checked my mini kp and its the same way. i'm just trying to figure out if it was like this from the beginning and i wasn't aware, or if this has happened over time. either way, i'm not going to complain. the kaossilator is less than a year old and the mini kp even less than that. anyway, thanks for the help.

rust · Post by **rust** » Sun Aug 28, 2011 5:05 pm

yes? no?

still ringing..

Eat-Static · Post by **Eat-Static** » Sun Aug 28, 2011 7:33 pm

Hi ,

Have both , never experienced static/noise/ringing .
What cables did you use to link Koassilator to microKorg ?

How is the miniKp connected ? What cables are you using with this unit ?

Did you say that with just headphones in the koassilator it makes these unwanted sounds ?

More information please

Cheers

Eat Static

rust · Post by **rust** » Sun Aug 28, 2011 8:29 pm

hello. i use a regular dual rca cable (from radioshack) to connect the kaossilator and minikp. when i use just the minikp its normally a rca to 1/8".

to link the kaossialtor to the microkorg, i plug a dual 1/8" with a 1/4" adapter into the microkorg's audio input. yes, with just headphones or plugged into an amp (dual 1/8" with 1/4" adapter on end) connected it makes this sound.

i'm not sure when it happened but i decided that i definitely would have noticed it before. i've also tried it with batteries and an adapter, just because.

i think thats about all the other information.. i have the pink version if thats even worth mentioning. thanks for the reply.

license · Post by **license** » Tue Nov 22, 2011 4:20 pm

Sorry for replying to an old thread, I'm getting the same problem with my miniKP. I haven't found anything elsewhere about this.

supadupa555 · Post by **supadupa555** » Fri Aug 07, 2015 5:22 pm

I badly need help. I am experiencing high pitched ringing noise (around 15,000 Hz) on headphone output (Kaossilator 1st Generation). The noise clicks when changing patches and on L.00 it's barely audible but it's still there. I have the exact problem as described by the OP. I have worked around the noise by shaving it off using a notch filter in a DAW. Any circuit bender out in here who can help me out? I can open up the box if needed. I don't want to lose this baby. Please help. Sorry to bump this old thread but there is nothing on google related to this...

bradkorg · Post by **bradkorg** » Sat Aug 08, 2015 2:11 am

supadupa555 wrote:I badly need help. I am experiencing high pitched ringing noise (around 15,000 Hz) on headphone output (Kaossilator 1st Generation). The noise clicks when changing patches and on L.00 it's barely audible but it's still there. I have the exact problem as described by the OP. I have worked around the noise by shaving it off using a notch filter in a DAW. Any circuit bender out in here who can help me out? I can open up the box if needed. I don't want to lose this baby. Please help. Sorry to bump this old thread but there is nothing on google related to this...

Don't expect noisefree quality from a "cheap" electronics pocket device, even the expensive desktop version can have noise artifacts.

If using battery and mains power have exact the same problem, then its in the design.
If you can DIY soldering, you can try shielding the processing IC's and input prints using copper tape.
http://www.amazon.com/gp/product/B00KLJ ... B002HFDPVW

Cut the copperfoil wide enough to cover the whole processing (big) IC's and surrounding print.
Tape the foil tightly on the IC and cover over IC and its surrounding legs and make sure not make direct bare contacts with other surrounding components to have short circuits!

Solder few earth-wires from the print earth points to the Copperfoils top and/or corner points. This will shield the processing IC against EMI / high pitch static noises.
Probably the clicks when select option can't be fix as that is In the IC DESIGN glitch.

The idea is to shield the IC inputs/outputs closely against noisy EMI, so taping the copperfoil tightly against the ic/legs/print have the most effectiveness than those metal shield with too much inner space.
https://m.youtube.com/watch?v=QQXIAukijGg

bradkorg · Post by **bradkorg** » Sat Aug 08, 2015 2:27 am

https://m.youtube.com/watch?v=wAktp9pnTWk

https://m.youtube.com/watch?v=4d5QrCCxc_Y

If its too tiny to cover the chips, then use long tape to cover the whole print and enough earth wires to enough corners of the tape to ensure good shielding effect.