Zemmix Neo project in Korea. (OCM based Zemmix with CNCed case)

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Por syn

Prophet (2113)

Imagen del syn

26-08-2013, 17:23

it was preorder only and a one-time thingy

Por Pablibiris

Paragon (1814)

Imagen del Pablibiris

05-09-2013, 22:29

Yesss! I put a custom vinyl on my Zemmix Neo Lite Smile
I want to remove one of them...but I dont know wich one LOL!

Por KdL

Paragon (1450)

Imagen del KdL

06-09-2013, 12:45

you can remove the logo on the top! Wink

Por Pablibiris

Paragon (1814)

Imagen del Pablibiris

06-09-2013, 13:29

yes,I think so Big smile
Thanks!

Por KdL

Paragon (1450)

Imagen del KdL

06-09-2013, 22:40

the OCM has the same MSX logo on the bottom-right! Wink

Por luppie

Paladin (869)

Imagen del luppie

07-09-2013, 14:26

Finaly found some time to play with my Neo again and look into the high piched noise problem.
I've put a frequency analyser on the sound ouput showing a 2.621Khz noise.

Not sure where it comes from, but it's a realy anoiing beep.

Por luppie

Paladin (869)

Imagen del luppie

07-09-2013, 19:33

I've did some tests with a small filter and I'm able to cut out the high piched noise at a normal sound level.
To achieve this I used this schematic:

R = 1 Ohm
C = 10uF

When I amplifie the sound to realy loud I can still heare the noise, but I never have my volume that loud.

Por boss_msx

Champion (415)

Imagen del boss_msx

07-09-2013, 20:24

Hi Luppie! I have exactly the same high pitch noise and I was wondering if you can help me with that filter...did you fix it internal or external? Really great that you found something that reduces the high pitch noise... Cool

Por luppie

Paladin (869)

Imagen del luppie

08-09-2013, 19:24

I just put it in the Cinch plug, so I dont have to modify the Neo.

Por mygodess

Champion (275)

Imagen del mygodess

09-09-2013, 11:23

@Luppie. Great work.

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