eastwest and other huge virtual instruments, laptop technology and one big problem!

[Robert "Robby" Piotrowski]

i use notebook "sony vaio" plus some virtuals. i love especially: steinberg hypersonic 2/ huge sounds-about 2000, not too much ram used, very good for makin' aprox. all kinds of music!/. i use pianissimo - it's a virtual grand piano - few pianos, not so huge as NI corporation but... sounds very nice and good! i use some other virtuals, some even free and very nice.. i love edirol orchestral - cool really! very good sounds! but..one problem: i use maya 44usb soundcard. sounds very cool in headphones, but problems are if i connect notbook for amplifier. i have a lot of noise, i haven't it trough a normal pc or if i de-connect power and use only battery in my notebook. i have heard that's a lot of mobile-computers have that problem. please to help me! to buy a di-box/ make special power suppler or..?

[Robert "Robby" Piotrowski]

adding yet, i't very non-comfortable if i play live or so...

[Kieron 'Kit' Furber]

If I'm, reading this right, the problem is that when you have your notebook running from the mains you get noise through the line out?

In theory, that shouldn't happen, but in practice most laptops trickle charge the battery when they're connected to the mains. It's a pain in the arse - it reduces the lifetime of the battery and can cause some power fluctuations as the load on the battery changes. The USB card will be drawing power from the 5V bus, so it stands to reason that it could be affected. For digital devices I doubt it'd be a problem (does the card have a digital output?), but the analogue might be affected some.

Try removing the battery from the notebook before you connect the power - no battery means the charging circuit won't function, and if that's what's causing the noise it might be enough to stop it.

If that doesn't work then it might be a case of putting together a small pc (there's some very small micro-atx machines out there if you hunt around) for the live shows instead of using the notebook.

[Michal Cielecki]

Sorry forumers If you won't understand, I'll wirte it in Polish, it will be easier for me.

W zespole w którym gram używałem jakiś czas temu laptopa. Po podłączeniu do kolumny był straszny noise, znalazłem na forum gdzieś w necie, że może to być od prądu. Była tam sugestia, aby podłączać zasilacz do gniazdka BEZ BOLCA. Mój ojciec miał gdzieś taki przedłużacz/rozgałęźnik z usuniętym bolcem (płaska wtyczka, nie taka gruba jak jest normalnie w przedłużaczach z dziurką na bolec :) ) i wyłamaną dziurką na wypadek gdyby w gniazdku był bolec. Pomogło! Spróbuj w ten sposób i daj znać czy działa.


Cheers,
Michal

[Robert "Robby" Piotrowski]

Hej, Michale!
Bardzo Ci dziekuje za odpis na moj problem! jeszcze nie sprawdzalem czy dziala, bo ostatnio nie ma mnie prawie wcale (koncerty), a lapka uzywam tylko do spraw organizacyjnych /gram na Oberheim MC-1000 88- klawiatura sterujaca, plus moduly brzmieniowe/! jak tylko wroce do domu z trasy to zaraz sprawdze. z tego, co widze na roznych forum itp w internecie - powinno byc tak, jak mowisz! inni, glownie nie-Polacy - radza mi/przeczytaj/ na przyklad kupno malego, stacjonarnego PC-ta, na nowym ATX-ie! haha! ich na to stac! jak nie taki komp to inny, co im tam - oni nie wiedza co to odkladac latami na laptopa! pozdrawiam serdecznie!

[Robert "Robby" Piotrowski]

many thanx for an answer! I think, the problem is if we talk about 3th finger of a supply cabel - that;s the reason! if we off the 'zero' finger - problem we'll be probably finished! no more gears, no more buying..
thanx!

[Robert "Robby" Piotrowski]

Hej!
wlasnie sprawdzalem ten sposob: DZIALA!
bardzo CI dziekuje!