| Author
|
DAMN NOIZE!!! HEEELP!
|
Aiyro
IsraTrance Junior Member
Started Topics :
26
Posts :
69
Posted : Jan 3, 2006 20:48
|
Hey there,
I am goin through some major probs with my new setup at home. I recently purchased some P11A Adam monitors, which definately kick ass. But with the plus of the good sound, came the minus... Distortion/Noise. Its always like that huh... ying and yang.
Firstly, heres the equipment involved with the problem:
PC.
Laptop.
M-Audio firewire 410.
Adam P11A
Secondly, the (STRANGE) problem:
I have a constant noise comming out of the speakers...
As my mate has the same speakers and a similar setup i know the noise shouldnt be there... this "Noise" is quite loud and is like a buzzing sound sort of like the sound comming from power lines :S !!!
The speakers are connected to the line outs of the soundcard.
The soundcard is connected to the PC/Laptop through firewire cables (duh)
When the soundcard is connected to the PC there IS a NOISE.
When the soundcard is connected to the laptop. NOISE.
When the soundcard is connected to the laptop (running on battery; not connected to the mains) THERE IS NO NOISE!!!
Heres the real Mystery.
When the soundcard is connected to the laptop (running on battery power), and i turn on the PC, (AS SOON AS THE PC SWITCHES ON.) NOISE.
The two computers are not connected in anyway, apart from the fact that they are using the same power socket inthe wall...
WHAT THE HELL IS THE MATTER
Ive just sent the firewire to be tested, when i figured something else out.
I tried connecting a nord modular micro directly to the speakers. NO NOISE.
When i then switched the PC on again. NOISE.
Does anyone have any ideas what the problem could be, or any pointers to what i could test?
Anyone with any similar problems... Maybe I could help in return... who knows 
CHEERS
|
|
|
orange
Fat Data
Started Topics :
154
Posts :
3918
Posted : Jan 3, 2006 21:32
|
use balanced cables or put some duck tape on the laptops power plug so the ground metal things dont touch the ground on the wall pwr plug this eliminates the noise you have
and this noise is usualy caused by laptops that have normal desktop cpu like pentium 4
orange
 http://www.landmark-recordings.com/
http://soundcloud.com/kymamusic |
|
|
|
Elad
Tsabeat/Sattel Battle
Started Topics :
158
Posts :
5306
Posted : Jan 3, 2006 22:07
|
|
Lord Deo
Started Topics :
7
Posts :
215
Posted : Jan 3, 2006 22:51
|
Yep, you got huge Ground Loop issues in your settup.
Solutions:
1) make sure power socket has ground jack, and is actually grounded (in your case it seems like it is not)
2) if you use power splitter, make sure that is has ground lead and everything connected to it, is grounded too
3) or use different power sockets for each gear or use the one that has proper grounding. (sometimes some sockets have ground jack wich is not grounded properly or at all and they tend to generate ground loop - loud buzzing sound)
4) get power conditioner (around $50-$100) that will solve most of your humming and hissing problems.
i have had major buzz and hum coming out of my system, just because i had about 12 pieces of gear connected to the same power outlet. After hooking everything up to 2 furman powerconditioners, sound is crisp and clean, noize gone www.venomous2.com
www.myspace.com/venomous2
www.myspace.com/asymmetricnoisesyndrome |
|
|
|
Freeflow
IsraTrance Full Member
Started Topics :
60
Posts :
3709
Posted : Jan 4, 2006 00:05
|
|
Aiyro
IsraTrance Junior Member
Started Topics :
26
Posts :
69
Posted : Jan 4, 2006 02:00
|
WOW!!!
U GUYS ALL ROCK...
I have been trying to solve the problem, theoretically, and here u come with the practical solutions... Really great advice...
A power conditioner, way beyond my thoughts but great advice... Have So many electrical appliances hooked up at the same spot. This has got to help...
Once again.. thx for the great advice...
Nuff respect to all of you. I guess the next question from me is what power conditioner to get? : )
|
|
|
|
Lord Deo
Started Topics :
7
Posts :
215
Posted : Jan 4, 2006 03:48
|
|
Digital Psyence
IsraTrance Junior Member
Started Topics :
13
Posts :
134
Posted : Jan 4, 2006 15:47
|
|
UnderTow
Started Topics :
9
Posts :
1448
Posted : Jan 4, 2006 16:35
|
You could have a look at the APC UPSes. The "bigger" models do power conditioning too.
UnderTow |
|
|
|
dtd
IsraTrance Junior Member
Started Topics :
17
Posts :
490
Posted : Jan 4, 2006 21:00
|
there are two kinds of filters you can use on your power line: the ones which actually filter disturbances on the power line (relatively low frequency) and filters which filter out noise on the cable shield (which is high frequency).
greetings |
|
|
|
lalala
Started Topics :
6
Posts :
89
Posted : Jan 5, 2006 01:08
|
I had a similar problem.
Turned out it was because my laptop was earthed. If your laptop is earthed to the same mains as your amp/speakers it can create noise. When my laptop was on battery there was no noise - connect to mains - noise. Disconnect the earth cable in the laptop plug.
If you unconnect the earth from the laptop cable into the plug (taping it carefully) the noise goes away.
Other things that cause noise are power/audio cables running along side each other, they should always cross each other at 90 degrees if possible.
Dont know if this helps good luck. |
|
|
|
Aiyro
IsraTrance Junior Member
Started Topics :
26
Posts :
69
Posted : Jan 5, 2006 02:01
|
Thx again for ALL the feedback... it is as appreciated as GOLD... still havent fixed the problem yet but am taking in all the advice...
lalala: This is exactly the same problem as i have.
dtd: you said there are 2 types of filter... what are the filters that can do this... A power conditioner? 
Yet again THX CHAMP(S)
|
|
|
|
lalala
Started Topics :
6
Posts :
89
Posted : Jan 5, 2006 11:41
|
Quote:
|
lalala: This is exactly the same problem as i have.
|
|
If it is the same problem then unpconnect the earth wire from your laptop plug and your problem goes away - without buying anything. |
|
|
|
