Fudd
Mar 11 2003, 01:06 AM
ok one of the requirments for CAASQ is the zero bit track where your system is tested for any noise,
well when i have the track playing and have it at full volume there is a hiss, how do i get rid of it??
i thought about turning the gains down a bit, but the tweeter's are right down and if i turn the rest down it will be all over the place?
[ March 10, 2003, 23:09: Message edited by: fuddbutter ]
Fudd
Mar 11 2003, 01:08 AM
hmm now i think about it there is a volume adjustment thingy on the HU, ill try turning that all the way down so when the volume is all the way up it is really at about 1/2
if anyone knows what i mean?
shiny_car
Mar 11 2003, 01:46 AM
how audible is this hiss? i mean, can you hear it from the seat or do you have to put your ear right up to the speakers?
if it's inaudible from the normal listening position of your ears, then it won't matter in comps.
Fudd
Mar 11 2003, 01:55 AM
it was at 80kph!!!
from where i was driving, not overly loud, just kind of like radio hiss
shiny_car
Mar 11 2003, 05:29 AM
QUOTE
Originally posted by fuddbutter:
it was at 80kph!!!
from where i was driving, not overly loud, just kind of like radio hiss
was it the radio?
so is it always there or was it the recording/CD? do you hear it with the engine off or idling?
T-Bro
Mar 11 2003, 05:22 PM
quite often, the hiss is in your actual CD's (recordings) especially if you like electronica, rap, dance and all that other fake/synthetic music made by computers. most recorders dont put alot of effort into mastering CD's, as most people play the stuff on $99 ghetto blasters, and the resolution isnt there to notice it.
for example, have you ever noticed that FM radio usually sounds better on a factory system, than an aftermarket one? its often because the factory system has poor fidelity and resolution, and is unable to reproduce all the hiss and other flaws in FM - whereas a high end SQ system will make it obvious to anyone.
experiment with different CD's to ensure that the recordings arent your problem.
that said, pretty much ANY audio equipment will hiss when you turn it all the way up to maximum, thats why its generally good to run your components at below their capacity. most low and mid-end headunits will hiss and distort after about 75% of their volume control travel, in my experience. the really high-end headunits will go flat out and do so cleanly.
anyway, you shouldnt really be running your headunit at full volume anyway, about 90-95% would be as far as i would push any source unit.
ps - were assuming your amp gains are all the way down, as amp gains that are turned up are one of the most common sources of hiss and noise.
good luck
Provo
Mar 12 2003, 02:48 AM
Hey Fudd....if you haven't already check my post out...
Hisssss I'll be doing some more investigation....if I find anything i'll let you know!
Cheers,
Joe
Fudd
Mar 13 2003, 10:37 PM
i was using alpines first encounter disc, the zero bit track (blankness!)
i was doing one of the catagories from CAASQ score sheet!
i managed to get rid of it using the volume adjustment on one of the menues on the HU (jvc 909)
u can turn down the volume so when u use the normal volume cotrol u cant turn it up to loud (if that makes any sence)
Fudd
Mar 14 2003, 11:33 PM
ok i have tryed what i said b4 and adjusted the level, seems to have helped, but i have also noticed a bit of noise through the tweeters, it happens as soon as u turn the dial to 1 onwards??
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