clipping or too small of boxes? - Audio & Electronics Forum

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clipping or too small of boxes?
Monday, October 13, 2008 3:13 PM
so besides the problem i have of not being able to find the right fuse, there is this weird sound when i turn up my bass knob and volume on my HU. I have 2 kicker cvx's 12 inch and they are wired to a kicker zx 1500.1 at 2 ohms. i have 4 gauge wire. When i turn my volume up too loud along with the bass knob, i hear a bad noise during parts of some songs. its almost like the amp is not getting enough power to the subs (maybe due to the fact of the fuses im using i dunno) and they make a not so great noise. but i have the subs in 2 separate boxes behind the seat of my truck and the boxes are tiny!!! i think the sound that is being produced might be due to the air getting trapped in the boxes instead of my amp clipping.. when i turn the bass down it sounds better although it is not loud enough to even hear outside of the car or even a substantial amount inside. i dont think im clipping but then again ive never heard clipping so i dont know what to look for!! help please im struggling with this system.. i probably need a cap also because i dont have anything. i have a basic battery and a HP alternator

Re: clipping or too small of boxes?
Monday, October 13, 2008 3:36 PM
If your box is sealed, there's not supposed to be air entering or exiting. If it's ported, the air is getting out. It is possible that your box isn't the right dimensions for the application, and that might be contributing to your noise, but the air is doing what its supposed to assuming the box is structurally sound. The CVXs have a pretty good tolerance for sealed box size, from 1-4.6 ft. cubed.

This noise you keep mentioning. What exactly is it? does the music fade, but still play normally and intelligibly? Or does it sound like an abrupt static noise and the music dies? Some combination?



Re: clipping or too small of boxes?
Monday, October 13, 2008 7:29 PM
well i had to get 1 1/2 inch trim rings to raise it out of the boxes..and one of my subs has a small leak that is letting some air out but they are sealed..but the sound is like not really from the music but the actual subs produce a bass that doesnt sound like the bass from the song..i dont know how to describe it..its almost like the subs are draining music from my dash speakers and producing random bass to go along with the normal bass. the subs kinda go in and out which might mean that a wire has come loose or something?? would the gauge of the wire affect sq? there are just a lot of problems i have to look at!!!
Re: clipping or too small of boxes?
Monday, October 13, 2008 7:58 PM
If your sub has a hole in it that is letter air in an out, that will make a weird noise...


wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: clipping or too small of boxes?
Monday, October 13, 2008 8:02 PM
the sound is almost like the subs are studdering...there might be a bad connection betweet the subs and the head unit im not sure..wat does clipping sound like though just to be safe?
Re: clipping or too small of boxes?
Monday, October 13, 2008 8:08 PM
if the sound is happening at all volume levels, it's not clipping. Clipping on a subwoofer is hard to detect for most people.. It just sounds like a loss of sound quality. That's the only way i can explain it, and most people barely know what good sound quality is, and wouldn't be able to tell the diff between clipping and not clipping anyway, unless it was an extreme case. If you want to see if you're amp is clipping there's a nice STICKY at the top of this forum that will show you how to set your amp as to not clip the signal. Maybe your amp is on the way out, seeing as how you're blowing fuses and your subs are sounding like @!#$, eh?


wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: clipping or too small of boxes?
Monday, October 13, 2008 8:10 PM
the gains are set so wouldn't that keep it from clipping as long as i dont turn the bass knob all the way up and crank the volume and it doesn't do it at all volume levels just when the bass is about half way up as well as the volume
Re: clipping or too small of boxes?
Monday, October 13, 2008 9:09 PM
If your gain is set improperly, then there will be hella clipping. It's entirely possible that you've already thrashed your subs based on how you say you test it (turning it all up until it's audibly affected).



Re: clipping or too small of boxes?
Monday, October 13, 2008 9:11 PM
i didnt set my gain myself a pro installer did and i didnt test it i just turn my bass knob up so i can hear the bass? ive had them in for like 5 days..my gain knob isn't even set high at all
Re: clipping or too small of boxes?
Tuesday, October 14, 2008 7:01 AM
http://www.j-body.org/forums/read.php?f=4&i=151985&t=151953#151985

Disconnect the bass knob completely. You don't need to make 47,000 posts on the same thing.



Re: clipping or too small of boxes?
Tuesday, October 14, 2008 7:22 AM
why should i do that..then how do i play any bass at all

Re: clipping or too small of boxes?
Tuesday, October 14, 2008 8:33 AM
however did we all survive before the times of bass knobs???

if you got it "professionally" installed....then why havent you taken it back and asked them?
Re: clipping or too small of boxes?
Tuesday, October 14, 2008 12:39 PM
because im waiting till my 150 amp fuse comes in then im taking it to them and having them check all the wiring and everything..can u tell me wats so bad about a bass knob if your gains are set?
Re: clipping or too small of boxes?
Tuesday, October 14, 2008 1:08 PM
because your undoing what you did to set the gains, adding more voltage to the speaker, causing clipping



Re: clipping or too small of boxes?
Tuesday, October 14, 2008 1:19 PM
You have to understand clipping can come from any of the sources of the signal, or from the amplifier gain. The deck can clip the signal going to your amp. The Amp can boost the signal into clipping. those bass knobs only purpose that I can find is, if you have some OVERHEAD power, like say when I'm playing certain rap, I could turn my amp up with a bass knob because I'm only using my amplifier for a few hundred watts instead of the maximum power which is a couple thousand watts rms, if I liked that sound better. If your bass isn't loud enough with your amps gain set to the maximum that it is capable of putting out then you need more power, or a more sensitive sub, or maybe a ported box. Simple as that. Your amp can only put out a certain amount of power. After that you start to clip the signal. Your deck can only put out a certain amount of voltage through the pre-amp outputs, after that it starts to clip the signal.


wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: clipping or too small of boxes?
Tuesday, October 14, 2008 1:28 PM
Jonathan Edmund wrote:because im waiting till my 150 amp fuse comes in then im taking it to them and having them check all the wiring and everything..can u tell me wats so bad about a bass knob if your gains are set?


If you'd read all of your 14 posts on the same thing, you'd see http://www.j-body.org/forums/read.php?f=4&i=151985&t=151953#151985



Re: clipping or too small of boxes?
Tuesday, October 14, 2008 6:53 PM
LOL, if you're not blowing fuses, why on dog's green earth would you think that your amp is not getting enough power?????

Have you considered the horrible noise to be induced by lack of sound deadening? Or lack of bracing in the boxes themselves. I've seen both contribute to absolutely horrible sounding bass at high volume levels.


GAM (The Kilted One) wrote: if you think you're that much better than them because you're "correct" I hope your progeny don't turn out as screwed up as yourself.

Re: clipping or too small of boxes?
Tuesday, October 14, 2008 7:28 PM
i dont know whats wrong. it is blowing fuses.
Re: clipping or too small of boxes?
Wednesday, October 15, 2008 9:37 AM
kickers remote knobs i believe arn't bass nobs, they are merely volume knobs. the remote mounted ones. im using them and they arn't a bass boost nor are they a gain so adjusting that wont effect the sound. it could be a gain issue, it could be somene having to much bass boost set on the amp. or on your headunit, from your posts made you really need to just take it to a professional and have it looked at. any reputable shop should have fuses there.


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