Aeroplane!!!

[resilienthunter]

what exactly is aeroplane sound?? psshhhhhhhh?? eeeEeeee?

 

[darwin333]

Try this

hey fren,
i suggest you try this.....

check all your rca's from yout hu to ur amps.make sure that it is tightly connected to it.

are you using components for ur front? if yes, check wheter it is far away enough from your speakers... try moving it further apart, or if not, take an anti static spounge, wrap around it.

try it out. i also agree that the brand of ur player does make an impact to it to. so what brand u using??? :)

 

[chilskater]

i have this problem too..wat i did is take extra audio cable and ground it on the HU chasis to the passenger chair..still have but slightly senyap...my AMP is using power cable as its grounding wire...

 

[menghua84]

the problem never been solve for my car
i'm living with it
but its from my amp
when i try other amp its ok
so i tot my amp kong
but i tried putting my amp on others car
but no aeroplane sound..
so i get fedap d
now i turn my amp to the most minimal..
then when i'm listening to music
i turn my hu volume high
as i'm into sq but no more sq now as it is destrayed by aeroplane...

same thing happen to me also.. if using other amp no aeroplane sound 1... mine even worsr.. when horn or off the air-con got "pak!" sound come from tweeter 1.. in the end i seldom horn other cars d... haiz.. installed a grounding kit.. somehow the sound decrease a bit.. i'll try to minimum the gain later.. should decrease the sound.. but duno how's the sound system will be like then..

 

[Zenn]

aeroplane sound is the annoying whine u hear as u press the accelerator, usually called alternator whine. although sometimes u can get it constantly with or without revving.

the source can be one or many, hard to locate bcoz it is time consuming and tiring. could be anything from amp grounding, rca cables, rca ports or the amp itself. sometimes spark plug wires.

if u have the time, skill and resource u can swap (with a friend or a spare) every item thats a suspect, eg) amps, HU, cables, etc. then u know which is causing the problem, so u can get it rectified.

 

[Raymond_Hu]

mine system also having the same problem. I took to an accessories shop, that guy use a "booster??" (a pair of wires with cylinder thing?) then it solve the aeroplane sound. but there is still some sound left..... it sounds "ddd..ddd...ddd....dddd....dddd" non-stop unless I off my cd player. is that also consider aeroplane sound? any solution for it?

 

[trex92]

"ddd dddd"...? could be, but check this, if u rev the accelerator does the sound become louder or does it become more constant like "dddddddddddd"...?

 

[gocitygo]

hmmm my aeroplane sound juz came from 1 tweeter only...weird... how come ahh zzz.zzzzzzzzzz ahhh annoying!!!

i also had the same problem before. then my installer found out that the problem was due to the crossover placement too close to the power source. after moving the crossover to another location, the problem disappear.

 

[Raymond_Hu]

trex92"ddd dddd"...? could be, but check this, if u rev the accelerator does the sound become louder or does it become more constant like "dddddddddddd"...?

yes .... exactly just like that. what is the root cause? how to solve this problem.... it was very annoying......

 

[kyheng]

In general, airplane sound is cause by cheap amp, grounding no good, the power cable put too near to RCA or speaker cable. If use thicker plug cable and sport spark plug will cause this problem is not likely for my opinion. This kind of statement will come out from most of the installers. If because of plug and cable then how do we say about the racing cars that using thick cable?

 

[trex92]

In general, airplane sound is cause by cheap amp, grounding no good, the power cable put too near to RCA or speaker cable. If use thicker plug cable and sport spark plug will cause this problem is not likely for my opinion. This kind of statement will come out from most of the installers. If because of plug and cable then how do we say about the racing cars that using thick cable?

thick and not properly insulated plug cables don't cause aeroplane sound, but it causes EMI sounds. You can hear the spark plug firing sound that sounds like "zztt zztt zztt" instead of aeroplane's "wheeeeeeeee". Imagine that I had experienced this on my Putra's original ICE (nothing changed, not even speakers) when i changed my spark plug cables to 10mm ones.

 

[Raymond_Hu]

trex92, you know how to solve the "ddd ddd ddd" sound?

 

[trex92]

trex92, you know how to solve the "ddd ddd ddd" sound?

try the following:-

1. Did u change spark plug cables to thicker ones? If so, swap back the old ones and see whether the noise goes away or not.

2. I presume u got amps set up on ur ICE? check the connections. Perhaps ur amp gain is too high. If ur amp gain is too high i noticed aeroplane sound becomes louder.

3. Check ur RCA cables for any broken or bad connection.

4. Perhaps install a grounding kit for ur car. For me, adding a grounding kit reduced my aeroplane sound to a bare minimum which I then turned down the gain and voila, the aeroplane sound was totally gone.

 

[kyheng]

Or change to a high powered battery also might help...

 

[Raymond_Hu]

hmmm....... so many possible way to settle it.... looks like many thing can cause that sound ya? and from the solution like changing spark cable, larger battery and etc. looks like really costly....:frown:

 

[kyheng]

You can do it the cheap way : install less component like eletronic crossover and pre-amp, this is the thing can cause the sound to come if you buy a cheap one, install a high powered 4 channel amp that can punch a sub so 2 channel for speaker, the other is for sub.
Or the expensive way is you own self can know already, go to a shop and they will tell you how to spend more money in their shop....

 

[trex92]

hmmm....... so many possible way to settle it.... looks like many thing can cause that sound ya? and from the solution like changing spark cable, larger battery and etc. looks like really costly....:frown:

no no... i didnt ask u to change ur spark plug cables, but i asked u whether u did or not.

As for the battery, it is not a solution lar, aeroplane sound is never caused by the battery but by the alternator.

 

[kyheng]

But sometimes higher powered battery does help abit, as most of us connect the amp direct from a battery, not from the alternator, if not why some ICE companies produce their own battery? High powered alternator may help also. Some of the other country's forum on ICE also mention this. It also state that power cable cannot put too near to a speaker or RCScable, as this cause interuption between them.

 

[trex92]

But sometimes higher powered battery does help abit, as most of us connect the amp direct from a battery, not from the alternator, if not why some ICE companies produce their own battery? High powered alternator may help also. Some of the other country's forum on ICE also mention this. It also state that power cable cannot put too near to a speaker or RCScable, as this cause interuption between them.

bigger batteries are for powerful ICE that drains a lot of power. It does not help to lessen aeroplane sound, as i said aeroplane sound is caused by the alternator. Alternator charges the battery and ur ICE is connected to the battery hence ur ICE is connected to the alternator (that is why they said power cable cannot put near signal cable). As the alternator does not run at a fixed RPM (it varies according to the rev of the engine), that is why when u rev high the aeroplane sound increases in pitch likewise. If i connect an ICE system directly to just a standalone battery (without alternator), there would never be an aeroplane sound.

Otherwise also how does a grounding kit (which among its many grounding points is also grounded directly to the alternator) helps reduces aeroplane sound?

Another headache for u is that, changing to a bigger battery, ur alternator might not be able to meet up to the battery's charging requirements. Hence ur battery would often never be charged full and in the long run, battery life deteriorates.

 

[kyheng]

Got airplane sound? Aiyah, why you using thick spark plug cable, like that sure got one. Better you add a ground cables in your. You have to change a thicker power cable also and a relay to cut off the airplane sound, blah blah blah...

This is the statement that will come out from shop installers. Looks like you are one of them. As I mention ealier, they tap the supply from battery to amp, not battery > alternator > amp. Alternator is involved on charging back the battery, but that is the later part. So install a higher powered battery is better. If original car battery is 45amp, then change to a 60amp output one. Mine is Century with 13 piece (60amp). Last time I also use a pre-amp and thick spark plug cable(8mm-9mm) with airplane sound, the installer said its come from the cable. But after I install Pioneer 5750 and bypass the pre-amp, guess what? The sound missing. Then I know that is pre-amp is the cause of problem, not the cable. But now the sound comeback, have to say just too bad, then go to a service center and check my battery is almost time to retire. The battery I used it for 2.5 years already. So again I have to say, battery does play an important role in ICE. People that come out statement with use thick plug cable can cause the problem is because they don't know about electronics. If they admit is their product got problem, then they can close shop already after some time. But the battery plays the main role in ICE is my opinion only, nothing to do with others, atleast this what I faced now. Not like some people, direct can say people's statement is false and his statement is right. We see things must be from both sides, not from own side only. In ICE, there are alot of topics related to this, not just ZTH only, if can try to serch the forums from the world one, there we can learn more from them.