First of all, I like to say Hi~! to everyone here. As I newbie to car audio, there's something I don't understand on my upgrade.

Ok my car audio setting, HU, 1unit 4 channel amp, 1 unit 2 channel amp, 1 unit crossover, Front speaker will be 3 way component (newly installed), rear speaker is JBL 2 way component, then 1 subwoofer.

4 channel amp for 3 way and 2 way speakers

2 channel amp for subwoofer.

The problem. Newly install 3 way component had the sound of like aeroplane flying "yeeeee" when driving. And there's amp delay problem on the mid n woofer.


Every was fine, untill the technician burn my 2 channel amp n replace a same1 for me(is old unit), and I upgrade my 3 way component.

Any expert know the cause or the way to resolve this problem?

take it back to the installer let them troubleshoot
too many posibility

bad grounding, cables placing, fuse, HU output

The installer also headache about what's the problem.
Hmm.. grounding check, cables check, fuse check, even modify HU. Any other possibility..

Damn unhappy with the upgrade that cause me such problem.

then u shud ask them to swap the HU, amps, crossover and see which is the culprit if it isn't the cables problem

make sure the power cable and speaker cable is seperate (shud be 1 at the left side..1 at the right to prevent interference)

Yes the cable is seperate that way. Hmm..time comsuming headache thing, guess need to put my car there for another week.

Bro, most propably it's the RCA cable fault, If you are using Coaxial cable type, please use the one that with foil shielding. But the better is to use the twisted pairs type of cable, these twisted pairs, will form an electromagnetic shield which will reject the electromagnetic noise.

if u bought the equipment from them
they have the responsibility to troubleshoot it

I agree, they should be able to troubleshoot it. BTW, what is your location bro DeReturner? maybe I can help?

Last time, I'm was using the coaxial type cable, it still got whinning noise eventhough I already isolate the power cable from RCA cables, then I DIY the twisted pair cables, the problem gone!

the advantage of twisted pair is the signal will not reach at same time..so no interfere on each signal...so less noise..but it;s not really 100% noise free....btw, good cable are alwyas in coaxial..dunno y...maybe because the coaxial can transmit data more accurately....

Hmm..didn't use twisted pairs before, is a good suggestion.

Yes it is, so I throw my car back to them last night, just tell them I don't care how, just get the problem solve. I can leave it till weekend. I presume should be more than enough time for them.

My location is Penang Island. Mostly all here from KL or Selangor?

I at Penang Island le..
DeReturner, May I know which shop install the ICE for you?

Too bad.. i'm from terengganu..

bcos the transmission is more accurate
coax is basically more superior than TP anytime in any aspect
but in terms of noise...

Hmm..so normaly how to overcome noise problem?

good grounding, power and ground cable isolation, additional grounding between the equipments(from the troublesome amp body connect a wire to the other equipment's body... mostly amp to HU), change battery, check alternator... RCA isolation, speaker wire and power cable isolation... mayb got even more...

happy troubleshooting...

Actually, twisted pair's main point is that noise will cancel each other out due to the twisted design and not exactly because it'll arrive at a different time.

Coaxials are superior in noise rejection except those with 95% braided outer shield and above, the braided outer shield has the capability to prevent noise from entering the signal(in the core in the middle)

Wah, is like start from scratch again..
Thanks for the idea, oh well, do hard or do none..

Coaxials cable with good shield very expensive eh..

But before upgrade all fine, I presume the cable running should be fine.

Just remember, don't let the technician install noise isolator. it will sound awful.

Actually, the cheapest coaxial based RCA cables would be to get those used in Video transmission, namely, RG-6(less flexible due to single core) or RG-59(more flexible due to multi-strand core), but try to look for branded ones as they'll usually have a higher percentage braided foil.

Beldens or Canare are available locally at a decent price for these coaxial cables. It's waaaaaaaay better than the usual cheap stuff RCA available for RM30-50 usually

I just use CAT5-e cables, 4 pairs of twisted cables inside, but I use one CAT5-e cable per channel, which means, 4 twisted pairs per channel, it works pretty good.. very cheap.. haha..

Hmm...I still wondering about the outcome of changing cable. If it doesn't much effect I'll found not worthy.

However, if it solve my "whinning" effect problem sure I'll change..haha..

Bro, check the RCA cable output from HU, don't wrap the RCA cable with HU's acc or batt wire close together with wire tape.

I'll drop by to look into that, I didn't do the installation. Thanks man.

Had comfirm that RCA cable output from HU, didn't wrap the RCA cable with HU's acc or batt wire close together with wire tape.

Change HU test same, change RCA cable solve the problem.
Conclude that HU output 2V insufficient, so instead of change cable, just re-tune, and it solve. What the heck the installer do I also dunnu. I'm so noob. Any pro please explain?

Miss out reply. Sorry sorry.

I done it in Hutton lane Class Tech.

This shop skill good meh?
Price ok mah?

Here the story goes. At first is like 5 years back, when they just started. A good fren recommend me to them. I go there and started my first ICE. The job the tunning, the testing. The proccess impressed me. I actualy in the workshop for the whole proccess from head to toe. Then untill after completion, me go test out with fren frens which they have ICE before me. My SPL beat them with 1 sub-woofer where they got 2.
Then all started get interest. Soon whole group come in 1 by 1. Times goes me and the pll there become fren lor...

And was some time never get back there after my car total lost. Lately going back for setup ICE again. Oh well, the service is like horrible. Maybe that happen in most case, where the business grow, then service drop....

Or maybe only unprofessional service on me as we fren long time liao..

Edit: Price to others I not sure, so far to me and the folk I bring there all feel fair. If you found a better place or better technician I would like to see them. Personaly I feel Class Tech is pro, just he lazy to tune.

This post has been edited by DeReturner: Aug 26 2006, 12:36 PM

Haha... Penang most of the shop know install ICE but don't tune SQ le...
But still got some skillfull shop la...

Some aftersell service suck, I face before my ex Hu broken down within warranty but the installation shop Crystal Sound at Sg 2 refuse to claim for me due to I install amp & speaker at other shop...
So I never go back there since it near my house...

Now mostly I go to Alpha, Golden Auto & Asacar...

i went to golden auto yesterday as recommended by u ....the older brother was kind enuff to explain stuff on ICE to me, i let him run his mouth on ICE so loud that other ppl looking at me one kind only ...hehehehe.....then, the other brother helped by testing up few speakers for me which was already preinstalled in their custom box in show room.....im kind of impressed by the warranty thing he gave me...

told me that i could test the speakers that i bought for 1 week first, if im not satisfied with the sound or quality of the speakers installed, i could have change them to something better ...of cos cannot take money back ler ...hehehe...

offered me RM280-300 for sound proofing front 2 doors of my fish ...single layer that is ler... may i ask where is asacar in penang?

Today I go to Golden Auto, they got Nakamichi 4 channel amp PA-2004 sell for RM2800 ++, price can discuss le...
Wonder this amp with 4 x 100 RMS suitable for SQ or not? My friend want to try it...

If can, you better visit few shop loh... make compare..
Alpha's uncle tuning skill one of the best in penang... but now his son tuning liao, wonder la.. but you can try la..
Asacar at Kulim.. stuft cheaper than Pg... installation skill good also

well things come cheaper with a price ....that is the time and cost that is spent on distance and travelling ....its about an hour more or less travelling time from penang island and another hour back depending on traffic condition....

anyway, thanks sifu...

If original stuft cheaper than Penang few hundred to thousand le?
And their skill quite good also.
Would you go there...?
Hehe... this is difference case liao...

if difference about few hundreds to thousand, sure i wont miss it....hehehehehe....

Distance won't be any prob.

If there's a huge diff why not.. Maybe 1 day we all go together..


Alpha, Golden Auto. Where are they? Well, Alpha sound familiar can't recall, refresh me please. Is Tokyo still as good as before?

Alpha = Burma Road, Golden Auto = Bukit Jambul.
Tokyo? I never heard before...

Tokyo = Dato'Kramat, behind Federal Cinema(Old time), now dunnu some finest centre or night club d.

Was well known in the 90s. I never been there tho. My fren did, comment that they are good, but expensive.

If they skill good, then price expensive is OK la...
But if the price expensive & u not satisfly after install it... Then you are become "water fish" lol..