Go Back   Team-BHP > Under the Hood > In-Car Entertainment


Reply
 
Thread Tools Search this Thread
Old 9th July 2007, 20:07   #1
BHPian
 
vishnuvijay's Avatar
 
Join Date: Apr 2007
Location: Cochin
Posts: 173
Thanked: 0 Times
Default Hissing sound from speakers when not playing music. Please help.

Hi, I trashed the OE audio system on my car and now I have the following installed in my car.
HU - Pioneer 4950 Mp3 Player
Front - Kenwood KFC-1650SB 160W Dual Cone
Rear - JBL 937 GT 300W 3 Way Coaxial
Honda OE wiring. ( Original wiring not changed.)

There is a hissing sound when music is not playing. eg: when u pause, in between tracks ect. Sometimes the hissing sound is evident when some songs are played. What could be the reason. The person who installed said that it is natural and he even checked it with another HU, in my car. But I'm convinced that there is some problem.

I plan to upgrade my audio system bit by bit. I mean i'm not trashing what i have got now, but i want to install an amplifier, a sub woofer and if required, better front speakers, all on a budget. i plan to install a 4 channel amplifier to power the 2 rear and 2 front speakers for the time being. Can the Kenwood Dual Cone speakers withstand the amplifier or will it get damaged?
Later when i buy a subwoofer i'll power it instead of the front speakers with the same amplifier. So with the scope for future installations (a subwoofer or better front speakers) which amplifier (brand, specification) should i go for? Should i go for new cables/wiring when i install the amplifier?

But first, please help me with my hissing sound problem.
vishnuvijay is offline   Reply With Quote
Old 9th July 2007, 21:46   #2
Distinguished - BHPian
 
Sam Kapasi's Avatar
 
Join Date: Jul 2005
Location: Mumbai (but wat
Posts: 6,989
Thanked: 1,453 Times
Default

Quote:
Originally Posted by vishnuvijay View Post
But first, please help me with my hissing sound problem.
During this hissing, is your car engine on or off? Does the sound stay the same with the car running and off?
Sam Kapasi is offline   Reply With Quote
Old 9th July 2007, 22:01   #3
Senior - BHPian
 
DerAlte's Avatar
 
Join Date: Mar 2007
Location: Bangalore
Posts: 8,076
Thanked: 2,876 Times
Default

Hi Vishnuvijay,

A few questions before anyone can figure the problem out:

1. Which car? (You have a Wagon R and an OHC listed in your profile)
2. Which sound source is producing the hiss: FM or Audio CD or MP3?
3. Did you listen in when the installer changed the HU to show that "everything was normal"?
4. What settings have been made on the HU (Bass, Treble, Fader, Equalizer, etc.)?
5. At what volume level is the hiss just audible? What is the normal volume level that you hear music at?
6. Is the hiss same from the front as well as the rear speakers? You could fade fully to the Front or Rear to check
7. (Sam has already asked that)
DerAlte is offline   Reply With Quote
Old 9th July 2007, 22:11   #4
Senior - BHPian
 
Join Date: Sep 2005
Location: New Delhi
Posts: 2,462
Thanked: 20 Times
Default

My take... use new speaker cable instead of the stock OE wiring... and your problem will go away.
gunbir is offline   Reply With Quote
Old 9th July 2007, 22:58   #5
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,814
Thanked: 294 Times
Default

Quote:
Originally Posted by DerAlte View Post
Hi Vishnuvijay,

A few questions before anyone can figure the problem out:

1. Which car? (You have a Wagon R and an OHC listed in your profile)
2. Which sound source is producing the hiss: FM or Audio CD or MP3?
3. Did you listen in when the installer changed the HU to show that "everything was normal"?
4. What settings have been made on the HU (Bass, Treble, Fader, Equalizer, etc.)?
5. At what volume level is the hiss just audible? What is the normal volume level that you hear music at?
6. Is the hiss same from the front as well as the rear speakers? You could fade fully to the Front or Rear to check
7. (Sam has already asked that)
These are the all the possible reasons..

Quote:
Originally Posted by gunbir View Post
My take... use new speaker cable instead of the stock OE wiring... and your problem will go away.
I am quite sure this would not be the reason.
low_bass_makker is online now   Reply With Quote
Old 9th July 2007, 23:54   #6
BHPian
 
Wimwian's Avatar
 
Join Date: Feb 2007
Location: Mumbai
Posts: 191
Thanked: 4 Times
Default

I was having this hissing problem whenever the engine was on... the noise used to increase with the engine RPM and v.v. My installer had no clue which component was responsible, so he went for the age old solution - the trial & error method. Changed each part one by one and finally narrowed it down to the HU... the dealer changed the HU and now everything's OK [except the amp tuning has gone haywire in all of this :-(]
Wimwian is offline   Reply With Quote
Old 10th July 2007, 04:48   #7
BANNED
 
Join Date: Jun 2007
Location: Noida
Posts: 612
Thanked: 10 Times
Default

i had this problem too.. but then i grounded the RC cables.. and its fine now
saintsinner is offline   Reply With Quote
Old 10th July 2007, 10:25   #8
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: mumbai
Posts: 22,509
Thanked: 3,885 Times
Default

Quote:
Originally Posted by Wimwian View Post
..[except the amp tuning has gone haywire in all of this :-(]
with an amp my first guess would have been the RCA wire between HU and amp but vishnuvijay does not have an amp.

so untill vishnuvijay answers the gurus cannot offer a solution.
navin is offline   Reply With Quote
Old 10th July 2007, 11:04   #9
Distinguished - BHPian
 
Sam Kapasi's Avatar
 
Join Date: Jul 2005
Location: Mumbai (but wat
Posts: 6,989
Thanked: 1,453 Times
Default

Quote:
Originally Posted by gunbir View Post
My take... use new speaker cable instead of the stock OE wiring... and your problem will go away.
Like navin said, while an RCA cable can pick up enough hiss to be audible, simply because of the peak to peak of pre amplified signal and the fact that the hiss stands an equal chance of being amplified, I have my serious doubts that changing the speaker wire is the answer.

I don't think the audio signal, post-amplification from the HU, is susceptible to audible hiss pick up.

It may change the quality of the sound, but I'm pretty sure changing the speaker cable is not going to get rid of the hiss.
Sam Kapasi is offline   Reply With Quote
Old 10th July 2007, 11:19   #10
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: mumbai
Posts: 22,509
Thanked: 3,885 Times
Default

instead of guessing i think the list of question put forward by Der Alte needs to be answered. That list is pretty comprehensive.
navin is offline   Reply With Quote
Old 10th July 2007, 11:21   #11
BHPian
 
rishibravo's Avatar
 
Join Date: Jul 2006
Location: New Delhi
Posts: 579
Thanked: 6 Times
Default

I had the same hissing sound problem and Gunnu Paaji rectified it. He opened the boot took a screwdriver bit from his magic box.. paused the music...asked us to shut up and did some magic with my GTO 75.4 and problem solved
rishibravo is offline   Reply With Quote
Old 10th July 2007, 12:12   #12
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,814
Thanked: 294 Times
Default

Quote:
Originally Posted by rishibravo View Post
I had the same hissing sound problem and Gunnu Paaji rectified it. He opened the boot took a screwdriver bit from his magic box.. paused the music...asked us to shut up and did some magic with my GTO 75.4 and problem solved
that is simple gain setting not magic...ever good installer can do that. which are quite less in the market.
low_bass_makker is online now   Reply With Quote
Old 10th July 2007, 14:01   #13
Senior - BHPian
 
DerAlte's Avatar
 
Join Date: Mar 2007
Location: Bangalore
Posts: 8,076
Thanked: 2,876 Times
Default

Quote:
Originally Posted by low_bass_makker View Post
that is simple gain setting not magic...ever good installer can do that. which are quite less in the market.
True, but perhaps only Gunbir can do all of that: "take a screwdriver bit from his magic box.. pause the music...ask them to shut up and do some magic" - the others can't.
DerAlte is offline   Reply With Quote
Old 10th July 2007, 14:38   #14
Senior - BHPian
 
Join Date: Mar 2006
Location: Faridabad
Posts: 6,814
Thanked: 294 Times
Default

Quote:
Originally Posted by DerAlte View Post
True, but perhaps only Gunbir can do all of that: "take a screwdriver bit from his magic box.. pause the music...ask them to shut up and do some magic" - the others can't.
Ya I tend to agree and his magic touch does wonder to the sound also..
low_bass_makker is online now   Reply With Quote
Old 10th July 2007, 16:51   #15
BHPian
 
vishnuvijay's Avatar
 
Join Date: Apr 2007
Location: Cochin
Posts: 173
Thanked: 0 Times
Default

Quote:
Originally Posted by Sam Kapasi View Post
During this hissing, is your car engine on or off? Does the sound stay the same with the car running and off?
hi sam, engine is off. but i think it's the same noise whether on or off.
vishnuvijay is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Elantra rare noise (hissing noise) Please help!! manne Technical Stuff 9 28th June 2010 09:24
Hissing sound in NHC Vtec naman Technical Stuff 6 15th August 2008 17:20
Slight Hissing sound from ICE meconi In-Car Entertainment 9 29th January 2008 10:18
Hissing sound from belts in my Avalon adityapd Technical Stuff 17 29th September 2007 08:39
hissing noise from speakers when horn is blown gopz In-Car Entertainment 7 14th June 2007 13:40


All times are GMT +5.5. The time now is 15:49.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks