Another audio query...

gkrishn · 23rd May 2005, 15:48

Okie so i have completed the setup...

its sony 504z amp
pioneer 1340, 13cm front
ts20, front
and a 6991 rear.

I have one problem with this setup though. When i kept the volume at "1", there a noticable "hizzz" sound. As the volume increases, this dosnt disapear, but is less pronounced due to the increase in music volume.
Any idea on who could be the source for this "hizz"??? And how to elimnate this??

The head unit has remanined unchagned. And earlier i am not sure this hizzing existed or not...

Thanks,
GK

mohit · 23rd May 2005, 15:51

Hey GK...... how much was the damage? Where did you get it done from? Sundaram?

ajmat · 23rd May 2005, 15:56

Quote:

Originally Posted by gkrishn

Any idea on who could be the source for this "hizz"??? And how to elimnate this??

The head unit has remanined unchagned. And earlier i am not sure this hizzing existed or not...

Thanks,
GK

If it is a whine - you need a suppressor to be added

gkrishn · 23rd May 2005, 16:16

The damage with the boss wiring kit is 16k. Brought it in JC road. Got it fitted in sundaram. They charged 1.5k for fitting.

Ajmat,
u can check it out when ur here next time.

GK

Harrie · 23rd May 2005, 18:54

the whine could be because the RCA cables and the power cable for the amp are lying nearby. Happens in many installs. You will have to move the RCA cables away from the amp and mount the amp on rubber inserts. The earth for the amp should preferebbly be given seperately.

Or you can go for a filter which would supress the noise.

navin · 23rd May 2005, 21:10

1. does the tone change when you rev the car? if so it is alternator whine.
2. does it sound like the hiss you get in the days of tape? if so your tweeter XO might be to blame.

please describe the complete nature of the hiss and when it occurs or any changes in tone and volume.

gkrishn · 24th May 2005, 08:18

Well its like this...
When the volume is at zero, there silence. Nothhing to be heard.
When the volume is at one, this hizz apears. With the music volume very much muted but audible.
When the volume is increased one step at a time, the music volume too increases, but the hizz volume remains at the same level. After 4,5 level of volume, the hizz even though its still present, is not audible as its completly overvelmed by the music volume.

I have tried 2,3 CDs, both mp3 and audio. Its the same.

navin · 24th May 2005, 13:16

check all ground loops. you never know what they pick up. do you get any noises in our speaker when you operate the horn, power windows, etc.

what is the nature of the hisss. does it sound like a motor boat or like th hiss of audio tape (pre dolby)?

gkrishn · 24th May 2005, 13:29

Quote:

do you get any noises in our speaker when you operate the horn, power windows, etc.

Nope.

Quote:

like th hiss of audio tape (pre dolby)?

Its more like this.

ajmat · 24th May 2005, 16:50

Quote:

Originally Posted by Harrie

the whine could be because the RCA cables and the power cable for the amp are lying nearby. Happens in many installs. You will have to move the RCA cables away from the amp and mount the amp on rubber inserts. The earth for the amp should preferebbly be given seperately.

Or you can go for a filter which would supress the noise.

Harrie

I need to buy you a beer, my system started whiningg - wife asked when is the car taking off? Today, lunch break , I moved the amp and sorted the wires and hey presto - pure music

Thank

navin · 24th May 2005, 19:39

my guess is the hiss in only from the front. check that. if so the tweeter Xo maybe to blame.
if the hiss is n all 4 spekaers you got a bum amp. get your dealer to check you amp by installing in another amp for testing and checking your amp in another known good install.

Harrie · 25th May 2005, 09:11

@ ajmat: anytime

I had the same problem in the uno also. Some one on sounddomain forum suggested that i should try moving the RCAs away from the power line.

23rd May 2005, 15:48	#31
gkrishn BHPian Join Date: Aug 2004 Location: Bangalore Posts: 648 Thanked: 144 Times View My Garage	Okie so i have completed the setup... its sony 504z amp pioneer 1340, 13cm front ts20, front and a 6991 rear. I have one problem with this setup though. When i kept the volume at "1", there a noticable "hizzz" sound. As the volume increases, this dosnt disapear, but is less pronounced due to the increase in music volume. Any idea on who could be the source for this "hizz"??? And how to elimnate this?? The head unit has remanined unchagned. And earlier i am not sure this hizzing existed or not... Thanks, GK
	() Thanks

23rd May 2005, 15:51	#32
mohit BHPian Join Date: Sep 2004 Location: Toronto / Kurukshetra Posts: 677 Thanked: 168 Times	Hey GK...... how much was the damage? Where did you get it done from? Sundaram?
	() Thanks

23rd May 2005, 16:16	#34
gkrishn BHPian Join Date: Aug 2004 Location: Bangalore Posts: 648 Thanked: 144 Times View My Garage	The damage with the boss wiring kit is 16k. Brought it in JC road. Got it fitted in sundaram. They charged 1.5k for fitting. Ajmat, u can check it out when ur here next time. GK Last edited by gkrishn : 23rd May 2005 at 16:18.
	() Thanks

23rd May 2005, 18:54	#35
Harrie BHPian Join Date: Feb 2005 Location: KA 03, KL 12, TN 38 Posts: 701 Thanked: 36 Times View My Garage	the whine could be because the RCA cables and the power cable for the amp are lying nearby. Happens in many installs. You will have to move the RCA cables away from the amp and mount the amp on rubber inserts. The earth for the amp should preferebbly be given seperately. Or you can go for a filter which would supress the noise.
	() Thanks

23rd May 2005, 21:10	#36
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,321 Thanked: 9,501 Times	1. does the tone change when you rev the car? if so it is alternator whine. 2. does it sound like the hiss you get in the days of tape? if so your tweeter XO might be to blame. please describe the complete nature of the hiss and when it occurs or any changes in tone and volume.
	() Thanks

24th May 2005, 08:18	#37
gkrishn BHPian Join Date: Aug 2004 Location: Bangalore Posts: 648 Thanked: 144 Times View My Garage	Well its like this... When the volume is at zero, there silence. Nothhing to be heard. When the volume is at one, this hizz apears. With the music volume very much muted but audible. When the volume is increased one step at a time, the music volume too increases, but the hizz volume remains at the same level. After 4,5 level of volume, the hizz even though its still present, is not audible as its completly overvelmed by the music volume. I have tried 2,3 CDs, both mp3 and audio. Its the same. Last edited by gkrishn : 24th May 2005 at 08:20.
	() Thanks

24th May 2005, 13:16	#38
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,321 Thanked: 9,501 Times	check all ground loops. you never know what they pick up. do you get any noises in our speaker when you operate the horn, power windows, etc. what is the nature of the hisss. does it sound like a motor boat or like th hiss of audio tape (pre dolby)?
	() Thanks

24th May 2005, 19:39	#41
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,321 Thanked: 9,501 Times	my guess is the hiss in only from the front. check that. if so the tweeter Xo maybe to blame. if the hiss is n all 4 spekaers you got a bum amp. get your dealer to check you amp by installing in another amp for testing and checking your amp in another known good install.
	() Thanks

25th May 2005, 09:11	#42
Harrie BHPian Join Date: Feb 2005 Location: KA 03, KL 12, TN 38 Posts: 701 Thanked: 36 Times View My Garage	@ ajmat: anytime I had the same problem in the uno also. Some one on sounddomain forum suggested that i should try moving the RCAs away from the power line.
	() Thanks