Team-BHP > In-Car Entertainment


Reply
  Search this Thread
7,557 views
Old 12th November 2008, 09:52   #16
BANNED
 
Join Date: Nov 2004
Location: Bangalore
Posts: 1,440
Thanked: 320 Times

My 75.4 amp is also having issue it plays well but if i play it for longer durations say 30 minutes or try to play loud it shuts either of front channels or sometimes even both, switch off the HU and try after half an hour and again it works fine, checked with my installer and as per him he found one loose soldering in amp and he fixed it, but it worked for just 2 weeks and again it started troubling me.Any pointers on this?
Ajaybiz is offline  
Old 12th November 2008, 10:10   #17
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: Mumbai
Posts: 25,156
Thanked: 9,238 Times

Quote:
Originally Posted by flipsyde View Post
or all of the above?
all of the above! :-)
navin is online now  
Old 12th November 2008, 17:46   #18
Senior - BHPian
 
DerAlte's Avatar
 
Join Date: Mar 2007
Location: Bangalore
Posts: 8,069
Thanked: 2,919 Times

Quote:
Originally Posted by Ajaybiz View Post
... if i play it for longer durations say 30 minutes or try to play loud it shuts either of front channels or sometimes even both, switch off the HU and try after half an hour and again it works fine, ...
Air circulation / amp cooling problem - "thodi hawa aane de"!
DerAlte is offline  
Old 13th November 2008, 10:16   #19
BANNED
 
Join Date: Nov 2004
Location: Bangalore
Posts: 1,440
Thanked: 320 Times

Nope that could not be the case as 99% of the time i run my AC as well :(, looks like need to checked up again or to put PC fans.
Ajaybiz is offline  
Old 13th November 2008, 15:22   #20
Senior - BHPian
 
DerAlte's Avatar
 
Join Date: Mar 2007
Location: Bangalore
Posts: 8,069
Thanked: 2,919 Times

Even if AC is on, local conditions near the amp may cause temporary overheating. Below 35deg ambient, it is the airflow over the heat-sink that counts, not the ambient temperature in the cabin. No, PC fans will not be needed, just ensure that air-flow is not restricted around the amp.

Is your amp below the seat or behind the rear seats? I doubt if it will overheat in the boot; below the seat heat build-up is possible.
DerAlte is offline  
Old 13th November 2008, 15:45   #21
Senior - BHPian
 
Join Date: Feb 2006
Location: BLR
Posts: 2,222
Thanked: 26 Times

I think heat is one of the reasons why the 1004 has an extruded aluminum chassis vs the plexi of the 75.4

You running them bridged for a Sub Ajay?
s0uljah is offline  
Old 13th November 2008, 15:47   #22
BANNED
 
Join Date: Nov 2004
Location: Bangalore
Posts: 1,440
Thanked: 320 Times

Its behind rear seat and if its over heating issue then why not the rear channels are facing any issue, must be Amp needs some repairing work.
No man all channels are dedicated to their own spekers, i have Mono amp 301.1 but still its not connected.

Last edited by Ajaybiz : 13th November 2008 at 15:53.
Ajaybiz is offline  
Old 13th November 2008, 17:08   #23
Senior - BHPian
 
nitrous's Avatar
 
Join Date: May 2004
Location: UAE/Lon/Madras
Posts: 6,965
Thanked: 322 Times

Ajay, how thick is your power and ground wire for the 75.4?
nitrous is offline  
Old 13th November 2008, 19:53   #24
BANNED
 
Join Date: Nov 2004
Location: Bangalore
Posts: 1,440
Thanked: 320 Times

Dont know much about those figures but its quite think and its done by Autofusion's Anwar and the fuse holder is showing 80A fuse so must be quite capable cable, same size cable is there for mono amp.Will post the pics tomorrow.
Ajaybiz is offline  
Old 13th November 2008, 23:28   #25
BHPian
 
flipsyde's Avatar
 
Join Date: Nov 2006
Location: Chennai
Posts: 644
Thanked: 84 Times

Quote:
Originally Posted by Sam Kapasi View Post
  • Check the thickness of the power cable - almost as thick as a pencil. red in colour. seems well insulated.
  • Check your grounding point at the chassis, if need be, remove, sandpaper and reconnect to chassis. - this seems fine too but i'l try sanding the chassis this weekend
  • Check the connection to battery and check battery terminal. - its properly connected. battery terminal also not shorting with anything
  • Last, but not the least, check for water/moisture leakage around the amplifier area. - this is the first thing i did. found nothing wrong
My replies in bold. Looks like I might need a new horn relay.
flipsyde is offline  
Old 13th November 2008, 23:30   #26
BHPian
 
flipsyde's Avatar
 
Join Date: Nov 2006
Location: Chennai
Posts: 644
Thanked: 84 Times

Quote:
Originally Posted by navin View Post
all of the above! :-)
Looks like I'm going to be spending this weekend with the car!!
flipsyde is offline  
Old 14th November 2008, 00:15   #27
Team-BHP Support
 
Jaggu's Avatar
 
Join Date: May 2004
Location: Bangalore
Posts: 20,207
Thanked: 15,848 Times

How is your battery, asking since this happened after overnight parking where the battery might have lost some juice. Reply from a NON ICE person, please excuse

Then again it might be stupid since car would have been parked in office during day also.

Ill go with gain setting and wiring before anything else.

Last edited by Jaggu : 14th November 2008 at 00:20.
Jaggu is offline  
Old 14th November 2008, 00:27   #28
BHPian
 
redfire's Avatar
 
Join Date: Jan 2008
Location: Chicago, USA
Posts: 449
Thanked: 27 Times

@flipsyde - is your power cable is having pencil thickness, red in color and have a transparent kind of insulation? Is that a BOSS or similar amp kit? Then you must change it.
redfire is offline  
Old 14th November 2008, 10:30   #29
BANNED
 
Join Date: Nov 2004
Location: Bangalore
Posts: 1,440
Thanked: 320 Times

My wiring kit is Scosche.
Ajaybiz is offline  
Old 14th November 2008, 11:04   #30
Team-BHP Support
 
navin's Avatar
 
Join Date: Mar 2004
Location: Mumbai
Posts: 25,156
Thanked: 9,238 Times

Quote:
Originally Posted by flipsyde View Post
Looks like I'm going to be spending this weekend with the car!!
Not if you are married! :-)

Now now try this. connect your front speakers to the the amp channels that your rear speakers are connected to and vice versa. now if your rear speaker trips you know that it is the amp that has a fault if it the front speaker that trips again check the wire and terminals of the front speaker
navin is online now  
Reply

Most Viewed
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Copyright ©2000 - 2024, Team-BHP.com
Proudly powered by E2E Networks