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amp start up whine


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hustlin247 
Copper - Posts: 79
Copper spacespace
Joined: June 08, 2004
Posted: June 17, 2007 at 8:35 PM / IP Logged  
I just put in a Power Acoustik 4 channel amp (OV4-600). I was running my speakers from the head unit until now. When the amp first powers on I get a loud whine through all the speakers.
I am using a 4 gauge (which is way more than this amp calls for) ground wire that is bolted to the chassis so I don't think its a ground issue.
And I don't think it's an RCA issue because it happens even if I unplug all the RCA's from the amp.
Any thoughts?
Oh, and I previously had this amp running in another car just fine.
'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery
i am an idiot 
Platinum - Posts: 13,598
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: June 17, 2007 at 9:38 PM / IP Logged  
Does the noise go away after initial startup?
hustlin247 
Copper - Posts: 79
Copper spacespace
Joined: June 08, 2004
Posted: June 17, 2007 at 9:43 PM / IP Logged  
i am an idiot wrote:
Does the noise go away after initial startup?
Yes, it's very short but very annoying.
'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery
hamzter 
Copper - Posts: 116
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: March 15, 2005
Location: United States
Posted: June 18, 2007 at 9:35 PM / IP Logged  
where are your gains set at?
Mark "Hamzter" Cinense
1991 Infiniti G20 w/JDM SR20DE
Eclipse CD8445
MTX Thunder 684
Polk DB6750
Polk DB6500
Optima Red Top in the Trunk
project_86 
Member - Posts: 17
Member spacespace
Joined: May 12, 2006
Location: Canada
Posted: June 19, 2007 at 3:05 AM / IP Logged  

you can run a ground refference wire from your 4 channel to your deck ground to eliminate some interference,  also do you have a sub amp too?  where is this grounded?  should be at the same point the 4 channel is grounded to,  use distro blocks.  good luck,  interesting noises like that are great fun amp start up whine -- posted image.

hustlin247 
Copper - Posts: 79
Copper spacespace
Joined: June 08, 2004
Posted: June 19, 2007 at 11:38 AM / IP Logged  

hamzter wrote:
where are your gains set at?

I've been adjusting my gains while I mess with this and the sounds persists no matter where my gains are set at. :/

'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery
hustlin247 
Copper - Posts: 79
Copper spacespace
Joined: June 08, 2004
Posted: June 19, 2007 at 11:44 AM / IP Logged  
project_86 wrote:

you can run a ground refference wire from your 4 channel to your deck ground to eliminate some interference,  also do you have a sub amp too?  where is this grounded?  should be at the same point the 4 channel is grounded to,  use distro blocks.  good luck,  interesting noises like that are great fun amp start up whine -- posted image.

Well, interestingly enough, since my deck has a brain thats installed on my amp rack (KVT-815DVD) it is actually grounded to the same place as the brain. The sub amp (T10001) is grounded a couple feet away but also bolted directly to the chassis. Is that close enough? It would require longer ground wires to ground them to the exact same spot. And long ground wires are bad m'kay?

I may try running a ground wire from my amp to the deck (that is in the dash)!

'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery
hamzter 
Copper - Posts: 116
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: March 15, 2005
Location: United States
Posted: June 19, 2007 at 12:14 PM / IP Logged  
Just thought I would let you all know...
I have RCAs that were close, but not so close to suspect to the signal output/power input.
I accidentally bumped the RCAs and the noise briefly when away. For a second I thought that it was my RCA inputs/outputs... then I thought it was my RCA cables.
Well, it was sort of it... the cables were not run along side the power, but there were in a general vicinity that made a difference...
my point is check those RCAs if everything else fails.
Mark "Hamzter" Cinense
1991 Infiniti G20 w/JDM SR20DE
Eclipse CD8445
MTX Thunder 684
Polk DB6750
Polk DB6500
Optima Red Top in the Trunk
hustlin247 
Copper - Posts: 79
Copper spacespace
Joined: June 08, 2004
Posted: June 20, 2007 at 3:22 AM / IP Logged  
this was my emailed response from the manufacturer:
HELLO;    YOU ARE NOT MISSING ANYTHING, SOMETHING INTERNAL INSIDE THE AMP AS GONE OUT AND WOULD NEED TO BE REPAIRED.        THANK YOU
Lovely.
'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery
project_86 
Member - Posts: 17
Member spacespace
Joined: May 12, 2006
Location: Canada
Posted: June 21, 2007 at 2:06 AM / IP Logged  
hustlin247 wrote:
this was my emailed response from the manufacturer:
HELLO;    YOU ARE NOT MISSING ANYTHING, SOMETHING INTERNAL INSIDE THE AMP AS GONE OUT AND WOULD NEED TO BE REPAIRED.        THANK YOU
Lovely.
lmao thats so wicked hilarious! number one of the top ten reasons not to buy from a manufacturer. :) but that does make sense, i had an older rockford that when powered up hummed like a mustard, was odd it just started doing it one day. always after warranty is out too it seems.
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