Can't figure it out but didn't want to get "too" crazy".

So let me paint a picture.

Car: 09 Corolla
Amps: 4 Channel class D, 2 Channel class D bridged to 4ohm subwoofer

Wiring: 8g power wire (x2) running through bolt down fuses (60A for the 4 channel and 80A for the 2 channel). Grounds are separate and screwed to the chassis in the trunk, paint scraped off for better conductivity. RCAs ran on opposing sides of car to trunk.

Sub: Polk 12inch MM SVC

Issue: For the last couple months I have had an odd noise coming from the subwoofer. It sounds like white noise with popping here and there, sometimes it is there sometimes it goes away (can post video if it helps). I immediately though of a grounding issue as I removed the RCAs from the 2 channel amp and the noise remained. I moved the ground 3 times to no avail.

Looked at the power wires leading from the battery and the 2 channel had a highly oxidized wire, I mean this wire looked grey instead of copper so I cut it off and reseated it properly. That did not change the issue and it remained. I don't want to rip the whole install out and redo it all however I have a feeling this is wiring related.

I did not do the initial install, it was done by a reputable installation center local to my area. If it was my call I would have ran a 4g power and ground to distribution blocks then 8g out to my components as I feel there is less points of failure.
Living room

Mains: Paradigm 90P
Lows: Velodyne CHT12, Pioneer SW-8Mk2
Power: Marantz SR7000
Tv: Samsung UHD 55' Curved 4k

2 Channel Den

Mains: SDA2B Upgraded XOs and Binding Posts
Pre: Denon PRA-1200
Power: Adcom GFA-545
TT: Pioneer PL510
Tv: Samsung UHD 55' 4K

Noggin Rockin'

Phillips L2
Grado SE80
Harman Kardon CL
Little dot 1+/GE JAN 5654w

Closet of Dreams:

Harman Kardon AVR130
Yamaha HTR5590
Polk RTA11TL
Polk TSI200s
New Large Advents 25th Anniversary Edition
Bravo V2/RCA Clear top Conn branded 12AU7
Yamaha AV-34

"Temptation is the manifestation of desire which equals necessity." - Mikey081057
" I have always had a champange taste with a beer budget" - Rick88
"Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
"Those that don't know, don't know that they don't know." - heiney9

Comments

  • FestYboyFestYboy Posts: 2,776
    What's to say the 2 ch amp hasn't failed? Have you checked the board for corrosion?
  • Mikey081057Mikey081057 Posts: 5,525
    Same with car running or not?
    HT:Polk LSiM 706 LSiM 705's VR3 LSiM 703's LSiM 702's| Marantz AV7702 | Sunfire TGA-7401 | Oppo BDP-103D | Sony PS4 | Directv Genie HD DVR | Samsung 64" Plasma | SVS PB13 Ultra | MIT EXP 2's (Fronts & Center)

    ManCave: Parasound Halo A21 | Parsound Halo A52+ | Marantz AV7004 AV PrePro | Usher Dancer Mini-x DMD's | Usher BE-616 Center | SVS Ultra Surrounds | SVS SB4000 Sub |Oppo UDP 203 | MIT Shotgun S3's | Marantz SA8004 SACD | Music Hall MMF 5.3se TT w/ Soundsmith Carmen | Mytek Brooklyn DAC+ | HP Elite Slice PC | Samsung 50" SUHD TV | Sony PS4 Pro

    Patio Polk Atrium 8's |Marantz 2252B |

    Office Bluesound Node2 | Polk SDA SRS 2.3 | Marantz 2385 |

    Bedroom Peactree Nova 125SE | Focal 905's | Bluesound Node | SVS SB2000 Sub

    Garage Yamaha R-N303BL | Polk Monitor 5B's

    Closet Yamaha M80 | 2 Polk MP2K subs| Yaqin MC100B with Shuguang Treasures KT 88's & CV181Z's | Tesla E83CC's |
  • codycatalistcodycatalist Posts: 1,620
    edited September 26
    Same with car running or not?

    Indeed. Could be the amp but my experience points me to that being the last ditch component that has gone out.

    I have been just living with it, not too concerned about the sub getting smoked. I'll just buy a new one. Im apprehensive to pull the install out as I'm not "graceful" with car parts. See this wasnt an issue on my cars as I didn't care but this is the other half's vehicle.
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
  • Sounds like amp failure to me.
    Oh, Listen here mister. We got no way of understandin' this world. But we got as much sense of this bird flyin in the sky. Now there is a lot that bird don't know, but it don't change the fact that the world is happening to him all the same. What I am tryin to say is, is that the course of your life, well its changing, and you don't even see it- Forest Bondurant
  • JstasJstas Posts: 13,681
    Where is the amp grounded?

    I would check that before I threw away the amp.

    I've found through my many, many years with car stereos that people will ground stuff, poorly, in the worst places.
    You're just jealous 'cause the voices don't talk to you!
  • codycatalistcodycatalist Posts: 1,620
    Jstas wrote: »
    Where is the amp grounded?

    I would check that before I threw away the amp.

    I've found through my many, many years with car stereos that people will ground stuff, poorly, in the worst places.

    Yeah ground was my thought initially as well. I have it grounded in the trunk to the chassis. I changed grounding points already, made sure to scrape paint off etc etc.
    Sounds like amp failure to me.

    Possibly but considering this amp is only 2 or 3 years old I don't think that's the case. Doesn't mean it isn't a component failure in the amp but it is built well enough I want to look other places first.
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
  • Mikey081057Mikey081057 Posts: 5,525
    Maybe there is a loose nut behind the steering wheel?

    :D :D :D
    Just kidding...

    HT:Polk LSiM 706 LSiM 705's VR3 LSiM 703's LSiM 702's| Marantz AV7702 | Sunfire TGA-7401 | Oppo BDP-103D | Sony PS4 | Directv Genie HD DVR | Samsung 64" Plasma | SVS PB13 Ultra | MIT EXP 2's (Fronts & Center)

    ManCave: Parasound Halo A21 | Parsound Halo A52+ | Marantz AV7004 AV PrePro | Usher Dancer Mini-x DMD's | Usher BE-616 Center | SVS Ultra Surrounds | SVS SB4000 Sub |Oppo UDP 203 | MIT Shotgun S3's | Marantz SA8004 SACD | Music Hall MMF 5.3se TT w/ Soundsmith Carmen | Mytek Brooklyn DAC+ | HP Elite Slice PC | Samsung 50" SUHD TV | Sony PS4 Pro

    Patio Polk Atrium 8's |Marantz 2252B |

    Office Bluesound Node2 | Polk SDA SRS 2.3 | Marantz 2385 |

    Bedroom Peactree Nova 125SE | Focal 905's | Bluesound Node | SVS SB2000 Sub

    Garage Yamaha R-N303BL | Polk Monitor 5B's

    Closet Yamaha M80 | 2 Polk MP2K subs| Yaqin MC100B with Shuguang Treasures KT 88's & CV181Z's | Tesla E83CC's |
  • codycatalistcodycatalist Posts: 1,620
    Maybe there is a loose nut behind the steering wheel?

    :D :D :D
    Just kidding...

    I haven't ruled it out :p
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
  • pitdogg2pitdogg2 Posts: 10,839
    Maybe there is a loose nut behind the steering wheel?

    :D :D :D
    Just kidding...

    I haven't ruled it out :p

    good man keeping an open mind...
  • Mikey081057Mikey081057 Posts: 5,525
    A true troubleshooter!

    HT:Polk LSiM 706 LSiM 705's VR3 LSiM 703's LSiM 702's| Marantz AV7702 | Sunfire TGA-7401 | Oppo BDP-103D | Sony PS4 | Directv Genie HD DVR | Samsung 64" Plasma | SVS PB13 Ultra | MIT EXP 2's (Fronts & Center)

    ManCave: Parasound Halo A21 | Parsound Halo A52+ | Marantz AV7004 AV PrePro | Usher Dancer Mini-x DMD's | Usher BE-616 Center | SVS Ultra Surrounds | SVS SB4000 Sub |Oppo UDP 203 | MIT Shotgun S3's | Marantz SA8004 SACD | Music Hall MMF 5.3se TT w/ Soundsmith Carmen | Mytek Brooklyn DAC+ | HP Elite Slice PC | Samsung 50" SUHD TV | Sony PS4 Pro

    Patio Polk Atrium 8's |Marantz 2252B |

    Office Bluesound Node2 | Polk SDA SRS 2.3 | Marantz 2385 |

    Bedroom Peactree Nova 125SE | Focal 905's | Bluesound Node | SVS SB2000 Sub

    Garage Yamaha R-N303BL | Polk Monitor 5B's

    Closet Yamaha M80 | 2 Polk MP2K subs| Yaqin MC100B with Shuguang Treasures KT 88's & CV181Z's | Tesla E83CC's |
  • codycatalistcodycatalist Posts: 1,620
    No one is exempt from the ID10T code. Especially not this guy who looks for the remote that is in his hand.
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
  • codycatalistcodycatalist Posts: 1,620
    I wanted to find something that will run 5-600 watts RMS into 4 ohm to push the sub to it's RMS level. I might just binge on a used Kenwood KAC-7204 bridged which should bring me to where I want to be.

    If the problem remains I have no choice but to rip the whole install out and do it myself...the way I want it to be.
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
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