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    New build going poorly...need advice

    So after being out of the game awhile I decided to dust off my old equipment...my 3 subs gave it up as soon as I tried to power them up...anyway I ordered 2 fu300's that just came in today...so I have a Kenwood kdc 155u hu, old school california 600 amp and the 2 12's...when I hooked it all up today it sounded ok for about 15 mins...after that the amp overheated and began cutting in and out...now I can't figure out why power's up ok sounds great till it gets hot...any ideas?







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    Re: New build going poorly...need advice

    You are probably running the amp at a lower impedance than what it's rated for. Is this your amp? https://www.crutchfield.com/S-djuuWN...ia-600MSX.html
    or this one? https://www.crutchfield.com/S-uTCkSQ...ia-CA600M.html




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    Re: New build going poorly...need advice

    Quote Originally Posted by Tommy108 View Post
    So after being out of the game awhile I decided to dust off my old equipment...my 3 subs gave it up as soon as I tried to power them up...anyway I ordered 2 fu300's that just came in today...so I have a Kenwood kdc 155u hu, old school california 600 amp and the 2 12's...when I hooked it all up today it sounded ok for about 15 mins...after that the amp overheated and began cutting in and out...now I can't figure out why power's up ok sounds great till it gets hot...any ideas?
    are the subs d2 or d4



    KENWOOD X301 HU, PRECISION POWER Phantom 1000, FU 750 12, 2.1cfad ported, soundqubed 6.5" coax/doors, hp & lp xover on hu, AGM starting batt...
    Quote Originally Posted by Boomin_tahoe View Post
    2 ohms rule
    Quote Originally Posted by Popwarhomie View Post
    Shit Ill sleep with you if you do that for me..

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    Re: New build going poorly...need advice

    clipping or too low impedance



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    Re: New build going poorly...need advice

    Quote Originally Posted by THATpurpleKUSH View Post
    You are probably running the amp at a lower impedance than what it's rated for. Is this your amp? https://www.crutchfield.com/S-djuuWN...ia-600MSX.html
    or this one? https://www.crutchfield.com/S-uTCkSQ...ia-CA600M.html
    Yep thats it...impedance should've been ok read 3.something on my multi-meter...as far as I know this amp is stable from 2ohm up




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    Re: New build going poorly...need advice

    Quote Originally Posted by boomingrandpa View Post
    are the subs d2 or d4
    d4




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    Re: New build going poorly...need advice

    Quote Originally Posted by Tommy108 View Post
    d4
    are u sure u wired each to 8 ohm and bridged amp at 4 ohm? if u wired to 2 ohm each and bridged thats a problem.. i suggest u get a 800-1k mono amp with ss filter.. are you using ported box?, if so u need ss filter..



    KENWOOD X301 HU, PRECISION POWER Phantom 1000, FU 750 12, 2.1cfad ported, soundqubed 6.5" coax/doors, hp & lp xover on hu, AGM starting batt...
    Quote Originally Posted by Boomin_tahoe View Post
    2 ohms rule
    Quote Originally Posted by Popwarhomie View Post
    Shit Ill sleep with you if you do that for me..

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    Re: New build going poorly...need advice

    Quote Originally Posted by wew lad View Post
    clipping or too low impedance
    I was pushing it hard at first...butt turned gain way down and tried lower volume levels still had the issue...of course it was already pretty hot...what impedance should i wire it to?




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    Re: New build going poorly...need advice

    Quote Originally Posted by BOOMINGRANDPA View Post
    are u sure u wired each to 8 ohm and bridged amp at 4 ohm? if u wired to 2 ohm each and bridged thats a problem.. i suggest u get a 800-1k mono amp with ss filter.. are you using ported box?, if so u need ss filter..
    Yeah checked it with multi meter...yes it's a ported box...however this is a mini amp it wasn't bridged




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    Re: New build going poorly...need advice

    Lol mono amp...stupid spell check




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    Re: New build going poorly...need advice

    Quote Originally Posted by Tommy108 View Post
    Lol mono amp...stupid spell check
    lol sorry i thought it was 2 channel saw 100's of those blue amps yrs ago.. if u wired each sub at 2 ohm u are at 1 ohm load i feel sure that amp won't like that.. probably shoulda got the d2's.. so we are back to what i said get a mono amp that's 1 ohm stable., something like soundqubed s1 850 would be good on those and u would have ss filter..



    KENWOOD X301 HU, PRECISION POWER Phantom 1000, FU 750 12, 2.1cfad ported, soundqubed 6.5" coax/doors, hp & lp xover on hu, AGM starting batt...
    Quote Originally Posted by Boomin_tahoe View Post
    2 ohms rule
    Quote Originally Posted by Popwarhomie View Post
    Shit Ill sleep with you if you do that for me..

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    Re: New build going poorly...need advice

    Quote Originally Posted by BOOMINGRANDPA View Post
    lol sorry i thought it was 2 channel saw 100's of those blue amps yrs ago.. if u wired each sub at 2 ohm u are at 1 ohm load i feel sure that amp won't like that.. probably shoulda got the d2's.. so we are back to what i said get a mono amp that's 1 ohm stable., something like soundqubed s1 850 would be good on those and u would have ss filter..
    Actually if I like them I was thinking of running 3 of them...however I would really like to get the 2 going first to see how I like fu's




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    Re: New build going poorly...need advice

    Sorry kush I misread your post...mine is the first one the blue one




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    Re: New build going poorly...need advice

    iirc, that amp isnt stable at 1 ohm



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    Re: New build going poorly...need advice

    Majority of the older amps aren't 1 ohm stable.



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