The Truth About Polk Momo C400.4 ?

OSSA
OSSA Posts: 13
edited September 2007 in Car Audio & Electronics
Hi,
I want to buy a C400.4 to power a pair of mmc690 and 1 polkmm2104.
i've been reading that they are "rated" at 75x4. tis a modest rating they say and i've come to the conclusion that they range between 90x4/100x4 depending on how lucky you are. i was wondering, how much RMS is ACTUALLY being put out when its Bridged to run a sub?

V/r
Me
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  • ilikesound
    ilikesound Posts: 355
    edited September 2007
    welcome to the forums. my c400.4 puts out 98wpc, so if i bridge it will run 196w. you usually just double the watts if you bridge, give or take a couple, it usually falls within there.

    those amps usually come somewhere in between 80-95wpc anyhow, so i think you will be ok. just if you want extreme bass, always better to get another amp.
    At Home:
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    Away From Home:
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    i dont understand how amps are rated then, cause the "rating" is 75x4 @ 4 ohms and 200watts RMS Bridged at 4 ohms.
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  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    They make em so good at Polk that they always have alittle more than they rate them..!!

    My 400.4 is the same way

    get a 300.2 for your subs and your golden !

    or a 500.1 like I have ..
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    i can only afford 1 amp right now and i've chosen this one. i'm just wondering how much the acutall RMS might turn out to be on it when its bridged
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  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    what speaks are you using ?
    why do you want to bridge this particular amp ?


    nevermind...duh !
    I re read your initial post..!


    it should work fine, it`s just that your sub is a Dual Voice coil and may draw alot from that amp..!!
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited September 2007
    Probably just under 240 watts RMS to a little under 270 dependending on the birthsheet. The difference in watts would not really be something that you could hear though.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    THat is a great amp !!

    IMHO, of course

    Bmax...got any pic`s of your install ?
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    well i got a pair of mmc690 for 99 bucks on car domain if i bought the momo 2104 sub for regualr price and i found this amp on sale for 250 bucks on the same sight so i stepped all over that it said it was rated at 75x4 and 200 RMS bridged on every sight i went to. but every site also said conservative rating on RMS and most people said they got about 90x4 on theres so automatically i assume that the RMS is going to go up farther than 200 watts bridged i was just wondering if anyone knew the actuall number that it could be?
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  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    1996blackmax wrote: »
    Probably just under 240 watts RMS to a little under 270 dependending on the birthsheet. The difference in watts would not really be something that you could hear though.



    :D

    what he said !!
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited September 2007
    beardog03 wrote: »
    THat is a great amp !!

    IMHO, of course

    Bmax...got any pic`s of your install ?


    Not one with the Audison amps. When I get the car back from the shop I will take some shots....
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    i just wanted to get my speakers kina close to there recomended max RMS . i dont want to go deaf i just wanna have nice full polk sound. thanks Bmax for making me feel like i can cross the 75% mark for RMS on all my momo gear.
    and its not DVC sub its just single.
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  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    oops my bad !!

    I think you will be right were you should be with those speaks and that amp..

    Single or dual, you should get what your looking for ...

    If not, sell the 400 and get two 300`s ...:p
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    rgr that
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    thanks for the info everybody
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited September 2007
    Let us know how it goes once you get it installed.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
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  • OSSA
    OSSA Posts: 13
    edited September 2007
    i will but its going to be a little while i'm USNR and Deployed i was just looking around and found a deal at car domain on Polk speakers and the amp so i couldnt pass it up i got 1 10" momo2104 a pair of momo mmc690 and the c400.1 for 450 bucks and there's no way i could pass that up.
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  • eloplayspolo
    eloplayspolo Posts: 1,117
    edited September 2007
    good work.
    2013 Toyota Prius
    Audible Physics 3 Way: H6MB, AR3-A, AR2.0
    Image Dynamics iDMax 12" D2v4
    (2) Alpine PDX-V9 Bridged, Alpine PDX-M12 (500w Mid-Bass, 200w Mid, 200w Tweet, 1200w Sub)
    Mosconi 6to8 v8
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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited September 2007
    That's a very sweet deal.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
    ARC Audio: 4150-XXK / 1500v1-XXK
    JL Audio: 10W6v2 (x2)
    KnuKonceptz
    Second Skin
    · Share on FacebookShare on Twitter
  • beardog03
    beardog03 Posts: 5,550
    edited September 2007
    Very nice !

    I have that same set up , with a pair of 5 1/4 momo`s for my car..

    I just haven`t gotten around to actually hooking it up..

    I also have (2) 300.2`s and a (1) 500.1


    one day....I keep saying that !!
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)

    :cool:
    · Share on FacebookShare on Twitter
  • OSSA
    OSSA Posts: 13
    edited September 2007
    yeah i wanted to get the momo525 but i couldnt afford them and another amp cause i didnt want to push momos off a head unit, from what i've read i figured that would be kind of mean to them. so i went with the db525 and am going to push those off of a Pioneer DEH-P4900iB i figured it wouldnt be too bad and if it was i would just turn up the 690s and be ok with it.lol someday i will have two amps and momos for the front doors...someday
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