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    Xprime4's Avatar
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    Got some specs but don't know what to do

    subs will be a pair of 12" Tc sounds made tc-9. All the specs/infos i have on these are here: http://www.subguts.com/TC_TC_9.html

    Key Features

    140 Newtons2/watt Motor Force
    800 Watts Continuous Power
    3" Anodized Copper Voice Coil
    Single Dish Aluminum Cone
    1" NBR Surround
    145 Ounce Magnet Structure
    18mm XMax
    8.0" Diameter Suspension System
    Cast Aluminum Frame

    12" TC-9

    Qts 0.354
    Qes 0.384
    Qms 4.46
    Fs 27hz
    Res 5.96Ω
    Ls 4.35mH
    Lp 8.26mH
    Rp 10.88Ω
    Dia 250mm
    Vas 35.3l
    mms 331g
    cms 104um/N
    bl 29.2T*m
    Spl 84.7dB

    Since Tc sounds is out, i tried contacting audiopulse technical service but i just learned that audipulse was out too.... That won't help me at all


    I want to do a 30-32hz ported box but i have no idea on what volume to do it. I've seen suggestion between 1ft/cu per sub up to 2.5ft/cu sub. I have some trunk space and don't really care about it. So i just want the subs to perform the best sq wise/spl wise. I'm more 70sq/30spl.

    I don't understand the modeling program and i don't know if they are reliable. Can I get the optimal box specs for these with the infos i have.

    Otherwise, i can't contact Tl/audiopulse/whatever it will be next?

    It will be powered by a bxi2006d at 1ohm, so 800-900 watt +/- per sub.

    thanks

    edit: i did a lot of research before buying these.. but no official info on box reccomandation
    Last edited by Xprime4; 07-14-2009 at 12:34 PM. Reason: spelling







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    Re: Got some specs but don't know what to do

    5 easy bucks will be the reward




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    Re: Got some specs but don't know what to do

    I was recommanded 2 to 2.25 ft/cu per sub. I would do 32hz tuning with around 12sq/ft of port area

    how does that sound? too big?




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    mcsoul's Avatar
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    Re: Got some specs but don't know what to do

    Quote Originally Posted by Xprime4 View Post
    I was recommanded 2 to 2.25 ft/cu per sub. I would do 32hz tuning with around 12sq/ft of port area

    how does that sound? too big?
    144 square inches for 4.5 cubic feet does not sound right.

    70-80 square inches would be reasonable, unless there is some tc-9 properties I'm unaware of.

    Something like this from the free box sticky would work, it's a little light on the port area. It could be modified.




    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

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    Re: Got some specs but don't know what to do

    Quote Originally Posted by mcsoul View Post
    144 square inches for 4.5 cubic feet does not sound right.

    70-80 square inches would be reasonable, unless there is some tc-9 properties I'm unaware of.

    Something like this from the free box sticky would work, it's a little light on the port area. It could be modified.

    where does the 144 come from lol from my testing so far, i love the sound of smaller port area. that's why i want to stick to around 12sq/ft.

    my biggest worries is really the airspace the sub need to perform the flattest




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    Re: Got some specs but don't know what to do

    Oh I see. That box I posted will work good then.

    It does have a 4db peak at 34hz which starts at 50hz and goes flat at 30hz.
    It looks pretty nice to me.

    Unfortunately, group delay is off the charts at 30hz, but at that frequency it may
    not make a big difference.



    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

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    Re: Got some specs but don't know what to do

    Quote Originally Posted by mcsoul View Post
    Oh I see. That box I posted will work good then.

    It does have a 4db peak at 34hz which starts at 50hz and goes flat at 30hz.
    It looks pretty nice to me.

    Unfortunately, group delay is off the charts at 30hz, but at that frequency it may
    not make a big difference.
    can you export the graph? i'm not quite sure i understand what you just gave me

    what i understand : 4db gain in the mid thirty that keep on till 50hz? the rest is flat? I saw group delay few times today, what does it mean?




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    Re: Got some specs but don't know what to do

    The graph is not bad, although it's not a typical sq graph.



    group delay would sometimes be described as muddy bass. it is the difference
    in milliseconds between the time the sound wave off the cone reaches your ear
    vs the wave out of the port (as I understand it). The lower the frequency the less
    it matters.



    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

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    Re: Got some specs but don't know what to do

    Quote Originally Posted by mcsoul View Post
    The graph is not bad, although it's not a typical sq graph.



    group delay would sometimes be described as muddy bass. it is the difference
    in milliseconds between the time the sound wave off the cone reaches your ear
    vs the wave out of the port (as I understand it). The lower the frequency the less
    it matters.
    what if i want a "typical sq graph"

    Would building a little smaller box or more/less port area help alot? I want it the most sq oriented ... but i don't need it to be flat in the subsonics freq. Let says the flatest from 30-32hz

    also give me your paypal, your help gotta be rewarded




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    Re: Got some specs but don't know what to do

    Port area will not help, box size and tuning will; but I'd go with recommended in this case.
    That peak is pretty low in the freq range. I think these speakers are made to slam and sound
    pretty good doing it, that it what the graph indicates to me.

    Also, I'm no pro, so I don't charge.



    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

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    Re: Got some specs but don't know what to do

    Quote Originally Posted by mcsoul View Post
    Port area will not help, box size and tuning will; but I'd go with recommended in this case.
    That peak is pretty low in the freq range. I think these speakers are made to slam and sound
    pretty good doing it, that it what the graph indicates to me.
    There is no "recommanded" from tc or ap ... and since they're out... i probably won't have any feedback from those guys

    Can you just try with a smaller enclosure size.. like 2ft/cu per sub. Just to see how the line would react

    thanks for everything, your a pro and a gentleman




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    Re: Got some specs but don't know what to do

    Quote Originally Posted by Xprime4 View Post
    There is no "recommanded" from tc or ap ... and since they're out... i probably won't have any feedback from those guys

    Can you just try with a smaller enclosure size.. like 2ft/cu per sub. Just to see how the line would react

    thanks for everything, your a pro and a gentleman
    I could do that and I already have. The only problem is that I do not know TC sounds gotchas. I mean a flat box for 2 woofers is 1.6 cubes at 30hz, the port would displace more than the box lol. I could not in good conscience help build that box unless I was sure it was the right thing to do. The 4.4 at 30-32hz may not be sq, but at least I'm pretty darn sure it will impress .

    I think you need to find folks with tx-9 experience. Maybe dragnix would help.

    Edit: 2 cubes per does not do much to flatten it compared to 2.2 cubes per sub.

    And, your welcome, no problem.
    Last edited by mcsoul; 07-14-2009 at 08:20 PM.



    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

  13. #13
    mcsoul's Avatar
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    Re: Got some specs but don't know what to do

    http://www.caraudio.com/forum/showth...&highlight=tc9

    oops lol

    For 2 subs, somewhere between 3@32hz and 4.6@23hz was recommended

    I'm kinda liking 4 at 27, the middle one in light blue.
    red is 3@32hz, green is 4.6@23hz; all on 2000w



    Here's 4@27hz

    Last edited by mcsoul; 07-14-2009 at 10:04 PM.



    ________________________
    Car: 2004 Nissan Altima 3.5 manual
    Head unit: Alpine CDA-9815 (running active)
    Midbass: Morel HU-621 Hybrid Uniflow 8 ohms
    Mid Amp: Audison lrx 4.300 bridged 2x140w @ 8 ohms
    Doors: 24ft Damplifier Pro, Second Skin D-flex pads, eggcrate foam, sealed up.
    Tweeter: SEAS 27TFFNC
    High Amp: Audison Lrx-2.150
    Subs: Two RE SE 12 d4's
    Box: 4 cubes net at 30hz
    Sub Amp: Sound Stream Van Gough 1600.2
    Electrical: Knu Flex 1/0, Batcap 2000 in back
    Rear Deck: No 6x9's just holes and grills

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    Xprime4's Avatar
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    Re: Got some specs but don't know what to do

    Quote Originally Posted by mcsoul View Post
    http://www.caraudio.com/forum/showth...&highlight=tc9

    oops lol

    For 2 subs, somewhere between 3@32hz and 4.6@23hz was recommended

    I'm kinda liking 4 at 27, the middle one in light blue.
    red is 3@32hz, green is 4.6@23hz; all on 2000w



    Here's 4@27hz

    I couldn't have asked for more

    thanks a lot

    It will be an hard decision. Blue line seems like a nice curve, but 27hz sounds pretty low. I hope it won't kill the output over 50hz too much




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    Re: Got some specs but don't know what to do

    I'll do 4ft at 28hz ( lol just a tad ove 27hz)

    Still got one question for you Mister Mcsoul

    I'll be using re l ported calculator for the volume and port dimension. I heard it's off 1-2hz in the tuning and maybe a little airspace wise. Any better enclosure calculator on the web?

    I would have used the pre-made box, but i'll optimize my trunk space and when the time will come soon... i'll still have some space for the stroller
    Last edited by Xprime4; 07-15-2009 at 09:54 AM.




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