Hello! New Here....

95Honda
95Honda Posts: 77
edited August 2005 in Car Subwoofer Talk
Well, I thought I would start off one of my new posts whith one of my latest projects. I just finished a box for my Bronco. It is a 7ft3 vented alignment with 8 RE 8" subwoofers. Cabinet walls are all 1 1/4" MDF and heavily braced. The tuning is selectible depending on how many ports are plugged, 30-40-50Hz. With all ports unplugged it managed 143db on the dash with my Termlab meter with 154 watts.... I built it just to see what I could do with a highly efficent alignment.

Thanks in advance for any comments!
www.forceaudio.com .... We cut through the BS.
Post edited by 95Honda on
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Comments

  • MacLeod
    MacLeod Posts: 14,358
    edited August 2005
    Welcome to the forum bro.

    That is a very impressive box. Looks professionally made. Well done.

    143 db with 150 watts is insane! I couldnt imagine what that would hit with some major power.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • VR3
    VR3 Posts: 28,640
    edited August 2005
    Very impressive...

    I like that you used multiple small drivers... I bet it is very accurate as well as loud...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • 95Honda
    95Honda Posts: 77
    edited August 2005
    Sounds pretty good at the 30Hz tune... Nice and tight...
    www.forceaudio.com .... We cut through the BS.
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  • disneyjoe7
    disneyjoe7 Posts: 11,435
    edited August 2005
    Vr3MxStyler2k3 wrote:
    Very impressive...

    I like that you used multiple small drivers... I bet it is very accurate as well as loud...

    +1 :)

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  • 1996blackmax
    1996blackmax Posts: 2,436
    edited August 2005
    Welcome, and nice setup.
    Alpine: CDA-7949
    Alpine: PXA-H600
    Alpine: CHA-S624, KCA-420i, KCA-410C
    Rainbow: CS 265 Profi Phase Plug / SL 165
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  • Toxis
    Toxis Posts: 5,116
    edited August 2005
    nice setup... now put some muscle behind it. ;)
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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  • LiquidSound
    LiquidSound Posts: 1,261
    edited August 2005
    Sweet Jesus! Are you ok? Bleeding anywhere? :D
    Two Channel Main
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    Sub - Spiked Velodyne Cht-8 On Spiked Landscaping Stones

    "If you could put speakers in a needle, I'd never see him again..." - My Girlfriend
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  • 95Honda
    95Honda Posts: 77
    edited August 2005
    I have thought about giving it more power. The subs move only about 1/4" at full output right now with 19 watts per woofer. I have used these before in about the same aligment with just two subs. They would take about 150 watts each when they would run into thier mechanical limits. So I think 1200-1500 watts would be good, I could probably do about 3KW as long as it was short and right at the 50Hz tune. I am pretty sure I could snake a number right at or a little below 150db. Also bear in mind that I have done all these measurements with a Termlab. It hits a 146 right now on an Audio Control at my buddies local Car Stereo shop..... But that is an Audio Control mic, not super consistent if you know what I mean.....
    www.forceaudio.com .... We cut through the BS.
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  • 95Honda
    95Honda Posts: 77
    edited August 2005
    I have gone brute force before.... I built this wall for a Dodge Durango last year. 6 Tempest 15" subs and 2KW in a 25ft3 wall. Did 153 on the dash with the Termlab....
    www.forceaudio.com .... We cut through the BS.
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  • neomagus00
    neomagus00 Posts: 3,899
    edited August 2005
    i don't get it... can you sit in the car and actually listen to that?
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • Ricardo
    Ricardo Posts: 10,636
    edited August 2005
    95Honda wrote:
    I have gone brute force before.... I built this wall for a Dodge Durango last year. 6 Tempest 15" subs and 2KW in a 25ft3 wall. Did 153 on the dash with the Termlab....


    I have one word for that: INSANE :D:D:D
    _________________________________________________
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  • PolkThug
    PolkThug Posts: 7,532
    edited August 2005
    Looks like some fun projects. At what Hz do you achieve those amplitudes?
    Never Forget
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  • Toxis
    Toxis Posts: 5,116
    edited August 2005
    95Honda wrote:
    I have gone brute force before.... I built this wall for a Dodge Durango last year. 6 Tempest 15" subs and 2KW in a 25ft3 wall. Did 153 on the dash with the Termlab....
    Did 154 on the dash of a 97 probe with 2 Alpine Type R 12's and an old Alpine 1507. Hmmm... you have MUCH more cone area and twice the power. Nice setup though.
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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  • 95Honda
    95Honda Posts: 77
    edited August 2005
    Toxis wrote:
    Did 154 on the dash of a 97 probe with 2 Alpine Type R 12's and an old Alpine 1507. Hmmm... you have MUCH more cone area and twice the power. Nice setup though.

    What meter? One of my buddies holds MECCA's world championship title, he does a flat out 154 with 4 Tempest 15's and 1000 watts... In a 20 cube wall... 154 on the Termlab is vicous, It hurts.....

    Meter means everything..... Audio Control said almost 160 in the same spot with the Durango....

    Burp is 54Hz I think, I'll attach an image of the Termlab score... It says 152.8, but she did a 152.9-153 later that day. It was at Adire, two years ago at one of thier open houses....
    www.forceaudio.com .... We cut through the BS.
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  • Toxis
    Toxis Posts: 5,116
    edited August 2005
    I can't remember what meter it was now but he still was doing 149-150's at USAC finals with a voltage issue. Guess it's all about the box.
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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  • VR3
    VR3 Posts: 28,640
    edited August 2005
    Well...

    Considering 6 drivers would only yield a... 7-8db increase over 1 driver... I don't see the real purpose behind having multiple drivers... ;)

    It looks cool though, thats for sure...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • 95Honda
    95Honda Posts: 77
    edited August 2005
    Toxis wrote:
    I can't remember what meter it was now but he still was doing 149-150's at USAC finals with a voltage issue. Guess it's all about the box.


    Well, yes, but remember you gotta know what meter..... If it was done on an A/C mic, then it doesn't really mean much because they vary so much....

    Look up scores and titles for anyone who uses the Termlab (Mecca, dbdrags, etc) and you will see what I mean....

    150 is still pretty loud, though! :)
    www.forceaudio.com .... We cut through the BS.
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  • audiobliss
    audiobliss Posts: 12,518
    edited August 2005
    Man! Sweet looking box! Nice, clean, and professional looking! Impressive numbers, too! Not that I'd ever want anything to be that lould (except maybe a car alarm...hmm....now that could be a good idea...), but as long as it's tight and accurate too, that's awesome!

    Oh, and welcome to the forum!!
    George Grand wrote: »
    Jstas wrote: »
    Simple question. If you had a cool million bucks, what would you do with it?
    Wonder WTF happened to the rest of my money.
    In Use
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2005
    Hey!!

    You are **** insane. Please stick around :)
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  • neomagus00
    neomagus00 Posts: 3,899
    edited August 2005
    Vr3MxStyler2k3 wrote:
    Well...

    Considering 6 drivers would only yield a... 7-8db increase over 1 driver... I don't see the real purpose behind having multiple drivers... ;)

    It looks cool though, thats for sure...
    you didn't really mean this, did you? you can play 1 sub at max excursion for 145 dB, or you can play 6 at 1/4 excursion for 150 dB, you tell me which will sound better...
    It's not good, very fundamentally simply not good. - geolemon

    "Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs
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  • audiobliss
    audiobliss Posts: 12,518
    edited August 2005
    Ya see that smiley face? I'm pretty sure he didn't.
    George Grand wrote: »
    Jstas wrote: »
    Simple question. If you had a cool million bucks, what would you do with it?
    Wonder WTF happened to the rest of my money.
    In Use
    PS3, Yamaha CDR-HD1300, Plex, Amazon Fire TV Gen 2
    Pioneer Elite VSX-52, Parasound HCA-1000A
    Klipsch RF-82ii, RC-62ii, RS-42ii, RW-10d
    Epson 8700UB
    In Storage
    [Home Audio]
    Rotel RCD-02, Yamaha KX-W900U, Sony ST-S500ES, Denon DP-7F
    Pro-Ject Phono Box MKII, Parasound P/HP-850, ASL Wave 20 monoblocks
    Klipsch RF-35, RB-51ii
    [Car Audio]
    Pioneer Premier DEH-P860MP, Memphis 16-MCA3004, Boston Acoustic RC520
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  • Toxis
    Toxis Posts: 5,116
    edited August 2005
    Theoretically speaking, doubling the number of drivers will give you about 3db gain. So doubling that again, and now you've bumped it 3 more db. Seeing it's not quite doubling again, you're probably going to gain about 1-2db. That's how he came upon this number and yes, he's not far off. Now what he did NOT take into account was the fact of power. Adding more drivers most likely gained a lot of extra power from the amp which in turn gives you more output.
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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