Atlas rises from the ashes of a Shiva

Chewie
Chewie Posts: 80
edited February 2005 in Subwoofer Hookup & Bass Management
After ruining my new Shiva I went with an Atlas 12" driver from AscendantAudiio. Chad was very helpful and provided great all around customer service. The Atlas is about $50 more but well worth the price. It sounds better than the Shiva and is far superior in build quality. You can immediately see where those extra $$ went when you open the box. The Atlas weighs in at 21lbs.while the Shiva is 13lbs. The connection points are high quality. You can either use banana connectors or bare wire that is held in place by the spring-loaded terminal. No soldering required! After some break-in time I tried some "Gladiator" tracks tonight along with some recommended bass testing music. Everything sounds tight and right! I have a HUGE room and it is now being filled quite nicely.

12" Atlas (downfiring)
95L vented box
Rythmik 350 amp
Room is 40'x25'x10'


closeup.php?userid=60636&pic=191_6_big.jpg
Samsung PN60E6500
Denon AVR-E300
Mains: LSI9s
Center: LSIC
Surrounds: LSIFX
Subs: Two Atlas 12's with Rythmik 350W amps in ported 95L box.
Power: Monster 2600 power conditioner
Post edited by Chewie on
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Comments

  • gatemplin
    gatemplin Posts: 1,595
    edited January 2005
    Congrats,

    The Atlas has a little more excursion but a much flatter BL curve. I have heard nothing but good things about this company and I started a thread about them a little while ago.

    http://clubpolk.polkaudio.com/forum/showthread.php?s=&threadid=24805

    Glad it worked out for you. Chad seems like a good guy and I'm glad that everyone seems to be very happy with the Ascendant drivers. I may replace my Tempest with and Atlas or Avanlanche someday.
    Graham
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  • Codey
    Codey Posts: 188
    edited January 2005
    That's a pretty cool enclosure you've built. What's it made out of?

    Outlaw 950
    GFA-555
    GFA-545
    GFA-2535
    RTi8s
    CSi5
    FXi3s
    214L Vented Tempest
    250w BASH amp
    Toshiba HDA1
    Toshiba 44" DLP
    NAD 533 Turntable
    Tripplite HT3100
    Xbox 360
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  • gatemplin
    gatemplin Posts: 1,595
    edited January 2005
    Yeah that enclosure is very unique, me likey.

    191_6_big.jpg
    Graham
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  • Chewie
    Chewie Posts: 80
    edited January 2005
    I used 1" MDF for the box and covered it with black marble contact paper. Solid 3/4" oak for the top and legs that was glued -up as needed. All vertical edges are rounded. Total weight is 134lbs!
    Samsung PN60E6500
    Denon AVR-E300
    Mains: LSI9s
    Center: LSIC
    Surrounds: LSIFX
    Subs: Two Atlas 12's with Rythmik 350W amps in ported 95L box.
    Power: Monster 2600 power conditioner
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  • VR3
    VR3 Posts: 28,654
    edited January 2005
    Time for Adire to catch up!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • bolson
    bolson Posts: 16
    edited January 2005
    I have been looking at doing a DIY sub using an Atlas driver and an Adire designed enclosure. Does the enclosure need to be tweaked for the Atlas driver or are the differences with the Shiva not significant? Since you have heard both, how does the sound quality compare between the two?

    And I am curious how you managed to blow up your Shiva?
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  • Chewie
    Chewie Posts: 80
    edited January 2005
    I used the plans shown on AcousticVisions with the only change being an adjustment for using 1" stock instead of 3/4".


    This was my first sub of any kind so I am not an expert on sound comparison. I can say that the Atlas sounded tighter and didn't bottom like the Shiva did. The Shiva sounded fine but the Atlas is significantly better in overall performance. The quality of materials is certainly much better with the Atlas.

    A few weeks ago I started another thread about my experience with the Shiva. I had followed recommendations and went with the Shiva and other components listed above but later found that this was not appropriate for my room size. The Shiva bottomed enough that the coils were damaged. You could hear a scraping sound when manually pushing the cone. I then saw a post about AscendantAudio's new drivers. Chad was very helpful and said the Atlas would work perfectly in the enclosure I had built.
    Samsung PN60E6500
    Denon AVR-E300
    Mains: LSI9s
    Center: LSIC
    Surrounds: LSIFX
    Subs: Two Atlas 12's with Rythmik 350W amps in ported 95L box.
    Power: Monster 2600 power conditioner
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  • gatemplin
    gatemplin Posts: 1,595
    edited January 2005
    Bolson,

    I think that the TS specs are pretty close but shoot Chad Kuypers an email asking him if the Adire plans will work. The adjustable Qts makes these drivers very versitile as far as box design goes. The Atlas should sound better than the Shiva.
    Graham
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  • VR3
    VR3 Posts: 28,654
    edited January 2005
    http://www.ascendantaudio.com/
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • goingganzo
    goingganzo Posts: 2,793
    edited January 2005
    i am looking to upgrade strykeforce to dual Avanlanche 18
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  • jdhdiggs
    jdhdiggs Posts: 4,305
    edited January 2005
    Yup, I'm starting to look at a dual avalanche 18 in a pseudo IB setup. (Maybe 50X VAS or so)
    There is no genuine justice in any scheme of feeding and coddling the loafer whose only ponderable energies are devoted wholly to reproduction. Nine-tenths of the rights he bellows for are really privileges and he does nothing to deserve them. We not only acquired a vast population of morons, we have inculcated all morons, old or young, with the doctrine that the decent and industrious people of the country are bound to support them for all time.-Menkin
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  • Early B.
    Early B. Posts: 7,900
    edited February 2005
    Will the Atlas 12" work in an SVS PB12-ISD enclosure and amp?
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
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  • goingganzo
    goingganzo Posts: 2,793
    edited February 2005
    it should. but you might want to re port or re tune the port . and maybe get more power.
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  • gatemplin
    gatemplin Posts: 1,595
    edited February 2005
    Originally posted by Early B.
    Will the Atlas 12" work in an SVS PB12-ISD enclosure and amp?

    I gotta disagree with Bryan. The SVS Bash amp has built in EQ for the ISD driver, the response curves will not be the same. I suggest you build one of the recommended enclosures and get a 250-360w amp.
    Graham
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  • Airplay355
    Airplay355 Posts: 4,298
    edited February 2005
    ganzo you are insane....2 18" woofers? :eek:
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  • goingganzo
    goingganzo Posts: 2,793
    edited February 2005
    are you sure they might have a bass bost. but you might get more by selling the svs and bulding a sub sonos are very easy and so are box subs you can even have home depo cut the mdfb for you. my true goal is 120db@12hz
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  • VR3
    VR3 Posts: 28,654
    edited February 2005
    Ganzo...

    you scare me, u know that - and for the record, I am jealous... LOL
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Early B.
    Early B. Posts: 7,900
    edited February 2005
    Will the Atlas 12" work in an SVS PB12-ISD enclosure and amp?
    Spoke with Chad at Ascendant Audio and he said the Atlas 12 will work in this scenario with no problem at all. I ordered one. Should arrive by the end of the week. Will post my results.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
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  • jdhdiggs
    jdhdiggs Posts: 4,305
    edited February 2005
    Originally posted by Early B.
    Will the Atlas 12" work in an SVS PB12-ISD enclosure and amp?

    That sounds like some bad ju-ju there and I'm not sure how much (if anything) you'd gain. I would keep the SVS intact to maintain its value and make a DIY test sub instead.

    Edit: Since you ordered it, good luck, and report back the results!
    There is no genuine justice in any scheme of feeding and coddling the loafer whose only ponderable energies are devoted wholly to reproduction. Nine-tenths of the rights he bellows for are really privileges and he does nothing to deserve them. We not only acquired a vast population of morons, we have inculcated all morons, old or young, with the doctrine that the decent and industrious people of the country are bound to support them for all time.-Menkin
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  • VR3
    VR3 Posts: 28,654
    edited February 2005
    Yes! REPORT back, because my sub is exactly like the PB1/12 ISD or w/e the eff it is...

    And that sub is VERY nice
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Early B.
    Early B. Posts: 7,900
    edited February 2005
    OK, the driver arrived today. I swapped out the SVS driver, plugged it in, and played my reference DVDs. Will post my initial thoughts on the Atlas 12 vs. the SVS woofer in a new thread probably tomorrow. I want to run the sub a few more hours to let the driver break in. Gonna watch AVP tonight. That oughta do it.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
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