Tumult 15" or 2 Stryke AV 15" ? (response curves)

Discussion in 'Archived Threads 2001-2004' started by Seth_L, Sep 18, 2002.

  1. Seth_L

    Seth_L Screenwriter

    Joined:
    Apr 5, 2002
    Messages:
    1,553
    Likes Received:
    1
    Trophy Points:
    0
    First I was all set on a BP 1503, and then changed my mind to the Tumult, but now that I've modeled what two Stryke AV 15" drivers will do I'm wondering if I should change my mind again.
    I'm looking at 200L enclosures with 4 Adire PR15s. Now, my question is which one of these designs is better. They're a bit different from each other. The Stryke setup will clearly play louder at higher frequencies, but rolls off sooner though not as severe. The Tumult holds it's response at a lower volume to very low frequencies, but drops like a rock. I would think that the Stryke setup would do better in most rooms where there is at least some modest gain that low and the Tumult would do better in rooms where there flat out is no room gain. Since most rooms have some gain (at least enough to flatten the Stryke design to 20Hz) I presume I would be better off building it rather than the Tumult.
    Here are the two response curves from Unibox 4.02.
    [​IMG]
    [​IMG]
    Any comments or suggestions are welcome.
    Seth
     
  2. Michael R Price

    Michael R Price Screenwriter

    Joined:
    Jul 22, 2001
    Messages:
    1,591
    Likes Received:
    0
    Trophy Points:
    0
    I think that dual AV15s would outperform a Tumult based on the preliminary information, however that would take up a lot more space and wouldn't go quite as deep. You'll want a lower tuning for the Tumult, in the 14-16Hz range if possible. Either way, it would kick ass.
     
  3. Seth_L

    Seth_L Screenwriter

    Joined:
    Apr 5, 2002
    Messages:
    1,553
    Likes Received:
    1
    Trophy Points:
    0
     
  4. Kyle Richardson

    Kyle Richardson Screenwriter

    Joined:
    Jan 1, 1998
    Messages:
    1,073
    Likes Received:
    0
    Trophy Points:
    0
    It appears from your graphs that I would raise Fb for the AV15 a bit and drop it a bit for the Tumult. That will put the graphs even closer and confuse you even more [​IMG]
     
  5. Seth_L

    Seth_L Screenwriter

    Joined:
    Apr 5, 2002
    Messages:
    1,553
    Likes Received:
    1
    Trophy Points:
    0
     
  6. Seth_L

    Seth_L Screenwriter

    Joined:
    Apr 5, 2002
    Messages:
    1,553
    Likes Received:
    1
    Trophy Points:
    0
     
  7. Dustin B

    Dustin B Producer

    Joined:
    Mar 10, 2001
    Messages:
    3,126
    Likes Received:
    0
    Trophy Points:
    0
    Isn't that hump at the end of the Tumult graph indicative of an enclosure that is too large for the driver?
     
  8. Thy Luc

    Thy Luc Agent

    Joined:
    Sep 5, 2002
    Messages:
    46
    Likes Received:
    0
    Trophy Points:
    0
    re: Tumult

    When is this driver going to be released?
    People making plans on vaporware - lol
     
  9. Dustin B

    Dustin B Producer

    Joined:
    Mar 10, 2001
    Messages:
    3,126
    Likes Received:
    0
    Trophy Points:
    0
    Thy, I think you just solidified yourself as a troll here.

    Dan has an excellent track record. We will see the driver in the not to distant future. If everything goes well a week or two, if not could be a little while. But barring a catastrophy we will see it sooner rather than later.
     
  10. Seth_L

    Seth_L Screenwriter

    Joined:
    Apr 5, 2002
    Messages:
    1,553
    Likes Received:
    1
    Trophy Points:
    0
     
  11. Craig Woodhall

    Craig Woodhall Supporting Actor

    Joined:
    Jul 11, 1999
    Messages:
    590
    Likes Received:
    0
    Trophy Points:
    0
    Yes, Dustin everytime I see a post by Thy, i skip right passed it.. [​IMG]
     
  12.  
  13. Michael R Price

    Michael R Price Screenwriter

    Joined:
    Jul 22, 2001
    Messages:
    1,591
    Likes Received:
    0
    Trophy Points:
    0
    Extra output can be EQed away, and it translates into lower distortion and more headroom.

    I was thinking you would have one AV15 in each enclosure. 100L per driver seems somewhat small and is the reason for your overdamped response.

    Either way the Tumult wins for the real low stuff and the AV15s are better higher up (with your current box plans). They also have higher displacement, so there's ultimately higher output capability above ~20Hz than the Tumult - however, whether you would get to use could be another story. I'm not sure which option I should be recommending to you now.
     
  14. Thy Luc

    Thy Luc Agent

    Joined:
    Sep 5, 2002
    Messages:
    46
    Likes Received:
    0
    Trophy Points:
    0
    I hope yer right, I have plans for that new
    sub.
     
  15. Brian Bunge

    Brian Bunge Producer

    Joined:
    Sep 11, 2000
    Messages:
    3,716
    Likes Received:
    0
    Trophy Points:
    0
    I seem to be of the Jack Gilvey school of thought that says design for max flat anechoic response and EQ away the peaks. So I'd personally go with the Tumult.

    Brian
     
  16. So..when was jack ever right about anything [​IMG]
     
  17. Jack Gilvey

    Jack Gilvey Producer

    Joined:
    Mar 13, 1999
    Messages:
    4,948
    Likes Received:
    1
    Trophy Points:
    0
  18. Brian Bunge

    Brian Bunge Producer

    Joined:
    Sep 11, 2000
    Messages:
    3,716
    Likes Received:
    0
    Trophy Points:
    0
    Tony,
    Maybe he don't know "Jack"! [​IMG]
     
  19. Dan Wesnor

    Dan Wesnor Second Unit

    Joined:
    Apr 28, 1999
    Messages:
    389
    Likes Received:
    0
    Trophy Points:
    0
    The second graph in the first post will sound best of all that have been posted. It's the only one that works with the room to produce flat response. All the others will produce a large hump below 30Hz.
     
  20. Shawn Solar

    Shawn Solar Supporting Actor

    Joined:
    May 12, 2001
    Messages:
    763
    Likes Received:
    0
    Trophy Points:
    0
    By pushing the the tuning on the tumult to the 13-14hz range I think you would push the rise in group delay out of the passband which would also 'clean up' the sound down low. If it were all audible. It also looks(if I read it right) that in the 310l enclosure you are right at excursion at 20hz. Though at near 120db levels not sure if you'll ever get that loud and I'm sure the driver can take it.
     

Share This Page