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Thread: Aura and Dayton

  1. #1
    Join Date
    Feb 2012
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    Yakima, Wa
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    Default Aura and Dayton

    I am about ready to pull the trigger on some of the Aura NS6 speakers. I think that the Dayton DC28 will go with them. This will go into a 1.8 c/f sealed box with 3 of the NS6 per in a series/parallel configuration. This is a first build, so I might use a PE X-over. Any thoughts, opinions, or advice would be great. Thanks

  2. #2
    Join Date
    Oct 2005
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    Sioux Falls
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    Default Re: Aura and Dayton

    A. I can cut you a heckuva deal on 4 of the NS6 woofers.

    B. Try looking for "Auerbach" (I think). There is an MTM version either in the works or already done.

  3. #3

    Default Re: Aura and Dayton

    Quote Originally Posted by Geniuss_dad View Post
    This is a first build, so I might use a PE X-over.
    expect very random results.....

  4. #4
    Join Date
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    Default Re: Aura and Dayton

    Quote Originally Posted by Geniuss_dad View Post
    I am about ready to pull the trigger on some of the Aura NS6 speakers. I think that the Dayton DC28 will go with them. This will go into a 1.8 c/f sealed box with 3 of the NS6 per in a series/parallel configuration. This is a first build, so I might use a PE X-over. Any thoughts, opinions, or advice would be great. Thanks
    It's next to impossible to wire up a bunch of drivers in a way that your amp will like and where they each develop the same SPL, IF the number of drivers is a prime number. The only good exceptions being a single driver, and a pair of drivers (in series OR parallel - depending on their impedance).

    The only way 3 really works is if you've got 3 low impedance drivers in series (like 2 ohm or 4 ohm), or 3 higher than average drivers in parallel (like 12 or 16 ohms). The NS6 are 8 ohms, aren't they?

    To "series/parallel" (and keep the single driver impedance) you need 4 drivers (which is 2 squared), 9 drivers (3^2), 16 drivers (4^2) . . . see the progression?

    Chris

  5. #5
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    Default Re: Aura and Dayton

    Quote Originally Posted by Chris Roemer View Post
    It's next to impossible to wire up a bunch of drivers in a way that your amp will like and where they each develop the same SPL, IF the number of drivers is a prime number. The only good exceptions being a single driver, and a pair of drivers (in series OR parallel - depending on their impedance).

    The only way 3 really works is if you've got 3 low impedance drivers in series (like 2 ohm or 4 ohm), or 3 higher than average drivers in parallel (like 12 or 16 ohms). The NS6 are 8 ohms, aren't they?

    To "series/parallel" (and keep the single driver impedance) you need 4 drivers (which is 2 squared), 9 drivers (3^2), 16 drivers (4^2) . . . see the progression?

    Chris
    So if I read this correctly, wiring speakers 1 and 2 in series then those to #3 in parallel will not get the 8ohm that I am looking for? Or 1 and 2 in parallel to 3 in series to maybe a 6ohm?

  6. #6
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    Default Re: Aura and Dayton

    Quote Originally Posted by Geniuss_dad View Post
    So if I read this correctly, wiring speakers 1 and 2 in series then those to #3 in parallel will not get the 8ohm that I am looking for? Or 1 and 2 in parallel to 3 in series to maybe a 6ohm?

    Short answer: Nope.


    Longer answer: Actually yes, in terms of overall load, but you'll get either one driver shouldering most of the load, and louder than the other two, or one lagging behind, and lost in the others' wake. This has been discussed in another thread, wish i could remember where and when, though.


    What I'd do in your shoes is look for the AURBAC mtm by Don Radick, build two of those, and build the original AURBAC (he caps it, don't blame me) as surrounds.

    Or keep the extra NS6's as spares....



    Mark
    You go your way, I'll go mine. I don't care if we get there on time.

    ~Pink Floyd

  7. #7
    Join Date
    May 2006
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    Detroit
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    974

    Default Re: Aura and Dayton

    Here's the link for Don's TM using this driver and a small Vifa tweeter: http://techtalk.parts-express.com/sh...d.php?t=224391

    1.8cf would work ok for two of these drivers vented

  8. #8
    Join Date
    Jun 2008
    Location
    Arizona
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    Default Re: Aura and Dayton

    Quote Originally Posted by Geniuss_dad View Post
    So if I read this correctly, wiring speakers 1 and 2 in series then those to #3 in parallel will not get the 8ohm that I am looking for?
    #1 and #2 in series = 16 ohms. This in parallel with #3 = 5.33 ohms

    Or 1 and 2 in parallel to 3 in series to maybe a 6ohm?
    #1 and #2 in parallel = 4 ohms. #3 in series with 6 ohms = 14 ohms. 4 ohms in series with 14 ohms = 18 ohms.

    Suggestion: build the Aurbacs or Stentorians

  9. #9
    Join Date
    Apr 2011
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    Londonderry, NH
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    1,625

    Default Re: Aura and Dayton

    All of the technical help you have gotten here is vastly correct, and great information for you to follow. The more you learn, the less you will know- trust me!!! If your the type of guy that can handle simply borrowing an existing design, it will be much easier and faster for you. Designing from scratch will take about a year without measurement gear and a wealth of knowledge. I was not that type of guy and my designs do not happen nearly as fast as the other more experienced guys here.

    I think you need a positive booster though.... I like the DC28f tweeter. I have used in 3 designs and it does everything well. Nothing breathtaking, but it will make you very satisfied.

  10. #10
    Join Date
    Jun 2006
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    Atlanta, GA, USA, Earth
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    Default Re: Aura and Dayton

    I'm finishing voicing and tweaks on the MTM version of my Aurbacs.
    If you want to do own design, I've got a NIB pair of the DC28 "silkies" that I'll make you a deal on. Otherwise, get 4 of the NS6s from Johnny, get 2 of the Vifa BC2506-04 tweeters, and start on the boxes. 2X NS6 in 1.8 cubes should get a very nice bottom end. See my sig for details on the TM version.

    I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
    "We're down to our last 5 pairs of speakers!" Ms. Ken Lay
    "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

    NS6-255/Vifa BC25SC06 TM design - AURBACS
    NS6-255/Vifa BC25SC06 MTM design - MAURBACS
    High value, high quality RS150/TB28-537SH bookshelf - TARGAS
    SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM

  11. #11
    Join Date
    Feb 2012
    Location
    Yakima, Wa
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    Default Re: Aura and Dayton

    Don, I like those Tm's. I have looked at a lot of different designs. One of the problems that I am finding is a lack of 8 ohm plans. For a first build, I would like to run them off of my receiver. I would use it for 90% HT/10% music. If all goes well and I like it, then I could look into an amp for 4 ohm stuff. Any suggestions?

  12. #12
    Join Date
    Jun 2006
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    Atlanta, GA, USA, Earth
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    Default Re: Aura and Dayton

    Quote Originally Posted by Geniuss_dad View Post
    Don, I like those Tm's. I have looked at a lot of different designs. One of the problems that I am finding is a lack of 8 ohm plans. For a first build, I would like to run them off of my receiver. I would use it for 90% HT/10% music. If all goes well and I like it, then I could look into an amp for 4 ohm stuff. Any suggestions?
    If you are asking if this is an 8 ohm design, well, pretty much. The minimum resistance (Re) of the woofer is 6 ohms, and then you add the resistance of the inductor, so you've got about 6.5 ohms. Any 8 ohm reated HTR will have no problem. You can even build these into 1/2 cube boxes sealed for surrounds. The MTM version, though is definitely a 4 ohm design, which is pretty true for most center channels.

    Not sure if you asking for recos for 4 ohm HTRs. Big subject around here. Search the recent threads and you'll find a couple.

    I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
    "We're down to our last 5 pairs of speakers!" Ms. Ken Lay
    "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

    NS6-255/Vifa BC25SC06 TM design - AURBACS
    NS6-255/Vifa BC25SC06 MTM design - MAURBACS
    High value, high quality RS150/TB28-537SH bookshelf - TARGAS
    SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM

  13. #13
    Join Date
    Oct 2005
    Location
    Sioux Falls
    Posts
    11,808

    Default Re: Aura and Dayton

    Well, my quad of drivers is gone, sorry.

    I was doing 20-200 hz sine sweeps at 90 db for ten minutes with a 10" subwoofer the other day before my Onkyo 603 pitched a fit. The driver has an Re of 3.2. I think a typical 4 ohm MTM would not present a problem to most receivers.

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