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The Rally Sports - Dayton Pro Driver 15" 3-way

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  • carlthess40
    replied
    Great work. Sent from my iPhone using Tapatalk

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  • djg
    replied
    Rally Sport | Parts Express Project Gallery

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  • killerkowalczyk
    replied
    Those speakers look amazing, great workmanship! The driver/parts list is not showing up for me to be able to use, could you tell me which woofer, mid, and tweeter/horn you used? Could one of the pre-made 3 way crossovers be used? What is the volume, tuning port diameter and length you used. I want to build something similar. Thank you.

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  • Chad2
    replied
    Awesome build!

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  • mikec
    replied
    Could I build this as a PR version? Because of dust, etc, I need the boxes sealed. Would any major XO changes be needed?

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  • mikec
    replied
    Putting together a build list to see if I can afford to build these (looks very good so far) but your tweeter comes up as "no longer available"!!!

    Do you have a recommendation for a substitute? What xover changes are needed? I don't have equipment to do my own testing so I'm hoping you've got replacement in mind!

    Edit: Folks at PE told me the "Dayton Audio D250T-8 1" Titanium Compression Horn Driver" will work but the bolt-on adapter they listed to go with it is not in stock.
    Last edited by mikec; 06-19-2019, 06:47 PM.

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  • richlandrick
    replied
    Thank you for sharing this design. I'm seriously considering building a smaller version for my home theater L-C-R speakers. I started a new thread about it. Should not be hard to find. The challenge is finding tehright smaller woofer than mate up with subs, but match the efficiency of the mid.

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  • JavadS
    replied
    Originally posted by STIchris722 View Post
    Javad -- Rookie question here, but how do you use the DATs software to measure the actual port frequency of the constructed box? I didn't realize one could do this until you had a little excerpt about it with one (1) of your pictures.
    All you need to do is a full impedance sweep of the driver mounted in the enclosure, the fs of the enclosure is where impedence rises, dips, then rises again, the lowest point in the dip is the Fs. IMO this is critical to designing and building any ported enclosure, and IME modeling programs will only get you close, sometimes as far off as 10hz, that's too much error, and doing it this way allows you to nail the exact frequency you intended to in the modeling.

    Beautiful build by the way. TBO I always treated poplar as "drift wood" ever since I was a kid. It was the wood that we used to fill in corners of cabinets, brace for counter-tops, etc. You have completely changed my outlook on this. Gorgeous boards you have selected for this build and nice craftsmanship.
    Thanks! You know that seems to be the way many do look at it, but the "painted or rainbow" poplar is just one of the most beautiful woods I've ever worked with, it's also a really nice wood to work with as the grain is straight and tight in most cases. Normal yellow poplar is pretty boring, but this stuff with character I've fallen in love with.

    Also love that you used pro-audio drivers! I don't have any technical reasoning or wording to explain why I like them better, but I generally lean towards those of Eminence, Faital, and B&C over the home Hifi stuff. I love a good compression driver in the right wave guide too. Cheers!
    Chris
    You know, I've made it my goal to play with as many different types of drivers as possible to expand my horizons, and pro drives do dynamics, efficiency and transients VERY well, you have to choose your compromises just like with any driver type, but they shine in those areas. I love all the Pro driver builds Iv'e done and will continue to use them as well as HiFi drivers.

    Thanks for the kind words and thoughts Chris!

    Javad

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  • JavadS
    replied
    Originally posted by thekorvers View Post
    Beautiful craftmanship as usual Javad. Kudos!
    Thanks!

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  • STIchris722
    replied
    Javad -- Rookie question here, but how do you use the DATs software to measure the actual port frequency of the constructed box? I didn't realize one could do this until you had a little excerpt about it with one (1) of your pictures.

    Beautiful build by the way. TBO I always treated poplar as "drift wood" ever since I was a kid. It was the wood that we used to fill in corners of cabinets, brace for counter-tops, etc. You have completely changed my outlook on this. Gorgeous boards you have selected for this build and nice craftsmanship.

    Also love that you used pro-audio drivers! I don't have any technical reasoning or wording to explain why I like them better, but I generally lean towards those of Eminence, Faital, and B&C over the home Hifi stuff. I love a good compression driver in the right wave guide too. Cheers!
    Chris

    Leave a comment:


  • thekorvers
    replied
    Beautiful craftmanship as usual Javad. Kudos!

    Leave a comment:


  • JavadS
    replied
    Originally posted by dynamo View Post
    Very cool. I had no idea you had so many YouTube videos. Definitely will be watching those when I get time.
    Yes! Would love it if you checked them out =)

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  • dynamo
    replied
    Very cool. I had no idea you had so many YouTube videos. Definitely will be watching those when I get time.

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  • JavadS
    replied
    The Rally Sports are still out there doing speaker things, they got a good work out on Saturday doing DJ duties for about 6 hours straight at over 110db https://youtu.be/ULb5ePCp9nw

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  • JavadS
    replied
    I uploaded a bunch of videos of the Rally Sports, feel free to check them out at my channel linked below.

    Here is one video linked direct too:



    My Youtube Channel with Speaker Demo Videos

    I recommend listening on some good headphones, nothing like actually hearing them but you get an idea of the dynamics, clarity and fast transients these drivers are capable of.

    Thanks!
    Javad

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