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Introducing: The Pit Vipers (Ooh Yeah!!!)

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  • Serenitynow
    replied
    Thanks djg.
    I guess I'll go with this and the 5.0 mH air core inductor then.
    It should work out fine then correct ?

    Leave a comment:


  • djg
    commented on 's reply
    Yes. NPEs are a cost saving measure. All of the NPEs can be poly caps if you wish. Large poly caps get expensive.

  • Serenitynow
    replied
    Click image for larger version

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    Can this be used for C3 in the crossover instead of the Electrolytic Non-Polarized Cap ?

    Leave a comment:


  • 9sheng
    replied
    @Paul Carmody I would like to confirm, how thick are the cabinet boards you are using?
    I feel like 18mm will look thin.
    The second is how much filling is needed inside the box? Is it possible to cover the whole thing?

    Leave a comment:


  • beenzapped68
    replied
    Afternoon Paul,
    I have to ask...
    How does the Pit Viper compare to the Tarkus?
    Seems like it would be similar in voice.
    I am thinking of using my Tarkus for surrounds and the Pit Vipers for my mains.
    What are your thoughts?

    Leave a comment:


  • Drummer
    replied
    I can't wait to see these and hear what you think. I've been dragging my feet on a pair of Vortex15 speakers, but I saw this and really love the design and the price range. Summer has been very busy, and it's motorcycle season, so here's to living vicariously! Glenn.

    Leave a comment:


  • djg
    commented on 's reply
    That looks like it. .49DCR

  • djg
    commented on 's reply
    Yes, good plan.

    And that would make it easier to biamp your pit vipers with this terminal cup.

    Parts Express Bi-Amp Speaker Terminal Cup Gold Binding Post Banana JackRecessed mount speaker terminal with two pair of gold plated binding posts. Perfect for speakers that utilize a separate amp for woofer and tweeter. Gold plated bridging bars included for conventional applications. Also ideal for dual voice coil subwoofer input and output terminals. Accepts up to 8 gauge wire. Can also be used with dual banana plugs.Dimensions:• Overall size: 4-13/16" x 3-3/4"; cutout: 3-7/8" x 3" • Connectors accept 0.205" female disconnect terminals • Includes gasket.

  • Serenitynow
    replied
    This appears from the part number to be the same as what is back-ordered on PE.
    Can anyone verify ?

    Leave a comment:


  • Serenitynow
    replied
    Originally posted by djg View Post
    I would make 3 separate crossover boards given the room available, one for each driver. Leads to less confusion if you're new to crossovers. No condescension, I would do 3 boards myself. More coil separation possible.
    I actually had considered that.
    I guess I could mount the woofer board on the bottom of the enclosure and the mid and tweeter boards on the window pane braces closest to those drivers.
    Does that sound logical ?

    Leave a comment:


  • djg
    replied
    I would make 3 separate crossover boards given the room available, one for each driver. Leads to less confusion if you're new to crossovers. No condescension, I would do 3 boards myself. More coil separation possible.

    Leave a comment:


  • Serenitynow
    replied
    Paul Carmody

    Hi again. Well, I've gotten in everything except the L4 inductor and a couple other odds and ends for these.

    Would it be possible for you to post a picture of your crossover board layout. I'm wanting to organize this correctly.
    Thanks again for everything you do for us !

    Leave a comment:


  • Paul Carmody
    commented on 's reply
    Any one of those 3 is totally fine.

    As I said earlier, I'm gonna go ahead and say it's OK to use an air core 5 mH coil, even if its DCR is slightly above 1. It'll work out, and you'll like it :-)

  • Paul K.
    commented on 's reply
    FWIW, I wouldn't hesitate to use No. 1. There's nothing wrong IMO with using a steel laminate inductor regarding sound quality, especially in a woofer crossover, and it's sure less expensive. In my Post #101 in this thread, the response for the modeling I did of the Pit Vipers had 0.5 ohms added in series with the woofer to represent the resistance of a series crossover inductor, which is almost identical to the d.c. resistance for your No. 1 inductor candidate. Nevertheless, the Pit Vipers is Paul C's design, not mine.
    Paul

  • 9sheng
    replied
    I saw the discussion about the L4 coil. I'm still a little confused. I hope to get more answers here. I found 3 options from suppliers and they all have different prices.

    Click image for larger version

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    I know number 3 is definitely ok. But what's the downside of using No. 2? Can No. 2 meet the design requirements? Because I want to achieve the best results while keeping costs in check. As you all see, I still have a lot to buy.
    I've also seen iron core inductors like size 1 used on some projects by others, as Paul.C said, you can choose any type of inductor! The question is, is number 1 ok? If it is used, what is the disadvantage compared to the No. 2 hollow coil?
    Although the copper wire of No. 1 in the picture is only 1.2mm, I can also find 1.6mm 5mH iron core inductors, and their internal resistance should also be less than 1Ω.


    Leave a comment:

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