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

[djg]

I don't mind giving advice but this is Paul C.'s design. Read back in this thread and follow his advice on what's an acceptable substitute. I believe he clearly addressed this. He forgot more today than I know about XO design. I just have experience following plans, schematics and instructions. Good luck.

[Serenitynow]

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 ?

[djg]

Yes. NPEs are a cost saving measure. All of the NPEs can be poly caps if you wish. Large poly caps get expensive.

[Serenitynow]

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

[9sheng]

@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?

[beenzapped68]

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?

[Drummer]

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.

[djg]

That looks like it. .49DCR

[djg]

Yes, good plan.

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

https://www.parts-express.com/Bi-Amp-Speaker-Terminal-Gold-Binding-Post-260-281

[Serenitynow]

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

[Serenitynow]

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 ?

[djg]

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.

[Serenitynow]

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 !

[Paul Carmody]

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.]

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