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

[Paul Carmody]

It looks like the Peerless D27TG35-06

Correct. And I'm really happy with it in this application. Also, I just noticed that it's seems to be another casualty of slow supply chain. Hopefully more come in stock sooner than later!

[Paul Carmody]

On the subject of bracing

As I mentioned earlier, this cabinet definitely needs some bracing. My go-to is usually scraps of MDF, 2-3 inches wide, jammed/glued between walls. So that's basically what I did here.

I tried to tie in the back walls and the top as well. Could this be improved? Yes! In fact, I invite anyone out there who builds this design to experiment with different ways to give the cabinet some rigidity and raise the resonant frequency. (Or, if you're just good at CAD and want to draw something, I'd be interested to see that, too)

Here's my basic process for adding bracing:
1. I knock on the cabinet wall with my knuckles
2. Then I wedge the piece of MDF in place
3. I knock again on the cabinet and listen for the pitch to go up.
4. If I like the spot, I apply some glue on either side and wedge it back in
5. sometimes I'll shoot a brad nail in from the outside to hold it in place while the glue dries--although that takes some pretty good aim.

Also, you probably also notice a strip of hardwood around the inner perimeter of the front edge of the cabinet--that's for having something to screw the baffle into. Oak on the top + bottom, and maple on the sides, if anyone cares. Doing a removable baffle is actually a lot of extra steps, and somewhat of a hassle, but it's worth it in the long run as I can keep cutting new baffles to experiment with different driver combos.

[Mainframe]

I did see that but remembered it was voiced as in wall so baffle step compensation would be light if any. But yes, that is a nice, simple, veery budget 3 way build. Something in the next budget category is missing, and this pit viper could be the answer.

[djg]

Johnny Richards came up with a 3 way a few years ago, very inexpensive and very easy, Le Singe Sarcophage if you're looking for a budget 3 way you can build right now.

[Mainframe]

This looks like something the DIY community could use! A modern take on the monkey coffin that's not $3K per speaker. Reignite the dorm/garage party speaker.

What did you do for ports? 2x 2" or 2.5"?

Now you have me thinking - I have the BC25TG15-04 here from when I built your classix 2.5 years ago, perhaps I could follow along with the DSA315-8's I have here and get some of those new SB12's mentioned earlier and see what I can come up with.

[bassman_soundking]

Haven't seen it specified yet .
What tweeters are being used in these ?

It looks like the Peerless D27TG35-06

[Serenitynow]

Haven't seen it specified yet .
What tweeters are being used in these ?

[Serenitynow]

Hahaha
If it would help.........I'm all over it

[djg]

The Serenity Prayer.

[Serenitynow]

Oh damn. Ok.
If there's anything I can do to help this project along, just let me know.

Todd

[Paul Carmody]

To be honest, it's gonna take a while. My day job has me booked solid most days (and then my kids' various activities at night). I only get slivers of time for DIY. I'd estimate I won't have a final decision on the mid for another 2 months.

[Serenitynow]

Back on topic.
Paul, have you settled on midrange choice now ?

[fpitas]

You guys just need bigger bookshelves.

[Paul Carmody]

Yeah, see? C'mon JBL. What were you thinking? If you're gonna make a big heavy monkey coffin, do it proudly! Don't pretend to be petite. It's like the speaker equivalent of sucking in your gut.

[djg]

To Paul C's original post, I see that JBL now describes their current L100 model as a "bookshelf" speaker. Seriously. No link per PETT policy.