Site Links
Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Quick Links
Categories
In this Discussion
New project release - The Pura Vidas
I wanted to design and build a cool little pair of speakers to gift to our new pastor for his office. The Peerless 830870 4" poly drivers were the DOTD so I bought a pair. I already had a pair of SB Acoustics SB26STCN tweeters on the shelf so that's what I ran with. These turned out WAY better than I expected. While the bass response doesn't "do a strong 40 Hz" lol, it is quite satisfying with an F3 of 58 Hz. Honestly they sound much bigger and better than I would expect a pair of 4" woofers should sound. The crossover design is nothing special, no fancy Zobels or L-pads, but it works perfectly, mostly due to the really smooth response of both drivers. Huge surprised to me is the awesome midrange detail of these poly woofers. As always, I measure, design, and voice my speakers on stands out about 2 feet away from the front wall. So about 5-6 dB of baffle step compensation. Following are a couple of pictures, enclosure/baffle details, crossover schematic, and some box sims:
Comments
whats your opinion on the SB tweeters?
Used them in my Jonquils project several years ago. They are great tweeters.
In case you were wondering about the name:
https://en.wikipedia.org/wiki/Culture_of_Costa_Rica#Pura_vida
Pura vida!
Looks like a killer little build!
That does look like a nice pairing. I like how that woofer does not severely unload at low frequencies. I think I recall JR pointing that out in one of his writeups.
Sehlin Sound Solutions
Good lord Craig , tell you what , for a challenge , knock out two more designs by 2021 and Ill send you a pair of drivers , my choice .
Nicely done, Craig- that's what 5 pair this year now?
InDIYana Event Website
Good job, you are PRODUCTIVE!!!!
Great little build! Those SB tweeters are really a bargain for their high quality.
Awwww so cute! No doubt, your in production stage, just cranking them out.👍🏻
Yeah 5 pair, maybe 6 this year. I dismantled a couple that didn't make the final cut. Covid has kept us home more so lots of time with the family and building speakers.
Yes, I can crank them up with my Adcom amp and the woofers never bottom out.
BTW - happy Thanksgiving everyone!
Nice job Craig! The SB26STCN tweeter has always been a favorite of mine too.
Weather permitting....
You got it , Happy Thanks giving brother and to everyone else.
Weather has been great here the last few days Nick