The Texas Floods
The Texas Floods are a high performance bookshelf using the popular, high-performing Dayton Audio RS28A-4 and one of the best woofers I've ever heard, the Vifa (now Tymphany) NE180W-8. This set was done for a friend of mine who is really into audio. He found out that I built speakers and asked me to build him the best pair I could for around $500. I didn't have access to a wood shop/workspace at the time and WAF was a huge concern, so we used the Parts Express 1/2 cu ft pre-made cabinets and I cut the baffles while visiting my parents in my father's shop. Total parts for the build, including the cabinets, came in right around $540, but the woofers and cabinets were both on a significant sale at the time. current retail price would run around $420 for drivers and crossovers. PE doesn't have the 1/2 cu ft cabinets at this time (the are changing suppliers), but I would expect the cabinets to run at least another $250 or so if you go with the pre-finished option.
The crossover below is what I would have personally went with. He preferred more midrange boost (which likely isn't a bad thing since he will probably always be running them close to the wall), so we used a 1.2 mH inductor in his. This design worked out well in terms of flexibility. You can change the inductor between a 1.2-2.0 mH without significant change to the phase. Larger inductors will lower the midrange response and smaller values will boost the midrange. In addition, you can play with the resistor in tweeter circuit in 0.5 Ohm increments in either direction to adjust the lower to upper treble response. The slight roughness in the tweeter range is due in large part to some diffraction issues with routing the woofer cutouts just a bit too shallow and having a little bit of the edge sticking up out of the baffle. This should smooth out some if you have all driver cutouts perfectly flush and tight around the drivers.
The driver layouts for the baffle can be seen in the BoxyCad screenshot below. The 1/2 cu ft cabinet was tuned to around 48 Hz with a 2" diameter by 6.25" long port. This gives a very slight, roughly 1-1.5 dB boost around 60 Hz, and makes these speakers sound very large for their size. These sounded great without a sub and I could have easily been happy with them by themselves. The drivers will play a little deeper and flatter in a larger box if you want to extend the bass response. In this configuration, the f3/6/10 is 49/42/36 Hz.
Overall, the sound of these is very impressive. The midrange quality on the NE180W is possibly my all-time favorite, and I've heard all the high end ScanSpeak and Seas drivers before, so that says a lot. These drivers are truly state of the art and perform great for their price. Bass is nice and clean and very natural sounding. It's just too bad they aren't as cheap as they once were. The RS28 is my favorite tweeter in this price range and performs as better than pretty much everything costing up to twice as much. The combination of these two great performers makes for an exceptional speaker that produces loads of detail.
Builds and Comments
Marko from Croatia built this pair. Here is what he had to say:
"Sorry for thread necromancy but I wanted to thank the author of this project, thanks Kerry, I enjoy them immensely every day.
I built them many months ago but with crossover on top of the speaker and spaghetti of cables going to speakers via port, only recently I opened them up and put crossover neatly inside. I deviated from original only regarding enclosure size, I went with 1.0cu .ft. and the box is tuned to 42Hz. They replaced Lou C. Piccolatas I have built before.
Aye aye sir Kerry :applause:"