I already built the Keystone 18 and the Tham 15 which are great. I also have an opening for a smaller compact travel subwoofer that provides bass "inside" a house not outside.
DIYAUDIO KEF REPLACEMENT DRIVER DRIVERS
Well I have some 10" drivers (Alpine Type R 4 ohms) laying around that NEED a home. That said, I am also open to a new design with larger drivers if it would sound better.
DIYAUDIO KEF REPLACEMENT DRIVER DRIVER
I've read all I can find about WAWs, and the prevailing wisdom seems to say I should go with the smallest driver I can that will cross over at the desired low end (150-300hz). Does anyone with modeling skills have the time and inclination to help me out? I know a different enclosure (Fonken-steen?) would give me better bass, but would it also help with mids and low mids? Has driver technology gotten so much better that I'd be better off swapping them out with a new Alpair, Tang Band, or something? It can get a bit shouty at times, but perhaps it is just revealing poor sources. What do you folks think? Is this about as good as the F120a gets? It is super fast, detailed and rarely harsh. The driver is centered in the front baffle (see picture). The internal box measures 11.5" wide, 7.25" deep and 5.5" high and is fully lined with 3/4" wool felt and stuffed with medium-density poly fiber. That said, I haven't modeled it and don't know what exactly I've done. I am wondering if the enclosure is muddying the sound in some way? Baffle step loss? Perhaps allowing sound to reflect back through the thin cone of the driver? I've played with a 66.25mf capacitor to attenuate the bass, and eliminating the lowest frequencies seems to have sharpened the midrange, especially at high volume. The highs are a bit rolled off, but that was understood from the start. The Dayton RSS210HO-8 8" sub is powered by a separate Crown XRS1500 amp with electronic crossover and the combination has WAY more output than I need. The result is.pretty good, but I wonder if a different enclosure would get more out of the Fostex. I hadn't heard them, but since I am only a beginner at this and don't have design software, I figured imitating Louis was a good idea. To make integration as easy as possible I ended up building a sealed-box WAW, following the general dimensions of the Omega Outlaw 3xrs (27"H x 11"W x 7.5"D).
My listening room is only 10' wide, so my speakers are only a few inches away from the front wall.
Without knowing any better I looked at the specs of the 120a, saw that some folks had used them with success (including Blumenstein with his short-lived Makos), and decided to go for it. They hooked me on speed and dynamics, but were quite harsh and shouty even with my Bottlehead Stereomour 2a3-based SET. I had gotten a taste for full-range/wideband speakers via a pair of 1st gen. A few years ago I bought a pair of Fostex F120a for a WAW build.
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