The waveguide is the greater determinant with regards to the crossover frequency because it determines where the useful directivity will be. The driver is less critical in that regard as most will go low enough in a domestic situation.
(Edit: GM I assumed you were talking to me. If not, Vituixcad would need measurements. There is little guiding driver choice here as it has relatively little bearing on things at most frequencies.)
(Edit: GM I assumed you were talking to me. If not, Vituixcad would need measurements. There is little guiding driver choice here as it has relatively little bearing on things at most frequencies.)
Hmm, OK.......assuming 5" is Sd dia., then ~13543/pi/5 = ~862 Hz whereas when I reverse engineer it I get a ~861.5 Hz cutoff, but can't make up my mind if coincidence or have I been missing something very basic all these decades.
I'd be estimating a broad range of between 1.6k and 3.2kHz, however if the vertical has been held to some more narrow angle things could get even less ideal.
I'm busy with a build with the top section of the calpamos but with the exellent and often overlooked 12" Beyma 12BR70 as woofer in a TL type design. The goal is to have a lower response (F6 at >30Hz) as the owner will use it as garden reggae soundsystem. The Beyma is a lot cheaper than the 15PR400, but a good replacment i think. You could also use it in a reflex tuned to how low you want it. You need to crossover below 1kHz (but with the calpamos it's a lot lower) and best uss dsp as the tweeter is a lot more sensitive than the woofer. That 12BR70 can have a good response to 30Hz in a 150L cabinet with 2x 10cm diameter vents of 36cm long and hit 110dB at 30Hz before running out of xmax. So for hifi level use you got tons of headroom.
I have no real cabinet designs drawings, just a list of wood parts and sizes and some 2D drawings of the front and some other panels. I will make a plan for this later and publish it when i've build it and tested it. Build is going on, but it's a slow build as i don't have much time and neighter has the futur owner who assists in the build...
I have no real cabinet designs drawings, just a list of wood parts and sizes and some 2D drawings of the front and some other panels. I will make a plan for this later and publish it when i've build it and tested it. Build is going on, but it's a slow build as i don't have much time and neighter has the futur owner who assists in the build...
I just bought a pair of these https://reconingspeakers.com/products-page/jbl-horn-lens-5006815-stx825/ to use with 2431s. Initial testing is very good to just below 1000hz. I'm building a system with 2206s crossed at 1500. So far no EQ is needed.
You
can use the Wavecor tw030wa12 at the same crosover point. FWIW a Dayton 8" with tw030wa12 might be a better alternative.