I'm thinking of building a 4-ohm, 1x12 for dual use - as an extension (actually bypassing the internal 8" speaker) for my little orange Crush 25, but also suitable for use with something like a Trace Elliot Elf..
I'm afraid I like a somewhat bottom heavy sound... might the Beyma 212 be what I want?
I've been pondering a 1x12 build for along time and been playing with Winlsd guided by multiple threads on this forum. I've found this thread particularly useful.
Looking at a 60l cab ( a bit bigger than Phil's design, but bout what I want) tuned to 48hz, I get a max SPL of 120dB at 350 W (I wouldn't want to put quite that much power through it) and a single 8.2cm port gives a vmax of 17 m/s.
At a realistic 25W this would give an spl of 108dB which I reckon would be enough for non-drummer situations and with a 250W amp 119dB would be enough for small gigs...
So questions:
1 Do those figures seem in the right ballpark?
2 I recall from 'designing' 'hifi' cabs in the late 70s (armed with no more than library books and Radiospares recommended cabinet volume) that it was 'good thing' to make sure all the internal dimensions were different (and ideally not simple multiples of each other) to minimise extra resonances. Does this apply to basscabs in a meaningful way - I note that many combos appear to be almost cubes.
3 what do the jury say about wadding?