After a looooong hiatus from speaker building, I’m getting keen again. I’m considering an MLTL with a single Seas ER18 woofer… Anyone have any guidance on something like this? I know there’s a few MTMs with this driver, but for aesthetic reasons I’d like to stick with just one in a small-ish tower. Thanks!
Please define 'tallish' in reference to what desired woofer/floor height and are the bold specs acceptable?
T/S max flat alignment for published specs:
Vented net volume (Vb) (L) = 20*32*0.32^3.3 = 14.9 L (Ft^3 = (Vb)/~28.31685)
Vented box tuning (Fb) (Hz) = 0.42*37*0.32^-0.96 = 46.4 Hz
F3 (Hz) = 37*0.28*0.32^-1.4 = 51 Hz
T/S max flat alignment for published specs:
Vented net volume (Vb) (L) = 20*32*0.32^3.3 = 14.9 L (Ft^3 = (Vb)/~28.31685)
Vented box tuning (Fb) (Hz) = 0.42*37*0.32^-0.96 = 46.4 Hz
F3 (Hz) = 37*0.28*0.32^-1.4 = 51 Hz
I'm thinking sorta 40-44". But I could be talked into taller, if there were some advantage that isn't clear to me. I'm deferring to the experts on this one! And yes, 50 Hz-ish tuning is fine, I can probably find a place to hide a subwoofer...
No need unless wanting as narrow and or shallow as practical as long as it's > ~36" i.d. where it morphs into a vented TL (MLTL).
OK, with the driver this high (40" + bottom plate thickness) relative to its tiny Vb, min. W x D to fit the driver I had to increase Vb and because its low Qt ideally needs an inverse tapered vented TL (ML-TQWT), its sim isn't as 'billiard table' smooth/flat looking, but should perform just fine once you've damped to 'taste' (I just damped for max flat to give you a 'frame of reference' for 'fill' amount) and depending on room, etc., location may need to critically damp the vent also once 'in situ'.
