how large a floor gapped base to tune a little MLTL?


Paid Member
2005-08-16 4:21 pm
say its like a Zu Druid but for a Delta Pro8a - around 32 sq.inch cross-section pipe, a bit more than 24 inches tall. Target fb in the upper 60's - about how big would the base be to tune in that area with a 3/4" gap to floor via spikes? - would it be better just to use a short duct? the base would add a bit of stability - don't know if a pipe like that so small would sound good but sims ok in hornresp with a low source Z. A waveguide with compression driver would go above. Eminence's recommended half cubic foot reflex is tuned ~105

a usable 70Hz would be nice to blend with a little sub

Resonant Frequency (Fs)69 Hz
DC Resistance (Re)5.6
Voice Coil Inductance (Le)0.82 mH
Mechanical Q (Qms)6.43
Electromagnetic Q (Qes)0.22
Total Q (Qts)0.22
Compliance Equivalent Volume (Vas)0.65 ft.³
Mechanical Compliance of Suspension (Cms)0.28 mm/N
BL Product (BL)14.1 Tm
Diaphragm Mass Inc. Airload (Mms)19g
Maximum Linear Excursion (Xmax)3 mm