True Bass ultra 10's
Ultra 10's are D4 only and rated for 600rms and 3K burps up to 3sec, specs are as follows
Re = 6.2638 ohms
Fs = 34.4071 Hz
Zmax = 139.8793 ohms
Qes = 0.2495
Qms = 5.3222
Qts = 0.2383
Le = 4.1471 mH (at 1 kHz)
Diam = 206.3750 mm ( 8.1250 in )
Sd =33450.6109 mm^2( 51.8486 in^2)
Vas = 29.1322 L ( 1.0288 ft^3)
BL = 25.1720 N/A
Mms = 116.7464 g
Cms = 183.2737 uM/N
Kms = 5456.3213 N/M
Rms = 4.7422 R mechanical
Efficiency = 0.4469 %
Sensitivity= 88.5199 dB @1W/1m
Sensitivity= 89.5824 dB @2.83Vrms/1m
These sound good in 1-1.5 cubic ft tuned from 32-35Hz
They will not work in sealed enclosures, or 4th order BP, Ported and 6th order only for decent sounding applications.
Great shape very light use!! Really wanted to mess around with these and see how stout they really are but things have changed and this would be on the back burner for quite a while.
140 shipped each
260 shipped for the pair. Would rather not split but will if needed
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