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First and only coaxial driver, as far as we know,
that is also time aligned ( the 2 emissive centers are at
the same place ) and that is not disturbed by recovering
frequencies and a filter right on the most sensible zone
for the human ear : 30 cm ( 12" ) high efficiency wide
range unit non filtered : 97 db, paper cone, basket and
ring made from bronze SN12 without lead, pole pieces made
of very mild steel < 0,20% carbon in pot shape with
central alnico 3SC ( = no magnetic looses ), plus
piezo-electric tweeter featuring high impedance, into a
bronze pot SN12 , sharply filtered at 11 kHz and climbing
over 30 kHz ( c .f. doc TW 37 )
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Each driver part is controlled and measured all along the
manufacturing process. Each driver is put under a very
serious pre-running and then measured in order to match
pairs with max tolerance delta as 0,2gr. on mobile
equipment mass, 0.1 Ohms on d.c. resistance, 2Hz on
resonance frequency, is numbered and life guaranty ( first
owner ) .
*This unit characteristics are the same as KM 30
exeption of voice made of silver wire insulated with 15
micrometer silk. This avoids nearly totaly the
production of MDI ( Micro Discharges of Interface ) and
other perturbations..
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| CHARACTERISTICS |
ø voice coil = 35 mm
h = 8 mm 2 layer silk silver
M = 9,7 gr
dB = 97
G = 1,4T alnico Alcomax 3SC
Admissible power = 30 W rms |
fs = 32 Hz
re = 13,8 Ohm
Qes = 0,62
Qms = 6,60
Qts = 0,59
Vas = 224 litre
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Z = 16 Ohm
Zmin = 14,9 Ohm
Zmax = 125 Ohm
D = 234 mm
Ms = 23, 2 gr
Le = 1, 2 mH |
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Recommanded speaker : BAFFLE
PLAN
you will find details into montage page.
Hole diametre = 270
7 screws ø 5 at 54,3 ° on r = 144
Net weight = 9,3 kg
Packed weight = 13,5 kg |
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| These characteristics have an indicative value
and are only the result we have in our deaf anechoic
chamber from measuring equipment actually in our
possession. It always must be kept in mind that the main
ones, as the natural, equilibrium, musicality, cannot be
described above but are only partly derived from them. |
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