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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 ) .
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
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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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