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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
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| CHARACTERISTICS
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ø
voice coil = 35 mm
h = 8 mm 2 layers cu
M = 9,7 gr
dB = 97
G = 1,4T alnico Alcomax 3SC
Admissible power= 50 W |
fs
= 36 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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