Data Sheet

15W700
Low Frequency Transducer
FERRITE LF-MB-MF TRANSDUCERS
Eighteen Sound engages in research and product improvement. New materials and design refinements can be introduced into existing products without notice.
EIGHTEEN SOUND - Via dell'Industria 20 - 42025 Cavriago Italy - Tel. [phone] - Fax [phone]
Version 23/06/2010
GENERAL SPECIFICATIONS
NOMINAL DIAMETER 380 mm (15 in)
RATED IMPEDANCE 8 Ohm
AES POWER 450 W
PROGRAM POWER (1) 700 W
PEAK POWER (2) 1500 W
SENSITIVITY (3) 99 dB
FREQUENCY RANGE (4) 38 ÷ 5000 Hz
POWER COMPRESSION
@-10DB (5)
0,7 dB
POWER COMPRESSION @-3DB 2,3 dB
POWER COMPRESSION @FULL
POWER
3,4 dB
MAX RECOMM. FREQUENCY 2000 Hz
RECOMM. ENCLOSURE VOLUME 80 ÷ 140 lt. (2,82 ÷ 4,95 cuft)
MINIMUM IMPEDANCE 6,8 Ohm at 25°C
MAX PEAK TO PEAK EXCURSION 35 mm (1,38 in)
VOICE COIL DIAMETER 75 mm (3 in)
VOICE COIL WINDING MATERIAL aluminum
SUSPENSION M-roll, Polycotton
CONE Curvilinear, Paper
THIELE SMALL PARAMETERS (6)
Fs 38 Hz
Re 5,7 Ohm
Sd 0,085 sq.mt. (131,75 sq.in.)
Qms 3,8
Qes 0,33
Qts 0,3
Vas 217 lt. (7,67 cuft)
Mms 80 gr. (0,18 lb)
BL 18,4 Tm
Linear Mathematical Xmax (7) ± 6,5 mm (± 0,26 in)
Le (1kHz) 1,57 mH
Ref. Efficiency 1W@1m (half
space)
97,8 dB
MOUNTING INFORMATIONS
Overall diameter 387 mm (15,23 in)
N. of mounting holes 8
Mounting holes diameter 7,15 mm (0,28 in)
Bolt circle diameter 370 - 371 mm (14,55 - 14,6 in)
Front mount baffle cutout ø 353 mm (13,90 in)
Rear mount baffle cutout ø 357 mm (14,06 in)
Total depth 168,5 mm (6,63 in)
Flange and gasket thickness 19,5 mm (0,76 in)
Net weight 8,6 kg (18,98 lb)
Shipping weight 9,7 kg (21,41 lb)
CardBoard Packaging
dimensions
405 x 405 x 214 mm (15,94 x 15,94 x
8,43 in)
FREQUENCY RESPONSE CURVE OF 15W700 MADE ON 125 LIT. ENCLOSURE TUNED 50HZ
IN FREE FIELD (4PI) ENVIRONMENT. ENCLOSURE CLOSES THE REAR OF THE DRIVER.
THE THIN LINE REPRESENTS 45 DEG. OFF AXIS FREQUENCY RESPONSE
FREE AIR IMPEDANCE MAGNITUDE CURVE
NOTES
(1) Program power rating is measured in 125 lit enclosure tuned 50Hz using a 40 - 400Hz band
limited pink noise test signal with 50% duty cycle, applied for 2 hours.
(2) The peak power rating represents the maximum permitted instantaneous peak power level
over a maximum period of 10ms which will be withstood by the loudspeaker without damage.
(3) Sensitivity represents the averaged value of acoustic output as measured on the forward
central axis of cone, at distance 1m from the baffle panel, when connected to 2,83V sine wave
test signal swept between 100Hz and 500Hz with the test specimen mounted in the same
enclosure as given for (1) above.
(4) Frequency range is given as the band of frequencies delineated by the lower and upper
limits where the output level drops by 10 dB below the rated sensitivity in half space
environment.
(5) Power compression represents the loss of sensitivity for the specified power, measured from
50-500 Hz, after a 5 min pink noise preconditioning test at the specified power.
(6) Thiele - Small parameters are measured after the test specimen has been conditioned by
450 W AES power and represent the expected long term parameters after a short period of use.
(7) Linear Math. Xmax is calculated as (Hvc-Hg)/2 + Hg/4 where Hvc is the coil depth and Hg is
the gap depth.