Transcript
8CX400F
High Output Coaxial Ferrite Transducer
Key Features 95 dB SPL 1W / 1m average sensitivity 300 W continuous pink noise Extended high frequency response and fast transient attack Special cone design and matching HF driver to provide smooth system response and good directivity control
LF-MF DRIVERS
Ideal for compact reflex systems usage
FERRITE
50
LF GENERAL SPECIFICATIONS NOMINAL DIAMETER 200mm RATED IMPEDANCE 8 ohms CONTINUOUS PINK NOISE (1) 280W SENSITIVITY (2) 95 dB FREQUENCY RANGE (3) 65 ÷ 6100 Hz MAX RECOMM. FREQUENCY 2800 Hz RECOMM. ENCLOSURE VOLUME 10 ÷ 40 lt. VOICE COIL DIAMETER 51 mm NET WEIGHT 4,42 kg
(8 in)
(0,35 ÷ 1,41 cuft) (2 in) (9,76 lb)
HF GENERAL SPECIFICATIONS D.C. RESISTANCE 8,3 ohms POWER HANDLING CONT. PINK NOISE 25 W above 2,5 KHz CONT. PROGRAM (6) 50 W above 2,5 KHz SENSITIVITY (7) 106 dB FREQUENCY RANGE 2,5 KHz ÷ 20 KHz RECOM. CROSS. FREQUENCY 3 KHz 12 dB/oct VOICE COIL DIAMETER 25,4 mm (1 in)
(1) AES standard.
THIELE-SMALL PARAMETERS (4) Fs 64 Hz Re 5 Ohm Sd 0,0227 sq.mt. Qms 3,23 Qes 0,43 Qts 0,38 Vas 23,9 lt. Mms 18 gr. BL 9,3 Tm Mathematical Xmax (5) ±5,8 mm Le (1kHz) 0,96 mH Ref. Efficiency 1W @ 1m (half space) 93,7 dB
(2) 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 2,83 V sine wave test signal swept between 500Hz and 2500Hz with test specimen mounted in the same enclosure as given for graph text below.
(35,2 sq.in.)
(3) 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.
(0,85 cuft) (0,04 lb)
(4) Thiele - Small parameters are measured after the test specimen has been conditioned by 280 W aes power and represents the expected long term parameters after a short period of use . (5) Linear Mat. Xmax is calculated as (Hvc-Hg)/2 + Hg/4 where Hvc is the coil depth and Hg is gap depth.
(±0,23 in)
(6) Continuos program power is defined as 3 dB greater than continuous pink noise and is a conservative expression of the transducer ability to handle music program material. (7) Sensitivity is measured on 1W input on rated impedance at 1m on axis from the mouth of the woofer and averaged in 3kHz band.
FREQUENCY RESPONSE CURVE OF 8CX400F MADE ON 25 LIT. ENCLOSURE TUNED AT 65 HZ IN FREE FIELD (4PI) ENVIRONMENT. ENCLOSURE CLOSES THE REAR OF THE DRIVER. THE THIN LINE REPRESENTS HIGH FREQUENCY RESPONSE
+110
+100 S P L
+90
+80
+70 20
FREE AIR IMPEDANCE MAGNITUDE CURVE
50
100
200
500 1k FREQUENCY
2k
5k
10k
20k
50.0 40.0 30.0 Ohm 20.0 10.0
0.0 10
100
1k
Hz
10k
20k
