WF138WA01-03 specifications.indd - Intertechnik
WF138WA01-03 specifications.indd - Intertechnik WF138WA01-03 specifications.indd - Intertechnik
SPECIFICATIONS WF138WA01 / WF138WA03, 5½” neodymium mid/woofers WF138WA01 (4 ohm version) and WF138WA03 (8 ohm version) are mid/woofers designed for demanding bass and midrange applications. They function equally well for high-end hi-fi, high quality home theater systems, and top multimedia setups. Powering is by a dual neodymium magnet structure that ensures good efficiency and optimal T/S parameters, and at the same times offers extremely good magnetical (video) shielding. Using neodymium magnets further reduce the voice coil inductance and the voice coil inductance variation resulting in extremely “clean” and detailed sound. The large 32mm voice coil and the special heat sink ensure high power handling - thermally and mechanically. The optimized paper cone ensures large bandwidth and low distortion. Distortion is further reduced by efficient venting of chassis and voice coil. Minimal mechanical losses ensure unusual detail and dynamics. WF138WA01/03 is the obvious choice for compact high-end 2- way speaker systems. FEATURES • • • • • • • • • • Very powerful dual neodymium motor for optimal control and dynamic performance Heat sink for increased heat transfer obtaining high long-term power handling Vented voice coil former for reduced distortion and compression Vented chassis for lower air flow speed reducing audible distortion Heavy-duty black fiber glass voice coil bobbin to increase power handling and reduce mechanical losses resulting in better dynamic performance and low-level details Large motor system with 1¼” voice coil diameter and dual neodymium magnet for better control and efficiency Dual neodymium magnet structure for almost ideal magnetical shielding Long linear stroke motor for reduced distortion at high levels Linear suspension with specially designed CONEX damper (spider) for long durability under extreme operating conditions Gold plated terminals to prevent oxidation for long-term reliable connection Parameter Value, WF138WA01/WF138WA03 Unit Nominal size 5½ [inch.] Nominal impedance 4 / 8 [ohm] Recommended upper frequency limit 3,500 [Hz] Sensitivity, 2.83V/1m, (average 200-3,000Hz) 89.5 / 87.5 [dB] Voice coil diameter 32.5 [mm] Voice coil height 11 [mm] Air gap height 4.0 [mm] Voice coil resistance, RDC 3.2 / 6.3 [ohm] Voice coil inductance 0.15 / 0.23 [mH] Magnet weight (dual neodymium) 102 [g] Effective radiating area, Sd 95 [sq.cm] Power handling, continuous, IEC 268-5 60 [W] Resonance freq., Fs 59 / 64 [Hz] Moving mass, incl. air 9.75 / 9.0 [g] Force factor, Bxl 5.2 / 6.25 [Tm] Mechanical Q, Qm 7.2 / 9.4 - Electrical Q, Qe 0.43 / 0.56 - Total Q, Qt 0.39 / 0.53 - Suspension compliance, Cms 0.74 / 0.70 [mm/N] Equiv. air volume, Vas 9.6 / 9.5 [lit.] Total unit net weight 0.65 [kg] dBSPL 110 105 : on axis : 30 deg. off axis : 60 deg. off axis : Impedance SPL & impedance response Ohm 500 200 dBSPL 110 105 : on axis : 30 deg. off axis : 60 deg. off axis : Impedance SPL & impedance response Ohm 500 200 100 100 95 100 95 100 90 50 90 50 85 20 85 20 80 10 80 10 75 5 75 5 70 70 65 2 65 2 60 1 20 Hz 50 100 200 500 1K 2K 5K 10K 20K Measuring conditions Frequency, Hz Driver mounting: Flush in infinite baffle, back side open (no cabinet) Microphone distance: 1.0m Input level: 2.83VRMS WF138WA01 frequency response 60 1 20 Hz 50 100 200 500 1K 2K 5K 10K 20K Measuring conditions Frequency, Hz Driver mounting: Flush in infinite baffle, back side open (no cabinet) Microphone distance: 1.0m Input level: 2.83VRMS WF138WA03 frequency response Specifications are subject to change without any further notice. Copyright © 2006-2007 by Wavecor Ltd., Guangzhou, China. All rights reserved. Wavecor ® is a registered trademark of Wavecor Ltd. For more information please visit www.Wavecor.com Page 1
SPECIFICATIONS<br />
<strong>WF138WA01</strong> / WF138WA<strong>03</strong>, 5½” neodymium mid/woofers<br />
<strong>WF138WA01</strong> (4 ohm version) and WF138WA<strong>03</strong> (8 ohm version)<br />
are mid/woofers designed for demanding bass and midrange<br />
applications. They function equally well for high-end hi-fi, high<br />
quality home theater systems, and top multimedia setups.<br />
Powering is by a dual neodymium magnet structure that<br />
ensures good efficiency and optimal T/S parameters, and at the<br />
same times offers extremely good magnetical (video) shielding.<br />
Using neodymium magnets further reduce the voice coil<br />
inductance and the voice coil inductance variation resulting in<br />
extremely “clean” and detailed sound.<br />
The large 32mm voice coil and the special heat sink ensure high<br />
power handling - thermally and mechanically.<br />
The optimized paper cone ensures large bandwidth and low<br />
distortion. Distortion is further reduced by efficient venting of<br />
chassis and voice coil.<br />
Minimal mechanical losses ensure unusual detail and dynamics.<br />
<strong>WF138WA01</strong>/<strong>03</strong> is the obvious choice for compact high-end 2-<br />
way speaker systems.<br />
FEATURES<br />
•<br />
•<br />
•<br />
•<br />
•<br />
•<br />
•<br />
•<br />
•<br />
•<br />
Very powerful dual neodymium motor for optimal control and<br />
dynamic performance<br />
Heat sink for increased heat transfer obtaining high long-term<br />
power handling<br />
Vented voice coil former for reduced distortion and compression<br />
Vented chassis for lower air flow speed reducing audible<br />
distortion<br />
Heavy-duty black fiber glass voice coil bobbin to increase power<br />
handling and reduce mechanical losses resulting in better dynamic<br />
performance and low-level details<br />
Large motor system with 1¼” voice coil diameter and dual<br />
neodymium magnet for better control and efficiency<br />
Dual neodymium magnet structure for almost ideal magnetical<br />
shielding<br />
Long linear stroke motor for reduced distortion at high levels<br />
Linear suspension with specially designed CONEX damper (spider)<br />
for long durability under extreme operating conditions<br />
Gold plated terminals to prevent oxidation for long-term reliable<br />
connection<br />
Parameter Value, <strong>WF138WA01</strong>/WF138WA<strong>03</strong> Unit<br />
Nominal size 5½ [inch.]<br />
Nominal impedance 4 / 8 [ohm]<br />
Recommended upper frequency limit 3,500 [Hz]<br />
Sensitivity, 2.83V/1m, (average 200-3,000Hz) 89.5 / 87.5 [dB]<br />
Voice coil diameter 32.5 [mm]<br />
Voice coil height 11 [mm]<br />
Air gap height 4.0 [mm]<br />
Voice coil resistance, RDC 3.2 / 6.3 [ohm]<br />
Voice coil inductance 0.15 / 0.23 [mH]<br />
Magnet weight (dual neodymium) 102 [g]<br />
Effective radiating area, Sd 95 [sq.cm]<br />
Power handling, continuous, IEC 268-5 60 [W]<br />
Resonance freq., Fs 59 / 64 [Hz]<br />
Moving mass, incl. air 9.75 / 9.0 [g]<br />
Force factor, Bxl 5.2 / 6.25 [Tm]<br />
Mechanical Q, Qm 7.2 / 9.4 -<br />
Electrical Q, Qe 0.43 / 0.56 -<br />
Total Q, Qt 0.39 / 0.53 -<br />
Suspension compliance, Cms 0.74 / 0.70 [mm/N]<br />
Equiv. air volume, Vas 9.6 / 9.5 [lit.]<br />
Total unit net weight 0.65 [kg]<br />
dBSPL<br />
110<br />
105<br />
: on axis<br />
: 30 deg. off axis<br />
: 60 deg. off axis<br />
: Impedance<br />
SPL & impedance response<br />
Ohm<br />
500<br />
200<br />
dBSPL<br />
110<br />
105<br />
: on axis<br />
: 30 deg. off axis<br />
: 60 deg. off axis<br />
: Impedance<br />
SPL & impedance response<br />
Ohm<br />
500<br />
200<br />
100<br />
100<br />
95<br />
100<br />
95<br />
100<br />
90<br />
50<br />
90<br />
50<br />
85<br />
20<br />
85<br />
20<br />
80<br />
10<br />
80<br />
10<br />
75<br />
5<br />
75<br />
5<br />
70<br />
70<br />
65<br />
2<br />
65<br />
2<br />
60<br />
1<br />
20 Hz 50 100 200 500 1K 2K 5K 10K 20K<br />
Measuring conditions<br />
Frequency, Hz<br />
Driver mounting: Flush in infinite baffle, back side open (no cabinet)<br />
Microphone distance: 1.0m<br />
Input level: 2.83VRMS<br />
<strong>WF138WA01</strong> frequency response<br />
60<br />
1<br />
20 Hz 50 100 200 500 1K 2K 5K 10K 20K<br />
Measuring conditions<br />
Frequency, Hz<br />
Driver mounting: Flush in infinite baffle, back side open (no cabinet)<br />
Microphone distance: 1.0m<br />
Input level: 2.83VRMS<br />
WF138WA<strong>03</strong> frequency response<br />
Specifications are subject to change without any further notice. Copyright © 2006-2007 by Wavecor Ltd., Guangzhou, China. All rights reserved.<br />
Wavecor ® is a registered trademark of Wavecor Ltd.<br />
For more information please visit www.Wavecor.com<br />
Page 1
SPECIFICATIONS<br />
<strong>WF138WA01</strong> / WF138WA<strong>03</strong>, 5½” neodymium mid/woofers<br />
OUTLINE DRAWING (dimensions in mm)<br />
138<br />
R<br />
115<br />
max 62<br />
3.2<br />
EVA gasket attached to<br />
rear side of chassis<br />
max 118<br />
4 x<br />
4.50<br />
138<br />
155.8<br />
CROSS SECTION<br />
1. Black anodized flux return path<br />
2. Primary neodymium magnet<br />
3. Black anodized heat sink<br />
4. 1¼” voice coil<br />
5. Black anodized pole plate<br />
6. Black anodized top plate<br />
7. Secondary neodymium magnet<br />
8. Black glass fiber bobbin<br />
9. Ventilated chassis<br />
10. Linear lower suspension (spider), Conex<br />
11. Paper dust cover<br />
12. Optimized paper cone<br />
13. Linear low-loss rubber suspension<br />
PACKAGING INFORMATION<br />
<strong>WF138WA01</strong>-01<br />
4 ohm, one piece per box<br />
<strong>WF138WA01</strong>-02<br />
4 ohm, bulk packaging<br />
WF138WA<strong>03</strong>-01<br />
8 ohm, one piece per box<br />
WF138WA<strong>03</strong>-02<br />
8 ohm, bulk packaging<br />
Specifications are subject to change without any further notice. Copyright © 2006-2007 by Wavecor Ltd., Guangzhou, China. All rights reserved.<br />
Wavecor ® is a registered trademark of Wavecor Ltd.<br />
For more information please visit www.Wavecor.com<br />
Page 2
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