 |
 |
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
- Extremely rigid aluminium cone to ensure piston motion at high levels and for better heat transfer at high continuous power levels
- Die cast alu chassis with optimal ventilation and increased stroke
- Vented cone neck for reduced distortion and compression
- Vented chassis for lower air flow speed reducing audible distortion
- Heavy-duty black fiber glass voice coil bobbin to reduce mechanical losses resulting in better dynamic performance and low-level details
- Large motor system with 2” voice coil diameter and 145mm magnet for better control and efficiency
- Black-anodized magnet structure steel parts for increased heat dissipation and power handling
- Two built-in alu field stabilizing rings for reduced high-level distortion (see drawing)
- 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
- 4-layer voice coil for increased control and better small-cabinet performance
|
|
|
|
IMPEDANCE RESPONSE
|
|
|
|
NOMINAL SPECIFICATIONS
|
|
|
|
|
Notes
|
Parameter
|
Before burn-in
|
After burn-in
|
Unit
|
|
|
Nominal size
|
12¼
|
[inch.]
|
|
|
Nominal impedance
|
8
|
[ohm]
|
|
|
Recommended max. upper frequency limit
|
300
|
[Hz]
|
|
1, 3
|
Sensitivity, 2.83V/1m (calculated from T/S parameters)
|
87
|
[dB]
|
|
2
|
Power handling, short term, IEC 268-5, no additional filtering
|
|
[W]
|
|
2
|
Power handling, long term, IEC 268-5, no additional filtering
|
|
[W]
|
|
2
|
Power handling, continuous, IEC 268-5, no additional filtering
|
250
|
[W]
|
|
|
Effective radiating area, Sd
|
513
|
[sq.cm]
|
|
3, 6
|
Resonance frequency (free air, no baffle), Fs
|
28.5
|
|
[Hz]
|
|
|
Moving mass, incl. air (free air, no baffle), Mms
|
180
|
[g]
|
|
3
|
Force factor, Bxl
|
18.1
|
[N/A]
|
|
3, 6
|
Suspension compliance, Cms
|
0.173
|
|
[mm/N]
|
|
3, 6
|
Equivalent air volume, Vas
|
65
|
|
[lit.]
|
|
3, 6
|
Mechanical Q, Qms
|
11.5
|
|
[-]
|
|
3, 6
|
Electrical Q, Qes
|
0.62
|
|
[-]
|
|
3, 6
|
Total Q, Qts
|
0.59
|
|
[-]
|
|
4
|
Voice coil resistance, RDC
|
6.3
|
[ohm]
|
|
5
|
Voice coil inductance, Le (measured at 1 kHz)
|
2.5
|
[mH]
|
|
|
Voice coil inside diameter
|
51
|
[mm]
|
|
|
Voice coil winding height
|
31
|
[mm]
|
|
|
Air gap height
|
8
|
[mm]
|
|
|
Magnet weight
|
2.7
|
[kg]
|
|
|
Total unit net weight excl. packaging
|
6.5
|
[kg]
|
|
3, 5
|
Krm
|
12.8
|
[mohm]
|
|
3, 5
|
Erm
|
0.72
|
[-]
|
|
3, 5
|
Kxm
|
18.7
|
[mH]
|
|
3, 5
|
Exm
|
0.74
|
[-]
|
|
|
|
|
|
Note 1
|
Measured in infinite baffle.
|
|
Note 2
|
Tested in free air (no cabinet).
|
|
Note 3
|
Measured using a semi-constant current source, nominal level 2 mA.
|
|
Note 4
|
Measured at 20 deg. C
|
|
Note 5
|
It is generally a rough simplification to assume that loudspeaker transducer voice coils exhibit the characteristics of an inductor. Instead it is a far more accurate approach to use the more advanced model often referred to as the “Wright empirical model”, also used in LEAP-4 as the TSL model (www.linearx.com), involving parameters Krm, Erm, Kxm, and Exm. This more accurate transducer model is described in a technical paper (PDF) here.
|
|
Note 6
|
After burn-in specifications are measured 12 hours after exiting the transducer by a 20 Hz sine wave for 2 hours at level 20 VRMS. The unit is not burned in before shipping.
|
|
|
|
|
OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)
|
|
|
|
|
|
PACKAGING INFORMATION
|
|
|
|
|
Part no. SW310WA01-01
|
Individual packaging (one piece per box)
|
|
|
|
|
Latest update: October 13, 20111
|
|
|
|
|
|
Specifications are subject to change without any further notice.
Copyright © 2006-2011 by Wavecor Ltd., Guangzhou, China. All rights reserved.
|
|
|
|
MORE INFO
|
|
|
|
|
|
