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WF146WA01/02     5 paper cone mid/woofer, 4/8 ohm

 

 

 

 

Nominal impedance is 4 ohm for WF146WA01 and 8 ohm for WF146WA02. Otherwise the two models are identical.
WF146WA01/02 are mid/woofers designed for demanding bass and midrange applications. They work equally well for high-end hi-fi, high quality home theater systems, and top multimedia setups.
Powering is by a large 90 mm magnet structure that ensures good efficiency and optimal T/S parameters.
A large 32 mm voice coil ensures high power handling - thermally and mechanically
The optimized paper cone ensures large bandwidth and low distortion. Distortion is further reduced by efficient venting and an alu shorting ring stabilizing the magnetic

Frequency resp.
Specifications
Dimensions
Ordering info

field in the air gap.
WF146WA01/02 are very good choices for compact 2-way speaker systems or even as midrange in multi-way systems.

FEATURES

WF146WA
Extensive_venting
  • Alu field-stabilizing ring inside magnet assembly for reduced high-level distortion
  • Vented voice coil former for reduced distortion and compression
  • New 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 1” voice coil diameter and 90 mm magnet for better control, power handling, and efficiency
  • Black magnet parts for better heat transfer to increase power handling
  • New progressive 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

FREQUENCY RESPONSE

WF146WA01-SPL&IMP-response

Measuring conditions, SPL
Driver mounting: Flush in infinite
     baffle, back side open  (no cabinet)
Microphone distance: 1.0 m
Input level: 2.83 VRMS
Smoothing: 1/6 oct.

Measuring conditions, impedance
Driver mounting: Free air, no baffle,
     back side open (no cabinet)
Input signal: Semi-current-drive,
     nominal current 2 mA
Smoothing: None

WF146WA02-SPL&IMP-response

Measuring conditions, SPL
Driver mounting: Flush in infinite
     baffle, back side open  (no cabinet)
Microphone distance: 1.0 m
Input level: 2.83 VRMS
Smoothing: 1/6 oct.

Measuring conditions, impedance
Driver mounting: Free air, no baffle,
     back side open (no cabinet)
Input signal: Semi-current-drive,
     nominal current 2 mA
Smoothing: None

NOMINAL SPECIFICATIONS

Notes

  Parameter

WF146WA01

WF146WA02

Unit

Before burn-in

After burn-in

Before burn-in

After burn-in

 

 Nominal size

5

5

 [inch.]

 

 Nominal impedance

4

8

 [ohm]

 

 Recommended max. upper frequency limit

3.5

3.5

 [kHz]

1, 3

 Sensitivity, 2.83V/1m (average SPL in range 200 - 1,000 Hz)

90

87.5

 [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

55

55

 [W]

 

 Effective radiating area, Sd

95

95

 [sq.cm]

3, 6

 Resonance frequency (free air, no baffle), Fs

56

 

58

 

 [Hz]

 

 Moving mass, incl. air (free air, no baffle), Mms

10.4

9.7

 [g]

3

 Force factor, Bxl

5.1

6.4

 [N/A]

3, 6

 Suspension compliance, Cms

0.78

 

0.78

 

 [mm/N]

3, 6

 Equivalent air volume, Vas

10.0

 

10.0

 

 [lit.]

3, 6

 Mechanical Q, Qms

7.0

 

7.0

 

 [-]

3, 6

 Electrical Q, Qes

0.45

 

0.54

 

 [-]

3, 6

 Total Q, Qts

0.42

 

0.51

 

 [-]

4

 Voice coil resistance, RDC

3.2

6.3

 [ohm]

5

 Voice coil inductance, Le (measured at 10 kHz)

0.24

0.39

 [mH]

 

 Voice coil inside diameter

32

32

 [mm]

 

 Voice coil winding height

11

11

 [mm]

 

 Air gap height

5

5

 [mm]

 

 Magnet weight

400

400

 [g]

 

 Total unit net weight excl. packaging

1.03

1.03

 [kg]

3, 5

 Krm

0.19

0.14

 [mohm]

3, 5

 Erm

0.96

1.03

 [-]

3, 5

 Kxm

4.9

8.2

 [mH]

3, 5

 Exm

0.69

0.69

 [-]

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 10/14.1 VRMS (4/8 ohm version). The unit is not burned in before shipping.
 

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

WF146WA01/02 outline drawing
WF146WA01_02 outline drawing

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals-dimensions

PACKAGING AND ORDERING INFORMATION

Part no. WF146WA01-01

4 ohm version, individual packaging (one piece per box)

Part no. WF146WA01-02

4 ohm version, bulk packaging

Part no. WF146WA02-01

8 ohm version, individual packaging (one piece per box)

Part no. WF146WA02-02

8 ohm version, bulk packaging

Latest update: December 1, 2013
 

 

Specifications are subject to change without any further notice.
Copyright © 2006-2014 by Wavecor Ltd., Guangzhou, China. All rights reserved.

 

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MORE INFO

WF146WA01/02 specificationsPDF data sheet
(515 KB)

 

 

 

 

Specifications in electronic formats

 

List of all mid/woofers

 

All Wavecor drive units

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