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WF118WA05/06      4 glass fibre cone mid/woofers, 4/8 ohm

 

 

 

 

WF118WA05/06 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, etc.
Powered by a large 85 mm magnet structure that ensures good efficiency and optimal T/S parameters.
The large 32 mm voice coil ensures high power handling - thermally and mechanically
The new optimized woven glass fibre cone ensures large bandwidth and low distortion. Distortion is further reduced by efficient venting and by adding an internal alu shorting ring to  stabilize the magnetic field in the air gap.

FEATURES

WF118WA05_06-photo
  • Glass-Fibre-coneNew optimized glass fibre cone design
  • Rigid steel chassis with extensive venting for lower air flow speed reducing audible distortion
  • Vented center pole with dual flares for reduced noise level at large cone excursions
  • Heavy-duty fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
  • Large motor structure for better control and power handling
  • Built-in alu field-stabilizing ring for reduced distortion at high levels
  • Low-loss suspension (high Qm) for better reproduction of details and dynamics
  • Black plated motor parts for better heat transfer to the surrounding air

    Frequency resp.
    Specifications
    Dimensions
    Ordering info

  • Conex spider for better durability under extreme conditions
  • Gold plated terminals to ensure long-term trouble free connection
  • Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing
     

FREQUENCY RESPONSE

WF118WA05-freq-response

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

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

WF118WA05-imp-response
WF118WA06-freq-response

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

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

WF118WA06-imp-response

SPECIFICATIONS

Notes

  Parameter

WF118WA05

WF118WA06

Unit

Before burn-in

After burn-in

Before burn-in

After burn-in

 

Nominal size

4.5

4.5

[inch.]

 

Nominal impedance

4

8

[ohm]

 

Recommended max. upper frequency limit

4

4

[kHz]

1, 3

Sensitivity, 2.83V/1m (average 400-4,000 Hz)

87.5

84.5

[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

50

50

[W]

 

Effective radiating area, Sd

54

54

[sq.cm]

3, 6

Resonance frequency (free air, no baffle), Fs

65

 

66

 

[Hz]

 

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

7.1

6.9

[g]

3

Force factor, Bxl

4.3

5.6

[N/A]

3, 6

Suspension compliance, Cms

0.84

 

0.84

 

[mm/N]

3, 6

Equivalent air volume, Vas

3.5

 

3.5

 

[lit.]

3, 6

Mechanical resistance, Rms

0.39

 

0.39

 

[Ns/m]

3, 6

Mechanical Q, Qms

7.5

 

7.4

 

[-]

3, 6

Electrical Q, Qes

0.49

 

0.59

 

[-]

3, 6

Total Q, Qts

0.46

 

0.55

 

[-]

4

Voice coil resistance, RDC

3.2

6.5

[ohm]

5

Voice coil inductance, Le (measured at 10 kHz)

0.16

0.28

[mH]

 

Voice coil inside diameter

32

32

[mm]

 

Voice coil winding height

11

11

[mm]

 

Air gap height

5

5

[mm]

 

Theoretical linear motor stroke, Xmax

+/-3

+/-3

[mm]

 

Magnet weight

325

325

[g]

 

Total unit net weight excl. packaging

0.95

0.95

[kg]

3, 5

Krm

1.13

2.06

[mohm]

3, 5

Erm

0.73

0.72

[-]

3, 5

Kxm

2.2

3.5

[mH]

3, 5

Exm

0.74

0.75

[-]

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

WF118WA05/06 outline drawing PDF
WF118WA05_06-outline-dwg

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals-dimensions

PACKAGING AND ORDERING INFORMATION

Part no. WF118WA05-01

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

Part no. WF118WA05-02

4 ohm version, bulk packaging

Part no. WF118WA06-01

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

Part no. WF118WA06-02

8 ohm version, bulk packaging

Latest update: May 28 2014

 

Specifications are subject to change without any further notice.
Copyright © 2006-2018 by Wavecor Ltd., Guangzhou, China. All rights reserved.

 

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MORE INFO

PDF data sheet
(703 KB)

 

 

 

 

 

 

 

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