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These Driver were tested in a IEC baffle 
 
The Wavecor WF168WA05 is a 6-1/2" glass fiber cone midwoofer that is designed for demanding bass and midrange applications. The WF168WA05 is a very good choices for 2-way speaker systems or even as midrange in 3-way systems.
Key Features
Vented voice coil former for reduced distortion and compression
Gold plated terminals to prevent oxidation, for long-term reliable connection
Built-in aluminum field-stabilizing ring for reduced high-level distortion
Large motor structure for better control and power handling
Black magnet parts for better heat transfer to increase power handling
New vented chassis for lower air flow speed reducing audible distortion
Progressive suspension with specially designed conex spider for long durability under extreme operating conditions
Product Details
Brand
Wavecor
Model
WF168WA05
Part Number
298-1192
UPC
848864054971
Unit of Measure
Each
Weight
2.65
Product Specifications
Nominal Diameter
6-1/2"
Power Handling (RMS)
60 Watts
Power Handling (MAX)
120 Watts
Impedance
4Ω
Frequency Response
60 to 3,000Hz
Sensitivity
91dB 2.83V/1m
Voice Coil Diameter
1.26"
Thiele-Small Parameters
Resonant Frequency (Fs)
40Hz
DC Resistance (Re)
3.2Ω
Voice Coil Inductance (Le)
0.24mH
Mechanical Q (Qms)
7.2
Electromagnetic Q (Qes)
0.45
Total Q (Qts)
0.42
Compliance Equivalent Volume (Vas)
0.98ft³
Mechanical Compliance of Suspension (Cms)
1.14mm/N
BL Product (BL)
5T·m
Diaphragm Mass Inc. Airload (Mms)
14g
Maximum Linear Excursion (Xmax)
3mm
Surface Area of Cone (Sd)
131cm²
Materials of Construction
Cone Material
Fiberglass
Voice Coil Wire Material
Aluminum
Voice Coil Former
Fiberglass
Basket / Frame Material
Cast Aluminum
Mounting Information
Overall Outside Diameter
6.61"
Baffle Cutout Diameter
5.63"
Depth
2.87"
# Mounting Holes
4
 Recommended Enclosure Volume
Sealed Volume
0.38ft³
Sealed F3
75.6Hz
Vented Volume
0.8ft³
Vented F3
42.4Hz