New $5 each, Lightly used $7/pr, $20/for10, $50/for30. Nice reviews. You pay shipping.
Used to validate a mid-range line design. These were since replaced with large ribbon mid lines, hence no longer needed.)
Specs follow pix.
PM: ralph james at bell south dot net, no spaces.
Link with reviews:
https://www.parts-express.com/4-Treated-Paper-Cone-Woofer-16-Ohm-299-320
Product Details:
Brand Factory Buyouts
Parts Express Part Number 299-320
UPC 848864046358
Unit of Measure Each
Weight 1.25
Product Specifications
Nominal Diameter 4"
Bolt Circle Diameter 4.325
Moving Mass Of Diaphragm (Mmd) 3.18
Power Handling (RMS) 20 Watts
Power Handling (MAX) 40 Watts
Impedance 16Ω
Frequency Response 90 to 8,000Hz
Sensitivity 86.95dB 2.83V/1m
Voice Coil Diameter 1"
Thiele-Small Parameters
Resonant Frequency (Fs) 107Hz
DC Resistance (Re) 11.89Ω
Voice Coil Inductance (Le) 0.97mH
Mechanical Q (Qms) 2.48
Electromagnetic Q (Qes) 1.1
Total Q (Qts) 0.76
Compliance Equivalent Volume (Vas) 0.099ft³
Mechanical Compliance of Suspension (Cms) 0.694mm/N
BL Product (BL) 4.81T·m
Maximum Linear Excursion (Xmax) 1mm
Surface Area of Cone (Sd) 53.47cm²
Materials of Construction
Cone Material Treated Paper
Surround Material Cloth
Voice Coil Wire Material Copper
Voice Coil Former Aluminum
Basket / Frame Material Steel
Magnet Material Ferrite
Mounting Information
Overall Outside Diameter 4.75"
Baffle Cutout Diameter 3.625"
Depth 1.875"
# Mounting Holes 4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
Sealed Volume 0.18ft³
Sealed F3 123Hz
Vented Volume 0.35ft³
Vented F3 65Hz
Used to validate a mid-range line design. These were since replaced with large ribbon mid lines, hence no longer needed.)
Specs follow pix.
PM: ralph james at bell south dot net, no spaces.
Link with reviews:
https://www.parts-express.com/4-Treated-Paper-Cone-Woofer-16-Ohm-299-320
Product Details:
Brand Factory Buyouts
Parts Express Part Number 299-320
UPC 848864046358
Unit of Measure Each
Weight 1.25
Product Specifications
Nominal Diameter 4"
Bolt Circle Diameter 4.325
Moving Mass Of Diaphragm (Mmd) 3.18
Power Handling (RMS) 20 Watts
Power Handling (MAX) 40 Watts
Impedance 16Ω
Frequency Response 90 to 8,000Hz
Sensitivity 86.95dB 2.83V/1m
Voice Coil Diameter 1"
Thiele-Small Parameters
Resonant Frequency (Fs) 107Hz
DC Resistance (Re) 11.89Ω
Voice Coil Inductance (Le) 0.97mH
Mechanical Q (Qms) 2.48
Electromagnetic Q (Qes) 1.1
Total Q (Qts) 0.76
Compliance Equivalent Volume (Vas) 0.099ft³
Mechanical Compliance of Suspension (Cms) 0.694mm/N
BL Product (BL) 4.81T·m
Maximum Linear Excursion (Xmax) 1mm
Surface Area of Cone (Sd) 53.47cm²
Materials of Construction
Cone Material Treated Paper
Surround Material Cloth
Voice Coil Wire Material Copper
Voice Coil Former Aluminum
Basket / Frame Material Steel
Magnet Material Ferrite
Mounting Information
Overall Outside Diameter 4.75"
Baffle Cutout Diameter 3.625"
Depth 1.875"
# Mounting Holes 4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
Sealed Volume 0.18ft³
Sealed F3 123Hz
Vented Volume 0.35ft³
Vented F3 65Hz
