5 out of 5
Pricing Note
Product Description
Manufacturer Part Number: W4-1720
The W4-1720 4" midbass features a long throw, underhung 1-1/4" voice coil driven by a massive ferrite magnet structure.
Overview:
Tang Band W4-1720 4" Underhung Midbass Driver
A shorting ring on the polepiece is responsible for the speaker's extremely low levels of second and third order harmonic distortion. This impressive motor is coupled to an optimized paper cone with rubber surround, supported by a cast aluminum frame.
Specification:
Manuals & Resources:
The W4-1720 4" midbass features a long throw, underhung 1-1/4" voice coil driven by a massive ferrite magnet structure.
Overview:
Tang Band W4-1720 4" Underhung Midbass Driver
A shorting ring on the polepiece is responsible for the speaker's extremely low levels of second and third order harmonic distortion. This impressive motor is coupled to an optimized paper cone with rubber surround, supported by a cast aluminum frame.
Specification:
Product Details | |
|---|---|
| Brand | Tang Band |
| Model | W4-1720 |
| Part Number | 264-872 |
| UPC | 844632069604 |
| Unit of Measure | Each |
| Weight | 4.1 |
Product Specifications | |
|---|---|
| Nominal Diameter | 4" |
| Power Handling (RMS) | 30 Watts |
| Power Handling (MAX) | 60 Watts |
| Impedance | 4Ω |
| Frequency Response | 60 to 8,000Hz |
| Sensitivity | 86dB 2.83V/1m |
| Voice Coil Diameter | 1.25" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 60Hz |
| DC Resistance (Re) | 3.8Ω |
| Voice Coil Inductance (Le) | 0.04mH |
| Mechanical Q (Qms) | 2.33 |
| Electromagnetic Q (Qes) | 0.51 |
| Total Q (Qts) | 0.42 |
| Compliance Equivalent Volume (Vas) | 0.21ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.13mm/N |
| BL Product (BL) | 3.82T·m |
| Diaphragm Mass Inc. Airload (Mms) | 5g |
| Maximum Linear Excursion (Xmax) | 5mm |
| Surface Area of Cone (Sd) | 57cm² |
Materials of Construction | |
|---|---|
| Cone Material | Paper |
| Surround Material | Rubber |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 4.95" |
| Baffle Cutout Diameter | 3.75" |
| Depth | 3.25" |
| # Mounting Holes | 4 |
Parts Express Staff Recommended Enclosure Volume | |
|---|---|
| Sealed Volume | 0.15ft³ |
| Sealed F3 | 114.6Hz |
| Vented Volume | 0.2ft³ |
| Vented F3 | 59.7Hz |
Manuals & Resources:
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Need more information?
Our staff are available to answer any questions you may have about this item
Our staff are available to answer any questions you may have about this item
Customer Reviews
By J. Wright
Date: December 06, 2025
I used the W3 Tang Band drivers in Klipsch Promedia satellites. Pleasantly surprised that they sound better than originals. Well made little speakers. Since the voice coils are slightly larger, the crossover board had to be angled away by only using one mounting screw. Doesn't seem to be a problem. Mounting holes on drivers were tight fit but worked without enlarging. Very happy with these speakers. Money well spent.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
Items 1 - 1 of 1 reviews
1