5 out of 5
Dayton Audio TCP115-8 4" Treated Paper Cone Midbass Woofer 8 Ohm
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Pricing Note
Product Description
Manufacturer Part Number: TCP115-8
With high excursion capabilities and low Fs, Dayton Audio's TCP115-8 can produce a surprising amount of bass for a 4" woofer. In addition to its low frequency performance, this driver also performs very well through the midrange, making this driver ideal for use in smaller 2-way designs.
Key Features:
Overview:
Dayton Audio TCP115-8 4" Treated Paper Cone Midbass Woofer 8 Ohm
The TCP115-8 combines a large motor, 1" 4-layer voice coil, vented pole, and a sizable rubber surround to make use of its 4 mm of Xmax. This combination of features makes it a very versatile driver which can be used as a bass driver in a small 2-way system, center channel, or even portable Bluetooth speaker designs.
Specification:
Manuals & Resources:
With high excursion capabilities and low Fs, Dayton Audio's TCP115-8 can produce a surprising amount of bass for a 4" woofer. In addition to its low frequency performance, this driver also performs very well through the midrange, making this driver ideal for use in smaller 2-way designs.
Key Features:
- Powerful motor for efficiency and compact enclosure
- 1" diameter 4-layer voice coil improves power handling and low frequency response
- Aluminum former keeps voice coil cool for high power handling
- Extended pole piece creates symmetrical magnetic field for lower distortion
- Cosmetic low-profile mounting flange looks good without flush mounting
Overview:
Dayton Audio TCP115-8 4" Treated Paper Cone Midbass Woofer 8 Ohm
The TCP115-8 combines a large motor, 1" 4-layer voice coil, vented pole, and a sizable rubber surround to make use of its 4 mm of Xmax. This combination of features makes it a very versatile driver which can be used as a bass driver in a small 2-way system, center channel, or even portable Bluetooth speaker designs.
Specification:
Product Details | |
|---|---|
| Brand | Dayton Audio |
| Model | TCP115-8 |
| Part Number | 295-416 |
| UPC | 848791004971 |
| Unit of Measure | Each |
| Weight | 2 |
Product Specifications | |
|---|---|
| Nominal Diameter | 4" |
| Bolt Circle Diameter | 4.25 |
| Power Handling (RMS) | 40 Watts |
| Power Handling (MAX) | 80 Watts |
| Impedance | 8Ω |
| Frequency Response | 55 to 6,000Hz |
| Sensitivity | 81.9dB 2.83V/1m |
| Voice Coil Diameter | 1" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 59.2Hz |
| DC Resistance (Re) | 7.8Ω |
| Voice Coil Inductance (Le) | 1.9mH |
| Mechanical Q (Qms) | 2.3 |
| Electromagnetic Q (Qes) | 0.54 |
| Total Q (Qts) | 0.43 |
| Compliance Equivalent Volume (Vas) | 0.09ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.71mm/N |
| BL Product (BL) | 7.4T·m |
| Diaphragm Mass Inc. Airload (Mms) | 10.16g |
| Maximum Linear Excursion (Xmax) | 4mm |
| Surface Area of Cone (Sd) | 50cm² |
Materials of Construction | |
|---|---|
| Cone Material | Treated Paper |
| Surround Material | Rubber |
| Voice Coil Wire Material | CCA |
| Voice Coil Former | Aluminum |
| Basket / Frame Material | Steel |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 4.57" |
| Baffle Cutout Diameter | 3.77" |
| Depth | 2.32" |
| # Mounting Holes | 4 |
Parts Express Staff Recommended Enclosure Volume | |
|---|---|
| Sealed Volume | 0.06ft³ |
| Sealed F3 | 127Hz |
| Vented Volume | 0.13ft³ |
| Vented F3 | 46Hz |
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.
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Customer Reviews
By Philip Nguyen
Date: November 24, 2025
Did a diy speaker works great for bass.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By Tammy McGee
Date: September 30, 2025
2004 LX470 rear door replacement speakers. Just the right size (4.5 inches outside diameter - an unusual size). I replaced the blown Mark Levinson amp with car amp that has Bluetooth so I needed 4 ohm speakers to replace the 8 ohm factory speakers. These fit great, no cutting required. I did need to drill 2 holes in the old speaker mount and add 2 screws. They sound much better than I expected for their size. I kept the old ML tweeters in place and wired them in also.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By Henri J
Date: August 23, 2025
Bought this 4" driver for diy "boombox", istalled to eclosure with 2pcs 4" chinese passive radiators, they are very light. Im currently using zk21-tb - amp's sub out for driver, tested also with L/R - output. Sound quality is fine/good for the price. Driver can't play high volume with low keys, distortion appears very quickly. I think over all quality is great, will buy more later.
Rating: [4 of 5 Stars!]
[4 of 5 Stars!]
By Gustavo T.
Date: July 31, 2025
Excelente
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Malcom winters
Date: July 14, 2025
It works amazing and has very low bass for it's size
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By roger smoot
Date: May 08, 2025
the speaker wok good sound good in my speaker box
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]