Quick Overview With high excursion capabilities and low Fs, Dayton Audios TCP115-4 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. Product Highlights Aluminum former keeps voice coil cool for high power handling 1" diameter 4-layer voice coil improves power handling and low frequency response Extended pole piece creates symmetrical magnetic field for lower distortion Cosmetic low-profile mounting flange looks good without flush mounting Powerful motor for efficiency and compact enclosure Product Manuals / Spec Sheets / Downloads Dayton Audio TCP115-4 Specification Sheet Dayton Audio TCP115-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description The TCP115-4 combines a large motor, 1" 4-layer voice coil, vented pole and a sizable rubber surround to make use of its 4 mm of x-max. 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. Product Details Model Number TCP115-4 List Price $18 Color Black Unit of Measure Each UPC 848791004629 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 2 Speaker Type Woofer Nominal Diameter 4" Power Handling (RMS) 40 watts Power Handling (max) 80 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 86.8 dB @ 2.83V/1m Frequency Response 55 - 5 000 Hz Voice Coil Diameter 1" Magnet Weight -- DC Resistance (Re) 3.2 ohms Voice Coil Inductance (Le) 0.97 mH Resonant Frequency (Fs) 53.8 Hz Mechanical Q (Qms) 3.14 Electromagnetic Q (Qes) 0.4 Total Q (Qts) 0.35 Diaphragm Mass Inc. Airload (Mms) 9.9 g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.88 mm/N Surface Area Of Cone (Sd) 50.3 cm² Volume of Displacement (Vd) 20.1 cm³ BL Product (BL) 5.2 Tm Compliance Equivalent Volume (Vas) 3.1 liters Maximum Linear Excursion (Xmax) 4.0 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Treated Paper Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material CCAW Voice Coil Former Aluminum Basket/Frame Material Steel Magnet Material Ferrite Overall Outside Diameter 4.57" Overall Depth 2.56" Baffle Cutout Diameter 3.66" # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --