ES140TiA-8 5-1/2" Esoteric Series Woofer 8 Ohm

Quick Overview

The Dayton Audio ES140TiA-8 is a high-tech 5-1/2" woofer featuring an FEA-optimized neodymium ring motor structure with dual copper shorting rings for ultra-low distortion. Its enormous 3" edge-wound voice coil on a titanium former provides high power handling and excellent transient response.

Product Highlights

  • Now with improved frequency response for easier crossover integration
  • Dual copper shorting rings in the motor for reduced energy storage
  • 3" edgewound voice coil on titanium former provides exceptional transient response
  • Woven glass-fiber cone provides excellent stiffness for minimal cone flex
  • High-power, ultra-low-distortion design

Product Manuals / Spec Sheets / Downloads

Dayton Audio ES140TiA-8 Specification Sheet
Dayton Audio ES140TiA-8 Data Files

Dayton Audios Esoteric Series is the ultimate expression of Dayton Audio’s transducer engineering knowledge and finesse. Featuring high-end materials and advanced engineering throughout, the Esoteric Series collection of drivers elevates the state of the art in driver design. Now with a flatter frequency response and smoother high frequency roll-off allowing for extended bandwidth and easier crossover integration.

Unprecedented performance for a small woofer is packed into 5-1/2" ES140TiA-8, thanks to an FEA-optimized motor assembly using a large neodymium ring magnet and heavy dual copper shorting rings. Dayton Audios Esoteric Series woofer motor geometry is designed to provide a powerful, stable field with excellent saturation and symmetry, expanding the usable range of excursion.

The huge 3" diameter voice coil is edgewound using rectangular copper-coated aluminum wire (CCAW) for maximal winding density within the coil profile, and the ventilated titanium voice coil former transfers energy to the cone with incredible speed while contributing added stiffness to the cone itself. A woven glass-fiber cone couples acoustic energy to the air with excellent stiffness and self-damping, while its shallow profile minimizes cavity resonance. The Klippel-optimized suspension is designed to allow high excursion of the cone without distortion, and the structure of the driver is supported by a fully ventilated cast aluminum frame for supreme mechanical stability without internal compression.

All of these elements combine to create a driver that breaks new ground with superb transient response and ultra-low distortion. By breaking free from established design conventions and rethinking how each part of the driver should behave, the ES140TiA-8 consistently delivers a musically accomplished performance, time after time. It’s an excellent choice as a woofer in a 2-way high-performance loudspeaker system, and the 8-ohm impedance makes it a natural choice for center channel MTM use as well.

Read the review by Vance Dickason from Voice Coil Magazine


Sealed Volume 0.13 ft.³
Sealed F3 77.8 Hz
Vented Volume 0.41 ft.³
Vented F3 41 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations

Speaker Series Esoteric Series
Model Number ES140TiA-8
List Price $159.99
Color Black
Unit of Measure Each
UPC 848791002625
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 2.6
Speaker Type Woofer
Nominal Diameter 5.50"
Power Handling (RMS) 100 watts
Power Handling (max) 200 watts
Continuous Program Power --
Impedance 8 ohms
Sensitivity 84.2 dB @ 2.83V/1m
Frequency Response

45 - 4

100 Hz

Voice Coil Diameter 75 mm
Magnet Weight --
DC Resistance (Re) 6.6 ohms
Voice Coil Inductance (Le) 1.03 mH @ 1 kHz
Resonant Frequency (Fs) 41.7 Hz
Mechanical Q (Qms) 5.84
Electromagnetic Q (Qes) 0.5
Total Q (Qts) 0.46
Diaphragm Mass Inc. Airload (Mms) 20.9g
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) 0.70 mm/N
Surface Area Of Cone (Sd) 98.5 cm²
Volume of Displacement (Vd) 49.3 cm³
BL Product (BL) 8.5 Tm
Compliance Equivalent Volume (Vas) 9.5 liters
Maximum Linear Excursion (Xmax) 5.0 mm
Drivers Mechanical Losses (Rms) --
Cone / Diaphragm Material Nomex Cone
Entry / Exit Diameter --
Surround Material Rubber
Voice Coil Wire Material CCA
Voice Coil Former Titanium
Basket/Frame Material Cast Aluminum
Magnet Material Neodymium
Overall Outside Diameter 152 mm
Overall Depth 66.7 mm
Baffle Cutout Diameter 125.4 mm
# Mounting Holes 6
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --