ND25TA-4 1" Titanium Dome Neodymium Tweeter 4 Ohm

1" titanium dome diaphragm with damped fabric surround

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Compact titanium dome tweeter with high output and smooth response to beyond 22 kHz, for maximum dynamic impact and excellent transient response. The high-strength neodymium motor is equipped with an aluminum heatsink for cool operation and reduced power

The Dayton Audio ND25TA-4 is a versatile 1” titanium-dome tweeter that offers the performance of more expensive tweeters in a compact and stylish package. It features a Dayton Audio exclusive round faceplate design with integral perforated steel grille, and a small yet powerful neodymium motor with attached aluminum heatsink and ferrofluid-filled magnetic gap for reduced power compression and improved long-term power handling. The carefully-designed titanium diaphragm provides clean, crisp treble response to beyond 22kHz, and delivers superb sonic detail and dynamics with low distortion. A copper pole cap further reduces distortion and inductance effects.

Choose the ND25TA-4 when you need maximum dynamic impact and powerfully-rendered sonic detail to keep up with a high-output midrange or woofer. The compact round faceplate design integrates easily into your baffle design without claiming a large amount of real estate, and the integrated grille protects the titanium dome from damage.


• 1" titanium dome diaphragm with damped fabric surround
• Compact round faceplate and protective metal grille
• High-strength neodymium motor with heatsink and ferrofluid cooling
• Smooth and detailed treble response to 22kHz and beyond
• Clean, modern styling and appearance

Speaker Series ND Series
Model Number ND25TA-4
Color Black
Unit of Measure Each
UPC 848791000843
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 0.2000
Speaker Type Tweeter
Power Handling (RMS) 20 watts
Power Handling (max) 40 watts
Continuous Program Power --
Impedance 4 ohms
Sensitivity 91 dB @ 2.83V/1m
Frequency Response 2,900 - 20,000 Hz
Voice Coil Diameter 25 mm
Magnet Weight --
DC Resistance (Re) 3.2 ohms
Voice Coil Inductance (Le) 0.48 mH
Resonant Frequency (Fs) 1,470 Hz
Mechanical Q (Qms) 3.24
Electromagnetic Q (Qes) 2.63
Total Q (Qts) 1.45
Diaphragm Mass Inc. Airload (Mms) --
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) --
Surface Area Of Cone (Sd) 7.5 cm²
Volume of Displacement (Vd) --
BL Product (BL) --
Compliance Equivalent Volume (Vas) --
Maximum Linear Excursion (Xmax) --
Driver's Mechanical Losses (Rms) --
Cone / Diaphragm Material Titanium Dome
Cone / Dome Diameter 1"
Entry / Exit Diameter --
Surround Material Treated Silk
Voice Coil Wire Material Copper
Voice Coil Former Kapton®
Basket/Frame Material --
Magnet Material Neodymium
Overall Outside Diameter 66 mm
Overall Depth 35.9 mm
Baffle Cutout Diameter 45 mm
# Mounting Holes 4
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --
SKU 848791000843
Model # ND25TA-4
Barcode # 848791000843
Brand Dayton Audio
Shipping Weight 0.1000kg
Shipping Width 0.070m
Shipping Height 0.057m
Shipping Length 0.070m
Shipping Cubic 0.000279000m3
Assembled Length 0.070m
Assembled Height 0.057m
Assembled Width 0.070m

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