AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm

Advanced Air Motion Transformer design "squeezes" air mo

8-14 days

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The Dayton Audio AMTPRO-4 Air Motion Transformer is designed for professional audio and demanding high-fidelity applications in which high SPL demands combine with the need for detailed reproduction and musical finesse.

Dayton Audio's AMTPRO-4 model features an extremely large AMT diaphragm with an open-back design and powerful neodymium magnetic assembly. This combination produces high output and low distortion over a broad frequency range, while handling large amounts of amplifier power.

Perfect for use in PA loudspeakers, large-format studio monitors, custom cinema speakers, or extreme performance hi-fi loudspeakers, the AMTPRO-4 can easily be chamber-loaded or open-baffle loaded as required by a particular application. Thanks to its ability to be crossed over as low as 800 Hz, the AMTPRO-4 driver is a uniquely effective solution for midrange reproduction as well as treble, and can even be used as a wide-bandwidth “mid-tweeter” driver.

Dayton Audio AMT (Air Motion Transformer) tweeters borrow technology from the original ESS/Heil Air Motion Transformer to provide ultra-clean, detailed, and dynamic treble output. The pleated ribbon diaphragm of an AMT provides a large acoustic radiating area condensed into a compact chassis, for extremely high SPL output, wide bandwidth, and improved power handling.

Specifications: Dimensions: Overall: 7.87" H x 3.94" W, Cutout: 6.77" H x 2.83" W, Depth: 1.42".


• Advanced Air Motion Transformer design "squeezes" air molecules instead of shoving or crushing them
• Folded Kapton ribbon diaphragm delivers clean, detailed, and highly dynamic output
• Robust metal faceplate provides secure, stable mounting
• Powerful, lightweight neodymium magnet structure for low distortion and high efficiency
• Open back design permits dipole or chamber loading
• Pro-level output and ruggedness for PA boxes, studio monitors, or high-efficiency home playback

Speaker Series AMT Series
Model Number AMTPRO-4
Color Black
Unit of Measure Each
UPC 848791000645
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 2.6500
Speaker Type Tweeter
Power Handling (RMS) 50 watts
Power Handling (max) 100 watts
Continuous Program Power --
Impedance 4 ohms
Sensitivity 94 dB 1W/1m
Frequency Response 800 - 18,000 Hz
Voice Coil Diameter --
Magnet Weight --
DC Resistance (Re) 3.96 ohms
Voice Coil Inductance (Le) 0.06 mH @ 10k Hz
Resonant Frequency (Fs) --
Mechanical Q (Qms) --
Electromagnetic Q (Qes) --
Total Q (Qts) 4.12
Diaphragm Mass Inc. Airload (Mms) --
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) --
Surface Area Of Cone (Sd) 54.72 cm²
Volume of Displacement (Vd) --
BL Product (BL) --
Compliance Equivalent Volume (Vas) --
Maximum Linear Excursion (Xmax) --
Driver's Mechanical Losses (Rms) --
Entry / Exit Diameter --
Surround Material --
Voice Coil Wire Material --
Voice Coil Former --
Basket/Frame Material --
Magnet Material --
Overall Outside Diameter 100 mm x 200 mm
Overall Depth 36 mm
Baffle Cutout Diameter 72 mm x 172 mm
# Mounting Holes 4
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --

SKU 848791000645
Model # AMTPRO-4
Barcode # 848791000645
Brand Dayton Audio
Shipping Weight 1.2020kg
Shipping Width 0.152m
Shipping Height 0.076m
Shipping Length 0.254m
Shipping Cubic 0.002950000m3
Assembled Length 0.254m
Assembled Height 0.076m
Assembled Width 0.152m

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