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Where the figures for AMT2-4 come from

I take every figure from Dayton Audio's own product page or datasheet where I can. This lists where each figure on the AMT2-4 page came from.

• 16 from Dayton Audio's product page
• 2 from Dayton Audio's datasheet
• 1 not yet checked
• 3 from NB Audio's listing

General

Driver type	Tweeter	NB Audio's listing
Nominal size	1.5"	NB Audio's listing
Nominal impedance	4Ω	Maker's product page
Series	AMT	NB Audio's listing
Power handling (RMS)	15 W	Maker's product page
Power handling (program)	30 W	Maker's product page
Sensitivity	92.5 dB	Maker's product page
Frequency range	2,500 – 22,000 Hz	Maker's product page

Thiele/Small parameters

Resonant frequency (Fs)	2,300 Hz	My earlier listing, not yet checked
DC resistance (Re)	3.5 Ω	Maker's product page
Mechanical Q (Qms)	2.92	Maker's product page
Total Q (Qts)	2.86	Maker's product page
Effective piston area (Sd)	8.91 cm²	Maker's product page

Mounting

Overall diameter	90 mm	Maker's product page
Cutout diameter	65 mm	Maker's product page
Mounting depth	28.5 mm	Maker's product page
Flange thickness	5 mm	Maker's datasheet
Bolt circle diameter	82 mm	Maker's datasheet
Mounting holes	4	Maker's product page
Weight	0.3402 kg	Maker's product page

Materials

Cone	Kapton	Maker's product page
Magnet	Neodymium	Maker's product page

Not on file: Vas, Xmax, Le, Bl, Mms. Either the maker doesn't publish it or I haven't found it yet.

What the labels mean

• Maker's product page: copied from the maker's product page.
• Maker's datasheet: read off the maker's own datasheet or drawing.
• My earlier listing, not yet checked: from the listing I had before I started checking figures against makers. Treat it as a guide until it's checked.
• NB Audio's listing: how I've filed it in the store.

Check them yourself: Dayton Audio AMT2-4 Specification Sheet