Which lead is positive and negative?

The side with the bass resistor is positive

What’s the outside diameter of the speaker?

4 inches is too big...due to the ears on the back it is tricky to get it right. They are front mount only. I think I went with 3 and 3/4 but still had to notch it due to the ears.

Can I put them on my Harley??

Listen these tweeters are BADASS they are built tough look good and the Highs they put out are outstanding. I put these on the front doors of my 2003 Chevy Blazer and was really kind of worried because of the price being under $50.00 bucks. But Bro let me say you will not be disappointed. As far as your Harley they are not really 4" they are more like 3.5" so I had to use these spacers (uxcell 4 Pcs Black Plastic Car 4 Inch Inner Dia Speaker Spacers Replacement) so I hope this helps you out good luck

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Timpano Audio TPT-ST2-Black 4 Super Tweeter Pair"

Timpano Audio TPT-ST2-Black 4 Super Tweeter Pair"

Product ID: 745479358

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Details

Brand
Timpano
Speaker Maximum Output Power
600 Watts
Connectivity Technology
wired
Audio Output Mode
Stereo
Mounting Type
car mount

⚡4 Ohm impedance for efficient performance

📏1.4" ultra-slim mounting depth

🔊60W peak power output

Description

🎶 Elevate your soundscape with Timpano’s super slim sonic precision!

POWERFUL PRECISE - Delivers 60 watts of clean, distortion-free output to elevate your audio game.
BUILT IN CROSSOVERS - Integrated capacitors filter out damaging low frequencies for pristine super tweeter performance.
CRYSTAL CLEAR HIGHS - Experience ultra-clear, piercing highs that cut through any high SPL environment.
SLEEK SLIM DESIGN - Compact 3.8" round tweeters with a minimal 1.4" mounting depth fit seamlessly in any setup.
VERSATILE COMPATIBILITY - Perfectly pairs with smartphones, tablets, desktops, and more for immersive surround sound.

The Timpano Audio TPT-ST2-Black is a high-performance 3.8" super tweeter pair designed for ultra-clear high-frequency output. Featuring a slim 1.4" mounting depth and built-in capacitors to eliminate low-end distortion, it delivers 60 watts of powerful, distortion-free sound. Compatible with a wide range of devices, this sleek aluminum tweeter set is perfect for audiophiles seeking crisp, immersive surround sound in compact spaces.

Specifications

Material	Aluminum
Model Name	ST2 BLACK 3.85"
Speaker Type	Tweeter
Special Feature	Surround Sound
Recommended Uses For Product	Volume:
Compatible Devices	Smartphones, Tablets, MP3 players, Desktops, TVs, Projectors, Laptops
Subwoofer Diameter	4 Inches
Surround Sound Channel Configuration	2.0
Color	Black
Included Components	Tweeter
Product Dimensions	3.5D x 9.8W x 9.8H cm
Item Weight	975 g
Impedance	4 Ohm
Is Waterproof	False
Warranty Type	Limited
Number of Items	1
Control Method	Touch
Speaker Size	4 Inches
Power Source	12V
Batteries Required	No
Battery Average Life	1 Hours
Speaker Count	2
Manufacturer	Timpano Audio
Item Model Number	ST2 BLACK 3.85"
Size	3.85'
Output Wattage	60 Watts
Wattage	480 W

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