What's the thread diameter

Pyle Pro follows the standard size for most car stereo systems and created this 1.5-inch midrange / tweeter aluminum horn driver that fits horns with 1 ⅜” x 18 TPI threads

Will this fit my PH391 horn for an upgrade?

As long as it fits, Yes, I don't see a problem. I don't what the size of the original is.

i have a selenium D205TI diaphram which one would replace this for a tweeeter horn

There are some replacement diaphragms on eBay. As the mounting on your unit might be different. From the pyle version .. It uses a single threaded stud for mounting as for your unit might be an Allen wrench mount. I am not too familiar with your loudspeaker but I think the pyle might not mount correctly to it.

Will this fit an Alto ts 15?

The driver Fits Horns with 1 3/8" x 18 TPI Threads

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Pyle 1.5 Inch Tweeter Horn Driver - 500 watt peak power/250 watt RMS Audio Speaker Tweeter System w/ Flat Aluminum Voice Coil, 1.5k-20 kHz Frequency, 95 dB, 8Ohm - Pyle PDS122 , Black

Pyle 1.5 Inch Tweeter Horn Driver - 500 watt peak power/250 watt RMS Audio Speaker Tweeter System w/ Flat Aluminum Voice Coil, 1.5k-20 kHz Frequency, 95 dB, 8Ohm - Pyle PDS122 , Black

Product ID: 1167665

Details

Audio Output Mode
Stereo
Brand
Pyle
Connectivity Technology
cable
Frequency Response
1 KHz
Speaker Maximum Output Power
500 Watts

⚡500W peak power punch

🎵1.5k-20kHz crisp range

🔊95dB clear sound output

Description

🎶 Elevate your sound game — don’t just listen, dominate the vibe!

SEAMLESS COMPATIBILITY - Standard 1.5-inch size with 1 ⅜” x 18 TPI threads fits most car horns and PA systems for effortless upgrades.
BUILT TO LAST PERFORM - Heavy-duty 30 oz magnet and flat aluminum voice coil ensure durability and consistent, powerful sound delivery.
PRECISION AUDIO CLARITY - Experience ultra-wide 1.5kHz to 20kHz frequency response delivering crystal-clear treble that completes your stereo setup.
PLUG PLAY INSTALLATION - Designed for quick, hassle-free mounting with 8 Ohm impedance optimized to reduce distortion in any vehicle or DJ rig.
POWER THAT COMMANDS ATTENTION - Unleash up to 500 watts peak power for booming, distortion-free highs that dominate your soundscape.

The Pyle PDS122 is a high-performance 1.5-inch tweeter horn driver delivering 500 watts peak power and a wide 1.5kHz to 20kHz frequency range. Featuring a durable 30 oz magnet and flat aluminum voice coil, it offers 95 dB SPL clarity with 8 Ohm impedance, fitting standard horn mounts for easy installation in cars, PA systems, and DJ setups. Perfect for professionals seeking crisp, powerful highs and reliable sound upgrade.

Specifications

ASIN	B001588IS2
Additional Features	Speakers
Antenna Location	For Music Players
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#106,822 in Electronics ( See Top 100 in Electronics ) #200 in Car Tweeters
Brand	Pyle
Color	Black
Compatible Devices	Car Audio System, DJ Equipment, Karaoke Machine, Smart Speaker, Smartphone
Compatible with Vehicle Type	Car
Connectivity Protocol	Wiring
Connectivity Technology	cable
Control Method	Remote
Controller Type	Remote Control
Customer Package Type	FFP
Customer Reviews	4.1 out of 5 stars 357 Reviews
EU Spare Part Availability Duration	7 Years
Enclosure Material	Aluminum
Frequency Response	1 KHz
Global Trade Identification Number	00068888888479, 00182682349971
Impedance	8 Ohms
Is Electric	Yes
Is Waterproof	False
Item Dimensions D x W x H	3.75"D x 3.75"W x 2.88"H
Item Type Name	Pyle
MP3 player	No
Manufacturer	Sound Around Inc.
Model Name	Sound Around
Model Number	PDS122
Mounting Type	Floor Standing
Number Of Circuits	1
Number of Audio Channels	2.1
Number of Items	1
Number of Power Levels	1
Power Source	Corded Electric
Series Number	122
Speaker Maximum Output Power	500 Watts
Speaker Size	5 Inches
Speaker Type	Tweeter
Specific Uses For Product	personal musical entertainment
Subwoofer Connectivity Technology	Wired
Tweeter Diameter	1.5 Inches
UPC	068888888479 182682349971
Unit Count	1.0 Count
Warranty Description	1-year.
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	1.5 Inches

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