Expert Service 1-877-289-7664 [Hours]

Cyber Monday Sale

Legacy LT18

1" Super Titanium Tweeter with 3-1/4" Aluminum Bullet Horn


We apologize

This item has been discontinued

Item Added to Cart

Legacy LT18

1" Super Titanium Tweeter with 3-1/4" Aluminum Bullet Horn


Keep Shopping

Dynamat Xtreme Wedge Pak

Just enough Dynamat to install around tweeters and speakers.


Universal Window Handle Remover

Remove your manual windows and door panels with this simple and convenient tool.



Don't see the accessory you're looking for?
View all available accessories for the Legacy LT18.

Get FAST answers from customers ASK a Question See questions answers

Product Features:

  • 1" Super Titanium Tweeter with 3-1/4" Aluminum Bullet Horn American Series 2
  • Power Handling:
    • Peak: 300 watts
  • 1" High Temperature Kapton Voice Coil
  • High Efficiency Titanium Diaphragm
  • Ferro Fluid Enhanced
  • Impedance: 4/8 Ohm
  • 20oz. Magnet
  • Frequency Response: 2000-25000Hz
  • Sensitivity: 96 dB
  • Top Mount Depth: 1-9/16"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Tweeter Specifications

Priced Per
Car Tweeters are typically sold in pairs so you will receive 2 tweeters for each purchase on tweeters marked "Priced Per Pair". If a tweeter is marked "Priced Per Each" then the tweeter is sold individually and each purchase you make will result in 1 tweeter. High-powered tweeters are typically sold per each tweeter.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
300 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
96 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
2000 - 25000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 or 8 ohms

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

The Carpenter

Salem, Indiana

Great sounding tweeters!

September 19, 2013

So much value for the money. These tweeters have a bright, clear sound. I plan to buy a few more just in case I blow one, but so-far they are holding up just fine( I am pretty rough on tweeters). If you are looking for inexpensive tweeters that sound great, look no further, you just found them!

13 of 23 found this helpful

Was this review helpful to you?



lt 18 tweeters

September 17, 2013

I bought these to bring the mids and highs out of my 18" subs. the highs cut right through, not to over bearingly. mids sound just right. I am very happy with this product.

8 of 19 found this helpful

Was this review helpful to you?


Maple Valley, WA

These things scream!

August 31, 2012

They really give my system that missing crispness in the high end. Extremely satisfied.

9 of 22 found this helpful

Was this review helpful to you?

Accessory Tools and Products

Accessories added

Dynamat Xtreme Wedge Pak

Just enough Dynamat to install around tweeters and speakers.

Your Price $29.95

Universal Window Handle Remover

Remove your manual windows and door panels with this simple and convenient tool.

Your Price $9.99

Door Panel & Upholstery Remover Tool

Easily remove your door panels and other panels to make the installation of your new tweeters easy.

Your Price $5.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Items we think you might want
SP-4 main

1" High Efficiency Niobium Micro Dome Tweeter • 250W Peak • 125W RMS • Polypropylene Diaphragm • Built-In Crossover • Surface or Angle Mountable • Niobium Rare Earth Ferroelectric Transducer Magnet

Your Price $9.99

T.2 main
Precision Power PPI T.2

1" Niobium Micro Dome Car Tweeters • 100 Watts Max • 50 Watts RMS • Polypropylene Diaphragm • Surface and Angle Mounting

Your Price $10.99

Browse 2 questions and 6 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
great sound quality great price
Richard H on Aug 30, 2015
sound great
Philip W on Sep 16, 2014
Just liked it
Emmanuel A on Jan 5, 2015
do these require a xover?
Scott on Aug 11, 2014
Best Answer: Hello,

The tweeter is designed to , theoretically, not allow anything below 2000Hz to pass through. However, we highly recommend taking the extra precaution and adding in your own Passive Crossover or making sure to set your crossover properly at the amp.
Reply · Report · Customer SStaff on Aug 13, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number






Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Legacy LT18