---
product_id: 396716669
title: "ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet"
brand: "selenium"
price: "729.19 DT"
currency: TND
in_stock: true
category: "Selenium"
url: https://www.desertcart.tn/products/396716669-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite-magnet
store_origin: TN
region: Tunisia
---

# 40°x40° precise sound dispersion 300W max program power Aluminum + diamond-machined heat dissipation ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet

**Brand:** selenium
**Price:** 729.19 DT
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game with precision and power — don’t just hear it, feel it!

## Quick Answers

- **What is this?** ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet by selenium
- **How much does it cost?** 729.19 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/396716669-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite-magnet)

## Best For

- selenium enthusiasts

## Why This Product

- Trusted selenium brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Power Handling:** Supports up to 300W with crossover, ideal for both solo setups and powerful arrays.
- • **Durable Phenolic Diaphragm:** Natural, long-lasting sound quality that outperforms metallic alternatives.
- • **Advanced Thermal Management:** Aluminum base with diamond machining maximizes heat dissipation for reliable performance.
- • **Precision Bullet Horn Design:** 40°x40° dispersion ensures focused, long-throw sound coverage for immersive listening.
- • **Crystal-Clear High Frequencies:** Experience ultra-detailed sound without harshness, perfect for audiophile-grade clarity.

## Overview

The Selenium ST400TRIO is a high-performance 8 Ohm super tweeter designed for exceptional clarity and detail in high-frequency audio. Featuring a durable phenolic diaphragm, a bullet-shaped horn for 40°x40° sound dispersion, and advanced aluminum construction with diamond machining for superior heat dissipation, it handles up to 300 Watts program power. Ideal for both individual use in low-power systems and scalable arrays in professional setups, it delivers natural, harshness-free sound with reliable efficiency.

## Description

Super tweeter for outstanding detail & clarity in high-frequencies without harshness. The St400 TRIO may be used individually in lower power systems or arrayed for increased coverage & SPL in higher power systems. The base & diffuser are constructed of aluminum contributes to better heat dissipation of the coil moves, w/finish machining of diamond (diamond tool) & varnished. The bullet-shape horn design offers a longer throw 40 Degrees x 40 Degrees dispersion. The phenolic annular diaphragm is long-lasting, cost-effective & more natural-sounding than metallic diaphragms. The use of high-temperature materials & adhesives improves power handling & produces exceptionally high acoustic output. Together w/magnetic ring of aluminum ensuring a high-definition & efficiency across its fixed playback. Connectors w/quick couplings * Nominal impedance: 8 ohms * Minimum impedance at 9,400 Hz: 7.8 ohms * Frequency response at -10 dB: 4,000 to 20,000 Hz * 40 x 40 degrees sound dispersion * Recommended maximum program power while using crossover at 8000 Hz: 300 Watts * Recommended maximum program power while using crossover at 5000 Hz: 200 Watts * Diaphragm material: Phenolic * Voice coil diameter:.42 (1.6) mm (in)

## Features

- Super tweeter for outstanding detail & clarity in high-frequencies without harshness. The St400 TRIO may be used individually in lower power systems or arrayed for increased coverage & SPL in higher power systems. The base & diffuser are constructed of aluminum contributes to better heat dissipation of the coil moves, w/finish machining of diamond (diamond tool) & varnished.
- The bullet-shape horn design offers a longer throw 40 Degrees x 40 Degrees dispersion. The phenolic annular diaphragm is long-lasting, cost-effective & more natural-sounding than metallic diaphragms.
- The use of high-temperature materials & adhesives improves power handling & produces exceptionally high acoustic output. Together w/magnetic ring of aluminum ensuring a high-definition & efficiency across its fixed playback. Connectors w/quick couplings
- * Nominal impedance: 8 ohms * Minimum impedance at 9,400 Hz: 7.8 ohms * Frequency response at -10 dB: 4,000 to 20,000 Hz * 40 x 40 degrees sound dispersion
- * Recommended maximum program power while using crossover at 8000 Hz: 300 Watts * Recommended maximum program power while using crossover at 5000 Hz: 200 Watts * Diaphragm material: Phenolic * Voice coil diameter:.42 (1.6) mm (in)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XGR65FV |
| Additional Features | Durable, Lightweight |
| Age Range Description | Adult |
| Antenna Location | vehicle sound systems |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Battery Average Life | 10 Hours |
| Brand | Selenium |
| Built-In Media | Connectors with quick couplings |
| Compatible Devices | Television |
| Connectivity Protocol | Ethernet |
| Connectivity Technology | wired |
| Control Method | App |
| Controller Type | ring |
| Enclosure Material | Aluminum |
| Frequency Response | 20000 Hz |
| Impedance | 8 Ohms |
| Is Waterproof | False |
| Item Dimensions D x W x H | 15.2D x 11.9W x 14H centimeters |
| Item Weight | 3.73 Pounds |
| MP3 player | No |
| Manufacturer | DEEJAYLED |
| Model Name | JBL SUPER HIGH FREQUENCY TWEETER |
| Model Number | ST400TRIO |
| Mounting Type | Magnetic Mount |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 300 Watts |
| Speaker Size | 1.6 Inches |
| Speaker Type | Tweeter |
| Specific Uses For Product | vehicle sound systems |
| Subwoofer Diameter | 12 Inches |
| Tweeter Diameter | 1.6 Inches |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Selenium
- **Connectivity technology:** wired
- **Frequency response:** 20000 Hz
- **Speaker maximum output power:** 300 Watts

## Images

![ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet - Image 1](https://m.media-amazon.com/images/I/61lbj7jZ28L.jpg)

## Frequently Bought Together

- Selenium ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet
- Stetsom STX 2448 DSP PRO - Digital Signal Processor, DSP PRO, Equalizer, High Precision Crossover, Filters, Limiter, Digital Audio Processor 2.4, 2 inputs & 4 outputs
- Taramps TS 400x4 400 watts RMS 4 Channels Full Range Car Audio Amplifier, 2 Bridged Channels, RCA Input Class D, Output Power, Multichannel Amplifier System, Small - TS400X4

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/396716669-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite-magnet](https://www.desertcart.tn/products/396716669-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite-magnet)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-12*