--- product_id: 396716669 title: "Selenium ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet" brand: "selenium" price: "€ 372.84" currency: EUR in_stock: true url: https://www.desertcart.be/products/396716669-selenium-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite store_origin: BE region: Belgium --- # Precise 40°x40° dispersion 300W max power handling Aluminum + diamond-machined base Selenium ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet **Brand:** selenium **Price:** € 372.84 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your sound game with pinpoint clarity and power-packed performance! ## Quick Answers - **What is this?** Selenium ST400TRIO 8 Ohm Super Frequency Tweeter with Barium Ferrite Magnet by selenium - **How much does it cost?** € 372.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/396716669-selenium-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite) ## 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 - • **Powerhouse Performance:** Handles up to 300 Watts with ease, ensuring your sound system never misses a beat. - • **Versatile Setup Options:** Use solo for intimate setups or array multiple units for stadium-level sound coverage. - • **Precision Sound Coverage:** Bullet-shaped horn delivers a focused 40° x 40° throw for immersive audio reach. - • **Durable & Efficient Build:** Aluminum base with diamond machining for superior heat dissipation and longevity. - • **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 reproduction. Featuring a durable aluminum and diamond-machined base for optimal heat dissipation, a phenolic diaphragm for natural sound, and a bullet-shaped horn for precise 40° x 40° dispersion, it supports up to 300 Watts of power. Ideal for both individual use in low-power systems and scalable arrays in professional setups, it ensures high-definition sound with efficient magnetic design and quick coupling connectors. ## 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 | | 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 | | Connectivity technology | wired | | Control Method | App | | Controller Type | ring | | Enclosure Material | Aluminum | | Frequency Response | 20000 Hz | | 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 | | 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 | | Speaker maximum output power | 300 Watts | | 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 ![Selenium 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.be/products/396716669-selenium-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite](https://www.desertcart.be/products/396716669-selenium-st400trio-8-ohm-super-frequency-tweeter-with-barium-ferrite) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-30*