ST-6

491 US $ per pair

Contact us to get a quote with shipping at contact@liiaudio.com

Dual-Metal Innovation for Deep, Expressive Sound

The Lii Audio ST 6 full-range speaker marks a bold step in loudspeaker design — the first from Xizi Trumpet Flower to feature a dual-metal cone structure. Using a precision-engineered aluminum diaphragm, this driver delivers a full-range sound with deep, controlled bass, rich, moist mids, and delicate, extended highs — all in a single-driver design with no crossover required.

At the heart of the Silver Edition is a heavy-duty double-cone aluminum diaphragm, offering three times the mass of a paper cone for increased dynamic stability and low-frequency authority. To balance the added mass, we’ve integrated a high-grade N52 neodymium (NdFeB) internal magnet system that delivers 15,500 Gauss of magnetic flux, significantly boosting sensitivity and control.

Housed in a 30L bookshelf cabinet, this speaker provides full-range performance from 42 Hz up to 20 kHz, making it a versatile choice for high-end DIY builds, tube amp pairings, or minimalist two-channel systems.

Key Features

6.5" Full-Range Driver with dual-cone aluminum diaphragm
Precision-cast aluminum basket and DuPont suspension
Resin phase cone for smooth high-frequency dispersion
High magnetic flux (15,500 Gauss) with N52 neodymium magnet
No crossover needed — pure, phase-coherent full-range output
Designed for low-power amps, including SET and Class A
Ideal for 30L bookshelf cabinets, wide baffles, or open-baffle setups

Technical Specifications (Thiele-Small Parameters)

Resonant Frequency (Fs)
42.656 Hz

Mechanical Resonance (Fo)
81.6 Hz

Vas 21.737 L

Magnetic Flux
15,500 Gauss

Magnet Material
N52 Neodymium

Re (DC Resistance)
4.448 µΩ

Sensitivity (SPL)
90.78 dB (1W/1m)

Qms
3.844

Qes
0.456

Qts
0.407

Sd (Cone Area)
132.6 cm²

Cms (Compliance)
870.60 µM/N

Mms (Moving Mass)
13.074 g

Mmd (Diaphragm Mass)
16.0 g

Rms (Mechanical Loss)
0.79

Le (Voice Coil Inductance)
219.646 mH

Force Factor (Bl)
7.771 T·m

Power Handling
50 Watts

Recommended Usage

Optimal in 30L bookshelf cabinets for full bass response
Engineered for low-wattage tube amps, SETs, and minimalist HiFi chains
No crossover required — ideal for purist signal paths