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The Douk Audio S4 is a passive 2-way bookshelf speaker pair with two 4-inch Nomex mid-bass drivers and a 1-inch silk dome tweeter per cabinet, crossed at 3kHz. It is 4Ω with 50W AES / 100W max handling and covers 55Hz–22kHz from a tuned bass-reflex cabinet in white piano gloss. It suits desktop and small-room listeners who want detailed, layered sound and can bi-wire or bi-amp. Against single-woofer 4-inch rivals it offers more cone area and warmer lower mids, but it gives up deep bass to larger standmounts and leans bright out of the box.
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Owners describe detailed, room-filling sound with precise bass and a well-defined soundstage, and praise the finish and build. Many note the bass feels light at first and the tone leans bright until the drivers break in.
The Douk Audio S4 is a pair of passive 2-way bookshelf speakers. Each speaker has two 4-inch mid-bass drivers and a 25mm coated silk dome tweeter with a neodymium motor. The mid-bass drivers use a Nomex composite cone, a long-excursion design and shorting rings for steadier cone control and lower distortion.
A 3kHz crossover with MKP capacitors and air-core inductors hands off between the tweeter and the mid-bass drivers. The tuned bass-reflex cabinet reinforces the low end through controlled airflow. The binding posts are bi-wire and bi-amp ready, so a system can run separate high and low frequency paths.
The cabinet has a white piano-gloss finish with rounded edges and no veneer edges. Protective grilles cover the drivers, and anti-slip foot pads help keep the speakers stable and reduce scratches on desks, shelves and racks. The speakers suit speaker stands, shelves, desktops and audio racks.






