House of Stain
The workshop · House of Stain — 4k

A two-way open baffle, built as an emotional reference.

An LiiAudio F-12 12-inch full-range driver paired with the W-15 15-inch woofer, mounted on a valchromat baffle inside an asymmetrical stainless-steel U-frame. Swapping left and right tunes the speakers to a bigger or smaller room without touching the crossover. The W-15 is dual-voice-coil, which is why the back carries dual binding posts — bi-amp the woofer separately from the full-range or drive both with a single amp that holds composure under a 3 Ω dip.

House of Stain · 4k House of Stain 4k loudspeaker, 3/4 angle: dark baffle with two LiiAudio drivers (F-12 above the W-15), wrapped on one side by a curving brushed-stainless U-frame. The open back is visible. Floor-standing on metal feet.
House of Stain — 4k
Two-way · open baffle (dipole) · prototype
Prototype

A holographic image and a rich midrange, with a distinct zing on acoustic-guitar pluck.

Configuration Two-way · open baffle
Drivers LiiAudio F-12 (12″ full-range) + W-15 (15″ dual-VC woofer)
Sensitivity 92 dB
Impedance 4 Ω (dips to 3 Ω)
Usable range 40 Hz – 10 kHz
Crossover 2nd-order at 450 Hz
Wiring Dual binding posts (W-15 dual VC)
Cabinet 5 mm stainless U-frame, valchromat / HDF baffle
Dimensions 106 × 50 × 39 cm (H × W × D)
Weight 40 kg / speaker
Room tuning Swap L / R per room size
Recommended amplification

Bi-amped through the dual binding posts: a SET tube or Class-A low-noise amplifier on the F-12 (the midrange will reward the refinement); a 200 W solid-state on the W-15 for the bass. Single-amp setups need to hold composure through a 3 Ω dip.

Workshop contact Talk shop · sales@houseofstain.com
Read the build notes
House of Stain 4k seen in profile — the asymmetric stainless-steel U-frame curves from baffle to back, the open rear lets the drivers radiate behind. Mounted on steel feet.
Top-down view into the U-frame: LiiAudio F-12 full-range driver and W-15 dual-voice-coil woofer mounted on the rear of the baffle, internal wiring exposed.
Dual binding-post plate on the back of the baffle — two pairs of red/black posts, bi-amp-ready, with copper speaker cable connected to the lower pair.
Front-on close-up of the F-12 full-range driver above the W-15 woofer, mounted on the dark baffle with a vinyl shelf visible to the side.
Alternate angle into the U-frame from above, showing the F-12 and W-15 drivers seated on the back of the baffle with internal wiring.
Bottom view of the speaker showing the W-15 woofer label on the magnet and the dual binding-post connectors with their copper cables routed out from the base.