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LNGR SPKRHIFI. TWO WAYS. HANDCRAFTED.
LNGR 2-PR-THT-PRSIMULATION · CNC v1.2

LNGR 2-PR-THT-PR

Two Dayton TCP115-4 woofers, the Lautsprecherwerk TEXTUS unit and two DMA105 passive radiators on a front only about 130 mm wide.

IDEA
SIMULATION
BUILD
MEASUREMENT
FINAL
AI concept of a very slim black active MTM loudspeaker with two woofers, a central high-frequency unit and two passive radiatorsEntwurf nach Vorgabe von Flo
Form and proportion concept. Technical geometry follows CNC geometry v1.2.
StatusSIMULATION / CNC v1.2
Front orderPR – TCP115 – TEXTUS – TCP115 – PR
Target size≈ 130 × 650 × 200 mm
Net target≈ 9.5–10 L
PR tuning≈ 46–47 Hz
TCP↔TEXTUS120 mm CTC · CNC v1.2

Current geometry: CNC v1.2

The confirmed code is LNGR 2-PR-THT-PR. Front centres from the cabinet bottom are PR 60 / TCP115 205 / TEXTUS 325 / TCP115 445 / PR 590 mm. Each TCP115 is 120 mm centre-to-centre from the TEXTUS; the earlier v0.2 layout at about 115 mm is superseded.

The TEXTUS opening is documented as an R37 body with a 32 mm neck, a Ø116 mm × 4 mm flush recess and three Ø4.2 mm mounting holes on a 101.5 mm pitch circle. Cabinet dimensions are 130 × 650 × 200 mm with 15 mm panels. Test-fit one baffle before ordering finished material.

Net volume of roughly 9.5–10 L and 46–47 Hz passive-radiator tuning remain planning estimates, not measured results. Verify net volume after assembly and tune the DMA105 pair from an impedance measurement.

Learn the design through this project

Follow the real design questions from layout to verification. CNC geometry v1.2 is documented; the speaker has not yet been built or acoustically measured.

Driver spacing, level and phase →Passive radiators and tuning →Series wiring and impedance →Crossover fundamentals →Read and shape a response →Measurement practice →Power-rail decoupling →Power supplies →Open the crossover studio →

Workshop takeaway: the drawing can settle whether parts fit; only measurements can settle the crossover and acoustic sum.

Open the build log →