View Budget bookshelf less than 10” box, a 2-way loudspeaker design by @Bvalentine124 on LoudspeakerLab.
Preference rating 6.6 · F3 58 Hz · Max SPL 104 dB at 1 kHz · Min impedance 3.5 Ω · Sensitivity 84.2 dB · Estimated cost USD 117
Baffle 229 × 254 mm