FORSALE Price : 180k MAGNEPAN SPEAKER The Magnepan Tympani 1D's exact specifications, including frequency response and sensitivity, are not readily available in public databases, as it's a vintage, no-longer-manufactured model with less detailed documentation than newer models. However, it was a three-panel, dipolar, magnetically driven speaker with a planar magnetic woofer and either a quasi-ribbon or planar tweeter depending on the specific version, with a nominal impedance of 4 Ohms. Key Feat