Tympani IB
| Brand | Audio Research, Magnepan |
| Manufacturer | Magnepan, Inc., Audio Research Corporation |
| Designer | Jim Winey |
| Function | Speaker |
| Produced | 1973 |
| Country | United States |
| Model ID | T-IB |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 121.9 × 182.9 × 2.5 cm (W × H × D) |
| Weight | 160lbs (System Shipped) |
| Frequency Response | 45Hz-18kHz ±3dB, 38Hz-20kHz ±5dB |
| Treble | 88in² Push-Pull Planar-Magnetic |
| Midrange/Bass | 504in² Single-Ended Planar-Magnetic (x2) |
| Sensitivity | 94dB/10W/2m |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 1.6kHz |
| Crossover Slope | 6dB/Oct (First Order) |
| Recommended Amplifier Power | 10-500W |
| Power Handling (Program) | 350W |
| Enclosure Type | Dipole |
| MSRP (1974) | $1155 |