Coil and shunt resistance values affect the sensitivity and pole values. To calculate poles, zeros and sensitivities for L-28LBs built with other resistor values, or to take datalogger impedance into account, click here.
These responses assume that the input resistance of the attached amplifier or datalogger is at least 2 orders of magnitude larger than the shunt resistance. If this is not the case, total dampling will not be 100% assumed below and the poles will not describe the system accurately.
| Manufacturer | Model | Frequency / Period | Coil Resistance | Shunt Resistance | Sensitivity | RESP Filename | Source | Comments |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 395 Ohms | None | 31.3 V/M/S | RESP.XX.NS382..SHZ.L28LB.395.NONE.4_5.31_3 | Sercel | |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 395 Ohms | 2490 Ohms | 27.0 V/M/S | RESP.XX.NS361..SHZ.L28LB.395.2490.4_5.27 | Sercel | PASSCAL |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 630 Ohms | None | 39.5 V/M/S | RESP.XX.NS383..SHZ.L28LB.630.NONE.4_5.39_5 | Sercel | |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 630 Ohms | 3971 Ohms | 34.1 V/M/S | RESP.XX.NS384..SHZ.L28LB.630.3971.4_5.34_1 | Sercel | |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 630 Ohms | 6097 Ohms | 35.8 V/M/S | RESP.XX.NS385..SHZ.L28LB.630.6097.4_5.35_8 | Sercel | |
| Sercel | L-28LB | 4.5 Hz / 0.5 s | 630 Ohms | 11874 Ohms | 37.5 V/M/S | RESP.XX.NS386..SHZ.L28LB.630.11874.4_5.37_5 | Sercel |
Mary Templeton 6/28/2016