Vintage Stats / Stax
| model | years | diaphragm thickness | sensitivity |
|---|---|---|---|
| SR-3 | 1968-1971 | 6.0um | 95dB/100Vrms |
| SR-X | 1970-1972 | 3.8um | 95dB/100Vrms |
| SR-3N | 1971-1975 | 6.0um | 95dB/100Vrms |
| SR-Xmk2 | 1972-1975 | 2.0um | 95dB/100Vrms |
| SR-Xmk3 | 1975-1988 | 2.0um | 97db/100Vrms |
| SR-5 | 1975-1982 | 4.0um | 96db/100Vrms |
| SR-5N | 1982-1986 | 2.0um | 96db/100Vrms |