The nominal source of the Speyerbach is located near the hamlet of Speyerbrunn in the municipality of Elmstein, in the middle of the Palatinate Forest, east of the Palatine Watershed. It has an elevation of AMSL; the surrounding Frankenweide hills climbing up to in height (Eschkopf). Soon after its nominal source, it is joined by the much larger Erlenbach, which rises at the Hussars Fountain, further south, on the Eschkopf, at an elevation of . So, hydrologically speaking, the Hussars Fountain is the true source of Speyerbach.