Lumps in level truncated open string field theory

The ratios of the masses of D(p−d) branes to the masses of Dp in open bosonic string field theory are computed within the modified level truncation approximation of Moeller et al. At the lowest non-trivial truncation requiring the addition of new primary states, we find evidence of rapid convergence to the expected result for 2⩽d⩽6 providing additional evidence for the consistency of this approximation.