Advances in instrumentation and techniques for energetic-neutron spectrometry include the development of large-volume scintillators and a mean-timer electronic module to provide subnanosecond timing resolutions for time-of-flight measurements with improved energy resolutions, new determinations of the light response to protons (relative to electrons) of NE-228, NE228A, NE-224, and NE-102 scintillators, and the development of a multiplexing technique to permit the operation of several different counters simultaneously with our transportable data-acquisition system. Measurements demonstrating and utilizing these advances include neutron energy and angular distributions from 710-MeV alphas stopping in thick targets, and neutron spectra and yields from the nuclear capture of negative pions. Included also is a discussion of a planned experiment to measure neutron spectra from heavy-ion reactions at the Lawrence Berkeley Bevalac.