[en] The quadrupole-dipole-dipole-multipole (QDDM) magnetic spectrograph and associated experimental methods employed at the Indiana University Cyclotron Facility for studies of the A(p,πsup(+-))A + 1 reaction are described. The techniques have been used successfully for extensive measurements of the energy-mass-and state-dependence of (p,π⁺) differential cross sections in the near threshold region (Tsub(π) = 9 to 60 MeV), and for measurement of the polarization asymmetry in the (p vector,π^-) reaction. Background levels of about 0.1 nb/sr and an energy resolution of 63 keV fwhm have been achieved. (orig)