[en] The spinel solid solution series MnAl_xCr_xFe_2-2xO₄ with x=0.0-0.9 in steps of 0.1 was studied using powder X-ray diffraction profile refinement, magnetization measurement at 80 K using an applied magnetic field 3.18x10⁵ A-turn/m, Moessbauer spectroscopy at 300 K and low field AC susceptibility measurements. We have seen that the increase of Cr³⁺ ions and Al³⁺ ions in B sites at the cost of Fe³⁺ ions leads the present system towards the Neel type of collinear ordering of spins. The negative quadruple shifting seen in Moessbauer results and high value of oxygen positional 'u' parameter indicate oblate type of deformation of 3d⁵ shell. The results indirectly support the theory of 'exchange disorder' of Fe³⁺ ions in B sites as the cause of the reduction in magnetic moment for MnFe₂O₄ from Neel type of ordering. There is the emergence of 'spin clusters' in the long-range network of spins as indicated in the ac susceptibility and Moessbauer results at room temperature in x>0.7 compounds