A new method for two-dimensional separated local field solid-state NMR spectroscopy was developed. By applying a time averaging effect for the nutation frequency in the tilted rotating frame, which we proposed recently, a large reduction of the RF power for observed nuclei during the spin exchange period can be achieved without impairing the H-1 homonuclear dipolar decoupling efficiency. The reduction of the RF nutation frequency and the RF field for observed nuclei during the spin exchange period were achieved experimentally as 1/3 and 1/9, respectively, for the C-13 NMR signals of liquid-crystalline 5CB. Consequently, effective attenuation of sample heating was obtained. (C) 2004 Elsevier B.V. All rights reserved.