An experimental setup related to acoustic field modulation in a regenerator by double loudspeakers method has been designed and built up. The system was divided into parts I and II. It consisted of two loudspeakers, two resonators, a hot heat exchanger, a cold heat exchanger, and a regenerator. In the experiments, the driving frequency was 174Hz. The driving voltages of double loudspeakers were changed from 0.5V to 5V with a step of 0.5V, and their phase differences were adjusted from 0° to 360° with a step of 5°. The experimental modulations on acoustic fields including pressure, velocity and acoustic impedance near the regenerator were carried out under all driving conditions of the double loudspeakers. The experimental results showed that the theoretical model of acoustic modulation was correct. In the actual acoustic modulation, the acoustic conditions required for double loudspeakers or driving voltage conditions are quickly determined according to the modulation law, and then it can further achieve the desired acoustic field modulation based on fine-tuning or adaptive system.