In modern days, thunder sounds are recreated by CDs or digitalaudio in most theaters and video/audio productions. These audioclips can be obtained almost anywhere. Many sound effect CDs areavailable across the internet and in music stores. In the olderdays of theater and production, thunder sounds were created bysuspending a large (4'x8') sheet of thin guage metal and "playing"it with padded mallets. The playing action to recreate a rollingthunder effect is similar to a drum roll with an ending accent.With modern sound effects, audio clips and CDs the key toreproduction is obtaining speakers that can reproduce the lowfrequencies clear and acurate. Required amplification can rangefrom several hundred watts of audio power to over 10,000 wattsdepending on the venue size and room acoustics.