The GPDC mission computer formerly fitted in the S3 can now only be viewed at the Smithsonian. It was the size and weight of Cyril Smith.
Things have moved on a tad.
Think shoe box 5" x 8" x 13 "weighing in about 16 KG.
As for the Acoustics, same size less weight.
General Dynamics? Acoustic Processor Selected for Republic of Korea P-3 Aircraft Upgrade Program
http://www.gdcanada.com/products/und...ts/uys505.html
And no, I don't work for them !