When you say the DSP amp are you referring to the space on side in the rear driver side? That is where the DSP amp is located. Check the seal on the DR taillight.
If you are seeing water in the center well, that is the radio module.

__________________
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams

2003 X5 4.6is Estoril Blue
2005 Infiniti G35X
1972 Datsun 240Z
1991 Isuzu Impulse XS Sold
1972 Fiat 850 Spyder Donated
1972 Datsun 240Z Sold
1972 Datsun 510 Sold