I recently moved the subwoofer for my 4.1 Altec Lansing ADA885 speaker system and noticed that it left a red sticky substance on the plastic chair mat where it had been sitting.  There is no visible spot on the bottom of the subwoofer that I can see where it is coming from.  Does anyone know what this could be and if it could cause problems.  Thanks.Does it still WORK OK?
Feel the subwoofer - are there strange patches?
Are you sure it came from the subwoofer?
It may have been there before, or something may have been SPILT there.
I'd say if it's not playing up and the substance doesn't cause problems, leave it be - I have no idea what it could be or what could have caused it to start leaking.
I must say, this is a bit different from the usual questions
There is NOTHING out of the ordinary on the bottom of the subwoofer.  This is the second place I have moved it and it has left a stain in both places.  After looking closer, I did NOTICE a small red spot on one of the screws on the bottom of the subwoofer.  I know this is not your normal troubleshooting question, but I wasn't sure where else to look.  Thanks.Very strange.
Having never opened up a subwoofer, I can't really advise further.
Maybe GET in touch with Altec Lansing tech support?