KT,
David/MLA is 100% correct. Speakers do not make hiss. They reproduce what they are sent. If someone has
Told you that changing speakers is going to fix it. That is bad advice and very wrong. It sounds like there is a signal issue and/or tuning issue. Maybe an issue with the head. since they pulled the eq and swapped amps. Then they have taken good steps in fixing the issue.
Please shoot me a call or email
[email protected] and I will get you in touch with our rep in the area. I just sent him this thread so he is in the loop.
We had an OEM that had a lot of noise issues. Hiss and engine noise. We went over their boat from top to bottom. Swapped Amps, RCA, power, ground. Found out it was a particular head unit next to their dash switches. Swapped to different model head unit from same brand. All noise was gone. We have seen all types of noise issues and can figure it out for sure.
Tim
Wet Sounds