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View Full Version : Head Units and Hi Volt Pre-outs



JeffM
04-28-2008, 10:58 AM
I was wondering if someone can explain what the Volts on the RCA pre-outs does. My current Pioneer 4800 only has 2.2V pre outs, and Im going to be buying a new headunit with 5V or higher. What does the higher Volts do?

DejaWiz
04-28-2008, 11:03 AM
Nothing, except will allow for less of a chance of noise being inducted into the signal line in an environment that has quite a lot of EMF/RFI.

lashlee
04-28-2008, 11:32 PM
It also allows you to turn the gains down on the amp. This may lead to cooler running, better dynamics, less noise production and may make the system seem cleaner.

JeffM
04-28-2008, 11:36 PM
With my current setup, I can hear a hissing noise in the background. The only way to get rid of this is to lower the gain. If my headunit has a higher pre-out volt then will this noise go away?

lashlee
04-29-2008, 01:12 AM
It should, though make sure that is where the noise is coming from. If the noise is from something else in the car, the noise may go away with a component swap.