View Full Version : pioneer deh-4900ib

02-26-2007, 02:36 AM
was wondering about the LP filter on the HU. I'm not sure if the filter is on or off, cause when i look at it, the cutoff frequency is 80hz(adjustable): then after that i can adjust the output from -24 to +6. right now the output is at 0, does that mean it is "off", cause what would happen if i use that one and the one on my amp?