babumazda3 Posted May 4, 2015 Author Report Posted May 4, 2015 That would probably be the issue with not getting the desired output. As to what is causing that, that's what you need to figure out. thats a stock HU? Are you using a LOC or does it have stock RCA outputs? This is an after market HU. It has stock RCA outputs. The amp is rocford fosgate and it comes with punch eq and other bass boost knobs. I don't want to use them as i've read some where they are bad. At the moment, with gain all the way up, the amp hardly moves the sub.
TRON Posted May 4, 2015 Report Posted May 4, 2015 Head unit is dead if you have the subwoofer level as high as it goes and only get 0.2v out of it. Unless you are measuring that voltage THROUGH the RCAs. If that measurement is directly from the head unit, then its done, but if it's from the RCA's you might just have dead RCA's. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
rockFord_Expedition Posted May 4, 2015 Report Posted May 4, 2015 You have to be able to supply the power it takes to make the power you want. Is your OEM electrical capable? A DMM is not a good tool for setting gains. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire
babumazda3 Posted May 4, 2015 Author Report Posted May 4, 2015 i didnt make the measurement at the head unit out of fear of damaging the rca. I did the measurement from the RCA cables coming off from the head unit.
SIDE SHOW Posted May 4, 2015 Report Posted May 4, 2015 if your rca's connected to the rca output of the headunit are bad, broken/cut, you wouldn't be able to tell if it's the headunit or the rca's at fault, check the rca output at the rear of the headunit
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