WardenJ
Junior Member
I just had a new head unit, front speakers and an amp installed in my truck and I think something is wrong.
The head unit is a Pioneer DEH-P77DH (45w X 4 max), the speakers are Alpine Type S components (up to 50W RMS), and the amp is an Alpine MRP-F240 (50W X 4 RMS at 14.4V), the rear speakers are still stock, 6.5" coax.
Before I got the amp, the rear speakers sounded much more powerful than the fronts, so that if I moved the fader from rear to front, the volume noticably declined as I went forward. I was told that this was because the rear speakers handle less power than the fronts, so the rears were running more efficiently off head unit power than the fronts, hence the difference. They said the situation would reverse when i got the amp. As it was, I had to have the volume up at like 45 (out of 65) in order for it to sound decent but not too loud.
Now, with the amp, the rears are still more powerful. I need to have the fader to the front (F-7 out of F-15 with 0 being center) for the front speakers to be noticable, however now the volume only needs to be as high as 31 or 32 for the same sound as the pre-amp 45. The gain on the amp is about halfway up, and I am afraid to crank the gain as I do not want to damage anything.
This does not sound right to me. When I played with similar power decks at stores, I was deafened at sound level 19 without an amp on and less than 10 with an amp of similar power. Also it seems to me that the front speakers should blow the rears out of the water especially now that they are amped.
Does this sound as simple as turning up the gain or might I look somewhere else for the problem? Thanks for any help here.
The head unit is a Pioneer DEH-P77DH (45w X 4 max), the speakers are Alpine Type S components (up to 50W RMS), and the amp is an Alpine MRP-F240 (50W X 4 RMS at 14.4V), the rear speakers are still stock, 6.5" coax.
Before I got the amp, the rear speakers sounded much more powerful than the fronts, so that if I moved the fader from rear to front, the volume noticably declined as I went forward. I was told that this was because the rear speakers handle less power than the fronts, so the rears were running more efficiently off head unit power than the fronts, hence the difference. They said the situation would reverse when i got the amp. As it was, I had to have the volume up at like 45 (out of 65) in order for it to sound decent but not too loud.
Now, with the amp, the rears are still more powerful. I need to have the fader to the front (F-7 out of F-15 with 0 being center) for the front speakers to be noticable, however now the volume only needs to be as high as 31 or 32 for the same sound as the pre-amp 45. The gain on the amp is about halfway up, and I am afraid to crank the gain as I do not want to damage anything.
This does not sound right to me. When I played with similar power decks at stores, I was deafened at sound level 19 without an amp on and less than 10 with an amp of similar power. Also it seems to me that the front speakers should blow the rears out of the water especially now that they are amped.
Does this sound as simple as turning up the gain or might I look somewhere else for the problem? Thanks for any help here.
