Need help with tuning, specifically amp x-over settings...
Well I am now using my amp x-over rather than my head units x-over and I have noticed alot better response. However, I want to see if there is anything I can do to tune it just a bit better. I have a PPI PC2600 (600X1 @4ohms) running to 2 12" Pioneer 305DVC's. They are in a sealed box, 1.0 cubes before displacement. My settings on the amp are LP filter on, x-over on and tuned to 80hz (as far as I can estimate) and the Q-bass, which is PPI's bass boost, is 3 clicks up (about an 8th of the way). My gain is at about 75%. Im having a couple issues with this setup. For one, it seems as though I've lost some of my low range frequency. Before it didn't "hit" as hard but got louder in the low freq. range. Secondly, I get a bit of distortion on high end frequencies. Not to mention, high range, rather than low range seems to dim my lights more. I am using my full range preouot from the headunit and its 4V while the amp sensitivity is 800mv to 12v. My eq on the headunit has bass all the way down, mid range +2 and highs +6. I have the bass output tuned to 80hz on the head unit as well. Sorry about all the details but I just wanted to make sure you can help me out and didn't want to leave anything out in case Im doing something wrong. If anyone can give me an advice it'd be great.
- Source Unit -
Pentium 4 1.8GHz
Intel mobo w/integrated video
SB Live powered by Kx w/full DSP control
180GB HD (1x20GB OS, 1x160GB Media)
- Audio Hardware -
Front stage: PG RSD 65cs Comps @ 80Hz - 24db slope (HP), drivers in the door, tweets in the sails
Sub stage: Pioneer 12" 305DVC @ 80Hz - 24db slope (LP), sealed ~ 1.5 cube (net) in the trunk
Comp amp: PPI Sedona APA630IX
Sub amp: Alpine MRP-M500