Per your instructions:
0) Get a CD you really know and have it be very bass and highs heavy. ONE OF THE HARDEST SONGS/DISCS YOU WILL LISTEN TO

1) Start with the gains all the way down.
2) Set xover around 65 (for 6.5) and 75 for the (5x7).
3) Turn the radio up to abt 3/4 volume.
4) Slowly add in the front speakers until speakers just start to clip then back off about 1/8 turn.
4a) If mids start to distort then turn xover up until that is gone.
5) Add in back spks until you just start to notice the rear fill.
5a) If mids start to distort then turn xover up until that is gone.
6) Enjoy and tweek with other songs.

What is a good setting for the low pass crossover for the sub, given your recommendations in 2) above? 65 or something higher? Thanks!

 

Approx 65Hz if you are using 6.5's and 70-75 if using 5x7's. Thats about where I start. Now, you will have to use your ears to hear any distress from the spk. But that will be a fairly good start for you.

 

I'd cross over a litter higher than what low recomended

start about 80Hz for 6.5's and 100ish for 5x7's

 

At those points bass will start to become directionalized.

 

not an issue at 80hz. minimal around 100 in a car..

 

Okay, great. Thanks for the input and the clarification.

 

I disagree completely.

 

Rear speaker is a 5" round speaker. Would it still be in the 70-75 hz range as the 5x7? The fronts are 6.5", so no issue there. Based on what you've posted, I'm taking it that the sub low pass needs be set at the high pass point where the front speakers are set. Rear speakers are just fill.

 

you would. you would be hard pressed to tell where 80Hz is coming from in a room as small as a truck...

 

x2. I found my 6.5s to be much better crossed at 80 than at 65.

 

I have no opinion.


My mids are crossed at 63 Hz though

 

Ya, no opinion....

5" in the 70-80hz range.

 

5x7" 6.5", 5'25" are all mid bass. you can play low frequencies. but they are not mean't to play that. I you want some bass, get subwoofers. I always set my HPF to 125 hz to filter out all the lower frequencies so I can get a clean mid sound. Unless you are running 6.5" drivers or 5.25" drivers, leave anything under 80hz out of them

 

I'm still playing with this thing and so far with the high and low passes crossed at 80 hz, it sounds pretty good. At 65, with volume, it wasn't as clean as it is with 80. I'll try 100 next, just to see what it has to offer.

There sure is a lot of road noise from those air vents with the top back seat out of the truck. I may just cable tie the seat clips for easy removal in case things sound different with the seat back in place. That thing sure is a pain to get loose.

I appreciate the help. There's a lot a good info to be found in these forums. If anyone is debating amping the factory head unit, give it a shot. It's a good improvement. Since I was adding an amp for a subwoofer, I went with a 5 channel to drive the door speakers too.