Tuning my system....where to start?

[DirtFarmer]

Hey guys. I have a few questions with system. I've got it all installed and am looking for some advice for tuning. I understand the lower the Hz is for bass sounds and the highest for Tweeters.

Here’s what I have in my 2005 Mustang GT

Head unit - Kenwood KDC-x696

Amp -Alpine MRP-F300

Speakers - Alpine Type R 6.5" components

Speakers - Alpine Type R 6"x8" Co axels in the rear deck

Sub Amp - JL Slash 500/1

Sub - JL 12" W3v3 in a power wedge box.

What is a good starting point for my frequencies? My head unit and both amplifiers have HP/LP filters (sub amp only has LP filter), which should I use the amps or the head unit?

I’m sure I need to read thru the manuals to get a better idea but was hoping for some general tips or links to some threads already created that either have similar equipment or something very close. For example I’ve read a few people have found success with the -2db setting on the tweets crossovers, I’d like to hear more about people experiences with this equipment if possible.

Thanks guys!

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[rebelfromva 10+ year member]

50 for sub amp

 

[neonblack 10+ year member]

Adjust HPF and LPF on the amps with test tones. I would not set Low Pass above 60 Hz. (Subs are meant to play below 60 Hz. The low E on a guitar is 80 Hz so that gives you a reference point. You don't want that signal going thru your sub(s), you want it going thru your mids). The HPF and LPF have crossover slopes (see link) so the sub and mid signals will overlap somewhat as they descend and fade out. You have to use your ear and adjust crossovers to your liking. I set my Kenwood sub amp to 60 Hz and midrange amps to about 70 Hz and the filter signals both descend (at a certain rate) between the two frequencies and overlap so experiment til you get a balanced sound and the overall system loudness stays fairly constant thru that range.

All you need to know about amps are here:

Basic Car Audio Electronics (go to -> 27. Crossover Slope Basics)