Tuning the system will be an ongoing process for the first few weeks. As the speakers break in and your musical taste will quickly change. You will begin to savor the flavor of sound quality. The sound will keep getting better over time.

We will give you some basic settings, but you will need experiment and end up tuning for your ears/toy. A big consideration is your head unit. We initially chose the 9885 because of the great price and the built in high pass filter. We ended with the xyz, becuse of the better face plate design. Plus it has a low pass filter. A high pass filter is much more important to keep low signals from damaging your door speakers / tweeters. We set our high pass filter @ 80hz on the stereo itself and about the same on the amp. The filter will keep the head unit from sending bass signals below 80Hz to the door speakers. It provides better sound and protects the speakers from damaging frequencies.

Summary:
Filters/Xovers:
Set your high pass filter on the stereo to 80Hz.
Set your xover on your speaker amp (passenger) to hair below 80Hz.
Set your xover on your subwoofer amp (driver) to about 80hz. If you stereo does not have a high pass filter this will act as your filter. However, the amp filter will not be as good as the filter on the unit.
Gain:
Set the gain on both your amps to number 4. In this case we have a 4 volt output from our head unit. This will be adjusted in a couple of weeks as we will not apply enough power to the speakers for at least two weeks. We are big on break in period. Please note if you set the gain too high the amp will go into protection mode. To much gain is not a good thing and reduces sound quality. We will have a final tuning section later in these instructions.

Output Bass Boost Level:

Bass boost levels can range from +6dB to +18dB, depending on the amplifier. You will notice the boost when experimenting with this adjustment.

Since we installed a remote boost controller for our subwoofer amp we turned the bass boost all the way up on the subwoofer amp. In our other amp we set it about � of the way up and adjusted later by ear. You will not want to much bass coming from your door speakers. But you have to find the balance for your mid bass. This is done by ear and your preference.

In this picture you can see the screws that hold the crossovers in place. Bet you did not even notice them till you read this!