How to set the crossover on Exile Javelin Amp

A common question that we get is, how to set the crossover on Exile Javelin Amp. Many of our customers are first time installers and some of this information can be a bit overwhelming. To keep it simple, the example below is the most common steps that we use to set up an audio system. . . . for you gear heads that want to dig a lot deeper, my long winded explanation will follow. 🙂 along with other options.

Tools you will need:

Digital Multimeter / Voltmeter
Small Screwdriver that will fit in amp knobs.
Test Tones – same tones used to set the gain on your amp.

Steps you should have already completed:

Set the head unit to maximum unclipped volume. (Speaker Wires Should NOT be hooked up!)
All internal EQs, adjustments on the head unit should be set flat. Not boosted or lowered.
Set the gain(s) on your amp before you setup the crossovers.
Decide on your crossover point and acquire the test tones you will need. The most common crossover point is 80Hz. – Click here for link to test tones and requirements.
Turn both High Pass Filter (HPF) knobs all the way to 15Hz (as far left as possible)
Turn Low Pass Filter (LPF) knob all the way to 300Hz (as far right as possible)

Setting High Pass Filters (Speakers):

Remove all speaker wiring from the amplifier. (label your speaker wiring)
Set the multi-meter to ACV (Alternating Current Voltage)
Insert the multimeter leads into channel 1 and screw down gently (See picture below for channel layout and explanation)

Exile Javelin Amplifier wiring diagram and channel layout

Turn on vehicle and play test tone at roughly half of the maximum volume (does not need to be exact)
Enter the voltage displaying on your multi-meter into field “Voltage 1”

Turn the Front HPF knob to the right until it matches as closely as possible to “Crossover Voltage”.
Repeat the same steps for channel 3 – turn the Rear HPF knob to the right until it matches as closely as possible to “Crossover Voltage”.

Setting Low Pass Filter (Subwoofer)

Insert the multimeter leads into channel 5 and screw down gently (See picture above for channel layout and explanation)

Turn on vehicle and play test tone at roughly half of the maximum volume (does not need to be exact)
Enter the voltage displaying on your multi-meter into field “Voltage 1”
Turn the LPF knob to the left until it matches as closely as possible to “Crossover Voltage”.

The crossovers are now set at desired crossover setting. NOTE: It is NOT uncommon for amps to be marked incorrectly there are many factors and most manufactures provide the numbers as a guide.