How do i make my two l5 10 subs sounds with clear

Try these:
Make sure the gain isn't set too high. That's a very common cause of distortion. You'll never want it set above 3/4 of the way to high. It will be a small dial on your amp marked "gain".

See if your receiver has a built in crossover on the channel your amp is hooked up to and set it so the cut off is at 400hz if possible. Meaning that the receiver will only send frequencies of 450hz or lower to your amp

Look on the amp for a built in crossover to the channel your amp is hooked to and set it to 450hz.

Make sure the cable that connects your amp to your stereo isn't running near any power cables of any kind because electricity running through a power cable can be picked up and then the sound it makes will be amplified, sent to your subs and cause distortion.

Make sure your amplifier isn't grounded to
your battery as this can cause what's called ground loop noise...also distortion.

Ground your amp as far away from the amp itself and your subs as the manufacturer safely recommends.

If none of those help then i'll try again :)