Subs aren't hitting PLEASE HELP!!!

[Justin braaapp]

So here is a little background. I have had 2 alpine type r 12's hooked up to an mtx thunder 81000 amp and my door speakers were running off the head unit. My subs would bband hard and I loved them but today I decided to hook up an amp for my door speakers and I got it all done and the door speakers sound amazing but for some reason my subs just don't hit like they used to at all I have no idea what happened, they are on and working but just don't hit at all. If anybody can help me I would really appreciate it thanks guys!

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[AndrewHD 10+ year member]

What head unit do you have? And how did you run the RCAs

 

[Justin braaapp]

I have a pioneer deh x8500bh and I just ran 2 sets of rcas cables one from the spot that said sub on the head unit to the subs amp and one that said front on the amp to the door speaker amp

 

[AndrewHD 10+ year member]

That sounds correct. Make sure your sub is crossed over at around 80hz and none of the deck settings have changed

 

[Justin braaapp]

How do I set the crossover? From the head unit?

 

[Jeffdachef 5,000+ posts]

play around with your settings, but it sounds like its most likely your having voltage drops.

 

[Justin braaapp]

play around with your settings, but it sounds like its most likely your having voltage drops.

Really on only 1300 rms? I figured it would be fine but I'm not sure. Could it be that I didn't use a distribution block for my power wire or something like that since I used 2 power cables instead of a distro block.

 

[CrossoverOre 10+ year member]

try disconnect one sub and see waht happens might be a phaseing issue

 

[lipski24.ml 10+ year member]

No, I got her all figured out! But thanks!