07 US Amps MD3D's acting funky?

[Anonymous 10+ year member]

I hooked them up using the MLT, linked together, and I can not get them to push my 2 AQ HD3's with the same power. I have tried everything I know to tune them but they will not push them with the same authority. I can get them to be working the same on a test tone but whenever I play music the subs do not hit the same frequencies with the same authority. One will hit the low frequencies good and the other will hit the mid to high frequencies better. What is going on? I tried to turn all the gains to the same point but that just makes one sub hit hard and the other one will be lagging. What should I do, I tried to unlink them with the RCA's and have them acting as single amps so i can tune them as one but then only one sub works. I need help also I was not the one to install these so I do not know how the RCA's are ran in the HU if that has anything to do with it. Someone help please!!!! Other than that they put out good power and I am pleased if I can work out this kink.

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[Anonymous 10+ year member]

nobody know?

 

[Flipx99 5,000+ posts]

I haven't used any of the 07 line...I am pretty knowledge about the 05/06 lines but that doesn't help you.

 

[Anonymous 10+ year member]

does they have MLT?

 

[ThatChevyGuy 5,000+ posts]

lpf?

 

[dragnix 5,000+ posts]

does they have MLT?

i think that's only available on the AX, the md3d are still strappable tho

 

[Anonymous 10+ year member]

my MD3's have MLT low pass filter is set the same.

 

[Anonymous 10+ year member]

i went to take a look and when I was unscrewing the positive speaker terminals it sent a surge of power through my entire setup. Now whenever I hook the RCA's too my 4 channel amp it my door speakers have a horrible whining noise. What did I do I was just disconnecting the subs. And now my subs are always producing bass even with the volume turned down to 0 on the HU. I need help it is going back to the shop but they are the ones that installed everything and set it up like this. Tell me if I did something wrong please i would like to know.

 

[phyphoestilic 5,000+ posts]

U always take out the fuse when messing with wires. Seems to me like u were trying to take out the positive wires while the amp was on.

 

[LOUD 4DOOR 10+ year member]

i went to take a look and when I was unscrewing the positive speaker terminals it sent a surge of power through my entire setup. Now whenever I hook the RCA's too my 4 channel amp it my door speakers have a horrible whining noise. What did I do I was just disconnecting the subs. And now my subs are always producing bass even with the volume turned down to 0 on the HU. I need help it is going back to the shop but they are the ones that installed everything and set it up like this. Tell me if I did something wrong please i would like to know.

I think its your headunit of your getting funky sound at volume 0

 

[the727kid 10+ year member]

You blew the ground inside your HU.