New amp, subs barely move

[RDSHunter 10+ year member]

Just installed my new Cadence TXA1000D monoblock amp to my two JL 12w3v3s. Went from pushing 500 rms x1 @ 4 ohm to 1000 rms x1 @ 1 ohm. I was expecting to see my subs move a lot more than they did but the opposite is true. I know the wiring is right and have played with the gains and my HU settings but they still wont move like I know they should. Any suggestions?

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[mylows10 5,000+ posts]

check and see if out of phase

 

[RDSHunter 10+ year member]

Tried reversing my wiring and even the rca's, also played with the phase shift switch

 

[mylows10 5,000+ posts]

disconnect one see if the other hits harder,if it does then reverse the other subs wires,see if they move the same or more ,then check the ohms with a dmm

 

[RDSHunter 10+ year member]

Rated rms of the amp at 2ohm is higher than max rms of the sub, how safe is it to test that?

 

[mylows10 5,000+ posts]

it will be fine just keep the volume down ,you should be able to tell at lower volumes too ,

 

[RDSHunter 10+ year member]

Individually they both hit the same, hardly at all. Dont have a dmm. Thanks so far at least

 

[mylows10 5,000+ posts]

somethings not right ,either the wiring all messed up or the amp isn't working right.how are the subs wired up + to + and - to - both subs then to the amp for a 1 ohm load

 

[LosIsATool 5,000+ posts]

What are yor filters set at?

 

[Joseph7195 10+ year member]

You have single 4 ohms voice coils, so both together your only seeing 2 ohm. That's the reason for your lack of power. You aren't seeing as much power with your new amp because it's not meant to put out max power at 2 ohm. I hope this helps Bro!

 

[RDSHunter 10+ year member]

The subs worked fine with my amp that i took out minutes before putting the new one in. I have the wiring set up like so:

L sub + -> R sub + -> Amp +

L sub - -> R sub - -> Amp -

Tried wiring both pos to the amp and both neg to the Amp as well.

I also tried playing with all of the filter settings and saw no dofference as i moved them

 

[RDSHunter 10+ year member]

You have single 4 ohms voice coils, so both together your only seeing 2 ohm. That's the reason for your lack of power. You aren't seeing as much power with your new amp because it's not meant to put out max power at 2 ohm. I hope this helps Bro!

The subs are both 2 ohm SVC subs, each meant to run at 500 rms. The new amp puts 1000 rms @ 1ohm, 650 rms @ 2ohm and 350 rms @ 4 ohm

 

[Bass Addict 10+ year member]

do you have a sub level on the hu ? if so turn it up

 

[Joseph7195 10+ year member]

That's cool, I lookIed up the speaker on Sonicelectronics and it said single 4 ohm. I wished I could have helped you better. I hope you find your problem soon man.

 

[mylows10 5,000+ posts]

that may help