need help on amp selection

[rookiet3]

I have 2 12'' Polk Audio DXi 124 dual voice coil subs and need a stable amp. I have a pyramid 2 channel 1000w right now but I can can only listen for a short while before it overheats and cuts out. Please help

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[garychoffmann 10+ year member]

What's your power and ground situation? How high is your gain? What's your budget?

 

[mylows10 5,000+ posts]

I have a matching Polk amp for you

 

[Spl4200]

^^ grab that

 

[rookiet3]

I have a stock radio and I'm using a line output converter. It has gain knobs and two ground wires but I don't know where to ground and or how to tune gain.my power is a 4g along with my ground.grounded out to the rear seat bolt in my Mazda 3 sedan.

 

[rookiet3]

I have a stock radio and I'm using a line output converter. It has gain knobs and two ground wires but I don't know where to ground and or how to tune gain.my power is a 4g along with my ground.grounded out to the rear seat bolt in my Mazda 3 sedan.

 

[bbeljefe]

If you have no noise in the system you don't need to ground the LOC. Gain setting is simple but can seem complicated and since you say you don't know how to set it, we'll assume you have it too high. Lastly, seat bolts often make poor grounds.

I would find a good location where you can grind the paint off the frame or a strut tower and move the ground to there. Then, do a search here for gain setting and read up. If you have questions, feel free to ask them after you've gotten some familiarity with the process through reading.

 

[macsdad 10+ year member]

Not to thread jack but, my rear ground is on a bolt that is already attached to the frame, it was sanded as best as the space would allow, would I be better off with making a ground point seperate from said bolt?

 

[mylows10 5,000+ posts]

Not to thread jack but, my rear ground is on a bolt that is already attached to the frame, it was sanded as best as the space would allow, would I be better off with making a ground point seperate from said bolt?

I most cases yes William. The bolt is usually tac welded and doesn't give the best point to ground. Better to make your own if possible especially on unibody cars

 

[macsdad 10+ year member]

Thanx jim, I was hoping not to have too. In the midst of the ho alt install, I will take care of it.

 

[mylows10 5,000+ posts]

Usually is best