Lanzar Opti 1234D and Lanzar opti 4000d?

Question

O.K. Thanks guys. Tell me this, I'm knew to this. I ran the neg to the pos and then the pos to the pos on the amp and the same for the neg,2 subs.The amp has 1 pos and 1 neg so i think once i ran the subs at 8ohms they where broken down to 4ohms, if im not wrong.The amp is 4000rms at 1ohm,3000rms at 2ohms,2000rms at 3ohms, and 1000rms at 4ohms. Subs are 1100rms 2200 max dual voice coil 4ohms. So did i hook them up right? And how high can i turn the amp now? i have it at a 1/4 and they sound good in a sealed box.A month ago the shop where i bought them hooked them up for me different and they fried.I got 2 new sets now. They ran the neg to the neg and pos to pos and then into the amp on both subs, remember one pos and neg on amp, i think they ran the amp into 1 ohm and turned the gain3/4 pushing 15rms to each sub. Any way can any one tell me if i wired up my subs right ? Is the sealed box good? And how high can i turn the amp gain if im running them at 4ohms?

Answer 1

Check these wiring options... two subwoofers, DVC @ 4 ohms:

http://www.rockfordfosgate.com/rftech/wo...

Answer 2

It sounds as if the wiring is right for a 4 ohm load. Series on the coils giving you an 8 ohm load per speaker. then parallel from there. Giving you a 4 ohm final load.

The gain settings are where you lost me. Remember, the gain is not a volume control. It is there to match the input voltage coming from the head unit.

I'll give you the quick rundown. You'll need two things a digital multimeter and a 50 hz test tone

1) turn off all of the bass boost. turn the bass setting to zero. turn the gain all the way down.

2) Disconnect the subs from the amp.

3) Play the test tone on repeat. With the volume set at about 75% of the head unit's capacity.

4) set the multimeter to VAC (volts alternating current)

5) connect the test leads to the speaker terminals. red to pos and black to neg., obviously.

6) with the test tone playing. slowly turn the gain up until you reach your desired output voltage. In your case it will be 63.25 volts

To figure out the output voltage on your own. use this formula.  Voltage = square root(Power*Resistance)

For instance,  1000watts*4ohms=4000 and the square root of 4000 is 63.25