Okay, i have a infinity 1211a amp. Its rated 1,300 RMS watts @ 2 Ohms. I'm thinking about powering a pair of Infinity Perfect 12.1 SVC in 2 Ohms load. Will this give 1,300 RMS watts to each woofer, or to the pair of woofer meaning each sub will share half the 1,300 watts..??..
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Re: Infinity 1211a @ 2 Ohms
Your subs will share the amp output. And if you are not careful, you'll end up blowing them. The amp puts out 1300 watts RMS at 2ohms, the subs have an RMS power range of from 75-350 watts, and you'll be driving them with 650 watts each. A better power match would be to series the subs to present an 8ohm final load. This will reduce the output power to a level the subs can handle. Or you could buy 2 more 12.1's and connect them series-parallel for a 4ohm load and each sub would still be getting 325 watts RMS, just about the maximum they are rated to handle.
Hope this helps.
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There is a way to do this, but it is awkward and is not recommended. Depending on the impedence of the door speakers and how many there are. I am assuming from your posting that you have a 2 channel amp. If you wire the two speakers for each seat in series (creating a 4ohm load), then wiring both seats in parallel (putting the load to 2ohms), these could theoretically be wired to one channel. BUT, this will not give you balance left and right. Also, if the impedence is different, you run the risk of damaging the amp.
This is an 150 RMS amp, but the ratings say it'll push 2 10's. You probably won't get much out of that amp with a 1230 watt subwoofer. The subwoofer you are wanting to run is 300 RMS, so you'll get half the power you could be pulling. But it would do okay I guess. Nothing like what you could get with a different amp though. You need like a 1000 watt amp to get the most out of your sub. But "YES" you can use them together.
The old Rockford-Fosgate was probably producing the rated power. The Sony is most likely overrated. But, it's supposed to be stable on each individual channel down to 2 ohms and will deliver 65 watts RMS into that load. So to get the most from it, your best bet would be a pair of 4 ohm speakers paralleled to each channel. A relatively efficient speaker like the Kicker 07DS600's shown here should provide pretty good sound.
If you like a lot of bass, you definitely need to consider another amp. The SP2X-300 is only rated at 170 watts RMS into 4 ohms mono. That would barely be enough to power one small sub. You do not specify what brand and model your subs are, their impedance, or their power handling capacity. But for any subs, your best power solution is to add together the individual RMS power handling capacity and select a monoblock amp that provides close to the maximum at the impedance they will be wired to present. For example, if your subs are 4 ohms and have a maximum RMS of 250 watts, you would want an amp that outputs abour 500 watts into 2 ohms (2 4 ohm subs wired in parallel = 2 ohm load). An ideal amp in that example would be the Alpine MRP-M500 which outputs 500 watts RMS into 2 ohms.
your Volfenhag 12" subs are rated at 1200 watts they are only 600 watts rms and the Rockford punch p4004 is only 200 watts rms so the answer is yes it will work but if you get a amplifier that pushes out 500 - 600 watts rms you will love the sound from subs
there is nothing wrong with the Rockford amp it just wont pound out the bass as hard but the good news is you will never blow the subs with it
when buying amps or subs make sure to look at rms rating that is the true power they actually have ie. (sub box says 1200 watt you think powerful but if you divide it in 1/2 you actually get 600 watts rms) don't get me wrong that's a nice rating. for a sub but you will want to match that number with the amps rms rating or lower. The RMS is what makes the car pound the higher the RMS the better
hope this helps
you are going to need an amp that can supply the right amount of rms power to make it sound good. these sony subs are rated for 380 watts rms. so in order to find an amp that will supply two, you must multiply that figure by two. so you will need an amp that can supply around 500 to 750 watts continuously (or rms). also you are going to want an amp that is either class d or class ab rated. these amps are built to push subwoofers exclusively and will give you the best efficiency and sound out of your subs. you will also want to get an amplifier is a monoblock amp, and not a stereo amplifier. make sure the amp can put out that rms rating at 2 ohms as two 4 ohm speakers equal 2 ohms wired in parallel. i have a kenwood kac9152d that puts out about 2000 watts max at 2 or 1 ohms (900 watts rms) that i used with my two sony xplod 10's for about 2 years. it was kick ***! now i dont know if you need that much power but they will handle it as long as you dont push them too hard for long periods of time, otherwise you might end up blowing them up! (depending on the box size that is, and the quality of it as well...)
i have years of car audio installation experience and can help with setting up and wiring any mobile entertainment system you can imagine. may i ask what kind of music you listen to and what kind of box do you have for these subwoofers?
Amplifier Class AB Number of Channels 2 RMS Power (4 ohms) 120 watts x 2 channels RMS Power (2 ohms) 200 watts x 2 channels RMS Power (1 ohm) Not Stable Bridged RMS Power 400 watts x 1 channel Total RMS Power Output 400 watts Peak Power Output 1000 watts watts x 1 channel Minimum Impedance Unbridged 2 ohms Minimum Impedance Bridged 4 ohms THD at Rated RMS Power 0.1% Speaker Level Inputs No Preamp Outputs 1 pair Built-in Crossover High-pass (HP), Low-pass (LP), Full (AP) High-Pass Crossover Frequency 40 - 250 Hz Low-Pass Crossover Frequency 40 - 250 Hz Subsonic Filter N/A Signal-to-Noise Ratio N/A Channel Separation N/A Bass Boost 0 - 18 dB Bass/Gain Remote Yes Fan Cooled Yes Fuse Rating 20A x 2