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-   -   How to power two subs off of one amp! (http://www.wranglerforum.com/f274/how-to-power-two-subs-off-of-one-amp-184708.html)

burton861 09-03-2012 03:23 PM

How to power two subs off of one amp!
 
Im planning on adding two subs in my jeep, but because of money I would like to do it one sub at a time

So if my final result will be two 300 watt RMS (2 ohm) subs, what would be the best way to power them off of one amp?

And how can I use this same amp to safely power just one of the subs before I get the second?

massbass22 09-03-2012 03:31 PM

I would run the single sub at 2 ohms with a mono amp and when you get the second sub wire them together for 1 ohm. Assuming the amp OS one ohm stable of course. Or you could just run a two channel amp and just run one sub off one of the channels until you get the second sub.

massbass22 09-03-2012 03:31 PM

Is* not os

MHjk 09-03-2012 03:33 PM

hook up in parellel

burton861 09-03-2012 03:39 PM

The mono amp route sounds more dangerous- but if I went that way how powerful would it need to be to power both subs safely and efficiently?

And if i went the 2-channel amp route how powerful would the amp need to be?

Bronek 09-03-2012 03:42 PM

There is nothing dangerous about a mono amp. The only thing to note is the capacities and outputs of both amp and sub. If the subs are a SVC 2 ohm, then you can run them at either 1 ohm or 4 ohm, depending on what your amp is rated for and what the subs can handle. Giving us the specs (or at least model numbers) on amp and subs would allow me to tell you how to best configure your setup.

massbass22 09-03-2012 03:44 PM

It's not dangerous at all if the amp is 1 ohm stable. It's very common set up infact. If you are looking at getting 300 rms subs than that's where you want to be around. I would think 200w to 250 w per channel at 2ohms would be fine. A 500rms mono would work if you wired in parallel

massbass22 09-03-2012 03:45 PM

Quote:

Originally Posted by Bronek
There is nothing dangerous about a mono amp. The only thing to note is the capacities and outputs of both amp and sub. If the subs are a SVC 2 ohm, then you can run them at either 1 ohm or 4 ohm, depending on what your amp is rated for and what the subs can handle. Giving us the specs (or at least model numbers) on amp and subs would allow me to tell you how to best configure your setup.

Agree!

burton861 09-03-2012 04:02 PM

These are the subs I plan on getting.
Alpine Electronics of America, Inc.
and
Alpine Electronics of America, Inc.

They are both the same sub, 300 RMS, dual voice coil

I am going to put the second sub in the stock jk sub box

I need to know what type of amp and how big to get it to run both of these... and just one of them for about a month or so

Ray finkle 09-03-2012 04:23 PM

i would buy a 500 watt mono amp that and hook up the one sub to 4 ohms. Most amps are not stable at 1 ohm. When you get the second sub wire it to 4 ohms and you will be at 2 ohms. When you have the one sub at 4 ohms most 500 watt mono amps are going to be between 250 and 300 watts at 4 ohms. I would use the alpine MRX-M55 it would work perfect on one or two of those subs.

I would not use the stock box for one and not the other. you want the subs to be in the exact same box or they are not going to sound right.

massbass22 09-03-2012 04:26 PM

I don't think the stock enclosure would handle that much power too well. Too flimsy for that many watts.


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