I've just got a JBL gto 7001 Amplifier, which is Mono, but has 2 speakers connections, I have 2 12" subs with single 4 Ohm voice coils, but i want the Amp to see a 2 Ohm load, do I connect 1 sub to each speaker out on the Amp ?, or bridge the 2 speaker channel outs, from the Amp ???
I'm Sure this is a Simple question for You guys, but I want to be Sure...
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Re: JBL Sub Amp Wiring Please
It seems rather redundant to bridge a mono amp. Unless the instruction manual states otherwise, i would assume that one speaker output is identical to the other (ran in parallel, like an A or B speaker, not like Left or Right), and you would present the amp with a two ohm load by wiring one speaker to each output. Bridging it may or may not work, but, again, it just seems redundant.
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It is confusing with the 4 channels it gives you but you really only need to connect it to one or the other positive and negative terminals. The amps channel setup looks like this + - + - . You can connect to the first positive and negative, the second, or combine them. I had mine installed by a professional which is how I know. Also if you want to run your amp at 2 ohms then connect the subs voice coils in a parallel circuit which means that all positives are connected to each other and the same goes for the negatives. it should match the impedances of both sub and amp. Hope this helps!
First of all.
Using two different kinds of sub woofers, is not an option, as these two sub woofers have different specifications and you should never mix sub woofers.
Now the better choice from the 2, would probably be the Rockford. (cant be sure without knowing the models, power handling is also a factor in how well either of the sub woofers will play, but Rockford as a rule makes better sub woofers than Sony does)
In my opinion, both the sub woofers deserve a better amplifier than what Boss has to offer.
However to connect either of these sub woofers, you would need to determine how many voice coils it has and how many OHM the voice coil/s are.
If it is a DVC (dual voice coil) and each voice coil is 4 OHM or 2 OHM, then you can connect one voice coil to one channel of the amplifier and the other voice coil to the other channel of the amplifier. If it is a DVC 2OHM you can also connect it wired in Series/Series to give a 4OHM load and should be connected to the BRIDGE dedicated speaker outputs of your amplifier.
If it is a SVC (single voice coil) and it is 4 OHM, then you can connect the sub woofer to the designated speaker outputs of your amplifier that states BRIDGE.
DO NOT run the amplifier in BRIDGE mode at 2 OHM as this will probably damage the amplifier.
You need to get another amp for your sub. I would say if you want good quality go for MTX because I have had amps from MTX and never had a problem. what you need to know is look at the fuses on the amp if there are 3 of the 25 amp fuses on there then it should push out about 750 watts but on MTX they under clock the amp so it will push about 800 at 14.4 volts for that you will need a 4 gauge wiring kit with a 60 amp fuse in the fuse link. As far as your other amp hook up the speakers and tweeters to that but be sure to tune in down and you would need a 8 gauge wiring kit. I hope this helps you.
You will not be able to get the full power from the amp without ruining your sub. The amp puts out full power into a 2 ohm load so option -A- is to just run one coil off the sub and it will absolutely pound -until you roast the coil.Then you can use the other coil and roast that one too. But since you do not want to roast anything-first thing to do is take it to the store and trade it in for a dual 4 ohm sub-wire the coils in parallel and there's your 2 ohm load to achieve max power from the amp. Problem there is that you will have WAY too much power for the sub to handle and you'll blow it anyways (in time).Best thing you can do is get an identical sub(dual 2-ohm) wire the coils in series which will make them 4 ohms per sub then parallel the subs to get back down to 2 ohms overall-you get max power from the amp and hopefully enough speaker to handle it.Hope that helps.
If the amp is 1200 watts at 2 ohm stable you will want to set up the speakers as parrallel and bridge the amp. That means conncect the speakers with + to + and - to -. Look at the amp connections. Usually thereare connects that look like this:
+ - + -
If yours look like this use the diagram on top. You will use the + for the left ouput on the amp to the right - on the amp. This will allow you to use all the power from the amp. Be sure to lower the gain as to not pop the speakers or amp.
The BP300.1 is a mono (1 channel) amp. You cannot bridge a mono amp. Bridging is a method of combining the outputs of 2 or more channels of a multichannel amp into a single mono load. On your amp you would connect a single sub to one of the +'s and one of the -'s (either one is OK, they are connected internally). The other pair of terminals is just for convenience, making it easier to connect, if you want to power 2 subs.
It's not really made to run a dual 2ohm sub. What you can do though is wire the sub like this:
we'll call you subs voice coil A and B. Wire it like this A's(+) to (+) on amp; then A's (-) to B's (+), then B's (-) to (-) on the amp. This is known as series / parallel wiring it will effectively make your amp see a 4ohm mono load.
You can download the installation manual from the link below:
It has the following diagram plus other hookup info...
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