Sub woofer/Amp wiring help
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From: Manitoba, Canada
Sub woofer/Amp wiring help I have two Infinity 12dvq dual voice coil 4 ohm subs.
My amp is an Infinty 1211a
The subs are in a subthump t-top box.
The amp has outputs for two subs...so i was thinking i would wire one pair of outputs to one sub. The other pair to the other sub.
According to their site that would look like this
Giving me 2ohms on each side i guess.
They do not have an example of wiring up two speakers for 2 ohm, just 4 ohms.
Is this because if i do 2 ohms on each side, you add it up for 4?
I am confused now as to how to wire these speakers with my amp. Any help greatly appreciated.
My amp is an Infinty 1211a
The subs are in a subthump t-top box.
The amp has outputs for two subs...so i was thinking i would wire one pair of outputs to one sub. The other pair to the other sub.
According to their site that would look like this
Giving me 2ohms on each side i guess.
They do not have an example of wiring up two speakers for 2 ohm, just 4 ohms.
Is this because if i do 2 ohms on each side, you add it up for 4?
I am confused now as to how to wire these speakers with my amp. Any help greatly appreciated.
not sure about infinity it may be different . i have my fosgate set up so that you take + on one voice coil and wire it to the - on the other on the same speaker do this to both speakers then wire the amp one channel + and - to one speaker on the unused + and -. you will be bridging the speaker to itself thus creating 2 ohms per speaker. like i said though this works for rockford fosgate and may not work for you. i would suspect it will but be carefull and dont crank it right off. do you have a warrenty on them just in case lol iv,e never seen this not work i did on another sub as well bot cant remeber the name
the bottom picture you have shows what i was saying but it is hooked up to only one channel yuo did say you have a 2 channel amp correct if so wire per the bottm configuration except use one channel per speaker
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Here is what it says:
854 watts RMS x 1 channel at 4 ohms and ≤ 1% THD + N 1300 watts RMS x 1 channel at 2 ohms, 14.4V supply and ≤ 1% THD + N
Ahh..it says that it is a single channel amp with two sets of terminals to make it easier to hook up two subs.
854 watts RMS x 1 channel at 4 ohms and ≤ 1% THD + N 1300 watts RMS x 1 channel at 2 ohms, 14.4V supply and ≤ 1% THD + N
Ahh..it says that it is a single channel amp with two sets of terminals to make it easier to hook up two subs.
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the infinity 611a and 1211a while not advertised as 1ohm stable they are, like some slightly older jbl amps there is no power output increase but they are stable. My buddy runs a 1211a at 1ohm and has been for over a year not a single problem
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Thread Starter
On The Tree
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From: Manitoba, Canada
Thanks....basically was the 2nd diagram in my 1st email.
Can i wire the speakers to separate outputs on the amp? Since it is signal channel with two pairs of terminals that would be ok?
Can i wire the speakers to separate outputs on the amp? Since it is signal channel with two pairs of terminals that would be ok?
Originally Posted by BrentHamm
Thanks....basically was the 2nd diagram in my 1st email.
Can i wire the speakers to separate outputs on the amp? Since it is signal channel with two pairs of terminals that would be ok?
Can i wire the speakers to separate outputs on the amp? Since it is signal channel with two pairs of terminals that would be ok?
Originally Posted by jimmy 2 Times
okay and???? what is the difference if it is 1 or 2? he is still going to see the same ohm load
1 channel he will be at 1 ohm or 4 ohm.
2 channel he would be at 2 ohm on each channel or 4 ohm bridged.
About 98% of 2 channels aren't class D either so (assuming it was the same power) he'd be stressing the electrical system much more with the 2 channel amp.
2 channel amps aren't meant for bass, lets leave that up to real amps
Ok. Here's how it would be to the AMP:
You have what looks like 2 sets of terminals. Really they are and they aren't. To your eyes, there ARE 2 terminals, but inside the amp the 2 POS (+) connect together into 1 and the same with the NEG (-). So to the Amplifier, there is just 1 set of terminals. To you it looks like 2. It's made that way for more flexibility in wiring.
That amp is not "bridgeable". It's a SINGLE channel amplifier. There is no way to sum power across 2 channels if there is only 1.
Basically if you don't follow the diagrams shown exactly, it's not really a problem. You just need to wire up each subs coils in series and you could then connect each sub to a terminal. It would be the same thing as this here.
It's the same overall ohms if you do this. Because of the explination
You see where each sub connects to each other on the + side and the Negative? You can actually do that same thing by making each sub 8 ohm by connecting one set of coils to the next. Hold on a couple minutes. I'll draw something up to make all this make sense.
(BTW 95bat, I finally know why the audio engineers I've talked to said it's better to connect the subs in series and then parallel each set together. Remember the Le thread and link? About electrical energy stored in the coils? Transient Response? Series doubles what each sub has electrically!!!)
You have what looks like 2 sets of terminals. Really they are and they aren't. To your eyes, there ARE 2 terminals, but inside the amp the 2 POS (+) connect together into 1 and the same with the NEG (-). So to the Amplifier, there is just 1 set of terminals. To you it looks like 2. It's made that way for more flexibility in wiring.
That amp is not "bridgeable". It's a SINGLE channel amplifier. There is no way to sum power across 2 channels if there is only 1.
Basically if you don't follow the diagrams shown exactly, it's not really a problem. You just need to wire up each subs coils in series and you could then connect each sub to a terminal. It would be the same thing as this here.
It's the same overall ohms if you do this. Because of the explination
You see where each sub connects to each other on the + side and the Negative? You can actually do that same thing by making each sub 8 ohm by connecting one set of coils to the next. Hold on a couple minutes. I'll draw something up to make all this make sense.
(BTW 95bat, I finally know why the audio engineers I've talked to said it's better to connect the subs in series and then parallel each set together. Remember the Le thread and link? About electrical energy stored in the coils? Transient Response? Series doubles what each sub has electrically!!!)
Last edited by Richiec77; Jul 19, 2007 at 05:05 PM.