question about dual 4 ohm voice coils

[pwayzjellyroll 10+ year member]

my friend just purchased 2 AW1251T audiobahn dual 4 ohm vc woofer's he has a rockford puch 501x amplifier which the specs are 65 watts RMS x 4 at 4 ohms 125 watts RMS x 4 at 2 ohms 250 watts RMS x 2 at 4 ohms in bridged mode but now i need to know how would i wire this to get the most power? i want to get 250 watts to each sub in 4 ohms but i don't know how to go about wiring this, is it even possible? all help is appreciated.

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[PhatTonyDeMarco 5,000+ posts]

Hmm.. Well you did not make a good choice of an amp, 4 channel amp for subs is not really needed. You could just put each voice coil into a channel of the amp, so you would be getting 130w to each sub. You will not be able to get the full 250 x 2 (500w) out of this amplifier with those subs.

 

[pwayzjellyroll 10+ year member]

yeah he already had that amp, i told him he should get a new one but i was racking my brain and i figured the only solution would be giving them each the 65 watts and he will just have to upgrade, he just upgrades his subs from two punch z's which i guess are a tad old, hopefully even though these have less watts they will sound better

 

[TeenWolf 10+ year member]

Agree. Not a good amp for 2 dual vc subs. The best setup you will get here is hooking the amp up for four channels, hence driving a channel to each vc with a 4 ohm load and getting 65 watts RMS. You won't get 125/channel b/c this requires a 2 ohm load and there's no way to wire those two subs for 2 ohm load on each coil. You can't bridge it all together b/c both subs wired in parallel will produce a 1 ohm load. The amp is rated at 4 ohms when brigded. I really believe your friend should invest in a better amp.

 

[RandyJ 10+ year member]

Agree. Not a good amp for 2 dual vc subs. The best setup you will get here is hooking the amp up for four channels, hence driving a channel to each vc with a 4 ohm load and getting 65 watts RMS. You won't get 125/channel b/c this requires a 2 ohm load and there's no way to wire those two subs for 2 ohm load on each coil. You can't bridge it all together b/c both subs wired in parallel will produce a 1 ohm load. The amp is rated at 4 ohms when brigded. I really believe your friend should invest in a better amp.

Actually, smart one, he can get 130watts to each sub. Its quite simple. He has a 4channel amp, he has basically 4resistors. Each resistor has an impeadance of 4ohms. His amp is rated at 65wX4 @ 4ohms. Wire one channel to each voice coil. Since each sub has two voice coils, that is 65+65 which, as most of you know, equals 130.

And re-reading what you wrote, you mentioned he should set up his system like this, I guess you just didnt catch the fact that 65 to each coil would be 130 to each sub.

 

[Chevyaudio 5,000+ posts]

yeah if you wire it up like that ^ get 130 per sub, and just tell him to upgrade in the future

 

[tRiGgEr 5,000+ posts]

Why do you guys make it sound so hard for new guys?

Wire each one like this. Connect them to there own channel. You will have 2 unused channels. So each one will be getting 125 watts.

 

[RandyJ 10+ year member]

Dont know what is more simple than wiring eac channel to a coil.....

 

[Chevyaudio 5,000+ posts]

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whats so hard about take the positive and negative from each VC and connect them each to a channel on the amp.

 

[tRiGgEr 5,000+ posts]

He has a 4channel amp, he has basically 4resistors. Each resistor has an impeadance of 4ohms.

That would not be simple to me If I was new to this... I'de be like resistors what? Who is impeadance and who does he work for?

And I would not wire the VC to thier own channel. Most amps boards are not equally perfect. Giving the exact amount to each VC would be a far cry from reality. Granted the amount of difference might be minute but it is there, So I tend to recommend the alternative of wiring @2ohms.

 

[berettagtz 10+ year member]

Can someone tell me how to wire 2 alum12q audiobahns (dual 6 ohms) to Mtx 1501d amplifier???

 

[PhatTonyDeMarco 5,000+ posts]

Well your ideal wiring for those subs would be wired down to a 1.5 ohm load. However, your amp is not 1 ohm stable, it is 2 ohm stable however. I am not sure if it would run well on a 1.5 ohm load. You could try it, and if the amp goes into protect mode then you will need to rewire it.

Audiobahn and its odd coil configurations...

Anyway, wire both subs like this:

And I know that shows DVC 4 ohm subs, they dont have DVC 6 ohm sub diagrams. So just replace those "4"s with "6"s, and that final load of "1" with "1.5"

 

[berettagtz 10+ year member]

thats how i wired my other subs (dual 4), and it blew them up. I know the ones that i have now are 6 ohms, but should I be worried?

 

[TeenWolf 10+ year member]

Actually, smart one, he can get 130watts to each sub. Its quite simple. He has a 4channel amp, he has basically 4resistors. Each resistor has an impeadance of 4ohms. His amp is rated at 65wX4 @ 4ohms. Wire one channel to each voice coil. Since each sub has two voice coils, that is 65+65 which, as most of you know, equals 130.
And re-reading what you wrote, you mentioned he should set up his system like this, I guess you just didnt catch the fact that 65 to each coil would be 130 to each sub.

Yeah, that's what I meant..."hence driving a channel to each vc with a 4 ohm load and getting 65 watts RMS".

Two channels per sub, so 135 each.

 

[TeenWolf 10+ year member]

Yeah, that's what I meant..."hence driving a channel to each vc with a 4 ohm load and getting 65 watts RMS".
Two channels per sub, so 135 each.

Oops..Typo..130 for each sub.