Dual Voice vs. Single Voice. - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 01-04-2006
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Dual Voice vs. Single Voice.

What is the difference? Is it that BIG of a difference? and how exactly does it work?

I am looking into building a full Alpine system for my Colorado. Decided to stick with 1 brand. Also going to try and do all the installs myself minus the deck, since its free install at Best Buy.
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  #2  
Old 01-04-2006
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dual voice coils offer more wiring options... as far as sound quality, i'm pretty sure theyre EXACTLY the same.
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  #3  
Old 01-04-2006
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ok, thanks. saved me some cash.
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Old 01-05-2006
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most of the time a daul will handle more power and i think will hit harder. i can't comfirm this cause i have only had daul voice coil subs. i think the magnet is bigger also but i'm sure if you go to a shop somewhere near you they will let you hear some of each
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  #5  
Old 01-05-2006
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dual allows you to wire the resistance different ex. dual 4 ohm can be wired to a super clean 8ohm config or 2ohm config for pounding bass.
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  #6  
Old 01-05-2006
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A dual voice coil sub allows multiple wiring configurations. You can send both output channels (left and right) from the amp to each voice coil, effectively doubling the wattage to the sub.

On the other hand, if you are using a bridged-output amp, you can run the increased output (in a single, or bridged channel) from the amp to the sub, and bridge the two voice coils together. This will cut the sub's resistance (in ohms) by half. The net effect is having an amp that is twice as powerful.

Word of caution, make sure that the bridged resistance load on the sub is not any lower than the rating for the amp. For example, a sub with two voice coils that are rated at 4 ohms each, is essentially a 2 ohm sub when you bridge both voice coils together. If your amp is only rated to nothing lower than a 4 ohm load, you'll see the mysterious blue smoke come from the amp. If your amp is rated down to 2 ohms, you'll be fine, at least in this example.

Yes, dual voice coil subs cost more. The only advantage that I can see is that the bass from the left and right channels make it to the sub. Most amps, when run in a bridged mode, cut out the right channel's signal (I think...), so only bass in the left channel makes it to the sub. This is not so critical anymore, as most music is recorded in stereo. If you're listineing to an old Led Zepplin or Who album, you might have an issue though. Otherwise, buy a single voice coil sub and run your amp in bridged mode.

My days of loud stereos ended 11 years ago when I graduated high school, so someone else might be able to shed more light on this subject.
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  #7  
Old 01-05-2006
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Its all about wiring, unless the manufactor does it on purpose a SVC and a DVC are exactly the same minus the wiring. If a sub says 400 watts RMS SVC, then each VC on the DVC can handle 200 watts RMS. NEVER POWER ONLY ONE VOICE COIL!
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  #8  
Old 01-05-2006
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Quote:
Originally Posted by barrman
dual voice coils offer more wiring options... as far as sound quality, i'm pretty sure theyre EXACTLY the same.
Not absolutely true.

I would take you to science class but i don't feel like it.

I'll just say that the way you wire the subwoofer for a certain impedance can change the parameters of the subwoofer and change how it sounds in a box. but if you're not worried about it, don't.

You just have to work it out the way you like it.
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Old 01-05-2006
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Quote:
Originally Posted by rolla_guy72
Not absolutely true.

I would take you to science class but i don't feel like it.

I'll just say that the way you wire the subwoofer for a certain impedance can change the parameters of the subwoofer and change how it sounds in a box. but if you're not worried about it, don't.

You just have to work it out the way you like it.
hehe. dude. if you have a 200w rms svc sub, and the exact same sub, but dvc, with the same rms ratings, wired at the same impedance, i guarantee you wouldnt be able to tell a difference. period.

OF COURSE if you change the impedance you might get a sq/spl change, but then youre dealing with 2 similar subs at 2 different impedances.

i'm saying that with all other variables being equal, svc vs dvc will sound the same. thanks for sparing me the science lesson

Last edited by barrman; 01-05-2006 at 04:20 PM.
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  #10  
Old 01-05-2006
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im gonna call BS on some of this stuff in here

since he dosent really know exactly the difference between dvc and svc, ill give every piece of audio in my truck below if he can tell the sound difference between which way he wires the sub(not loudness, sq sound)
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  #11  
Old 01-05-2006
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Well, if youre calling BS, then tell us / me why. I am trying to find out what the best is. If youre not going to explain what is BS and why, then youre not really helping.

Not attacking, i just want to know what the best is and why. I plan on getting good stuff, not something I can afford quick.
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  #12  
Old 01-05-2006
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Its for wiring mainly not SQ or loudness.

If you want a 2ohm load you can order a SVC with 2ohm or a DVC with 4ohm coils.


Basically you need to match the Ohm rating of your speakers to what
your amp will do. It doesnt matter if they are SVC or DVC.

I personally think its a waste to go all 1 brand.. its sorta like saying
"I bought an HP monitor printer computer and camera because I wanted
all one brand" Thats fine but you will spend extra.

Also when I was more into the scene.. alpine subs were considered to be
overrated and priced for what they are.

Oh and bamaboy what exactly were you calling bs? was confused?
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  #13  
Old 01-06-2006
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dual 4 ohm can be wired to a super clean 8ohm config or 2ohm config for pounding bass.
8ohm will sound no different than 2ohm
most of the time a daul will handle more power and i think will hit harder
of the same model a Dvc will hold no more power than a single
the magnet is bigger also
no comment

bass from the left and right channels make it to the sub
bass is mono, it dosent have stereo channels, a true sub amp is a mono class D amp, more effiicient and are cheaper to make power out of, class AB(ie mostly 2 and 4 ch amps) sound better, although most wouldnt hear the difference on a sub anyway

Most amps, when run in a bridged mode, cut out the right channel's signal, so only bass in the left channel makes it to the sub no when u bridge it, you both channels together to form 1 channel

certain impedance can change the parameters of the subwoofer
only sub i know like this is the ascendent audio atlas and avalanch
which it changes the qtc of the sub


[/B]

these were the main ones, and just trying to correct this stuff DO NOT GET OFFENDED


also if you want to throw something else in here there are quad coils too
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  #14  
Old 01-06-2006
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Thanks.

Basically from what I have read and what I want, a SVC will be enough for me. Thanks for the input.
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  #15  
Old 01-06-2006
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wel these days its getting harder to find svc, unless its on cheaper subs, i cant think of any that are svc and expensive, maybe like 3-4
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  #16  
Old 01-06-2006
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NEVER HOOK UP EACH VOICE COIL TO A DIFFERENT CHANNEL LIKE STARTED ABOVE! The channels dont put out the exact amount of power, meaning the voice coils will be fighting each other and one will have slightly more power going to it then the other. In returned, fried sub.
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  #17  
Old 01-07-2006
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Simply put:

What is the difference between Dual voice coil and Single Voice Coil? Dual voice coils operate like two speakers in one. (Two sets of hook ups and everything) A single voice coil is a traditional speaker.

A dual voice coil sub gives you the same wiring options as 2 regular single voice coil sub.

Example: I have a single 12" sub, with dual voice coil each operating at 4 ohms. This grants me the option of running a 2 ohm or 8 ohm load on an amplifier. A single 12" sub with a single voice coil operating at 4 ohms can only be wired to run 4 ohms.

More here:
http://www.crutchfieldadvisor.com/IS...fers_dual.html
http://www.crutchfieldadvisor.com/IS...impedance=SVC8

However all of the above has nothing to do with quality. Only loudness. Different wiring setups can affect ohm load on the amp, which affects it's power output. The only thing to be concerned about here is that you operate your amp at a load it is stable.
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  #18  
Old 01-07-2006
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did you have Best Buy install your HU yet? If not thn Don't even though they say its a free install you still pay them 40 dollars in parts( like a mounting kit wire connectors an harness and othe Bull crap) do it yourself screw Best buy
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  #19  
Old 01-07-2006
quest51210
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Quote:
Originally Posted by 86YOTA
NEVER HOOK UP EACH VOICE COIL TO A DIFFERENT CHANNEL LIKE STARTED ABOVE! The channels dont put out the exact amount of power, meaning the voice coils will be fighting each other and one will have slightly more power going to it then the other. In returned, fried sub.
not if your installer uses an oscilliscope or a simple MM can do the trick but not as accurate you can run one to each
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  #20  
Old 01-07-2006
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Quote:
Originally Posted by KARPE
did you have Best Buy install your HU yet? If not thn Don't even though they say its a free install you still pay them 40 dollars in parts( like a mounting kit wire connectors an harness and othe Bull crap) do it yourself screw Best buy
Well, if I didnt have them install, I would still have to buy those parts anyways. But I think I might have a hook up. One of the people that rents from me at work does Car Audio installs. He is a friend (get ready for this) of my wife's friend's boyfriend. So, i kinda have double connections. If he wont hook me up cause he rents from me, maybe he will cause he is a friend of a friend. Anyways, I talked to his Wife today and she said he probably would, they could always use the extra money. I am assuming he would do side work for much cheaper than any car audio place.

As for the speakers, I think I am gunna go with the DVC Alpine 12" type R. Seems to be the best of what I am willing to spend. Doesnt need a huge box, so that is good.
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