DVC Wiring Advice Needed

[trader]

I just purchased a DVC sub driver. I should have posted this before my
purchase....Anyway, I bought an Infinity Perfect Sub 12.1D.
Each voice coil is 4 ohms. I can wire the voice coils ( I believe in
series)so that the driver becomes 2 ohms. The amp I have puts out
about 70 watts per channel at 4 ohms. Bridges it puts out 200 watts at
2 ohms. I'm wondering if I will be putting too much of a load on the
amp and if the 2 ohm load will effect SQ. My other alternatives are:
1. Only use one voice coil and still bridge the amp (not sure of the
effects of this). 2. Buy a more powerful amp and run 4 ohms to each
voice coil. I would like to use the amp I have now but I would
consider a new purchase if that is the absolute best method. In
retrospect I probably should have bought a SVC driver. Oh well.
Thanks in advance.

[Bruce Chang]

"trader" > wrote in message
ups.com...
>I just purchased a DVC sub driver. I should have posted this before my
> purchase....Anyway, I bought an Infinity Perfect Sub 12.1D.
> Each voice coil is 4 ohms. I can wire the voice coils ( I believe in
> series)so that the driver becomes 2 ohms. The amp I have puts out
> about 70 watts per channel at 4 ohms. Bridges it puts out 200 watts at
> 2 ohms. I'm wondering if I will be putting too much of a load on the
> amp and if the 2 ohm load will effect SQ. My other alternatives are:
> 1. Only use one voice coil and still bridge the amp (not sure of the
> effects of this). 2. Buy a more powerful amp and run 4 ohms to each
> voice coil. I would like to use the amp I have now but I would
> consider a new purchase if that is the absolute best method. In
> retrospect I probably should have bought a SVC driver. Oh well.
> Thanks in advance.
>

Wiring the two voice coils together in series (amp+ to coil1+, from coil1-
to coil2+, from coil2- to amp-) will give you 8 ohms (4+4) while wiring them
in parallel (amp+ to coil1+ to coil2+ from amp- to coil1- to coil2-) will
give you 2 ohms (1/ [1/4 + 1/4]). If you like you can just wire each
channel to one of the voice coils and you'll get 140 watts total. Otherwise
you could wire them in parallel and run 2 ohms and bridge your amp and have
200 watts total. I don't know what the difference would be in regard to
sound quality. My gut instinct is to say the difference would be
negligible.

-Bruce

[NOBASS]

I just purchased a DVC sub driver. I should have posted this before my
purchase....Anyway, I bought an Infinity Perfect Sub 12.1D.
Each voice coil is 4 ohms. I can wire the voice coils ( I believe in
series)so that the driver becomes 2 ohms. The amp I have puts out
about 70 watts per channel at 4 ohms. Bridges it puts out 200 watts at
2 ohms. I'm wondering if I will be putting too much of a load on the
amp and if the 2 ohm load will effect SQ. My other alternatives a
1. Only use one voice coil and still bridge the amp (not sure of the
effects of this). 2. Buy a more powerful amp and run 4 ohms to each
voice coil. I would like to use the amp I have now but I would
consider a new purchase if that is the absolute best method. In
retrospect I probably should have bought a SVC driver. Oh well.
Thanks in advance.

I am running into a similar situation right now with a set of DVCs I am looking at purchasing. What I've found out is that only running one coil is not recommended - it will affect the power handling capability plus a number of the electrical parameters will be affected.

Are you sure the amp is capable of handling 1 ohm mono? That's a pretty heavy load. It would be the "ideal" setup as apparently DVCs work better with identical signalgoing to both coils, but in this case I'd run it in stereo 4 ohms to be on the safe side.

Mark

[MZ]

> I am running into a similar situation right now with a set of DVCs I am
looking at purchasing. What I've found out is that only running one
coil is not recommended - it will affect the power handling capability
plus a number of the electrical parameters will be affected.
>
> Are you sure the amp is capable of handling 1 ohm mono? That's a
pretty heavy load. It would be the "ideal" setup as apparently DVCs
work better with identical signalgoing to both coils, but in this case
I'd run it in stereo 4 ohms to be on the safe side.
>
> Mark

FYI - the power handling shouldn't decrease too terribly, and the shift in
electrical parameters can be negated by shorting the unused coil.

[[email protected]]

Many amps can not handle a 2 ohm load when bridged. Some of the higher
end amps can.

Maybe better to get a dedicated sub amp. That perfect will want more
than 140 watts.

[NOBASS]

FYI - the power handling shouldn't decrease too terribly, and the shift in electrical parameters can be negated by shorting the unused coil.

Hello MZ...

So do you think the Thiele/Small parameters should stay the same? The JL website says using only one coil is a no-no, but I remember a friend doing this once and it worked for him. I was planning on a sealed enclosure anyway.

Mark