Can someone please explain how I should wire my new sub to get the most out of both the sub and the amp? Thanks a lot.

Sub: 10" Alpine Type R Dual Voice Coil (2 ohm each) (SWR 1021 d)

Amp: Rockford Fosgate 250a2 (2 channel)

 

First off man, you need alot more of an amp for that sub. You have to remember that the r's are 2000 peak! I am running two of them, on a 1600x1 kicker amp at 1 ohm. It's really clean and hits real hard.

Wire the coils parallel, and bridge the amp to one channel. You'll run the amp at 2 ohms, which will be a little better for power, but you should give the r more power. Don't overwork your amp, or you'll blow it. Don't mess with gain too much, and the gain should never be all the way up, that's a killer for the amp.

 

The sub has a peak power of 1,000 watts.

The RMS power range is 100-300 watts.

Pretty close to my amp.......rated at 250 RMS x 1 (which is actually 378 per the birth certificate).

http://www.crutchfield.com/S-3...R1021

 

****! Didn't see the 1021d, my bad man, i have the 1041d's with 2000 peak. Either way, wire them parallel and the amp you have is good for those version. The 1041d's take alot of power

 

the only difference between the two models are the voice coils (dual 2 ohn or dual 4 ohm) the power handeling is exactly the same between the two of them.

Power Handling

Power Handling Capacity (Peak) : 1000W
Power Handling Capacity (RMS) : 300W
this is information directly from alpine. i agree that they would take almost as much power as you throw at them, but 2000 watts is crazy.

 

man, itr_dc2 REALLY doesn't know the type-r. 2000 watts is ridiculous from a type-r. i think the peak for the new type-x is like 1500 or sumthing.
alpine subs DO NOT like to be over powered. i'm not sure if the amp is 2 ohm stable or not. if it is, wire it parallel. parallel the sub, and bridge the amp. the only REAL consequece from turning the gain all the way up that you'd get would be distortion. 3/4 is good.

 

DO NOT parallel the coils with the amp bridged. That amp is only 4ohms stable bridged. If you parallel two 2ohm coils, you have a load of 1ohm!!!

I don't know if that amp is one of the series old enough to not have thermal protection or not, but even if it is don't. If it does it will go into protection and shut down, if it doesn't it will get VERY hot and(as old as it is) probably fry.

Just run the amp in stereo with one channel per voice coil. Simple.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">DO NOT parallel the coils with the amp bridged. That amp is only 4ohms stable bridged. If you parallel two 2ohm coils, you have a load of 1ohm!!!

I don't know if that amp is one of the series old enough to not have thermal protection or not, but even if it is don't. If it does it will go into protection and shut down, if it doesn't it will get VERY hot and(as old as it is) probably fry.

Just run the amp in stereo with one channel per voice coil. Simple.</TD></TR></TABLE>

Exactly, that's why i use a kicker amp running at 1 ohm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trouble codes &raquo;</TD></TR><TR><TD CLASS="quote">man, itr_dc2 REALLY doesn't know the type-r. 2000 watts is ridiculous from a type-r. i think the peak for the new type-x is like 1500 or sumthing.
alpine subs DO NOT like to be over powered. i'm not sure if the amp is 2 ohm stable or not. if it is, wire it parallel. parallel the sub, and bridge the amp. the only REAL consequece from turning the gain all the way up that you'd get would be distortion. 3/4 is good. </TD></TR></TABLE>

Thanks for the input, i was told 2000 peak from the 1041d, guess i'll have to yell at my buddy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">DO NOT parallel the coils with the amp bridged. That amp is only 4ohms stable bridged. If you parallel two 2ohm coils, you have a load of 1ohm!!! What he said
I don't know if that amp is one of the series old enough to not have thermal protection or not, but even if it is don't. If it does it will go into protection and shut down, if it doesn't it will get VERY hot and(as old as it is) probably fry.
What he said
Just run the amp in stereo with one channel per voice coil. Simple.</TD></TR></TABLE> Not what he said wire voice coils in series 4OHM load bridge amp to mono [stable at 4OHMs] although in stereo [each voice coil to a channel] will work,no 2 channels of an amp are exactly the same. hope this helps. 94

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote"> Not what he said wire voice coils in series 4OHM load bridge amp to mono [stable at 4OHMs] although in stereo [each voice coil to a channel] will work,no 2 channels of an amp are exactly the same. hope this helps. 94</TD></TR></TABLE>

It doesn't matter. The differences aren't siginificant enough.

If this were really a problem there would not be any pros using one amp per voice coil in competitions.

 

This is the way that I was thinking it should work.......

bridge the amp (positive from the left channel and negative from the right channel) and then making the following connections.




This should show the amp a 4 ohm load (which it is stable at) and get the most out of my amp, correct?

 

Yep that will work fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pnthr30 &raquo;</TD></TR><TR><TD CLASS="quote">This is the way that I was thinking it should work.......

bridge the amp (positive from the left channel and negative from the right channel) and then making the following connections.




This should show the amp a 4 ohm load (which it is stable at) and get the most out of my amp, correct?</TD></TR></TABLE>