So I currently have a d2 icon wired to one ohm in a ported box running off at sundown sae 1200 v2. I also have 2 fi ssds d1(s), I built a sealed box for them and wired them in parallel; on the dmm it reads .7 ohms. My vehicle is a buick lesabre which has 130 amp alt. With the icon my electrical is great, the lowest i see is 14.0 (13.8 or so with the a/c on) at full tilt while at a stop light or something. I put the fi's in, a direct swap. I left the amp setting the same. My voltage is horrible, dropping into the 12s at full tilt at highway speeds. So i turned down the gain, pretty much a 1/4 turn back and my voltage is just as bad. My lights flicker horribly and the voltage isnt stable at all, my amp even went into protect. I double checked my wiring, all the positives are wired together/ all the negatives are wired together; parallel right? I put the icon back in today, turned the gain back up and the voltage is as stable as ever before, staying in the 14s. I just dont get it, can anyone explain this?

It could be a combination of having the SSD's wired slightly lower and having less box rise with the SSD's.

Sounds like a wiring problem on the SSD's. I would pull them out and check each coil individually to make sure there's no mechanical problems with the subs themselves. If that checks out, start from scratch and rewire them.

I assume you have the SSD's in series-parallel wiring?

I had a similar problem once, but it was because one of the coils went bad. Like Impious mentioned, check out the SSDs and see if there's a problem.

I know its been a really long time lol but anywho, I got questions and im pretty rusty on wiring configurations.But anyways I finally got around to pulling the ssds out of storage (brainstorming lol) and checking them with a dmm. Definitely confused, all the coils read 1.4-1.5(yes i measured them individually); those would be considered d2 correct? I bought them used and could swear I bought as d1's, but that's besides the point.

So I wire them up, in what I believe is parallel; all postives hooked together and same for negatives, do I have that right? Wired together they read .7-8which is what I want but after looking up wiring cconfigurations I feel like its wrong. Advice please.

It could be a combination of having the SSD's wired slightly lower and having less box rise with the SSD's.

I agree with this,the lower load from the SSD's causes the amp to work harder(more strain on electrical)

I know its been a really long time lol but anywho, I got questions and im pretty rusty on wiring configurations.But anyways I finally got around to pulling the ssds out of storage (brainstorming lol) and checking them with a dmm. Definitely confused, all the coils read 1.4-1.5(yes i measured them individually); those would be considered d2 correct? I bought them used and could swear I bought as d1's, but that's besides the point.

So I wire them up, in what I believe is parallel; all postives hooked together and same for negatives, do I have that right? Wired together they read .7-8which is what I want but after looking up wiring cconfigurations I feel like its wrong. Advice please.

http://www.the12volt.com/caraudio/woofer_configurations.asp

I might consider taking a guess that two 1,000 watt speakers in a sealed box will draw more power(less efficient and more draw on the electrical system) than one 1250 watt speaker in a more efficient ported speaker box.  Are your ssd equipped with the High QTS?  Even if they are I am thinking that the same stands to be true, however I have been wrong before

1.4 ohms dc resistance per coil would be D2 coil configured subs.  If you indeed have all the coils and the two subs wired in parallel you only have a .5 ohm nominal load on your amp and that would be the reason for your problems.  If they were D1 coil subs that would be a .25 ohm nominal load and I doubt the amp would even begin to run with it.

 

 

Specs from Fi's website.

 

DUAL 1 | DUAL 2   Fs: 30.1 Hz | 30.1 Hz Re: 0.7 Ohms/coil | 1.4 Ohms/coil

 

 

 

You need to be sure they're wired for a 2 ohm nominal load, wired like below.

 

So when I wire them parallel, the dmm is showing .7-8. Isnt that close enough to a 1 ohm load for my amp? So ported enclosures are more efficient? My plan was to use both ssds in a 4 cu ft box tuned to 32 hz on my sae 1200 if I had the wiring correct.

Just standard ssd's, no high qts. Theyre a few years old when they were still rated for 800 watts.

So when I wire them parallel, the dmm is showing .7-8. Isnt that close enough to a 1 ohm load for my amp? So ported enclosures are more efficient? My plan was to use both ssds in a 4 cu ft box tuned to 32 hz on my sae 1200 if I had the wiring correct.

Just standard ssd's, no high qts. Theyre a few years old when they were still rated for 800 watts.

 

thats all fine. what you're measuring with the dmm is the resistance of the subwoofers coil (just a big spool of wire). The impedance that the amplifier will see is essentially 1 ohm.  This isn't a necessary concept you really need to understand but if you want to learn more here's a link. 

http://en.wikipedia.org/wiki/Electrical_characteristics_of_dynamic_loudspeakers

 

a ported box for those subs at 4-5 cu ft net will be great. 

Ok I guess my actual question now is: Is .7-8 ohm for the two dual 1.4 subs wired in parallel an accurate reading?

Too me it just seems to far off what 12volts diagram shows (2 dual 2s in parallel=.5 ohm)

1.4 ohms dc resistance per coil would be D2 coil configured subs.  If you indeed have all the coils and the two subs wired in parallel you only have a .5 ohm nominal load on your amp and that would be the reason for your problems.  If they were D1 coil subs that would be a .25 ohm nominal load and I doubt the amp would even begin to run with it.

 

 

Specs from Fi's website.

 

DUAL 1 | DUAL 2   Fs: 30.1 Hz | 30.1 Hz Re: 0.7 Ohms/coil | 1.4 Ohms/coil

 

 

 

You need to be sure they're wired for a 2 ohm nominal load, wired like below.

 

Edit: nvm I overthought it a little.

Edited April 18, 201411 yr by SacredTanakh

Ok I guess my actual question now is: Is .7-8 ohm for the two dual 1.4 subs wired in parallel an accurate reading?

Too me it just seems to far off what 12volts diagram shows (2 dual 2s in parallel=.5 ohm)

 

measure each individual coil's dc resistance (which should be around 1.4 ohm) and do the math. you should get .35 ohm assuming 1.4 ohm per coil. .35 ohm dc = .5 ohm nominal.

 

If you're getting anything different than you didn't wire something correctly, your subs are boned, or your meter is jacked.