Calculate Ohms after box Rise???

[stl_style 10+ year member]

I wired 2 D2 subs to a mono amp with 2 sets of speaker input terminals. Each sub is wired down to 1 ohm, verified with multimeter. If I wire the amp utilizing all 4 terminals the amp should see what load? I noticed when I utilize only one set of terminals, by putting the four wires together the amp doesn't like it, is this .5?

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[DUMPED 10+ year member]

is this a monoblock amplifier, 2chn or 4 chn?

you're looking at either

1ohm stereo probably as your best bet.. of course thats all dependant on if your amplifier can accomodate that

 

[soundstreamer 10+ year member]

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

 

[DUMPED 10+ year member]

there are different sites to look at..

you can also go here too

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

another important part is what type of amplifier you have...

good luck

 

[DukeNut 10+ year member]

depending on your amp, it could be .5 ohm or 1 ohm. Many amps tie the speaker terminals together internally, thus being a parallel connection at the amp.

 

[stl_style 10+ year member]

THere was a considerable difference in the ouput when I combined 4 wires into 2, thinking that was .5, B/C the amp didn't like it, lights dimmed very bad. My question now is: Is the amp seeing 1 ohm or 2 ohms utilizing all 4 terminals? the wiring configuration on the fosgate site says 2 ohms.

depending on your amp, it could be .5 ohm or 1 ohm. Many amps tie the speaker terminals together internally, thus being a parallel connection at the amp.

 

[roarzorz 10+ year member]

Sounds like you're wired to 0.5ohm.

 

[DukeNut 10+ year member]

Let us know what amp you have and I'm sure we can help you out.

 

[Dope Boy Magic 10+ year member]

2 d2 subs wired either to 2 ohms(series parallel) or a half ohm (parallel)

 

[stl_style 10+ year member]

Let us know what amp you have and I'm sure we can help you out.

T2001BD, I combined the 4 wires into 2 for and used 1 set of speaker terminals just to see what happend for a very short period, maybe 10 secs. My **** car almost shut off it was pulling soo much current (of course I'm exagerating) voltage went down to 11.9 so I reconnected it utilizing all 4 terminals. Thing is each sub is wired to 1 ohm and I think the amp is seeing 2 ohms:crap:, b/c combining the speaker wire obviously is .5 ohms. My 1 ohm stable amp is seeing 2 ohms and I don't have the electrical yet to run both of my T20001BD's //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif and my subs are dual 2's so It's either run them at 2 ohms, roughly 1500watts or get some different subs for temporarily use. Probably, would enjoy playing with more subs too

 

[Dope Boy Magic 10+ year member]

2 more d2 wire all up to 1 ohm but right now with the 2 +/- the amp should still se the same load, try + conect the negative from the first to the positive of the second and then the second negative to the am using only 2 terminals should give you the 2 ohms

 

[Dope Boy Magic 10+ year member]

 

[ultimate157 5,000+ posts]

FYI, never try to factor box rise into how you should wire your subs to your amp. Death for either or both could occur.

 

[stl_style 10+ year member]

The subs are wired in series parallel, so I'm seeing 2 ohms now.

 

[Dope Boy Magic 10+ year member]

once you get the hang of ohms you dont need paper to calculate it out