how to wire 2 subs: 2 ohm or 4 ohm

[captaintiger]

I have a pair of oldish 10 inch subs. There are Phoenix Gold model AS104dvc 2 ohm speakers. I will power them with a mono amp that will provide either 450 Watts RMS at 2 ohms or 300 watts RMS at 4 ohms. Which is better? What are the pro's and con's of either set up.

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[UGHH]

I have a pair of oldish 10 inch subs. There are Phoenix Gold model AS104dvc 2 ohm speakers. I will power them with a mono amp that will provide either 450 Watts RMS at 2 ohms or 300 watts RMS at 4 ohms. Which is better? What are the pro's and con's of either set up.

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

 

[captaintiger]

I understand how to do the wiring. It seems I have the option of doing one or the other. Why pick one versus the other?

 

[UGHH]

You can't wire 2 2 ohm subs to 4 ohm.

 

[Slo_Ride 5,000+ posts]

are you sure that model number is right? are they dual 2 ohm subs or dual 4 ohm?

 

[captaintiger]

OK, so I just wire them per the wizard you referenced. It said 2 2 ohm subs can be wire to two ohms. Sorry for my idiocy. I'm new at this..

 

[UGHH]

OK, so I just wire them per the wizard you referenced. It said 2 2 ohm subs can be wire to two ohms. Sorry for my idiocy. I'm new at this..

No problem.

 

[captaintiger]

are you sure that model number is right? are they dual 2 ohm subs or dual 4 ohm?

I am not 100 percent certain as the subs are in enclosures. When I tested the the two wires coming out of the box with an ohm meter it read 4 ohms. Someone told me that indicates the are DVC. There are only two models of the AS104. Either SVC or DVC.

 

[Slo_Ride 5,000+ posts]

I am not 100 percent certain as the subs are in enclosures. When I tested the the two wires coming out of the box with an ohm meter it read 4 ohms. Someone told me that indicates the are DVC. There are only two models of the AS104. Either SVC or DVC.

yeah i'm not familiar with those subs and apparently neither is google. as for wiring 2 ohm or 4 ohm it all depends on the subs. thats why its important to know if they are dvc or svc, 2 ohm or 4 ohm.

 

[captaintiger]

I will have to take them out of the enclosure to be certain. I was able to locate the spec sheets for both the dvc and svc from a site that had archived all of the PG manuals from the past.

The spec sheet says the DVC version is 1.9 ohm and the SVC is 3.65 ohm (DC VC Res).

 

[captaintiger]

Actually, I just double checked. The part number I mentioned was wrong. The correct part no.s are XS104DVC and XS104SVC.

 

[CSCStang]

It's either 2 ohm svc, wired in series or 4 ohm dvc wired in series/parallel.

 

[captaintiger]

Mystery solved. I have taken both subs out and found that they are indeed model XS104DVC. It looks like the amp I have will work with this config. although probably a little too powerful given 350 watts from the amp going into these subs which are rated at Pe (thermal power handling) of 200 watts. No other wattage spec is given. According to the wizard (above) the wiring matches:

Two 2 ohm DVC speakers = 2 ohm load

(series/parallel) = 2 ohm load

Voice coils wired in series, speakers wired in parallel

Recommended Amplifier: Stable at 2 or 1 ohm mono

 

[CSCStang]

Mystery solved. I have taken both subs out and found that they are indeed model XS104DVC. It looks like the amp I have will work with this config. although probably a little too powerful given 350 watts from the amp going into these subs which are rated at Pe (thermal power handling) of 200 watts. No other wattage spec is given. According to the wizard (above) the wiring matches:
Two 2 ohm DVC speakers = 2 ohm load

(series/parallel) = 2 ohm load

Voice coils wired in series, speakers wired in parallel

Recommended Amplifier: Stable at 2 or 1 ohm mono

The amp isn't too powerful. You have to half the output because you're running 2 subs. So they'll each see around 175rms. They are 4ohm dvc, so you have to run them at a 4 ohm load or a 1 ohm load. Can't get a 2 ohm out of it.

 

[captaintiger]

The amp isn't too powerful. You have to half the output because you're running 2 subs. So they'll each see around 175rms. They are 4ohm dvc, so you have to run them at a 4 ohm load or a 1 ohm load. Can't get a 2 ohm out of it.

Confused. The spec sheet says they are 1.9 ohms. When I ran the wizard it says 2 ohms. What am I missing?