Stupid ohm question

[DubtecV2]

I know nothing about ohms and wiring, that's why I'm here.

I have two Treo 12" TSX subs (DVC, 4ohm stable) that are powered by a Clif Designs 1000w 2ohm stable amp. I was told that because the subs are 4ohm stable and the amp is 2ohm stable the subs aren't getting the power they should. The amp has two outputs (500x2), the left sub is run positive and negative to the left output, and so on (basically, pos amp - pos sub, neg amp - neg sub).

Is it true that the subs aren't getting the power they should?

[93ex]

Are your subs dual 2 ohm voice coils, or dual 4 ohm voice coils? They were available in both configurations, and I hear the wrong numbers throw around rather often.

Oh to hell with it, I'll post all configurations anyway.

DUAL 2 OHM VC's
http://www.rockfordfosgate.com/rftech/wiringwizard/2_2ohmDVC_05ohm.gif

http://www.rockfordfosgate.com/rftech/wiringwizard/2_2ohmDVC_2ohm.gif

http://www.rockfordfosgate.com/rftech/wiringwizard/2_2ohmDVC_8ohm.gif

DUAL 4 OHM VC's

http://www.rockfordfosgate.com/rftech/wiringwizard/2_4ohmDVC_1ohm.gif

http://www.rockfordfosgate.com/rftech/wiringwizard/2_4ohmDVC_4ohm.gif

[benberr3]

yea i also have a problem with ohms and wiring...someone told me 2 ohm is better then 4 ohm i dont kno why or how maybe someone can explain ?

[TIM TIM TIM]

well generally 2 ohms makes more power then 4

[93ex]

yea i also have a problem with ohms and wiring...someone told me 2 ohm is better then 4 ohm i dont kno why or how maybe someone can explain ?

getting dual 4 ohm vc's on a sub increases the flexibility of wiring options. It also will allow you to get a cheaper amp (for the sake of argument) and get the same amount of power.

Lets say you have speaker X, that handles 400 wrms, with dual 4 ohm voice coils. The Dual voice coil (DVC) option lets you wire it to 2Ω of 8Ω, whichever suits your application. Now you start shopping for an amp for speaker x. If the speaker was a Single 4Ω voice coil youd have to find a 400 wrms amp. And at the average of a dollar per watt, thats a bit expensive.
Finding a 400wrms @ 2Ω amp will be easier on the wallet for sure.

[Rich]

To be more specific to your application, you want to wire up your subs to get as close to or equal to the minimum ohm stable by your amplifier. The more you are over the minimum, the less power you will get from the amplifier.

If your subs are indeed dual 4 ohm voice coil, this will be your best bet, but you will still be sacrificing half of the power that the amp is capable of delivering:

http://www.rockfordfosgate.com/rftech/wiringwizard/2_4ohmDVC_4ohm.gif

If you are fond of the amp, ditch the speakers and pick up two dual 4ohm speakers (JL 12w3V2 dual 2 ohm) and run them in this configuration:

http://www.rockfordfosgate.com/rftech/wiringwizard/2_2ohmDVC_2ohm.gif

If you are fond of the speakers, ditch the amp and pick up something (Jl audio 1000/1) that puts out the same wattage at 1ohm (stable) and run them like this:

http://www.rockfordfosgate.com/rftech/wiringwizard/2_4ohmDVC_1ohm.gif

[benberr3]

alright well i dont know if im going to sound like an idiot for this but is 2 ohm better for deep bass ?

[Notladstyle]

you get the same bass from 4 ohm or two ohm. The only difference is that it will take twice as much voltage to produce the sound at 4ohm than 2ohm. if you equipment can handle the load, use 2ohm and your power output will be higher. The only drawback to lower ohm loads is that at lower volumes its easier to get noise - but subs dont usually respond high enough to make it noticable.

[benberr3]

is having more power output better ?

[Notladstyle]

is having more power output better ?

more power means louder and harder bass, but audio equipment is also less efficient at lower ohms - that means more distortion(not very noticable) and more HEAT so keep it cool.

[benberr3]

alright man thanks a lot you've helped me out a lot

[DubtecV2]

Yes, my Treos are 4ohm DVC.

NoTLaDStyle tested the box -- ended up showing, what, 5ohms? BUT, they subs are louder with my Clif Designs 2ohm amp than they are with a bridged Kenwood 4ohm ampm which produced about 100watts more RMS that the Clif :dunno:

I always thought two 4ohms (like a dual voice coil) wired together would give you 2ohms (therefore each output on my box would be 2ohms, which would mate to my 2ohm amp), but maybe I'm wrong?

Wow, I feel like a complete idiot now, lol!

[Rich]

I always thought two 4ohms (like a dual voice coil) wired together would give you 2ohms (therefore each output on my box would be 2ohms, which would mate to my 2ohm amp), but maybe I'm wrong?

2 4ohm single voice coil speakers can give you 2 ohm. Your speakers are dual voice coil, therefore you can get either 1ohm or 4ohm.

[DubtecV2]

2 4ohm single voice coil speakers can give you 2 ohm. Your speakers are dual voice coil, therefore you can get either 1ohm or 4ohm.

That's both subs wired together, correct? My two subs aren't wired together -- there are two seperate pos-neg terminals on the back of the box. Wouldn't each terminal be 2ohm?

[Notladstyle]

Yes, my Treos are 4ohm DVC.

NoTLaDStyle tested the box -- ended up showing, what, 5ohms? BUT, they subs are louder with my Clif Designs 2ohm amp than they are with a bridged Kenwood 4ohm ampm which produced about 100watts more RMS that the Clif :dunno:

I always thought two 4ohms (like a dual voice coil) wired together would give you 2ohms (therefore each output on my box would be 2ohms, which would mate to my 2ohm amp), but maybe I'm wrong?

Wow, I feel like a complete idiot now, lol!

SOrry dude, i didnt explain it out good enuff

you have dual 4ohm subs
INSIDE the box they are wired in series to 8ohm on each
to the AMP we got 5ohms because of native resistance. for all practical purposes you have a 4ohm setup, my meter is really sensitive and it showed up at 4.6ohms which rounds to 5ohms.

You need to open the box up and change the inside wiring to 2ohms on either side(wire them parallel) as of now they are wired in series to 8ohm.