Hybrid90

I want to get this amp http://reviews.cnet.com/car-amplifie...-30628201.html and use the 800 X 1 watts with a 2 OHM load.

Now my question is what type of OHM load sub do I buy that can be used with the specs above?

A dual voice 2 OHM sub or a dual voice 4 OHM sub?
The "dual" part kinda confused me..

VO...

iTrader: (25)

Dual 2 ohm coils can be configured to drop either a 1 or 4 ohm load.

Dual 4 ohm coils can be configured to drop either a 2 or 8 ohm load.

That is it. So you would need the dual 4 ohm sub.

Hybrid90

So now I know I need the dual 4 ohm sub but going further into the question...

So if I was to buy a dual 4 ohm sub as stated from the seller.. when I get it home.. do I need to "configure" it wiring wise to use it with my amp or just plug and play? Thanks in advance.. I'm kinda retarded when it comes to electrical specs crap

VO...

iTrader: (25)

You will have 2 sets of "+" & "-" binding post on the sub, one set per voice coil. You will need to configure the sets in a "parallel" configuration with each other so collectively they have a single output load of 2 ohms. This is what you amp will see.

Try this link. It is a tutorial on how to wire subs.
http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

VO...

iTrader: (25)

...

VO...

iTrader: (25)

that'll be $19.95 to my paypal account...

Hybrid90

Haha, thanks for the quick answer and informative link but I don't have $19.95 to spare cuz I just spent all my paycheck on the amp and sub Thanks again for your help!

VO...

iTrader: (25)

This is a common phenomenon to us Z owners

NP

Hybrid90

Hey vo78.. I got another ohm question for ya.

I have four 60 watt speakers at 4 ohm each for my front and rears but the amp I have has the specs 75 Watts x 2 into a 4 Ohm load
150 Watts x 2 into a 2 Ohm load

How do I wire up all 4 speakers to work with only a 2 channel amp?
I know I have to wire up 2 speakers together to get a 2 ohm load to use the 150 watts X 2 feature.

So correct me if I'm wrong.. I take 2 speakers and hook up negative to negative and positive to positive making it a 2 ohm load then just hook it up to one of the channels? Then do the same for the other 2 speakers? Am I right here? Please include a diagram if I'm wrong.

Oh one more thing.. will I damage the 4 ohm speakers if I was to wire them up to get a 2 ohm load? Thanks in advance

DVFlyer

iTrader: (18)

^ Correct.

You won't damage the speakers simply hooking them up this way... overpowering them is another story.

Hybrid90

Thanks DVflyer! Another question I have is with the monoblock amp.

Say if the amp puts out 1000 x 1 at 2 ohm.. I can safely run a pair of subs rated rms 400 watts at 4 ohms with the monoblock amp and both the amp and subs won't be damaged just as long as I match the ohms correct?

Sorry if I'm going back and forth asking questions.. it's just cuz I'm in the process of installing my system and don't want to **** anything up.. thanks for everyone's help so far.

THEDUKE

iTrader: (24)

This will actually not work. Since you are bridging the amplifier from 4 channels to two channels the amplifier does not see the load you are putting into it. It actually sees half of what you put into it when you bridge it. So if you were to wire it up the way you are planning the amplifier will actually see a 1 Ohm load, which it is not stable to.

THEDUKE

iTrader: (24)

The reason this works is becuase the amplifer is already one channel, you are not bridging it. So whatever load you put into it, that is the load it sees. Hope this makes sense.

Hybrid90

Hmm ok now I'm confused cuz DVflyer says yes and you're saying no. I was under the impression that if you present the amp with whatever ohm load the amp is set on.. then it would be able to run it safely, in this case.. two 4 ohm speakers wired together for a 2 ohm load.

StreetOC192

iTrader: (7)

Hopefully I am understanding your question, but I agree that it probably won't work. The reason I say this is because there aren't too many 4-channel amps that are 2-ohm stable when bridged. They are almost always only stable to 4 ohms, due to the reasons that THEDUKE gave.......the amp is actually going to 'see' 2 ohms to each amp segment to combine to a 4 ohm per bridged channel load.

THEDUKE

iTrader: (24)

When you bridge an amp it see's half of what you present it.

Hybrid90

No no, the amp in question to begin with is NOT a 4 channel amp but rather it's a 2 channel amp 150 x 2 into a 2 ohm load. So if I have 4 speakers (front and back) at 4 ohms each.. can't I just combine 2 speakers together to get a 2 ohm load and hook it up to one of the 150 x 2 channel amp rated at 2 ohm each? That was my original question...

I think you're mixing up the amp channels..
Keep in mind I was asking about 2 separate amps in 1 post.. hehe kinda confusing huh.

MIAPLAYA

iTrader: (3)

If you are going to use one subwoofer you need the dual 4 ohm voice coil subwoofer. You will parallel the voice coils (on the sub connect + from one side to + on the other and them from there to the amp, repeat for the -) If you are using two subwoofers buy the dual 2 ohm. You will need to series the subwoofer voicecoils and then parallel the subs together. Check out the FAQs at www.jlaudio.com as they have plenty of diagrams to describe this.

DVFlyer

iTrader: (18)

Yes, wire them in parallel and the result will be a 2 ohm load (two single 4 ohm voice coil subwoofers only). Keep in mind what Miaplaya said if you buy dual voice coil subwoofers.

DVFlyer

iTrader: (18)

Correct.