I have a 2 ohm DVC sub (10" Kicker comp VR), and I have it wired like this. On the Voice coils, I have pos jumped to pos; and the neg jumped to the neg. is this the Ideal set up? I had it figured all out when I installed it a year ago i think, but i've just been thinking about it latey. and the amp is a 350 (at 4 ohms I think) Alpine MONO amp.

BTW, I tried a searck and didnt come up with much.

Thanks guys.

 

You actually have that sub wired to 1 ohm. I am surprised your amp will run that low. Does the amp get really warm? To get it in series wiring @ 4ohm, run one positive to one negative and run the other positive to the positive on the amp and the spare negative to the negative on the amp.

 

That amp should be going in protect mode... If it the m350 alpine you will only be able to push 250 watts at 4 ohms and 350 watts at 2 ohms. If it pushing it at 1 ohm I might leave it just for the hell of it. Some amps will go lower that what they say although it not really manufactured to do that. You drop it back to 4 ohms and your gonna lose power. I wonder how much it putting out at 1 ohm. LoL

 

What does it mean when the amp gets warm?

 

It means your amp uses the chassis as a heatsink for the transistors. Most rockford fosgate amps are like that. You don't have to replace the fan and they last along time. Most electronic stuff can take alot of heat upto a point. If it shuts off playing and the amp is extremely hot. You have probably got to much ohm load on the amp.

 

I have a Coustic 800DB so if I turn the bass down will that be straight? Can I put a fan on it?

 

I don't really understand the question. Amps are suppose to get hot when they are under a heavy load. If it didn't come with a fan on it, then it wasn't designed for one. I wouldn't put a fan on it if it wasn't designed for that. If its not cutting off then it not to hot. I hope this helps.

 

Ok, sorry for the absense but:

The amp is an Alpine MRD-M301, rated at 350w at a 2ohm load, and only 175w at 4ohm. So theres not really any way to keep my 2 ohm DVC sub at 2 ohms unless I just use only one voice coil, and don't even hool the other one up? So, I guess the amp is pretty good huh? Its been running like this for a year now! the sub hit's pretty hard, and its never shut down from overheating, and it's behind the back seat. I guess I just keep running it like it is I am curious as to what kind of power it's putting out at 1 ohm. the sheet that came with the amp where it was tested at the factory befor leaving said it was really putting out 403 watts at 2 ohms.

anyways, thanks alot guys!

 

Don't never just hook up one voice coil to an amp. That will mess up the speaker. I'd think it would be pushing at least 500 watts. You'd have to have the amp bench tested at 1 ohm to see. Thats a dang decent amp if it holding a 1 ohm load.

 

My advice is that if you have to live with this sub and amp combo for a while, just connect the sub to the amp@4 ohms. Balance the bass with the rest of your system and forget about how it's connected, how many watts everything is CAPABLE of handling, and how many MORE watts your amp COULD be producing if it was wired in some other fashion. All this kind of thing is so overrated it isn't even funny. Do you realize how much actual difference in CAPABILITY there is to the listener between a system that is CAPABLE of producing 175 watts RMS and a system that is CAPABLE of 350 watts RMS? Very little. Actual mathematical calculations will say 3dB CAPABILITY. Real world results may be a lot less. I stress the word "capability" because that is what RMS ratings are, capabilties. You may never, ever push an amp to produce its rated power in a vehicle under normal listening conditions. In other words, at the listener's position, the result may be the same with 175 watts into 4 ohms as it would be with 350 watts into 2 ohms. At a comfortable listening volume, both set-ups may be really producing 125 watts power.

This Alpine amp is not great for heavy duty use with subs. But it will do for a while if you use common sense and use it properly.

 

What is in a bench test and how much do they usually cost? I have only had my system in for about 2wks and the way it sounded when it was first wk it doesnt now