amp/sub help

[eddiedeverell]

Hi all check the faq section, still confused, i'll make it short for you all. Iam getting a 12" alpine type R tonight, it is rated at 4 ohms. Iam planning on getting an amp soon as well. My question is, do I need to buy a 2 ohm amp or a 4 ohm? I dont understand that at all, I try not to post unless im really confused, and well iam!!!!

[StrtRacer98]

you can get a 2ohm amp, and bridge the sub to 2ohms ( i think ) not familiar with the stats on the alpine sub.

[eddiedeverell]

one 12 can hit good right? i heard it at the store sounded great. I get so confused about that ohm thing!!!!!

[Nikos95]

The 12" alpine type R sub is a 300 watts rms sub, so get an amp that will run 2ohms and give you between 300-400 watts, wire the voice coils in parallel and you will be good to go [img]smile.gif[/img]

[eddiedeverell]

thanks i appreciate that!! sounds like a plan

[eddiedeverell]

Is there somewhere on here that shows you how to wire them in parrallel? And one 12" should hit good correct?

[96firebird311]

In the modifications encyclopedia. Diagrams on how to wire your subwoofer.

The Alpine Type-R comes in two versions. SWR-1242D and SWR-1222D I believe. One has dual 4 ohm coils and can be wired a 2 or 8 ohm load. The other has dual 2 ohm coils and can be wired to a 1 or 4 ohm load. I know it may sound confusing, but it's really not. It's really important that we are certain on which model you have before we can make a solid recommendation on an amp. [img]smile.gif[/img]

And yes, one 12" Type-R will bump along nicely. [img]smile.gif[/img]

[Nikos95]

Originally posted by 96firebird311:
In the modifications encyclopedia. Diagrams on how to wire your subwoofer.

The Alpine Type-R comes in two versions. SWR-1242D and SWR-1222D I believe. One has dual 4 ohm coils and can be wired a 2 or 8 ohm load. The other has dual 2 ohm coils and can be wired to a 1 or 4 ohm load. I know it may sound confusing, but it's really not. It's really important that we are certain on which model you have before we can make a solid recommendation on an amp. [img]smile.gif[/img]

And yes, one 12" Type-R will bump along nicely. [img]smile.gif[/img]

Aww yes thanks for that correction, I had forgotten about the dual 2ohm version, a little harder to find in stores, but they do make them. And you are more than correct the Apline Type R kicks some massive bass and quite clean also. I would say it compares to alot of subs from 200-300$...

[eddiedeverell]

Hi all, its the 1242D RMS 500 peak 1500, also do you think a ported or sealed box would work better? What does the dual voice coil mean anyway?? sorry for all the questions, just want to make sure system sounds good, thanks.....

[eddiedeverell]

Sorry all forgot to add one more thing, when you give advice on an amp, please also consider that im married, have a son, and a mortgage!!! lol
Thanks for the help you all!!

[96firebird311]

Hahaha I know what you mean man. Life isn't cheap. [img]graemlins/rofl.gif[/img]

Dual voice coil just means that the sub has two voice coils instead of one. What does that mean to you? TWO PAIR of + and -'s. This increases wiring flexibility for the consumer. More options on how to wire the subwoofer(s) to the amp. With a one 12" dual 4 ohm sub, your choices are 2 or 8 ohms.

That's how you will want to wire your subwoofer to the amp. This will put a nominal load of 2 ohms on your amp.

So you will be looking for a monoblock (single channel) amp. One that does around 500W RMS into a 2 ohm load. So in the specs you're looking for 500WRMS x 1 @ 2ohms. Get it?
Here's a good example. The Audiobahn A8000T does 800WMRSx1@2ohms. Plenty for your Type-R. And for about $135 shipped. Many people hate on Audiobahn. They say that the amps don't output power they should etc. Well, I'll agree that they probably fall a little short. But I bet you still pull 650-700WRMS of clean power out of the A8000T. Plenty for you. Truth is, Audiobahn is king when it comes to quality vs. power vs. price.