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  #13  
Old 09-09-2009, 09:27 AM
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Re: Alpine type r subs

It's hard to recommend any amp without first knowing the impedance of the subs.... you would ideally like to wire the two twelves down to a final impedance of 2 ohms. If you can/do, then any amplifier that's pushing 800-1,500 watts RMS @ 2 ohms would be sufficient.
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  #14  
Old 10-04-2009, 08:31 PM
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Re: Alpine type r subs

just like paul said, make sure it is well ventilated and you shouldn't run into any problems
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  #15  
Old 10-04-2009, 08:37 PM
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Re: Alpine type r subs

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Originally Posted by Chaoul1 View Post
Yup! Make sure the Alpines are ventilated. I think they will bolt the AMP behind your rear seat.
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Originally Posted by Micallef View Post
just like paul said, make sure it is well ventilated and you shouldn't run into any problems
Just to clarify... there is a science to porting a sub woofer enclosure. It's very driver dependent. Also, what the goals are of the user plays a huge role in enclosure design. You can't simply slap any driver into any random enclosure and expect it to sound remotely good. Not saying you two didn't know that, just clarifying for future readers.
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Old 10-05-2009, 04:34 PM
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Re: Alpine type r subs

I knew that Matt, but could you clarify and expand on your reply a bit?
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Old 10-05-2009, 04:51 PM
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Re: Alpine type r subs

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Originally Posted by A-Mart View Post
I knew that Matt, but could you clarify and expand on your reply a bit?
Well, I'm not sure what you'd like me to further clarify, lol.

An enclosure is easily the most important aspect to a sub woofers performance (not the amp, not the sub, yes the enclosure). The enclosure needs to be designed specifically for the sub that will be going into it, the goals the user has, and if there are any space constraints.

Sometimes the user manual for your sub will give you recommended enclosures, but they can be very peaky and not flat. I can model up the sub(s) you plan to use and tell you what would give you the flattest response (usually the most sought after response). Just let me know what you are looking to get out of the sub(s)and if you have any space constraints. Oh and what sub(s) you plan to use (I need brand, model, size, year if there are multiple versions) -- a product link to the manufactures website would be best.

No ported does not = louder... no sealed does not = better sound quality...not even close. The two most commonly used enclosure descriptions and they could not be more wrong.


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  #18  
Old 10-05-2009, 04:54 PM
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Re: Alpine type r subs

For example, here is mine modeled up in my enclosure... now keep in mind this does not account for in-cabin acoustics (transfer function / cabin gain). I don't believe there is a program out there that can.


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Old 10-10-2009, 11:28 PM
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Re: Alpine type r subs

well actually the m1000 will not power two type Rs. they are dual voice coil 4 ohms each so wiring in parellel would put them at 1 ohm which the m1000 cant handle 1 ohm. u should use the rockford fosgate 1001 if i remember correctly
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  #20  
Old 10-10-2009, 11:44 PM
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Re: Alpine type r subs

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Originally Posted by darknine View Post
well actually the m1000 will not power two type Rs. they are dual voice coil 4 ohms each so wiring in parellel would put them at 1 ohm which the m1000 cant handle 1 ohm. u should use the rockford fosgate 1001 if i remember correctly
They come in more than that one voice coil configuration.

And that amp could power two Type-R's @ dual voice coil 4ohm.
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Old 10-11-2009, 12:03 AM
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Re: Alpine type r subs

no it cant two type r dual voice coil would need to be put a 1 ohm and the alpine amp there cant operate at one ohm. and i never said there wasnt a single voice coil type r but its not as popular or as widely sold so i assumed it was a dvc
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  #22  
Old 10-11-2009, 12:12 AM
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Re: Alpine type r subs

i will say that it will power it but so will a 250 watt amp. but it will not power it properly which will result in clipping and improper cooling of the voice coils which will cause a blown sub so if u wanna go with that amp have fun. but when it blows before it should, then maybe the proper amp will be used and we can end this e-argue before it starts
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  #23  
Old 10-11-2009, 12:20 AM
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Re: Alpine type r subs

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Originally Posted by darknine View Post
no it cant two type r dual voice coil would need to be put a 1 ohm and the alpine amp there cant operate at one ohm.
Two dual voice coil 2ohm subs wire down to 2ohms. I think you are forgetting DVC 2ohm, DVC 4ohm, SVC 2ohm, SVC 4ohm, SVC(ect).

Quote:
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and i never said there wasnt a single voice coil type r but its not as popular or as widely sold so i assumed it was a dvc
See above (DVC 2ohm, DVC 4ohm)

Quote:
Originally Posted by darknine View Post
i will say that it will power it but so will a 250 watt amp. but it will not power it properly which will result in clipping and improper cooling of the voice coils which will cause a blown sub so if u wanna go with that amp have fun. but when it blows before it should, then maybe the proper amp will be used and we can end this e-argue before it starts
You are forgetting an important element to this discussion... ENCLOSURE! Or maybe lack thereof (IB...?). The bigger (cone size) and more (quantity) = less power required to get loud.
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  #24  
Old 10-11-2009, 12:22 AM
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Re: Alpine type r subs

im not worried about loud im worried about longetivity and proper powering. also last i recalled they dont have a4 different types of type r but let me check my dealer book again maybe i overlooked it.
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