Best box for Alpine Type R?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=30656
Printed Date: May 09, 2025 at 9:27 PM
Topic: Best box for Alpine Type R?
Posted By: alex75
Subject: Best box for Alpine Type R?
Date Posted: April 19, 2004 at 9:22 AM
OK, after much consideration I finally decided to buy a Type R 12, should be here in a few days. What kind of box will the sub be happiest in? I'm looking for something that slams w/out sacrificing SQ, so I'm thinking about building a slotted port design. I've been told that the factory built box for the R is ridiculous for both SQ and SPL. I'de like to try to copy that design, but need specs. Any ideas fellas????
Replies:
Posted By: DYohn
Date Posted: April 19, 2004 at 10:24 AM
A slotted port design is the worst possible enclosure for SQ. It is fantastic for SPL. Type R's sound best in a 1.0 CUFT sealed enclosure and will give you mucho SPL as well... ------------- Support the12volt.com
Posted By: alex75
Date Posted: April 19, 2004 at 11:01 AM
Thanks, I definately trust your advice. However, I think I'de like to have a little more boom than a sealed box can offer. I don't compete or anything so I don't mind giving up a little SQ. How about something in the middle-a standard ported box built to spec? If you feel adamently about a sealed box, then that's what I'll do.
Posted By: DYohn
Date Posted: April 19, 2004 at 11:04 AM
No, no, I don't feel adamantly one way or the other! :) Just letting you knw the options. Slotted ports tend to be a little less musical than round ports, but some folks say they can't hear the difference. Best boom for the buck is always ported, and the Type R can certainly boom. Do what suits you, not me! ------------- Support the12volt.com
Posted By: alex75
Date Posted: April 19, 2004 at 12:30 PM
I checked the Alpine site for box specs. It gives info for a sealed(.7-1. cuft) box, but nothing about ported. Where can I find spec for a ported box? Can I simply use the dimensions of the Alpine Type R factory built slot port box and substitute a 3 or 4" round port? For all I know, the manual that comes w my sub may have the info I need, but I would like to have a box ready when the sub arrives.
Posted By: DYohn
Date Posted: April 19, 2004 at 1:08 PM
For ported, I believe the Type R likes about 2.0 to 2.1 CuFt. Hey Alpine Guy, where are you? :) ------------- Support the12volt.com
Posted By: Alpine Guy
Date Posted: April 19, 2004 at 5:00 PM
im here, haha Iv had box's made for me with 2 cube's of air space and tuned to about 45hz, it was stupid loud, and still a little musical. I personally have had pretty much the same spl output from this sub in either a 1.25 cube box, or a ported box, they only diff is like 2 db which you wont be able to notice. If you feed 300 wrms to it, sealed is the way to go, it moves alot without much power. ------------- 2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
Posted By: defective
Date Posted: April 20, 2004 at 7:52 AM
i second that notion
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Posted By: alex75
Date Posted: April 20, 2004 at 9:07 AM
You guys all Rule!!! As always, thanks!!!
Posted By: alex75
Date Posted: April 20, 2004 at 9:59 AM
Hey Alpine guy!! I have a few more ?s for ya. What do you reccomend for rms to a Type R 12? I've heard they want more than 300w. For now, I'm using a (cheap) 600w, 2 ch Lanzar amp, will this be enough? I'll be getting an Alpine amp soon, which do you reccomend? I like the MRV420, 340wx1 @ 4 ohm bridged (I bought the 2 ohm sub). Does Alpine make a 1ohm bridged stable amp? If not, can you reccomend another good amp for the job? Thank you in advance, I really appreciate your input 
Posted By: Alpine Guy
Date Posted: April 20, 2004 at 10:47 PM
I always reccomend between 300-500 rms for that sub in the sealed enclosure. As for an amp, the mrv-t420 would push it, but probably suck more juice than you want to supply. The lowest impedance an alpine amp can run is 2 ohm, and thats only the mono sub amps. Look into a JL amp the 500/1 would be my reccomendation, it puts out 500 rms between 1.5-4 ohm. Its the best amp in my opinion for flexability. in the future you can get a 2 ohm sub and it will still put out 500 rms. There are also some 1 ohm stable amps out there, but im not familiar with any of them, i'll let others chim in here: ------------- 2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
Posted By: Alpine Guy
Date Posted: April 20, 2004 at 10:52 PM
https://cgi.ebay.com/dll?ViewItem&category=18797&item=3092684800&rd=1------------- 2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
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