Alpine X 12" Enclosure Recommendations


kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
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Huntsville, TX
I recently got the new Alpine X 12", and built a box to the recommended specs from the Alpine manual, but I just feel it's not hitting as hard as it should. My 12" W3 hit just as hard with 500 watts, and I'm pushing 900 watts to the Alpine so I figured there should be a noticeable difference. Anyone have the Alpine X that hits like it should? What box are you using?
 

JRsmoothee

Think For Yourself, Question Authority - MJK
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switching subs and increasing wattage by 400 watts isnt gonna be much louder to the ear....you need double the power or twice the cone area to really hear a difference....and the type x isnt known to be an SPL monster, are you ported or sealed?
 

Clifff150

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Jan 10, 2012
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Usually manufactures fib on the box recommendations. You running sealed or ported? How big is your box before displacement? If ported, what is it tuned to? Got any pics?
 

shredder2

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In something custom designed the Swx can get down. Some prefabs are better than others but are still prefabs.
 
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kchyde

kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
4
Huntsville, TX
I built a box based on the ported specs. Tuned to 33 hz. I didn’t take any pics of the inside of the box. It’s a long small square port.
 

shredder2

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I built a box based on the ported specs. Tuned to 33 hz. I didn’t take any pics of the inside of the box. It’s a long small square port.
Maybe a few pics of the box would help
and exactly what amp are you using?
Would the 12W6 in the ported HO box provide more SPL?
You'll not see any HUGE difference I believe. Give that Swx a chance
 

Coolhand20th

CarAudio.com VIP
Mar 27, 2019
393
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As others have said...Manufacturers are not exactly correct when they put those specs out. Mine on my most recent subs were off quite a bit. Trust someone who knows how to design a box.
 
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Radiospank

Senior VIP Member
Mar 27, 2012
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los angeles
hey just looked up both woofers and 400 watts is not much of a difference as someone said, but
the w3 sensitivity is 87.15 while the type X is 84.3. This is significant enough to make the type X power hungry to get the cone moving. Personally I would've stuck with the w3 and or get two of them. The type X are rated for 900 watt rms, that's W7 territory, better have some amp power to push those things.
 
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kchyde

kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
4
Huntsville, TX
Maybe a few pics of the box would help
and exactly what amp are you using?

You'll not see any HUGE difference I believe. Give that Swx a chance
I'm pushing it with a Kicker KX800.1. The spec sheet that came with it says it's pushing 907 watts RMS so it "should" match perfectly with the X. Any good custom box designers you know of in the Houston or Dallas area?.. or someone online to design it and I build it?
 
Last edited:
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kchyde

kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
4
Huntsville, TX
hey just looked up both woofers and 400 watts is not much of a difference as someone said, but
the w3 sensitivity is 87.15 while the type X is 84.3. This is significant enough to make the type X power hungry to get the cone moving. Personally I would've stuck with the w3 and or get two of them. The type X are rated for 900 watt rms, that's W7 territory, better have some amp power to push those things.
Well... you live and you learn smh... I had the w3 about 4 years ago and sold it when someone totaled my car, and I got a different car... and when I decided to get another sub I'd never had Alpine and heard good things about them so decided to give it a shot... now I know to just stick to JL since they seem to provide what like.
 
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kchyde

kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
4
Huntsville, TX
JL while nice is also overpriced imho. There is a ton of subwoofer brands that are equal or better for the pricing.
Yeah, def on the pricey side... that's why I get them from Craigslist or OfferUp for half price ;), and they're already broken in so I can blast them from the get go.
 

Coolhand20th

CarAudio.com VIP
Mar 27, 2019
393
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Wisconsin
Problem is though most people beat the crap out of them, personally I wouldn't trust people on those sites but that is just me. Not unless I did a complete recone on it.
 

Clifff150

Senior VIP Member
Jan 10, 2012
944
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Don’t give up on that Type X unless you’re going to sell it to me. Those are really great woofers. Instead of changing to a W6 let’s figure out what’s missing. What is it wired to? Send a photo of the box so we can see it. Also what kind of vehicle is it in and where is the sub firing?
 
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kchyde

kchyde

CarAudio.com Enthusiast
Aug 4, 2019
28
4
Huntsville, TX
Don’t give up on that Type X unless you’re going to sell it to me. Those are really great woofers. Instead of changing to a W6 let’s figure out what’s missing. What is it wired to? Send a photo of the box so we can see it. Also what kind of vehicle is it in and where is the sub firing?
You can make me an offer... 👀
 

Clifff150

Senior VIP Member
Jan 10, 2012
944
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Texas
I think the port is too small. Again, I know you followed Alpines specs but I just don’t think that’s good enough for the sub. I think the box build looks good by the way
 

THATpurpleKUSH

Smoke weed everyday
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Sep 30, 2009
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Like i said in your other thread:

Port is way too small

Box volume is too small

After seeing a pic I will add this:

Port needs to rear fire, you should only side fire the port in a trunk car if you know what youre doing and have a loading wall.
 

SlugButter

CarAudio.com VIP
Nov 5, 2019
315
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arizona
I would do 3 cubes at 28 hz with the type X. The w6 is more efficient ported than the type x, in terms of box size. That x wants to be in a big box tuned super low, with lots of port area. 40 sq inches or so. my opinion.
 

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