alpine type s 12 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

oldblue72c10 · 12-24-2010, 04:59 PM

Is this a good sub still and its in a custom ported box, i believe it is 900 watts so what would be a good amp?

Gobbles · 12-27-2010, 02:13 PM

It is 900W Peak, but the RMS value is what you need to be concerned about, which is 300W. at 4 ohms. So find an amp that runs 300W over 4 ohm impedance. There are quite a few different ones you can look at, I don't know who has the best american prices. I use Visions Electronics (Canadian pricing), which has a nice Alpine amp on sale, shown here:

http://www.visions.ca/Catalogue/Cate...productId=3202

tubbedII · 12-27-2010, 03:44 PM

Gobbles is right...putting 900 watts to it will make it not last very long. There's better 12's out there, but there's always better so it's all a matter of what sounds good enough for you (and price of course). Have you heard it at all? My biggest concern would be the box. An incorrect port design can really diminish the quality of the sound.

allengator · 12-27-2010, 04:00 PM

I would use a good name brand amp rated at 300W RMS or less...

Also the MOST important ingredient is the enclosure... this speaker should be mounted in an inclosure measuring an INTERNAL volume of 0.85-1.5 cubic feet for a sealed box.
SEALED boxes are much easier to build as you dont have to be concerned with port location, length, diameter for tuning! AND in this speakers example, making a tuned box doesnt let you build it smaller anyway!

When building the box dont for get to subtract 0.084 cu. ft for the displacement of the mounted speaker.

oldblue72c10 · 12-27-2010, 05:23 PM

The box is a ported box

12-24-2010, 04:59 PM	#1
oldblue72c10 LIGHT' EM UP!!!!!!!!!! Join Date: Nov 2009 Location: Collinsville Oklahoma Posts: 243	alpine type s 12 Is this a good sub still and its in a custom ported box, i believe it is 900 watts so what would be a good amp? __________________ BONDO IS YOUR FRIEND WOULD YOU EVER USE YOUR FRIEND 1972 custom 10 longbed current 360 building a racing 355

12-27-2010, 02:13 PM	#2
Gobbles Registered User Join Date: Sep 2010 Location: British Columbia Posts: 484	Re: alpine type s 12 It is 900W Peak, but the RMS value is what you need to be concerned about, which is 300W. at 4 ohms. So find an amp that runs 300W over 4 ohm impedance. There are quite a few different ones you can look at, I don't know who has the best american prices. I use Visions Electronics (Canadian pricing), which has a nice Alpine amp on sale, shown here: http://www.visions.ca/Catalogue/Cate...productId=3202 __________________ Trevor "You already said spite" Last edited by Gobbles; 12-27-2010 at 02:14 PM.

12-27-2010, 03:44 PM	#3
tubbedII needs more $$$ Join Date: Mar 2004 Location: Sacramento Posts: 1,936	Re: alpine type s 12 Gobbles is right...putting 900 watts to it will make it not last very long. There's better 12's out there, but there's always better so it's all a matter of what sounds good enough for you (and price of course). Have you heard it at all? My biggest concern would be the box. An incorrect port design can really diminish the quality of the sound. __________________ 1970 2wd Blazer

12-27-2010, 04:00 PM	#4
allengator Registered User Join Date: Dec 2010 Location: Burleson, Texas Posts: 596	Re: alpine type s 12 I would use a good name brand amp rated at 300W RMS or less... Also the MOST important ingredient is the enclosure... this speaker should be mounted in an inclosure measuring an INTERNAL volume of 0.85-1.5 cubic feet for a sealed box. SEALED boxes are much easier to build as you dont have to be concerned with port location, length, diameter for tuning! AND in this speakers example, making a tuned box doesnt let you build it smaller anyway! When building the box dont for get to subtract 0.084 cu. ft for the displacement of the mounted speaker. __________________ Allengator Outta the Blue (my band - available for hire in the DFW area!) 1980 Chevy SWB Pickup (build thread) 1951 Chevy Sedan Delivery 2004 Chevy Tahoe Z71 2011 Harley Davidson Street Glide 2018 Silverado Z71 Crew Cab

12-27-2010, 05:23 PM	#5
oldblue72c10 LIGHT' EM UP!!!!!!!!!! Join Date: Nov 2009 Location: Collinsville Oklahoma Posts: 243	Re: alpine type s 12 The box is a ported box __________________ BONDO IS YOUR FRIEND WOULD YOU EVER USE YOUR FRIEND 1972 custom 10 longbed current 360 building a racing 355



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