What Amp?
What Amp? hey guys i just got 2 alpine swr-1241d 12" subs and i am planning on buying a subthump box for them, but anyways i was wondering what kind of amp or amps i should use to power these they are dual 4 ohm, peak power handling is 1000 and rms is 300, and i was also wondering if i would need a capacitor?thanks for the help!
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Joined: Aug 2005
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I doubt you would need a capacitor, dont pay any attention to peak power, it dont mean **** when you really want clean distortion free power. This amp is the perfect choice for you, it matches the 2ohm power (300 watts each) load that the subs would be running at! http://edesignaudio.com/product.php?...pid=33&cur=USD
thanks a lot i dont know much about all of the ohm, rms, and stuff like that but my subs are 4 ohms each, i dont understand how this really works can someone please give me an idea, this amp says 200x2 @ 4 ohms wouldnt i need 300 instead of 200, or b/c it says 600x1 @ 4 ohms it would power both my subs at 300?
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You said the speakers are dual 4 ohm right? Meaning it has two voice coils that are 4ohm each, depending on how you wire it, you'll get a final impedance of 2 or 8 ohms. Meaning that amp will power the speakers at 300 watts each when wired for a 2ohm load.
Look at the top two pics in this wiring diagram here http://www.edesignaudio.com/wiring.php For a 2ohm load you'll want to wire it just like the one on the left. Those amps being pictured are 1ch amps so for that 2ch amp I showed you, all you gotta do is just wire it up just like that pic for each channel.
Read this if you want to know more about power ratings, it'll explain that stuff better than I can http://www.crutchfieldadvisor.com/le..._glossary.html
Look at the top two pics in this wiring diagram here http://www.edesignaudio.com/wiring.php For a 2ohm load you'll want to wire it just like the one on the left. Those amps being pictured are 1ch amps so for that 2ch amp I showed you, all you gotta do is just wire it up just like that pic for each channel.
Read this if you want to know more about power ratings, it'll explain that stuff better than I can http://www.crutchfieldadvisor.com/le..._glossary.html
Get a class D amp and wire them up for 1 ohm loading. Class D is more efficient and won't be so hard on your factory charging system.
This is NOT my auction, but if you go used you can get a 1,000 watt rms @ 1ohm memphis for a couple hundred bucks:
http://cgi.ebay.com/ebaymotors/MEMPH...spagenameZWDVW
This is NOT my auction, but if you go used you can get a 1,000 watt rms @ 1ohm memphis for a couple hundred bucks:
http://cgi.ebay.com/ebaymotors/MEMPH...spagenameZWDVW
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thanks man, the guy at best buy said i should run 2 of these amps(rockford punch p550.2)
http://www.bestbuy.com/site/olspage....=1141762608658
1 for each sub and it would work good, but im not a big fan about the price of 2 of these haha, my friend works here and he said he can get them for about 220 a piece for me so how would this do and also would i need anything else to run these or my battery is strong enough by its
http://www.bestbuy.com/site/olspage....=1141762608658
1 for each sub and it would work good, but im not a big fan about the price of 2 of these haha, my friend works here and he said he can get them for about 220 a piece for me so how would this do and also would i need anything else to run these or my battery is strong enough by its
Last edited by monster044; Jul 16, 2006 at 03:40 PM.
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Verdad Gallardo TECH Apprentice
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I'd still say go for the ED amp especially for the price, ED is not quite a well known company yet, they'v been around for like 5 years now. But out of everything I'v read about them, I have NOT found anything negative about their products!
The guy at bestbuy is just trying to sell you something you dont need, your subs dont really need all that power that RF has.
The guy at bestbuy is just trying to sell you something you dont need, your subs dont really need all that power that RF has.
Actually if you can get one of those RF amps for $220, that's pretty good. It would probably be olk. But I stress class D because they are SO much more efficient than class A or class AB amps, sometimes as much as 3-4 times as efficient. That is for the same power output they use less than 25% of the energy of class A amps. This is obviously a good thing in terms of charging system load.
http://www.extron.com/technology/arc...sp?id=ts122001
The ED amp is back ordered.
Pick a class D brand you like that will give you about 500 watts rms total or more and pull the trigger.
http://www.extron.com/technology/arc...sp?id=ts122001
The ED amp is back ordered.
Pick a class D brand you like that will give you about 500 watts rms total or more and pull the trigger.
Last edited by todddchi; Jul 16, 2006 at 08:32 PM.
Originally Posted by monster044
thanks man, the guy at best buy said i should run 2 of these amps(rockford punch p550.2)
http://www.bestbuy.com/site/olspage....=1141762608658
1 for each sub and it would work good, but im not a big fan about the price of 2 of these haha, my friend works here and he said he can get them for about 220 a piece for me so how would this do and also would i need anything else to run these or my battery is strong enough by its
http://www.bestbuy.com/site/olspage....=1141762608658
1 for each sub and it would work good, but im not a big fan about the price of 2 of these haha, my friend works here and he said he can get them for about 220 a piece for me so how would this do and also would i need anything else to run these or my battery is strong enough by its
don't listen to the guy at best buy.....
first of all, if your subs are DVC 4-ohm subs....when wired in parallel, that would place a 1-ohm load to each channel of the amp, which is out of spec for that amp and could possibly fry it. and if you wire it up in series, it will only be a 4-ohm load to each channel of the amp, and you would not be getting the most the amp has to offer. that would be a good (although expensive) option if your subs were SINGLE 4-ohm subs, but they're not.
also, the more amps you have, the more power it will take to run them, which will stress your charging system more.
your best option is to get a class D 2-channel amp that is stable to at least 4 ohms bridged, and which will output between 500 - 700 watts continuous when in bridged mode. the one that Josh_101 posted first is a nice amp for a good price, but it won't be as efficient as a class D amp would be, i.e., it will convert more power to heat than a similarly-rated class D amp would.
Here's a wiriing guide for DVC subs, for easy reference.
The RF amp he linked does 275x2 @ 2 ohms, while the bridged output is rated at 550. So at least per the specs he should be fine if that is the amp he chooses to use, so long as he runs in 2 channel mode.
Actually if you have that good of a hookup at BB (being at about 50% of thier normal pricing) I'd get two of these:
http://www.bestbuy.com/site/olspage....=1134701297803
If you can get those for ~$100 a pop that'd be just dandy. You would run your DVC subs in parrallel to put a 2 ohm load on each amp and end up w/ 400 watts rms to each one. That'd hit real nice, be class D, and be at the same price as the Rockford.
Actually if you have that good of a hookup at BB (being at about 50% of thier normal pricing) I'd get two of these:
http://www.bestbuy.com/site/olspage....=1134701297803
If you can get those for ~$100 a pop that'd be just dandy. You would run your DVC subs in parrallel to put a 2 ohm load on each amp and end up w/ 400 watts rms to each one. That'd hit real nice, be class D, and be at the same price as the Rockford.
Last edited by todddchi; Jul 17, 2006 at 07:58 AM.