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New amp for sub

  #1  
Old 04-13-2009, 09:59 PM
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Default New amp for sub

Ok so if you guys recall i have a kicker zx350.4 which is running my fronts, and bridged to run a sub. The sub i have now is a 12" infinity kappa in a ported box. I was thinking about getting another amp, as i know tOOfatt recommended i do. My sub is a dual 2 ohm so can be set to 1 or 4ohm, so i dont want a mono, as most give their full potential at 2ohm, and significanlty less at 4ohm. I was thinking either the kicker zx250.2, which is good for a 4ohm load bridged and gives you 250rms, or the kicker zx350.2, which is the same, just 350rms. my sub is rated at 350 rms but could i get away with with the 250 since i have a ported box?? what do you guys recommend?? And i know ive asked this a million times but these 2 amps will be fine on stock electricals?? just wanna make sure. I will be using my zx350.4 to run all my inside speakers if i get this.
 
  #2  
Old 04-13-2009, 10:16 PM
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The JL Slash 250/1v2 amp is 1ohm stable, and one hell of an amp. It isn't cheap, but no 1 ohm stable amp is going to be cheap. I can't think of any others that are 1 ohm stable, and this small. Going with the kicker amp is not a bad option either. The main benefit of running the JL amp is efficiency. The JL amp is digital, which is much more efficient than A/B swtiching amps. Digital amps also stay much cooler and I belive are less susepctble to clipping and power loss when it does get hot. If you can afford the JL amp, go for it, if not the kicker isn't a bad choice either.

With either amp you will still be far away from overloading your electrical system.
 
  #3  
Old 04-13-2009, 10:29 PM
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ok thanks, the only problem is that the guy i get my stuff from cant get jl products or else id give it a try. As for the kicker amps (which i have come to love after switching my alpine for the zx350.4), will my sub pound with the zx250.2 or will the 350.2 make a big difference??
 

Last edited by christian2000accord; 04-13-2009 at 10:31 PM.
  #4  
Old 04-13-2009, 11:31 PM
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Well if your really want my opinion I wouldn't waste the money getting a small amp just for that sub. It really isn't a great sub. But if you want to go that route, I would go for the 250.2 just because it is cheaper. A small quality sub would be much better. One option would be to get a 500w amp and run the kappa off it until it blows, than replace it with a nice type-r, or a even a 10" CVX is nice. I just heard my first 10" CVX and was surprised by the SPL output, and as with any 10" it had very nice SQ.
 
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Old 04-14-2009, 08:17 PM
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ok so i got a 300rms 2 channel mtx amp for my sub, so now i will have that amp as well as my zx350.4. I am still within the limits of my stock electricals correct?? I have done no modifications at all to the electrical system such as big 3, etc. Am I still safe??
 
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Old 04-14-2009, 09:42 PM
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Very safe, the big three doesn't do anything but help stabilize the voltage when your drawing a lot of power. Even with your smaller battery your just fine, just don't blast music for too long with the car off. MTX makes some nice amps, good choice.
 
  #7  
Old 04-15-2009, 11:31 AM
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hey just asking a question for a friend. He has a rockford p400-4, which says it is 4,3, or 2 channel. But there is a switch on it that lets you select either 2 or 4 channels. how do run this amp with 3 channels??
 
  #8  
Old 04-15-2009, 12:55 PM
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you set it to 4 then bridge one side like you had your amp. I'm on my iPod sorry for the short response
 
  #9  
Old 04-25-2009, 04:21 PM
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the kicker 350.4 is mainly used to run all for door and deck speakers in the rear... a sub amp is mainly used on a mono block class d setup to get the best wound out of your system . i run a kicker cvr 15 2 ohm and a kicker 300.1 amp witht he remote bass controller it sounds VERY good but running a multi channel amp would def give u more Siganl to noise ratio being that thoses multi channel amps are mainly built to amplify Vocals and not bass id really go ahead and buy u a good hifonics amp mono block and call it good
 
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Old 04-25-2009, 04:39 PM
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Originally Posted by streetlimitz89 View Post
the kicker 350.4 is mainly used to run all for door and deck speakers in the rear... a sub amp is mainly used on a mono block class d setup to get the best wound out of your system . i run a kicker cvr 15 2 ohm and a kicker 300.1 amp witht he remote bass controller it sounds VERY good but running a multi channel amp would def give u more Siganl to noise ratio being that thoses multi channel amps are mainly built to amplify Vocals and not bass id really go ahead and buy u a good hifonics amp mono block and call it good
First off if you can't explain why, don't bother. Your wrong anyways... The difference between A/B and digital amps is that digital amps are more efficient, but can have trouble producing higher frequencies. Not the other way around... A/B amps have no problem producing bass. Using a small A/B amp to run a sub is not optimal but is just fine, running a large A/B amp is where it starts to get wasteful. Running an A/B will not bring up the noise floor over a digital amp, unless it begins to get excessively hot. Lastly your 15" CVR does NOT sound good, that sub wants at least 500w. How do I know? I used to run 15" CVRs and fed them 700ws each, and I still wasn't very satisfied with them. And hifonics amps are not even close to being a quality amp anymore. Sure back in the day they were nice, now they are only a few steps ahead of boss... Just because they look pretty, doesn't mean they are good. They just know young kids like you will think that makes it a good amp. So please I have hard enough of a time keeping up with everyone's questions, don't make me correct you as well...
 

Last edited by t00fatt; 04-25-2009 at 05:49 PM.

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