I need some help for sub amplifier and radio!!

I want an amplier for drived my 2 MTX T8104 (1000 watts each/400 watts RMS/ 4ohms) subwoofer... But I don't say what amp is the best for it??


On this site : www.woofersetc.com
There have some amp very interesting!


-- Boston Acoustics GT-28 - Boston Acoustics 2 Ch. 1000 Watt Amplifier

-- Hifonics ZXi1308 - Hifonics 1300W 2 Channel Amplifier

-- Soundstream TRA1000.2 - Soundstream 2 Ch 1000 Watts Amplifier

-- Avionixx AXT800.2RB - Avionixx 2 Ch 800 Watt Amplifier Factory Refurbished



Anyway!!! If you can help me to do a good choice, I will be very happy!!




And for the radio :

-- Pioneer Premier DEH-P700BT - Pioneer Premier CD receiver with Bluetooth Capability

-- Alpine CDA-9886 - Alpine CD receiver with MP3/WMA/AAC playback


Is it a good radios? If you can advisor me, I will be very happy too!!

Thanks for help!!


P.S : What is the best : sub in series or Parallel??  

Hey there, first of all I should tell you that the MAX or PEAK rating of the equipment, be it the subs, amps, speakers, or pretty much anything else is a useless rating.  At best the rating is slightly exaggerated and most times it's down right blasphemous.  The ratings that DO matter most are the RMS ratings.  It's best to find an amplifier whose RMS rating matches or is slightly higher than the speaker or subwoofers rating.  The reason you would want to go just a little higher is simply to give the amplifier headroom.  If all you need is 800 watts RMS for your two 10" MTX's then an amp that delivers 900-1000 watts RMS will give you the 800 you need without sounding stressed or running too hot.  Kinda like the engine in your car, it might be able to go 80MPH in 2nd gear at 7000 RPM but I bet you wouldn't do it or at least for very long.  It's kinda the same principle, no need to run the equipment at the ragged edge, plus with it cruising you'll get better dynamics and less distortion.  I would recommend a Hifonics BXi1208D, Audioque AQ1200D, ARC Audio KS100.1, Kicker ZX1000.1 are all a few good examples.  However, considering you have an older pair of subs (given the model number you gave is indeed correct they're 2001 models) I wouldn't recommend spending money on the more expensive amps unless you're planning on buying new subs soon as well.  If I was you I'd buy the Hifonics or something in that price range.  Whatever you decide to buy make sure it's at least 800 watts RMS @ 2 ohms.  As per the other half of your sub question you'll want to run your two subs in parallel since they're 4 ohms.  Car audio amplifiers aren't efficient at 8 ohms which is what your total impedance would be if you wire them in series.  Most good subwoofer amps are easily stable to 2 ohms.  As for the head unit both units you specified are great units I'd just recommend you buy the one with the features that will best suit your application and preferences.  

Ok!!

So! If I understood...

450 watts x 2 chan. @ 2 ohms  = (900 watts)
800 watts x 1 chan. @ 2 ohms  = (800 watts)

If I want connect 2 subwoofer I need an 2 channel amplifier?? If I connect my sub in series... Is it just one channel or this is 2 channel again?? I'm very confuse...

thanks for help!  

No, it's much simpler than that.  You don't have to have 2 channel amplifier just because you have two subwoofers.  Your subwoofers are 4 ohms each, which means when you connect them together it will change the impedence 1 amplifier channel will see.  Almost any and every amplifier out that that can deliver 400 watts RMS into a 4 ohm load is VERY expensive.  One because that is a very large amplifier and two because almost all multi-channel amplifiers are class AB which is also not highly efficient for your charging system.  You should be looking for a CLASS D single channel subwoofer amplifier that is rated at least 800 watts RMS into a 2 ohm load.  The two ohm load is key here because you have two 4 ohm subwoofers.  The only possible wiring combinations here are series or parallel.  A series wiring configuration is going to yield an 8 ohm load to the ampliifer which is counter productive.  However in a parallel wiring configuration you'll have a 2 ohm load on the amplifier which will make it perform quite well.  

I'll simply recommend this.  You should buy a CLASS D single channel amplifier that is rated to produce no less than 800 watts RMS (remember the RMS rating is the key rating) and no more than 1000 watts RMS into 2 ohms.  Plain and simple, you should find an amp that fits this criteria and your price range.  

Thank you very much!!

I understand for now... You're a nice guy!

Sincerely
Mathieu  

the alpine head unit is a good choice for a loud system because of the bass control and treble frequency and bass frequency center it has built in so it delivers incredible sound that is if you get the alpine-9887 thats what i have with the imprint solution and i have hit 155.5 db with my 4 15 memphis mojo the 2008 models and there on 2 memphis power reference 2500 watt amps with 10 power accoustic tweeters and 8 infinty kappa 5x7's and nobody can keep up with this system.