thanks everyone for your inputs!! i will be going Focal K2 power 165 KR front components
focal , focal ISC 100 rear speaker , and Soundstream PN4.520D 4 channel amp... will buy getting these parts within the next couple of weeks!! hopefully everything runs smooth and sounds good!! thanks again!

1 more question... does the Soundstream PN4.520D 4 channel amp have enough power to put my focal k2 165kr components and rear isc 100 coxials to its full potentials without the amp stressing a lot and heating up a lot when playing my music in high volume for low trips?

Just curious. Why do you want to drive $1600++ worth of high end components with a $100 amplifier? This amplifier won't drive these speakers to their full potential. Maybe look at the specifications of this amplifier and compare it to a high end unit that would complement your excellent choices of speakers and head unit.

Tuning the amplifier is simple. No need to pay someone.

The 165k's are $600. the isc100's are $150. That's $750, not $1600++ unless you're using common core. lol. but seriously;
The 165kr are rated at 80w rms, the isc100 at 40w rms. The amp is rated at 100w rms, more than enough to drive these speakers to their potential and beyond.:tiphat: If the OP were interested in, say, competing in Iasca or Meca, I would recommend something else.
Costs more doesn't mean sounds better. Something I learned a looong time ago.

Don't know what you mean by "common core" but I was using full retail for both sets of speakers and head unit. So your saying an amplifier with a higher Signal to Noise Ratio and Lower Total Harmonic Distortion won't sound better than the Soundstream with the Focals? If that was the case, in your opinion, why not spend a lot less on the speakers too since they will sound the same as expensive ones, or is that just amplifiers? I just wouldn't spend all that money on audio then go cheap on the amplifier.

I don't recall saying that anywhere in this thread. Please point that out to me. If the OP chooses, he can buy a couple Milbert tube amps for about $8k. Offer the OP a suggestion for a suitable amp, or move along.

Just a side note to this comment unrelated to this thread.... Did you know that Alpine had a component set on the market called F#1 Status, and the Mids alone in that set were retailed at $3800 I believe. I heard a set in a Q35 at SLAP Nationals in 2005. They were amazing.
Turns out, the Mids were rebadged drivers from the Scanspeak Illuminator line, which retails at about $460 a pair. This just popped into my mind when I read that comment, that's all.

I am not trying to cheap out on the amp... I never gave a budget price on how much to spend on it, but of course nothing too outrageous like a 2k+ amp lol..
like I said in the earlier post.. i am below average when it comes to audio even after reading the sticky on audio 101 from Big haha
that is why i created this thread and ask for suggestions.. just need a good amp that can power these speakers up and bring out what these speakers can do.

Sorry Nismo13807 didn't mean to imply you were being cheap. Just didn't make sense that you are using high end speakers with an entry level amplifier. That being said here are three amps ,of many, I have used or are currently using and I am very pleased with them all. They are all four channel and can be purchased from $325 to $450 at this time.

JL XD400/4VS
Currently using to power components in the front and one ten inch sub.

Memphis 15-MCX4.75

Arc Audio FD4150

I like to experiment with various brands. These will provide exceptional sound at high levels with no distortion.

Also you mentioned you do not want a sub. The speakers behind the seats add almost no sonic impact or overall quality to the sound of the system. My feeling is a sub would contribute much more to the sound of your system. Zenclosures makes an awsome enclosure custom built to fit our cars. They will even adjust the cabinet airspace to your sub's requirement. I have this with a 10 inch sub and it sounds incredible. You could also purchase a sub enclosure and attach it to rear deck but I really like the finished look of the Zenclosure. Any of the amps listed above are bridgeable meaning you can combine one rear left and one rear right channel as one to drive one woofer at 200 to 250 RMS. When and if you decide to add a sub. Hope this helps.

trust me.. i need to pay someone to tune it... knowing me.. i would end up blowing a speaker or 2 lmaoo.. not even gonna lie

thanks for confirming the amp can power these speakers plus more.. i got confused because for the k2 165kr it said Max. power: 160W and
Nom. power: 80W... so i didnt know what Watt to go by along with Nom. impedance 4 ohms and DC resistance 3 ohms.. it just gives me a big of headache... also on a threads listed below,someone said the kp2 165kr speakers can handle a lot more power then the spec sheet listed ( 200w rms )..

http://www.the370z.com/audio-video/8...-handling.html

http://www.the370z.com/misc-items-sa...-like-new.html

oh.. dont trip.. i know u didnt imply me as being cheap and i totally understand what u were saying lol..

the rear speaker is just for when i want to play dvd or for bluetooth calling.. even tho if it doesnt do much or anything.. it's a cheap investment.. incase one day i do decide to get rears, i dont have to do another install and get another amp for it..

yea.. the zenclosure boxes look awesome! i have seen alot of those on a 370z build and that will b the route i take IF i do decide to ever get a sub!
thanks for the amp recommendations .. so are u saying that the Soundstream PN4.520D will start having distortion when in high volume?

Like Mr Pinchy said.. its a pretty simple process. when your ready post it up here, and someone will help you.
The amps Mr Pinchy posted are all good solid units. although the Arc is as big as a VW...lol
x1 on the zenclosure box. many guys here are using them, and I have yet to see a complaint.
Lastly, high volume distortion is going to be a product of Many things, and can happen with ANY piece of gear....but the setup of your amp is paramount.
Try not to get TOO hung up on numbers/specifications; a lot of the things you hear are myths/dogma/miconceptions from years ago that just are not relevant today. Here are a few links for you to look at with regard to Signal to noise, and Total harmonic distortion......
Signal To Noise Ratio
Total Harmonic Distortion This whole page is a great resource for beginners, and even advanced stereo nuts, and is full of information.

I think that if you are capable of installing the system you can tune it. Very simple and someone can help you out. All you have to do is set the frequency to match the speakers for each channel and the adjustable gains for volume with the HU and your set. Just a couple minutes. Lots of information about this on the internet. Crutchfield has a good step by step. Once tuned you will be able to turn the volume up so high you won't be able to stand it ,HOWEVER, the signal will be crystal clear.:tup: