hi guys I recently upgraded my HU to a Sony CDX-GT200, I know is sony but it was free and there is a huge different vs stock, so now I want to upgrade my speakers.
here is what I want for the front and for the back but i am not sure how well they are going to sound without the amp. thanks for ur reply

front
Boston Acoustics SX65 6-3/4" 2-way
Details:
6-3/4" 2-way speakers (pair)
copolymer woofer cone with butyl rubber surround
Type-S2 Kortec dome tweeter
compact neodymium magnets for shallower mounting depth
power range: 2-50 watts RMS (160 watts peak power)
frequency response: 55-20,000 Hz
sensitivity: 90 dB
rear
Infinity Kappa 692.7i 6"x9" 2-way
details:
2-way 6"x9" speakers (pair)
2-ohm impedance
Plus One woven-glass-fiber woofer cone with hi-roll rubber surround
rotating UniPivot M.M.D. dome tweeter
computer-optimized outboard crossover with tweeter level control
power range: 2-110 watts RMS (330 watts peak power)
frequency response: 35-25,000 Hz
sensitivity: 95 dB

 

looks like alot o cut o paste
if you are planning to run an amp with built in crossover settings or an external electronic crossover (other than the one that comes in the component kit) then YES

if you are buying one from feebay like jensen/soundstorm/whatever the deal of the week is, and it lacks the built in or onboard adjustments for frequency then NO!

 

I was planning to just replace the speakers but maybe I will drop a nice amp.

can anyone give me any advice on a good amp and that isnt too expensive? thanks

 

Price range?

 

no more than $300

 

Rockford Fosgate P3004 $299.00 most any retailer, good amp looks nice works great 1yr warrenty. or the P325.2 basicaly same thing just 06 version

 

The Kappas are 2 ohm, it's pretty mandatory to amp those with a 2 ohm stable amp.

 

i would suggest upgrading the headunit to something with 3 preouts. unless your not gonna get a sub, unless you want to install a two line out. i'm not sure what direction your heading with your stereo system.

i would suggest going with a nice 2channel for the front and running the back as rear fill and have them run off the stereo power.