my budget system

I really don't see how that amp will work for 3 single 4's.Honestly a good mono 1ohm stable amp would work since in parallel you'll be getting a 1.34ohm load.Can you send the amp back?If you can try and trade up to a mono amp like this:
http://www.sonicelectronix.com/item_17515_Power+Acoustik+STAX+2000-1D+-STAX2000-1D-.html
I have a power acoustik amp and am very happy with it.

 

the audio shop obviously doesn't know that the amp isn't stable to that impedance. running your amp at 1.3 ohms can and will most likely harm it.

if it was me, i would use that amp to run mids and highs. find a 1 ohm stable sub amp.

 

still in the long run u will kill the amp..and the speakers probably dont sound anything like they should as your not pushing nearly enuff to reach that 250 RMS for any of them..which can also harm the subs.

i had http://vminnovations.com/product_1613/Pyramid_PB715X_1000W_2_Channel_Amplifier.html

which the RMS on this thing is TERRIBLE come to find out but i had my kickers running at 1-ohms on tyhis thing (which it shouldnt be able to do) anyways these days that amp now has issues..it overheats very easily it will cut out n go into protection mode all the time and i blew a few fuses on it..and it had to be do to the fact of how abused it has been and running what it shouldnt be running..if you want a cheap amp and a lot of power i suggest this...
http://vminnovations.com/product_5141/PLANET_AUDIO_AC1500_1_1500W_Monoblock_Amplifier.html

i have 4 12's and i want 2 of these.

 

a clipped signal can harm the subs, not low power.

i used to run 2 12's on my hifonics vulcan 20 years back. only 50 watts per channel. the subs were mtx blue thunders. 250 rms power rating each. as long as the signal is clean you can run as little power as you wish. it wont get record breaking loud, but can still sound good at reasonable listening levels.

i still have the amp too. its a tried and true performer.

 

id go with the amp i showed...pushes a lot more power and actually is a decent brand

..btw what exactly is clipping? and how can u tell its happening

oops sorry never posted it but i think this is a great bang for the buck...after the research ive done on the company and the amp itself...seems to be very good
http://vminnovations.com/product_5141/PLANET_AUDIO_AC1500_1_1500W_Monoblock_Amplifier.html

 

I first must say,

I don't know anything about Planet Audio, so this is just my gut talking, but that price (to me at least) screams Caveat Emptor. $90 for a 700w RMS Amp? Perhaps its Overrated, they don't last, or use cheap parts (resulting in distortion), or maybe all the above.

Maybe someone who owns this brand will tell me why I'm wrong, but if its too good to be true, it probably is.

 

Ive found a lot of people saying that planet audio is a solid brand.. (used to be better but still very solid) also have found many people saying that the amps however push every bit what they say they can.

i have honestly done much research on this..and if your going budget even if it dont run the rms at the price is will still pack a punch and better than the sony..and anything near its price range.

and was this aimed at me?

 

There's no way your car is getting 14.4V to the amp constantly, so the RMS rating specs are higher than what you'll experience in-car.

How big are the fuses in this amp?

40 amps of current would only produce around 400W RMS, so I'm not sure what "rated output" the specs are referring to.

 

i suggest you be the one doing research ive already done mine old school or not that sony may vary well push them i dont know but not as well.

Ive done my research..and the pyramid was only temporary and got the thing for free.