Question 1

Will this amp power 2 6x9s 2 5x7s  2 regular tweeter and 2 3.5 tweeters all Rockford ?

Accepted Answer

As far as  wattage goes, it shouldn't have any trouble. This is a 4channel amp so I assume you are going to connect a single woofer and a single tweeter to each of the 4 channels. I would definitely use an external crossover to keep the lows out of the tweeters. Your tweeters may already have one built in? Just be sure when connecting 2 speakers to a single channel, the combined ohms = 2ohms or 4ohms. That is the amps operating range.

So.. I don't know the ohms of your speakers, but for this example, let's just say they are both 4ohms. In this example, you will need to connect the speakers in parallel,  which will put a 2ohms (4/4=2) load on the amps channel. This is within the amps range and you'll get 75watts of power from that channel. If you connect them in series, that will create an 8ohm  (4+4=8) load and that is outside the amps recommended range. There won't be enough wattage to get good amplification.

Now in this next example that each of your speakers is rated at 2ohms. In this example, you will need to connect the speakers in series,  which will put a 4ohm (2+2=4) load on the amp's channel. This is within the amps range and you'll get 50watts of power from that channel. If you connect them in parallel, that will create a 1ohm (2/2=1) load and that is outside the amps recommended range. The amp could overheat and be permanently damaged.

So just remember to wire your speakers so that the combined impedence (ohms) per channel stays within 2-4 ohms. It is also best to keep each channel the same. So... one woofer and one tweeter per channel. Don't connect all 4 woofers to the back channels and all 4 tweeters to the 2 front channels. You'll likely under power your woofers and over power your tweeters.  I hope this helps. There's plenty of info online about wiring speakers in series vs parallel.

So one more thing. This happens all the time with component speakers (1 woofer, 1 tweeter, 1 crossover) and 2, 3, and 4way speakers, which are just having the tweeters mounted to the center (coaxially) of the woofer.

Impedence (ohms) too high = lowers the power output.
Impedence (ohms) too low = puts too much strain on amp.

I hope this helps. :-)

Question 2

Would this push 2 ds18 6.5 500 watts a piece and 2 ds18 6x9 500 watts a piece. or should i get a 400 fosgate

Accepted Answer

Any amplifier will push these speakers and sound great in a car. If you want to win car wars, you need more power to push these speakers to their limits.

Question 3

Is rockforgafe amp a good match for kicker 6x9

Accepted Answer

Yes it is

Question 4

Can this amp handle 2ohm load while bridged?

Accepted Answer

Im running that with a sundown audio 12. Beast mode.

Manufacturer	Rockford Fosgate
Part number	R2-300X4
Item Weight	2.2 Kilograms
Item model number	R2-300X4
Voltage	2.3E+2 Volts (AC)
Item Package Quantity	1
Plug Profile	Surface Mount
Specification met	CE
Included components	Amplifier users manual
Batteries Included?	No
Batteries Required?	No

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Rockford FosgateR2-300X4 300-Watt 4-Channel Amplifier

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