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I just got an Infinity Sub (KAPPA PERFECT10VQ)
Power Handling, Peak: 1600 Watts
Power Handling, RMS: 400 Watts
Sensitivity: 87dB
Frequency Response (±3dB): 25Hz - 400Hz
Mounting Depth: 6-1/2"
Impedance: 4 Ohms

And i was planning on getting an Alpine AMP (MRP-M650 Class-D Mono Power Amplifier)
# CEA-2006 Power Rating (40hm@14.4V = 1%THD+N), S/N 65dBA (Ref. 1W into 4Ohm): 400W x 1
# RMS Power (at 14.4V THD+N, 20Hz-20kHz):

* Per channel into 4 ohms: 400W x 1 (0.08% THD)
* Per channel into 2 ohms: 600W x 1
* Bridged 4 ohms: 1000W x 1 (0.3% THD)

# Bass Engine Sound Tuning:

* Crossover Frequency : 50Hz - 400Hz LP (-12dB/oct)
* Subsonic Filter (Fixed): 15Hz
* Bass EQ Frequency (Fixed): 50Hz +12dB

# Frequency Response: 20Hz - 200Hz (+3,-3dB)
# Signal to Noise (S/N): 90dBA (Reference to Rated Power)
# Input Sensitivity (For Rated Power): 0.2V to 4.0V (1.0 at Center Detent)
# Input Impedance: 10k Ohm
# Speaker Impedance: 4 or 2 ohm Bridged

I was wondering for any other suggestions

 
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Infinity Reference 611a

Performance
RMS Power Output (Watts x Channels) 456 x 1
Frequency Response N/A
THD at Rated RMS Power 1%
Signal to Noise Ratio 70 dB
Input Voltage 14.4v
Peak Power Output (Watts x Channels) ---
Power at 2 Ohms (Watts x Channels) 657 x 1
Bridged Power (Watts x Channels) N/A
Minimum Impedance Bridged N/A
Minimum Impedance Unbridged 2
Features
Amplifier Class D
Tri-Way Capable No
Low-Pass Crossover Frequency 32-320 Hz
Low-Pass Slope (dB/octave) 12dB
High-Pass Crossover Frequency N/A
High-Pass Slope (dB/octave) N/A
Bass Boost DBO level up to 12dB
Bass Boost Frequency DBO freq 20-80 Hz
Fan Cooled No
Fuse Rating 30 x 2
Speaker Level Inputs No
Preamp Outputs 1 pair
LED Power Indicator Yes
Height (inches) 2-11/16
Width (inches) 15-7/8
Length (inches) 12-1/8
Parts Warranty 1 Year
Labor Warranty 1 Year

 
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http://cgi.ebay.com/HIFONICS-ZEUS-ZX...QQcmdZViewItem

HIFONICS ZEUS ZX4000 2-CH AMPLIFIER


Specifications :

New HIFONICS twentieth Anniversary Heat Sink Design
2 x 100 Watts @ 4 Ohms
2 x 200 Watts @ 2 Ohms
1 x 400 Watts @ 4 Ohms
Bass remote with blue LED power on & indicator included
Ultra Fi Mosfets
Zeus EXVP
Hifonics Surface mount design
Fully adjustable accu-cross X-overs
PWM mosfet power supply
Line output for amp daisy chaining
Variable Bass EQ
Sub-sonic filter
4 gauge power connectors
Class AB operation
Maxi fuse

 
Rep Power: 274

I am biased totally

Nak
on Ebay

 
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I highly recommend MTX amps. Their manufacturing process for car amps is much better than most. (although you can't go wrong with a Nakamichi, for the extra dough).

 
Rep Power: 310

Although I appreciate the specs you gave in your post immensely, you left out a crucial bit of info - How much are you willing to spend, and what do you wanna get out of it? Are you willing to spend arc or zapco money? JL Audio 500/1?? You wanna stay more reasonable in price, like

http://www.onlinecarstereo.com/CarAu...roductID=12982
??

 
Rep Power: 262

JL, kicker, phoenix gold, RE audio, Earthquake. Nothing else

 
Rep Power: 310

Nothing? Not even Tru, Arc, Zapco or Mac?

 
Rep Power: 274

Zapco is like a forum favorite on elitecaraudio and canadiancaraudio.

 
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I really wanna spend around 300

 
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the best amp company is US AMPS i got my directly from a dealer so i paid less i thi nk they run about 600 but are welll worth it.

 
Rep Power: 361

Generally you will get what you pay for with amps. If you get a high proced amp to put with your Infinity sub (like JL, alpine, infinity, etc.) you will really love the clarity you have. And having such a nice sub helps too