Ok, I'm trying to power 3 15" JBL subs. Each are 4omh DVC, and each have a max RMS of 300. So add the three together, i need a max of 900W RMS from an amp.
Here is the amp i'm looking at buying for $300 from Best Buy:
KENWOOD KAC-9103D
Product Description:
Monoblock Class-D Subwoofer Amplifier
RMS Power Output:
500 Watts x 1 Channel @ 4 Ohms
900 Watts x 1 Channel @ 2 Ohms
CEA-2006 compliant
Top-Mounted controls
Preamp Outputs - 1 Pair
Power MOSFET Switching Power Supply
Variable Low-Pass Filter: 50 - 200 Hz
Infrasonic Filter: Off / 15 / 25 Hz
High- and Low- Level Input
Adjustable Input Sensitivity: 0.2 - 5V
Bass Boost Control: 0 - 18 dB
Class D Amplifier Circuit
RCA Inputs/Outputs
Fuse Rating: 30A x 2
Signal-to-Noise Ratio: 94 db
Dimensions: 11-1/4" L x 14-15/16" W x 2-9/16" H
1-year Sonic Electronix warranty
Amplifier Specifications:
Number of Channels 1 - Mono
RMS Power (4 ohms) 500 watts x 1 channel
RMS Power (2 ohms) 900 watts x 1 channel
RMS Power (1 ohm) Not Stable
Bridged RMS Power Not Bridgeable
Peak Power Output 1800 watts
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged Not Bridgeable ohms
THD at Rated RMS Power 0.5 %
Speaker Level Inputs Yes
Preamp Outputs Yes - 1 pair
Built-in Crossover Yes - LP
High-Pass Crossover Frequency N/A
Low-Pass Crossover Frequency 50 - 200 Hz
Subsonic Filter 15 - 25 Hz
Signal-to-Noise Ratio 94 dB
Channel Separation N/A
Bass Boost 0 - 18 dB
Bass/Gain Remote No
Fan Cooled Yes
Fuse Rating 30 A x 2
Now if i'm wiring my subs like in this diagram:
http://www.crutchfield.com/learningcenter/car/subwoofers_wiring.html?imageID=3DVC%5F4%2Dohm%5Fmono
Then the ohm load on the amp will be 2.7
The amp's description claims 900W RMS @ a 2ohm load.
I know this means i will have a max RMS lower than 900W, but will it even matter, or be noticable at all? Will I have to worry about overheating?
And over all, is if this amp going to be a good or bad choice for me, because $300 is a perfect price.
Thanks
-Cade
