ok right now i have 2 12" POLK DB's (DYNAMIC BALANCE,discountinued model)...here are the specs on these subs...

12"(30.5cm) Subwoofer
db subwoofer drivers are optimized to deliver explosive bass performance when used in small sealed enclosures. They provide you with deep, tight and musical bass for the true high-end car stereo enthusiast.

Ultra stiff mineral filled polymer cones withstand the extreme mechanical stresses generated in sealed enclosures. These are the stiffest, strongest cones you can buy
Killer bass from enclosures as small as .9 cubic foot
Steel / Polymer laminate basket damps basket resonance for clean, uncolored response
Four-layer 2" diameter voice coil and vented pole piece for superior power handling
Available in 8 and 4 Ohm versions


Cutout Diameter
11"
27.94cm
VAS
2.54 ft3
82.31L
SD
.563 ft2
.0523m2
Winding Width
1"
25.4mm
Xmax - Linear
.343"
8.7mm
Xmax - Mechanical
1"
25.4mm
Height of Air Gap
.315"
8mm
Magnet Assembly Weight
9lb 2oz
4.1kg
Magnet Weight
4lb 2oz
1.9kg
Vd - Volume of Driver
.062 ft3Nominal Impedance
4 Ohm
Frequency Response
20 - 200Hz
Sensitivity
86dB
Power Rating
800 watts
Actual Impedance - RE
3.7
Max. Power (RMS)
400 Watts
Max. Power (Peak)
800 Watts
Resonant Frequency - FS (HZ)
23.6Hz
QMS
4.523
QES
0.510
QTS
0.450
Cms
212
BL
15.00 TM
Mms
179 g

and right now i also have a KENWOOD KAC-728 powering it...here are the specs on this amp...

Key Features:
Maximum Output Power: 600 Watts x 1
Power Ratings:
Bridged Power Output at 14.4V (1kHz, 0.8% THD): 300 Watts x 1
Maximum Output Power: 600 Watts x 1
Power Output at 2 Ohms, at 14.4V (1kHz, 0.8% THD): 150 Watts x 2
Power Output at 4 Ohms, at 14.4V (20Hz-20kHz, 0.08% THD): 100 Watts x 2
Power Supply Features 2-Ohm Stable
Black Anodized Top Cover: with Aluminum Heat Sink Plate
Copper-Shielded EE Core Transformer
Large Secondary Capacitors
Large Toroidal Noise Suppression Filter
Power Indicator
Power Input Terminals: Gold-Plated
Power MOSFET Switching Power Supply
Audio Features Ground Isolation Circuit
Quiet Turn-On
RCA Audio Inputs: Gold-Plated
Selectable Low-Pass Electronic Crossover
Speaker Connectors: Gold-Plated
Speaker Level Input Terminals
Speaker Relay Protection
Stereo, Mono, or Tri-Mode Operation

Now my question is will getting a KENWOOD KAC-929 be better for my subs? I can get this amp for about $220 including a 1 farad RF cap. (which i need)...here are the specs on this amp...

GENERAL FEATURES
- Ground Isolation Circuit
- Low-Pass Electronic Crossover
- Power MOSFET Switching Power Supply
- Stereo, Mono, or Tri-Mode Operation
- Variable Low-Pass Electronic Crossover: 50Hz - 200Hz, 18dB per Octave

POWER RATINGS
- Bridged Power Output at 14.4V (1kHz, 0.8% THD): 460 Watts x 1
- Maximum Output Power: 1000 Watts
- Power Output at 2 Ohms, at 14.4V (1kHz, 0.8% THD): 230 Watts x 2
- Power Output at 4 Ohms, at 14.4V (20Hz-20kHz, 0.08% THD): 150 Watts x 2

AUDIO FEATURES
- Quiet Turn-On
- RCA Audio Inputs: Gold-Plated
- Speaker Connectors: Gold-Plated, Screw-Type
- Speaker Level Input Terminals
- Speaker Relay Protection

POWER SUPPLY FEATURES
- 2-Ohm Stable
- Black Powder-Coated Top Cover: with Sandblast Finish
- Copper EE-Core Power Transformer
- Large Aluminum ID Badge
- Noise Supression Filter: 3
- Power Indicator: Blue
- Power Input Terminals: Gold-Plated, Large Screw-Type
- Secondary Capacitors: 2 Large

AMPLIFIER FEATURES
- 2 or 1 Channels of Amplification
- Cooling Fan

 

mo powa,
mo betta