Rockville K5 W12K5S2 12" 1400w 2 Ohm Car Audio Subwoofer Sub 350w RMS CEA Rated!
Product Description
Features:
- Rockville W12K5S2 K5 Series 12" 2-Ohm Car Subwoofer
- Peak Power Handling: 1400 Watts
- Program Power Handling: 700 Watts
- CEA Rated RMS Power Handling: 350 Watts
- 2" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire
- The wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire
- 50 Oz High Quality Magnet
- Cast Iron Basket With Black Sanded Finish
- Fiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone – This cone is very efficient which makes the speaker sound louder even without requiring a lot of power to push it
- Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion
- Blue Stitching Cone Reinforcement Ensures Long Life
- Paper Dustcap is light weight and efficient helping the sub to play louder even if your amp is not so powerful
- Chrome-Plated Binding Post Terminals - These are the best terminals on the market and they accept any gauge wire
- Impedance: Single 2-Ohm Voice Coil
- Vented Hole on T-yoke Enhances Heat Dissipation
- Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet
- Mounting Gasket with Rockville branding looks great and Makes it Easy To Mount the Subwoofer Air-Tight
- High BL Magnetic Motor Gap
- We use the highest grade black glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated
- Cutout Diameter: 11.02” inches
- Mounting Depth: 5.03” inches
- Frequency Response: 25 Hz - 1.5K kHz
- 6mm T-Yoke + 6mm Washer
- Sensitivity: 88dB
- Sealed Enclosure Volume: 0.8 – 1.3 Cubic Feet
- Vented/Ported Enclosure Volume: 1.3 – 2.0 Cubic Feet
- Weight: 10.1 Lbs.
- Shipping Weight: 11.6 Lbs.
- Shipping Box Dimensions: 13.78" x 13.78" x 8.97" Inches
Detailed Info:
- Body: Non-Pressed Paper
- Gap Plate Inside Diameter: 80mm (3.14 inches)
- Gap Plate Outside Diameter: 156mm (6.14 inches)
- Gap Plate Thickness: 25mm (0.98 inches)
- Yoke Outside Diameter: 145mm (5.7 inches)
- Yoke Thickness: 6mm (0.23 inches)
- Yoke Pole Diameter: 50mm (2 inches)
T/S Parameters (Tested on a Klippel)
|
Electrical Parameters |
|
|
|
|
Re |
2.06 |
Ohm |
electrical voice coil resistance at DC |
|
Le |
0.689 |
mH |
frequency independent part of voice coil inductance |
|
L2 |
1.367 |
mH |
para-inductance of voice coil |
|
R2 |
12.77 |
Ohm |
electrical resistance due to eddy current losses |
|
Cmes |
1339.39 |
μF |
electrical capacitance representing moving mass |
|
Lces |
11.94 |
mH |
electrical inductance representing driver compliance |
|
Res |
20.04 |
Ohm |
resistance due to mechanical losses |
|
fs |
39.8 |
Hz |
driver resonance frequency |
|
|
|
|
|
|
Mechanical Parameters |
|
|
|
|
(using laser) |
|
|
|
|
Mms |
130.909 |
g |
mechanical mass of driver diaphragm assembly including air load and voice coil |
|
Mmd (Sd) |
118.62 |
g |
mechanical mass of voice coil and diaphragm without air load |
|
Rms |
4.878 |
kg/s |
mechanical resistance of total-driver losses |
|
Cms |
0.122 |
mm/N |
mechanical compliance of driver suspension |
|
Kms |
8.19 |
N/mm |
mechanical stiffness of driver suspension |
|
Bl |
9.886 |
N/A |
force factor (Bl product) |
|
Lambda s |
0.025 |
|
suspension creep factor |
|
|
|
|
|
|
Loss factors |
|
|
|
|
Qtp |
0.628 |
|
total Q-factor considering all losses |
|
Qms |
6.711 |
|
mechanical Q-factor of driver in free air considering Rms only |
|
Qes |
0.689 |
|
electrical Q-factor of driver in free air considering Re only |
|
Qts |
0.625 |
|
total Q-factor considering Re and Rms only |
|
|
|
|
|
|
Other Parameters |
|
|
|
|
Vas |
41.6524 |
l |
equivalent air volume of suspension |
|
n0 |
0.366 |
% |
reference efficiency (2 pi-radiation using Re) |
|
Lm |
87.84 |
dB |
characteristic sound pressure level (SPL at 1m for 1W @ Re) |
|
Lnom |
87.71 |
dB |
nominal sensitivity (SPL at 1m for 1W @ Zn) |
|
|
|
|
|
|
rmse Z |
6.15 |
% |
root-mean-square fitting error of driver impedance Z(f) |
|
rmse Hx |
3.07 |
% |
root-mean-square fitting error of transfer function Hx (f) |
|
|
|
|
|
|
Series resistor |
0 |
Ohm |
resistance of series resistor |
|
Sd |
490.87 |
cm2 |
diaphragm area |
