- (4) Rockville K5 W8K5S4 8" 800w 4 Ohm Car Audio Subwoofer Sub 200w RMS CEA Rated!
- (1) Rockville Quad 8" Sub Box For 2009-2020 FORD F150 SUPER CREW+2017-2020 F250/350
- (2) Dual Sub Box Enclosure Installation Kit: Speaker Wire, Screws, Spade Terminals
Video of K5 SERIES:
Features:
- Rockville W8K5S4 K5 Series 8" 4-Ohm Car Subwoofer
- Peak Power Handling: 800 Watts
- Program Power Handling: 400 Watts
- CEA Rated RMS Power Handling: 200 Watts
- 1.5" 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
- 30 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 Dust cap 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 4-Ohm Voice Coils
- 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: 7.16 inches
- Mounting Depth: 3.54 inches
- Frequency Response: 37 Hz - 1.3K kHz
- 5mm T-Yoke + 5mm Washer
- Sensitivity: 85.7dB
- Sealed Enclosure Volume: 0.35 – 0.85 Cubic Feet
- Vented/Ported Enclosure Volume: 0.6 – 1.2 Cubic Feet
- Weight: 5.2 Lbs.
- Shipping Weight: 6.5 Lbs.
- Shipping Box Dimensions: 10.25x 10.25 x 8.1 Inches
Detailed Info:
- Body: Non-Pressed Paper
- Gap Plate Inside Diameter: 60mm (2.36 inches)
- Gap Plate Outside Diameter: 120mm (4.72 inches)
- Gap Plate Thickness: 25mm (0.98 inches)
- Yoke Outside Diameter: 114mm (4.48 inches)
- Yoke Thickness: 5mm (0.20 inches)
- Yoke Pole Diameter: 38mm (1.5 inches)
T/S Parameters (Tested on a Klippel):
|
Electrical Parameters |
|
|
|
|
Re |
3.43 |
Ohm |
electrical voice coil resistance at DC |
|
Le |
0.899 |
mH |
frequency independent part of voice coil inductance |
|
L2 |
1.32 |
mH |
para-inductance of voice coil |
|
R2 |
13.71 |
Ohm |
electrical resistance due to eddy current losses |
|
Cmes |
610.26 |
μF |
electrical capacitance representing moving mass |
|
Lces |
20.57 |
mH |
electrical inductance representing driver compliance |
|
Res |
34.13 |
Ohm |
resistance due to mechanical losses |
|
fs |
44.9 |
Hz |
driver resonance frequency |
|
|
|
|
|
|
Mechanical Parameters |
|
|
|
|
(using laser) |
|
|
|
|
Mms |
54.697 |
g |
mechanical mass of driver diaphragm assembly including air load and voice coil |
|
Mmd (Sd) |
51.475 |
g |
mechanical mass of voice coil and diaphragm without air load |
|
Rms |
2.626 |
kg/s |
mechanical resistance of total-driver losses |
|
Cms |
0.229 |
mm/N |
mechanical compliance of driver suspension |
|
Kms |
4.36 |
N/mm |
mechanical stiffness of driver suspension |
|
Bl |
9.467 |
N/A |
force factor (Bl product) |
|
Lambda s |
0.046 |
|
suspension creep factor |
|
|
|
|
|
|
Loss factors |
|
|
|
|
Qtp |
0.538 |
|
total Q-factor considering all losses |
|
5.879 |
|
mechanical Q-factor of driver in free air considering Rms only |
|
|
Qes |
0.591 |
|
electrical Q-factor of driver in free air considering Re only |
|
Qts |
0.537 |
|
total Q-factor considering Re and Rms only |
|
Other Parameters |
|
|
|
|
Vas |
13.1298 |
l |
equivalent air volume of suspension |
|
n0 |
0.194 |
% |
reference efficiency (2 pi-radiation using Re) |
|
Lm |
85.07 |
dB |
characteristic sound pressure level (SPL at 1m for 1W @ Re) |
|
Lnom |
85.74 |
dB |
nominal sensitivity (SPL at 1m for 1W @ Zn) |
|
|
|
|
|
|
rmse Z |
4.04 |
% |
root-mean-square fitting error of driver impedance Z(f) |
|
rmse Hx |
2.29 |
% |
root-mean-square fitting error of transfer function Hx (f) |
|
Sd |
201.06 |
cm2 |
diaphragm area |
Features of REC121:
- 3/4" MDF
- Silver Tipped Screw Down Spring Loaded Terminals
- Finished with Bed Liner
Specification:
- Air Space: 0.80 Cubic Feet (per sub)
- Mounting Depth: 11.25"
- Tuning Frequency: 33Hz
- Dimensions: 54.5" x 13.875" x 14.5"
Complete Dual Subwoofer Enclosure Installation Kit!
Includes:
- 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
- 20 Feet of 14 AWG Blue Speaker Wire
- 4 Spade Terminals
This accessory package includes everything you need to install two subwoofers into an enclosure, and wire your enclosure to your amplifier. This package is a top of the line accessory package which we put together and tested.
The drywall wood screws were hand selected by our installation experts because they drill into the enclosure very cleanly, without chipping the enclosure. The speaker wire is 14 gauge. This is way better than using 16 gauge. You can be 100 % sure that your enclosure will have a clean signal to the amplifier with this top of the line speaker wire. These spade terminals have also been hand selected by our installation experts to make the internal wiring simple, secure, and to run the audio signal cleanly.
- UPC:
- 613817029289
