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Rockville K5 W8K5S4 8" 800w 4 Ohm Car Audio Subwoofer Sub 200w RMS CEA Rated!

SKU:
W8K5S4
$79.99 $39.95
(You save $40.04)
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Condition:
New
SHADOWPARENT:
SHADOWS:
KITPARENTS:
(2) W8K5S4+dB11+RWK81, (2) W8K5S4+dB11+RWK81+RDE8+K2, (2) W8K5S4+dB11+RWK81+RQB8+K2, (2) W8K5S4+RDE8+K2, (2) W8K5S4+RQB8+K2, (4) W8K5S4+REC120+(2) K2, (4) W8K5S4+REC121+(2) K2, W8K5S4+dB10+RWK81, W8K5S4+RQB8 SINGLE+K1, W8K5S4+RSE8+K1
KITCOMPONENTS:
Bundle:
No
Custom_Condition:
BRAND NEW IN ORIGINAL PACKAGING

Warranty Information:

1 YEAR

New orders ship within 1-2 business days.

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Bundles That Include This Item

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

Qms

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

Owner's Manual

1 YEAR
  • UPC:
  • 819216024614

Car Subwoofer Impedance Wiring Guide

Use our car subwoofer and amp wiring diagrams to figure out which amplifier is compatible with your subwoofer(s) and how to wire it properly.

New orders ship within 1-2 business days.
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