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Rockville K5 W12K5S4 1400 Watt 4 Ohm Car Audio Subwoofer Sub 350w RMS CEA Rated!

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Condition and Warranty

Condition: SLIGHTLY USED TESTED TO BE PERFECTLY FUNCTIONAL,IN GOOD COSMETIC CONDITION MAY HAVE MINOR SCRATCHES

Warranty: 1 YEAR AUDIOSAVINGS

Product Description

Video of K5 SERIES:

Features:

  • Rockville W12K5S4 K5 Series 12" 4-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 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: 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

3.31

Ohm

electrical voice coil resistance at DC

Le

0.944

mH

frequency independent part of voice coil inductance

L2

1.468

mH

para-inductance of voice coil

R2

14.7

Ohm

electrical resistance due to eddy current losses

Cmes

871.67

μF

electrical capacitance representing moving mass

Lces

20.9

mH

electrical inductance representing driver compliance

Res

31.48

Ohm

resistance due to mechanical losses

fs

37.3

Hz

driver resonance frequency

 

 

 

 

Mechanical Parameters

 

 

 

(using laser)

 

 

 

Mms

130.02

g

mechanical mass of driver diaphragm assembly including air load and voice coil

Mmd (Sd)

117.731

g

mechanical mass of voice coil and diaphragm without air load 

Rms

4.738

kg/s

mechanical resistance of  total-driver losses

Cms

0.14

mm/N

mechanical compliance of driver suspension

Kms

7.14

N/mm

mechanical stiffness of driver suspension

Bl

12.213

N/A

force factor (Bl product)

Lambda s

0.028

 

suspension creep factor

 

 

 

 

Loss factors

 

 

 

Qtp

0.612

 

total Q-factor considering all losses

Qms

6.429

 

mechanical Q-factor of driver in free air considering Rms only

Qes

0.675

 

electrical Q-factor of driver in free air considering Re only

Qts

0.611

 

total Q-factor considering Re and Rms only

Other Parameters

 

 

 

Vas

47.7813

l

equivalent air volume of suspension

n0

0.353

%

reference efficiency (2 pi-radiation using Re)

Lm

87.67

dB

characteristic sound pressure level (SPL at 1m for 1W @ Re)

Lnom

88.5

dB

nominal sensitivity (SPL at 1m for 1W @ Zn)

 

 

 

 

rmse Z

3.94

%

root-mean-square fitting error of driver impedance Z(f)

rmse Hx

2.2

%

root-mean-square fitting error of transfer function Hx (f)

Sd

490.87

cm2

diaphragm area

Owner's Manual

Return Policy

AudioSavings Return Policy:

At Audiosavings, we strongly believe in customer satisfaction and therefore offer free return shipping within 30 days of purchase on all items returned to us within the continental USA.

Prior to returning merchandise, contact us and we will give you a return authorization # and a return label.

You may return this item for a refund within 30 DAYS of purchase.

Warranty Repair/Exchange Period: 1 YEAR

If your item is defective or you want to return it for any reason within the first 30 days of when it was delivered to you; you have the following options:

  • We will send you a pre-paid shipping label to replace the item for a brand new one.
  • We will send you a pre-paid shipping label to exchange the item for another item of your choice. If the item you chose is more or less money we will work out the price difference with you.
  • If you are returning a working item in used condition for a refund there will be a 20% used item fee deducted from your refund. All replacements and exchanges are free.
Replacement/Processing Time:

Your replacement or refund will process within 3-5 business days of when we receive the item.

Please note items with physical damage un-related to shipping are not covered under warranty. Registered software cannot be returned.

You MUST notify us within 48 hours if you receive an item that was damaged during shipping.

Process for returning items

Please email us with your eBay user ID, Item code / model #, Condition of the item, and the reason for your return. Please also indicate whether you would like a replacement, an exchange, or a refund. We will supply you with a reference number (RMA #) to put on the package which will ensure quick processing of your return. All returns require a RMA# to be returned back to our facility.

Item Code: W12K5S4 U

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