Kenwood KFC-W3011 Manual

The Kenwood KFC-W3011 is a 12-inch 4-ohm subwoofer featuring a polypropylene cone with mica reinforcement, high-temperature voice coil, optimized magnetic circuit design, and stamped steel basket. With a power handling of 300W RMS (900W peak), frequency response of 25Hz-1kHz, and sensitivity of 91dB, it delivers deep bass performance for car audio systems. Below are key sections for features, installation, specifications, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. Specifications 4. Wiring Configuration 5. Enclosure Recommendations 6. Operation Guidelines 7. Care & Maintenance 8. Troubleshooting 9. Warranty Information

Features at a Glance

Key components: 12-inch subwoofer with polypropylene cone, stamped steel basket, high-temp voice coil, and optimized magnet structure.

Feature	Description
Cone Material	Polypropylene with mica reinforcement
Basket	Stamped steel for durability
Voice Coil	High-temperature capable
Magnet	Optimized magnetic circuit design
Impedance	4 ohms
Power Handling	300W RMS / 900W peak
Sensitivity	91dB (1W/1m)
Frequency Response	25Hz - 1kHz
Mounting Depth	5-1/8 inches
Cut-out Diameter	11-1/8 inches

Installation

Proper installation ensures optimal performance and longevity.

Choose appropriate enclosure: Sealed or ported box according to specifications.
Mounting: Ensure secure mounting with proper clearance for cone excursion.
Wiring: Connect positive and negative terminals to amplifier outputs.
Amplifier setup: Set crossover, gain, and phase controls appropriately.

WARNING! Disconnect vehicle battery before installation to prevent electrical shorts.

Specifications

Size: 12 inches
Impedance: 4 ohms
Power Handling: 300W RMS / 900W peak
Frequency Response: 25Hz - 1kHz
Sensitivity: 91dB (1W/1m)
Voice Coil Diameter: 1.5 inches
Magnet Weight: 40 oz
Mounting Depth: 5-1/8 inches
Cut-out Diameter: 11-1/8 inches
Overall Diameter: 12-1/2 inches

Wiring Configuration

Single voice coil design with straightforward wiring options.

Identify terminals: Red (+) and Black (-) binding posts.
Amplifier connection: Match polarity from amplifier to subwoofer.
Multiple subwoofers: Wire in series or parallel to achieve desired impedance.
Check connections: Ensure secure connections without loose strands.

Tip: Use appropriate gauge wire based on power requirements and distance.

Enclosure Recommendations

Optimal performance depends on proper enclosure selection.

Enclosure Type	Volume	Tuning Frequency
Sealed	1.0 - 1.5 cu. ft.	N/A
Ported	1.5 - 2.0 cu. ft.	30-35Hz
Bandpass	As per design	35-45Hz

CAUTION! Do not exceed recommended enclosure volumes to prevent damage.

Operation Guidelines

For optimal performance and longevity:

Break-in period: Play at moderate volumes for first 10-15 hours.
Amplifier settings: Set crossover between 60-80Hz for optimal integration.
Gain adjustment: Match amplifier gain to head unit output level.
Volume control: Avoid continuous operation at maximum power.

WARNING! Excessive power or improper settings can cause permanent damage.

Care & Maintenance

Regular maintenance ensures long-term performance.

Cleaning: Use soft, dry cloth to remove dust from cone and surround.
Inspection: Periodically check for torn surround or damaged cone.
Terminals: Ensure connections remain tight and corrosion-free.
Storage: Store in dry environment when not in use.

CAUTION! Do not use solvents or liquids for cleaning.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Wiring/amplifier	Check connections; verify amplifier power; test with multimeter.
Distorted sound	Overpowering/clipping	Reduce gain; check enclosure for air leaks; verify impedance.
Rattling noise	Loose mounting	Tighten mounting hardware; check for foreign objects in gap.
Intermittent operation	Loose wiring	Inspect all connections; check terminal tightness.
Overheating	Insufficient ventilation	Ensure proper airflow; reduce volume; check impedance match.

Warranty Information

Kenwood KFC-W3011 comes with limited warranty covering manufacturing defects. Warranty period and terms vary by region. For warranty claims, contact authorized Kenwood dealer with proof of purchase. Warranty does not cover damage from improper installation, abuse, or unauthorized modifications.

Support: Contact Kenwood customer service at 1-800-536-9663 or visit www.kenwood.com