Kicker 51KSS6904 KS Series 6"x9" 150W RMS (300W Peak Power Handling) 4 Ohms, Car Component Speaker System
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What's Inside?
- • 6"x9" KS Series Component Speaker System
- • (2) KSS690 Woofers
- • (2) phase plugs (installed)
- • (2) 1" Tweeters (each with 6" Wire attached)
- • (2) Woofer mounting brackets
- • (2) Woofer bottom mount spacers
- • (2) Woofer grilles
- • (2) Grille mounting rings
- • (2) Crossovers
- • (2) Upper tweeter mounting posts
- • (2) Lower tweeter mounting posts
- • (2) Tweeter housings
- • (2) Tweeter housing washers
- • (2) Flush mount rings (tweeter)
- • (2) Front angle rings (tweeter)
- • (2) Back angle rings (tweeter)
- • (2) Short mounting nuts (tweeter)
- • (2) Long mounting nuts (tweeter)
- • (2) Surface mount pods
- • (2) Pod nuts
- • Tweeter tool
- • (2) 10" Zip ties
- • (2) Adhesive backed foam pads
- • Grille putty
- • (4) Red plastic wire caps
- • (2) M4x7mm Machine screws
- • (12) 1-1/8" Screws
- • Quick-Start guide (English/ Spanish/ German/ French)
- • Woofer template
- • Owner's Manual
Why Choose Kicker 51KSS6904 Component System?
Elevating Your Music with Precision, Power, and Pure Sound
KICKER KS-Series Speakers deliver concert-like music volumes with smooth and subtle tones, thanks to dampened polypropylene woofers and high-quality silk-dome tweeters for accurate midrange, bass, and detailed high-frequency sounds.
Tailor Your Audio Experience with Versatile Precision
Dive into your music with a component system featuring separate tweeters or choose a high-end coaxial system. The unique bullet-style phase plug in the woofers can be swapped with a special adapter, allowing the 25mm silk-dome tweeters to rotate and tilt, offering more flexibility in system design and improving off-axis performance. These speakers are designed for optimal performance in the 15 to 125-watt power range.
Powerful, Flexible Sound
Enjoy high-volume, smooth, and detailed audio with polypropylene woofers and silk-dome tweeters for tight midrange and clear highs. The thin-mount design fits behind most factory grilles, and the system can be used as coaxial or component, with rotatable and tiltable tweeters for superior off-axis performance.
Frequently Asked Questions (FAQ)
- • Why do woofers produce very little bass after installation?
Insufficient bass is usually caused by poor door sealing or incorrect speaker polarity. Check that the woofers are mounted tightly and verify the positive and negative wiring on both sides.
- • Can I use the included mounting brackets and spacers in factory speaker locations?
Yes. The supplied woofer brackets and bottom mount spacers are designed to simplify installation and improve fitment in many factory applications.
- • Why do my tweeters sound too harsh?
Tweeters aimed directly at the listener or excessive treble boost can make the highs sound harsh. Repositioning the tweeters and reducing the treble EQ often produces a smoother response.
- • Do I need to install the passive crossovers included with the system?
Yes. The crossovers ensure the woofers and tweeters receive the proper frequency range for balanced performance and reliable operation.
- • Why do the speakers distort only when the volume is turned up?
Amplifier clipping or incorrect gain settings are the most common causes of distortion at higher listening levels. Proper amplifier tuning and crossover settings will help keep the sound clean.
- • What are the phase plugs on the woofers designed to do?
Phase plugs help improve midrange performance while assisting with heat dissipation around the voice coil. They are factory-installed and should remain in place during normal use.
- • Why does one side of the component system sound quieter than the other?
Uneven output is commonly caused by loose wiring, crossover issues, or incorrect balance settings. Inspect all wiring connections before assuming a speaker has failed.
- • Can I choose different mounting styles for the tweeters?
Yes. The package includes flush-mount rings, angled rings, surface-mount pods, and the necessary hardware for several installation options.
- • Why do my doors rattle more after installing the new speakers?
The higher output can expose loose trim panels, wiring, or mounting clips inside the doors. Tightening the hardware and adding sound-deadening material can significantly reduce vibrations.
- • Can I install this component system without replacing my factory head unit?
Yes. The system will work with most factory stereos, although an aftermarket amplifier will deliver better volume, dynamics, and overall sound quality.
- Diameter : 6x9 Inch
- Sensitivity : 92 dB
- Frequency Response : 35-21000 Hz
- Peak Power Handling : 300 Watts
- RMS Power Handling : 150 Watts
Features:
- Potent Performance: Plays at high volume while keeping music smooth and detailed.
- High-Quality Components: Polypropylene woofers with rubber surrounds and silk-dome tweeters deliver tight midrange, bass, and clear highs.
- Flexible System Design: Can be used as a component system for higher tweeter placement or as a coaxial 2-way system.
- Adjustable Tweeters: 25 mm silk-dome tweeters rotate and tilt for superior off-axis performance.
- Customizable Sound: Outboard crossovers allow frequency direction and tweeter level adjustments.
- Thin-Mount Design: Fits easily behind most factory grilles, while included grilles protect speakers and enhance styling.
Specifications:
- Speaker Size: 6x9"
- Driver Design: 2-way
- Woofer Design: Cone
- Woofer Material: Polypropylene
- Woofer Surround: Rubber
- Tweeter Design: 1" Dome
- Tweeter Material: Silk
- Impedance: 4 Ohm
- Recommended Amplifier Power: 15–150 Watts RMS
- Maximum Peak Power Handling: 300 Watts
- Sensitivity: 92 dB (1W/1m)
- Frequency Response: 30–21,000 Hz
- Woofer Mounting Hole Diameter: 5-5/8" x 8-7/16" (143x215 mm)
- Top Mount Depth: 2-15/16" (75 mm)
- Bottom Mount Depth: 3-3/16" (81 mm)
- Flush Mount Tweeter Hole Diameter: 1-3/4" (45 mm)
- Flush Mount Tweeter Depth: 11/16" (17 mm)
- High Pass: 12 dB at 4,000 Hz
- Low Pass: None
- High Frequency Output Attenuation: 0, 4.5, 9 dB
- Grilles: Included (Black steel mesh with plastic frame)
- UPC: 713034045366
- Weight: 4.8
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
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Thank you Kicker for these amazing speakers! So satisfied with what I got now.
