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Polk Audio db690

db Series 6" x 9" 3-way Speakers (db 690)

4.5

(2 reviews)

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The product on this page is discontinued, but there is a newer model available:
Newer Model: Polk Audio db691
db691 thumbnail
$109.95In Stock

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  • 6" x 9" 3-way Speakers (Marine Certified)
  • Power Handling:
    • 100 watts RMS
    • 300 watts Max
  • Lightweight Dynamic Balance Polymer/Mica Composite Mineral Filled Cone
  • Marine Certified, perfect for use in marine vessels
  • 1" Liquid-Cooled Silk/Polymer composite Dome Midrange
  • 3/4" Tweeter
  • High Pass and Low Pass Crossover Filters
  • Low-mass 2-Layer 25mm Kapton Voice Coil former
  • Multi-Hole Mounting Pattern
  • Shallow Depth
  • Muscular ABS Grilles (Based on MOMO Designs)
  • Durable Butyl Rubber Surround
  • Pole Plate Heat Sink
  • Flat Spider for faster, longer excursion linear motion
  • Flexible Woven Leads sewn directly into Spider for greater reliability
  • Polarized Nickel Plated Terminals on PCB terminal board
  • Stamped Steel Basket finished in rustproof Gun Metal Gray
  • Frequency Response: 35 - 22,000 Hz
  • Sensitivity: 93 dB
  • 4 ohm Impedance
  • 1-year SonicElectronix.com warranty
Product History:
Polk Audio db691 thumbnail
(newest, current model)
Polk Audio db690 thumbnail
(previous model, replaced by Polk Audio db691)
Speaker Specifications
Speaker Size6" x 9"
Design3-Way Speakers
Tweeter Design1" Midrange, 3/4" Tweeter
Tweeter CompositionSilk/Polymer Composite
Woofer CompositionPolymer/Mica Composite
Woofer SurroundButyl Rubber
Peak Power Handling300 watts
RMS Power Handling100 watts
Sensitivity93 dB
Frequency Response35 - 22,000 Hz
Impedance (Per Voice Coil)4 ohms
Top-Mount Depth3-3/16"
Bottom-Mount Depth3-3/4"
Cutout Dimensions8-1/2 x 5-3/4 
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Polk Audio db690
Average Customer Rating is 4.5 out of 5 stars:
4.5
based on 2 Reviews
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Rating Distribution:
5 star:
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50%
4 star:
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50%
3 star:
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2 star:
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1 star:
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what's this?
Average Attributes Rating:
Durability
4.5
Value
5.0
Features
4.5
Design
5.0
Usability
5.0
what's this?
Most Helpful Customer Reviews:
July 12, 2007 intense
Review by
Anton from Woodbridge, ON, Canada
Overall
Durability
Value
Features
Design
Usability
very very nice speakers... got them from Sonic and am extremely happy with the purchase. Powerfull and clean sound these speakers sound just as good as they look
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March 2, 2007 Nice Speakers
Review by
Keith from Atlanta, GA
Overall
Durability
Value
Features
Design
Usability
I ran these on 50 watts each and they were very crisp and clean. They got very loud and maintained clarity. Great budget speakers
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Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
 ProductPriceAdd?
20 ft. of 16 AWG KICKER X-Series Speaker Wire20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.		$19.99
50 ft. of 14 AWG StreetWires Speaker Cable50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.		$29.99
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
NVX SDSK2 Speaker KitNVX SDSK2 Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!		$19.99
NVX SDRLR1 Sound Dampening Rubber RollerNVX SDRLR1 Sound Dampening Rubber Roller
Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!		$8.95
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
 ProductPriceAdd?
Door Panel & Upholstery Remover ToolDoor Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!		$11.99
Universal Window Handle Remover ToolUniversal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.		$4.99
Universal Wire Puller & GrabberUniversal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!		$8.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD		$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.		$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.		$12.99

Product Summary

Manufacturer: Polk Audio
Model number: db690
Weight: 9.00 lbs
Internal SKU: db690
Internal product ID: 6993

Why Sonic Electronix?

Musical Mayhem Sweepstakes sponsored by MTX Audio. 3 winners, $2,300 in prizes!

Customer Testimonial

Best price and best service. Not a common combo for internet companies. E-mails every step of the way so you know what is going on with your order and when it is coming. The free installation products is icing on the cake. Thank you SE

- Happy User from Michigan

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