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Diamond Audio D391i

6" x 9" 2-way Speakers

5.0

(1 review)

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The product on this page is discontinued.

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  • 6" x 9" 2-Way Speakers
  • Peak Power Handling: 150 Watts
  • RMS Power Handling: 75 Watts
  • 4 Ohm Impedance
  • Textured Copolymer Cones
  • Butyl Rubber Surrounds
  • Heavy Gauge Proprietary Frames
  • Flat Progressive Spider
  • Extended Pole Motor Design
  • Rubber Magnet Protector
  • Aluminum Dome Tweeters with Ferro-Fluid Cooling
  • Integrated Crossovers
  • Bi-Amp Capable
  • Shallow Mount
  • 1-year SonicElectronix.com warranty
Product History:
Diamond Audio D392i thumbnail
(newest, current model)
Diamond Audio D391i thumbnail
(previous model, replaced by Diamond Audio D392i)
Speaker Specifications
Speaker Size6" x 9"
Design2-way
Peak Power Handling150 watts
RMS Power Handling75 watts
Sensitivity91.5 dB
Frequency ResponseN/A
Impedance (Per Voice Coil)4 ohms
Top-Mount Depth3.03"
Bottom-Mount DepthN/A
Cutout Dimensions4.92 x 8.43 
Warranty and Return Policy
Return Policy Standard Return Policy
Customer Review Summary for Diamond Audio D391i
Average Customer Rating is 5.0 out of 5 stars:
5.0
based on 1 Reviews
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Rating Distribution:
5 star:
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4 star:
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3 star:
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what's this?
Average Attributes Rating:
Durability
5.0
Value
5.0
Features
5.0
Design
5.0
Usability
5.0
what's this?
Most Helpful Customer Reviews:
January 22, 2006 Great Price, Good Speaker
Review by
Eric from APO, AP
Overall
Durability
Value
Features
Design
Usability
Really good speaker for the money. I love Diamond Audio and sonix for carrying these speakers. Handles high power with ease, sounds better than most component 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: Diamond Audio
Model number: D391i
Weight: 11.00 lbs
Internal SKU: d391i
Internal product ID: 5352

Why Sonic Electronix?

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

Customer Testimonial

Sonic Electronix was great! I was skeptical at first... their prices were pretty low, so I thought I would be sacrificing service or quality because of that. When I got my car stereo and everything that they said they would include with it, I was very satisfied! I will definitely be back. Thanks!

- Devin from Holladay, UT

See more…

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