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Diamond Audio D663A

6-1/2" 2-way convertible speaker system with aluminum tweeters

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  • Diamond Audio D663A

    Front

  • Diamond Audio D663A

    Aluminum and silk tweeters

  • Diamond Audio D663A

    Back

  • Diamond Audio D663A

    Other

  • Diamond Audio D663A

    Other

  • Diamond Audio D663A

    Other

  • Diamond Audio D663A

    Rear Fill diagram

Item# 114D663A offer details

Item# 114D663A

Review Summary

 
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Diamond Audio

Why replace your car's original speakers?

The speakers that originally came in your car were made from inexpensive materials, designed to create acceptable sound at the lowest possible cost to the manufacturer. If you love music, you deserve better. Name-brand aftermarket speakers deliver fuller, richer sound with considerably more detail and nuance, and they're capable of playing louder and cleaner than factory speakers. Connect new speakers to your factory radio and you'll get the best possible sound from your dealer-equipped system. Pair them up with a new car stereo for a level of enjoyment that can rival a high-fidelity home audio experience.

Our take on the Diamond Audio D663A

by Jo Greene

D6 Series convertible speakers

You'll spend a Saturday afternoon giving your ride the old buff 'n shine — now it's time to brighten up your music with new speakers. Diamond Audio designed D6 Series speakers for polished, refined performance that'll make for a very entertaining ride, even if it's just across town.


Removable 1" aluminum tweeters

This D663A 6-1/2" convertible speaker system features 1" aluminum dome tweeters that deliver shimmering highs, so you'll hear layers of juicy detail in your favorite tunes. Detachable tweeters give you installation flexibility — you can drop this convertible system into your doors as a factory replacement, or mount the tweeters separately to create a custom soundstage.


Choose your tweeter

Aluminum and silk tweeters

The experts at Diamond Audio understand that tweeter material makes a big difference in the way your music sounds. If you like crisp, extended highs, then you'll love how these aluminum dome tweeters bring out sparkling detail in your music. If you prefer your music to sound smooth and mellow, check out the D663S 6-1/2" convertible speaker system — it offers the same performance, but with a warmer sound of silk tweeters.


Lightweight anodized aluminum woofer

Diamond Audio uses an anodized aluminum to craft a woofer cone that's rigid and extremely lightweight, so this woofer works accurately and efficiently, for powerful performance. This aluminum cone also helps direct damaging heat outward and upward, away from the voice coil and motor structure.


Non-resonant frame and versatile crossover network

ABS frame

Diamond uses a unique energy-absorbent ABS composite frame that resists unwanted resonance better than steel or aluminum, so your favorite music sounds just as the artist intended. The outboard crossover networks also give you plenty of installation flexibility, including the ability to adjust phase and attenuation. You'll also find Diamond Audio's unique "Rear Acoustic Fill" feature — a set of outputs on each network that allows you to power an extra set of rear speakers safely.


Highlights:

  • 6-1/2" 2-way convertible speaker system
  • anodized aluminum woofer cone with rubber surround
  • 1" aluminum dome tweeter
  • non-resonant ABS composite frame
  • power range: 8-75 watts RMS (150 watts peak power)
  • frequency response: 45-22,000 Hz
  • sensitivity: 91.3 dB
  • top-mount depth: 2-3/8"
  • warranty: 1 year
  • Our 60-day money-back guarantee
Shop all Diamond Audio 6-1/2" Speakers
     

    Hands-on research from the Crutchfield Labs (what are the Labs?)

    Features and Specs

    Features and Specs
    General
    Design
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    2-way
    Tweeter Design
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    1" Dome
    Tweeter Composition
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    Aluminum
    Woofer Composition
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    Anodized Aluminum
    Woofer Surround
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    Rubber
    Parts Warranty
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    1 Year
    Labor Warranty
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    1 Year
    Specifications
    Sensitivity
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    91.3 dB at 2.83 volts
    Frequency Response
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    45 - 22k Hz
    RMS Power Range (Watts)
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    8-75
    Peak Power Handling (Watts)
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    150
    Impedance (Ohms)
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    4
    Top-mount Depth (Inches)
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    2 3/8
    Bottom-mount Depth (Inches)
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    2 5/8
    Cutout Diameter or Length (inches)
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    5 1/2

    Product Research

    Product Research
    What's in the box?

    Download owner's manual

    • 2 Woofers
    • 2 Tweeters (coaxially mounted on the woofers)
    • 2 Phase plugs
    • 2 Crossovers
    • 2 Woofer grilles
    • 2 Woofer grille frames
    • 2 Flush-mount tweeter mounting cups
    • 2 Metal spring clips for flush-mount tweeter cups
    • 2 Surface-mount tweeter housings
    • 2 Adhesive backed woofer gaskets
    • Two M4x30mm Machine screws
    • Four 1/2" Self-tapping screws
    • Twelve 3/4" Self-tapping screws
    • 12 Speed clips
    • Putty for woofer grilles
    • 4 Crimp-on 0.110" quick slides
    • Owner's Manual

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Features

    Woofers: The Diamond Audio D663a convertible component system includes woofers with anodized aluminum cones, providing a rigid moving mass to reproduce bass frequencies at high levels. The speakers are shipped with the tweeters coaxially mounted to the woofers, but they can be removed and mounted separately, as a component set. When the tweeters are removed the woofer's mounting height decreases to 0.35" (if bottom mounted the tweeter protrusion decreases to 0.14").

    Woofer Size: Diamond Audio refers to the D663a as a 6-1/2" speaker. The approximately 5-1/2" cutout diameter, however, fits the industry standard for a 6-3/4" speaker. Please confirm fit using the Crutchfield Vehicle Selector before purchasing.

    Magnet Cover: The speakers are shipped with rubber magnet covers installed. If needed, the covers can be removed, effectively making the magnet diameter approximately 1/4" smaller and the speaker approximately 1/8" more shallow.

    Tweeters: The 1" aluminum dome tweeters offer outstanding clarity and high frequency extension. When coaxially mounted the tweeters are angled and swivel so you can direct them toward the listening positions.

    Mounting Options: When removed from the woofers, the tweeters can be surface mounted or flush mounted using the included housings.

    Tweeter Dimensions:

      Frame Diameter Cutout Diameter Mounting Height Mounting Depth
    Flush Mount 1.89" 1.64" 0.43" 0.875"
    Angled Surface Mount 1.7" N/A 1.05" Screw Depth

    Crossover:

    • Tweeter Output: The crossovers offer two tweeter output level settings, selectable via an internal jumper: flat and -2 dB.
    • Tweeter Phase: The tweeter phase can also be easily reversed using jumpers in the crossovers.
    • RAF: In addition to the woofer and tweeter outputs, each crossover has a third output for a Rear Acoustic Fill (RAF) speaker. The RAF speakers are powered by the same 2-channel amp as the component set and are apportioned 15%-20% of the total power. The RAF output is full range.
    • Barrier Strips: Each crossover's connections are screw terminals that will accommodate spade connectors up to 0.375" wide.
    • Dimensions: The crossover has the following dimensions:
      • Width: 5.945"
      • Height: 1.587"
      • Depth: 4.910"
    • Connection Note: The component system comes with no speaker wire (other than the length attached to each tweeter).
     

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    Reviews for the Diamond Audio D663A

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    5 out of 5

    Diamond Audio D663A

    Written By Stuart, Winchester, VA on Thursday, July 07, 2011
     
    I purchased the 5 inch version of the D6 speakers a couple weeks ago from a local dealer just before crutchfield picked them up. I have these speakers up front with the tweeters in the stock mounting locations and D3 6" coaxials in the back currently powered by the stock infiniti amp through a Pioneer AVH8200 head unit. Needless to say these speakers are by far the best I've had in any of my vehicles with polk, alpine or MB Quartz speakers. The tweeters are very sharp(I had to attenuate them down -2dB on the crossover) and the midbass is great and everything from bluegrass to rock and rap sounds fantastic through them. Without my subs hooked up yet I'm running them with a filter at 50 Hz and the bass is really punchy especially in the 80Hz range. Can't want to get them hooked up to a legit amp and add some subs to the mix...I imagine the 6.5's sound even better
    5 out of 5 people found this helpful
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    Rated 5-stars by consumers

    For a more in-depth review and enhanced detailed information on the Diamond Audio D663A, please visit the Crutchfield website product page (/S-s0miHTds9n0/p_114D663A/Diamond-Audio-D663A.html ).

    Sorry, the Diamond Audio D663A is no longer available for purchase.

    • Front

      Diamond Audio D663A
    • Aluminum and silk tweeters

      Diamond Audio D663A
    • Back

      Diamond Audio D663A
    • Other

      Diamond Audio D663A
    • Other

      Diamond Audio D663A
    • Other

      Diamond Audio D663A
    • Rear Fill diagram

      Diamond Audio D663A