Blaupunkt GTx 663 DE

6-3/4" 3-way car speakers

Item #: 023GTX663D

Low Stock

8 Reviews

Free Installation gear for most cars

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Get your soundstage back

Blaupunkt's GTx 663 DE 6-3/4” speakers offer the sonic clarity you want for your music at a budget-friendly price. They're a great option for replacing factory speakers that have lost their "stage presence."

Each GTx 663 DE speaker features an injected polypropylene (IPP) woofer for a lively response from your mids and lows. The 3-way speaker design also includes a 1" Mylar dome tweeter and 1/2" super tweeter which deliver all the details and ambience in your music. The speakers' low profile enables you to install them behind the factory grilles in many vehicles, but they also include stylish protective grilles for custom installations.

Product Highlights:

  • 6-3/4" 3-way car speakers (pair)
  • injected polypropylene woofer with foam surround
  • 1/2" dome super tweeter and 1" Mylar dome tweeter
  • black steel basket
  • power range: 2-50 watts RMS (220 watts peak power)
  • frequency response: 40-22,000 Hz
  • sensitivity: 93 dB
  • top-mount depth: 2-1/4"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee

Why replace your factory 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.

Hands-on research

What's in the box?

Download owner's manual

  • Two 3-way speakers
  • 2 Grilles
  • Two 12' Lengths of speaker wire (each has female quick-slides on one end and tinned bare wire on the other)
  • Eight 1-1/8" Self-tapping screws
  • 8 Speed clips
  • Manual
  • Template

Product Research

Features

Size Classification Note: Some manufacturers, including Blaupunkt, call this size speaker a 6-1/2". Because it requires a larger cutout than a standard 6-1/2" speaker, Crutchfield has traditionally referred to this size woofer as a 6-3/4". Please refer to the Crutchfield Vehicle Selector to confirm fit in your vehicle.

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 verify what’s in the box, 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.

Blaupunkt GTx 663 DE Reviews

Average Customer Review:

8 reviews
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Nice speakers

Written By Indyerf, Indiana on Thursday, March 19, 2015

Crutchfield Customer Review (What's this?)

Installed 4 in an 03 Vibe. Installation quick and easy with mounting bracket and harness. Speakers not as 'bassy' as OEM, but sound great with original stereo and amp. Mids and Hi freq sound clearer, will be trying a Pioneer HU in next. Would definitely recommend for the price.

Pros: Installation ease Price Sound

Cons: Too bad the door panel covers these great looking speakers Light on bass response

Better than the factory installed Clarions

Written By peter w, San Diego area on Wednesday, March 04, 2015

Crutchfield Customer Review (What's this?)

Installed in an 05 Sentra, Had to open up the mounting holes slightly - used a step bit. Installation sheet helped IMMENSELY, spot on instructions. I never knew I had fold- down rear seats until today ! The included wiring adapters made life a whole lot easier.

Pros: very good form fit and function

Cons: mounting holes askew

good quality for the dollars

Written By RayC, Nebraska on Saturday, January 31, 2015

Crutchfield Customer Review (What's this?)

Once again I have trusted my choice to Crutchfield and one again, they have come through. I had them professionally installed on my 99 Jag. With prior experience of Blaupunkt I knew I had a relatively inexpensive but good buy. I knew these would be good for my Jag, and I wasn't wrong. It seems the sound is better with the volume set at 14 or 15, rather than cranking them up past 20. I tried all three forms of music that is installed on the Jag. Radio, cd, and yes, even a cassette. The sound level was the same for all three Even with the HK installed system, I was literally amazed at the clearness of the cassette tape and gave it two thumbs up. I then picked out a good ol rock and roll station and set the bass a little heavier, The speakers thumped right along and I could feel the air moving around down by my left leg. I jacked the volume up two, and let it roll. I then faded the speakers to the back ones and cranked it up more. I was not unhappy with the results. Having passed that test, I then moved on to a cd. AC/DC and "Thunderstruck" My favorite foot stomping and head noggin music. I cranked up the volume and bass and once again I was not disappointed as to the sound. I was raised on rear deck speakers and have to admit that the speakers in the doors also provide good sound throughout the car. All in all, I rate these 3 ways as a good buy

Pros: good sound, good quality

Cons: none at this time

Blaupunkt GTx 663 DE

Written By Manny F, Aberdeen on Friday, January 02, 2015

Crutchfield Customer Review (What's this?)

Sounds ok highs and mids sound great not to much

Cons: Not to much bass

Nice sound at a reasonable price

Written By Photoguy1057, Ohio on Thursday, January 01, 2015

Crutchfield Customer Review (What's this?)

Crisp highs and tight bass make these a good buy for the money.

Pros: Good tight bass Accurate bright highs

Difficult Install on '05 Prius

Written By JohnV, Reston, VA on Sunday, June 15, 2014

I bought the Blaupunkt GTx 663 DE speaker to replace the blown out woofer in the driver's side door on my '05 Prius with Navigation and JBL package. The speaker is the correct size, but the screw holes do not line up. The existing speaker had four ears to mount to the existing bracket, the Blaupunkt speaker does not. I'm disappointed with Crutchfield because the web says says this will fit using the existing brackets, but it does not. I will now have to search for an adapter bracket.

Crutchfield response on Monday, June 23, 2014 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

Blaupunkt GTx 663 DE

Written By Trbsami, Indianapolis, IN on Saturday, February 15, 2014

Crutchfield Customer Review (What's this?)

Nice quality, fit well and sound great in my `06 Express van front doors.

Pros: Crisp

Cons: none

Decent speakers

Written By Decent, but not impressive, Lawrenceburg Indiana on Wednesday, February 05, 2014

Crutchfield Customer Review (What's this?)

I bought these speakers to replace the front speakers in my Camry. They are good looking speakers and seem to be well built. The install was pretty easy (about an hour). The only complaint I have is that these speakers distort when turned up above half way when the speakers are rated a lot higher than my head unit is. Other than that they sound pretty good at lower volumes.

Pros: Sturdy, Good looking,good highs

Cons: Distortion, Lows

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