When I got my first car I was obsessed with the idea of having perfect sound quality - as this would impress my mates and give me the ideal listening experience as I drove along each day. I searched around for some speakers as the ones in the car were the originals and had little to no power capability. JBL sound systems have always been respected and often preferred by consumers interested in good sound quality - giving out good bass / treble balance and a crisp, clear sound not achieved by other alternatives.
These JBL 'Grand Touring Series GTO6527S' are an exceptional example of what technology can do for sound quality in vehicles. They are designed to sit on the back shelf, or be imbedded into the interior of doors of any vehicle with space in these areas. Each of the two speakers are exactly 16.7 cm in diamter and tjhis must be considered before purchase so that the area you wish to instal the speakers is definetly large enough. The system adopts a 2-way passive set-up which is 100% wired and therefore requires wires to run the lenghth of the vehicle into the stereo system at the front (if the speakers are fitted into the back shelf of the car/van).
The tehnical performance of the speakers is sensational. The bass can be jolted up to an impressive height, whislt retaining the crisp and clear sound qualtiy consumers are after. matched by a great quality treble level, the balance can be altered massively to suit each user, and this is done through the player system in operation. The type and form of CD player / DVD player, etc which is fitted and connected to the speakers will alter their performance, because the player is the amplifier and its quality matters. Also, the player might offer additonal features to enhance the sound or offer such types of sound as 'movie', or 'radio' formats.
The look of the speakers may matter to some consumers who are bothered about the appearance of their quite possibly 'pimped' vehicle. I like the look, the JBL Grand Tourer's aren't too in your face, but they do adopt the kind of futuristic, metalic image many boy racers wouldn't be ashamed to have on display. Furthermore, the speakers (which have a power output of 55 watts, and a band-width of 60 - 21000 Hz) don't stick out too much and could well be sealed visually from view if the original look of the cars interior doesn't want to be 'spoiled'.
Overall I have been very impressed with the aesthetics and sound performance of the product. It's not too OTT, but the addition of a suitable aplifier these Grand Tourer's can be tooted up, giving a massive high quality sound. Their look many not suit the majority, and I doubt their look does anythingto enhance their performance, but all in all I can live with the boy racer styling. The speakers are easy to install (using a wired set-up) and will stand the test of time, even if pushed to the absolute maximum.
I've always had cars from the age I was allowed to drive, and each one I've always tuned and modified, one of the first points to get upgraded is the sound system.
I like having a good quality sound system but none of this heavy base that loosens all the trim on your car rubbish, just a good quality, capable sound system to give your music the best base to play from without going mad.
On my last car I ran a middle of the market Kenwood head unit with a 6 disk changer, in which I generally have a wide variety of music from pop to dance. I hunted around for a while looking for the right speakers to go with the head unit, so took a trip to the local car stores to have a play and listen to the speakers, and luckily they had my head unit on display so I was able to actually hear how the HU worked with each set of speakers.
After trying many kinds I decided on the JBL GTO6527S speakers at £60.00. The reason I chose these over others out there was just down to the sound quality and lack of distortion. With the base and treble up full and mid to set to 2 the speakers were excellent up to near on max volume, now obviously I knew that the tester boards don't represent how they will sound in a car, but they were the best I tested in my price and size limitations.
Once I got them home I set about installing them, and I have to be honest they were very easy and straight forward with excellent instructions for first timers wanting to do the job themselves.
Set the speakers and level up on the head unit and closed the doors and went for a drive with my favourite CD selected. To say I was impressed is an understatement; the sound quality was so good it felt like the bands were in the back seat playing directly to you. The sound just was so clear and vibrant that you felt the track instead of listening to it.
Overall, for the money the speakers are ideal for anyone looking to fill a 6.5" speaker hole. Obviously a decent head unit is a must to get the full potential of any speaker but these JBL speakers make even my inexpensive Kenwood head unit sound brilliant.
edit: forgot some of the specs for these speakers.
the GTO6527S's are 6" Coaxial speakers rated at 55W RMS with peak power rating of 165W - more pecs bellow
Power Handling, RMS 55 Watts
Power Handling, Peak 165 Watts
Frequency Response (±3dB) 55Hz -- 21kHz
Mounting Depth 1-13/16" (47mm)
Cut-Out Diameter 5-11/16" (145mm)
Impedance 2 Ohms
(above spec list from JBL site)