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Old 30th April 2012, 05:39 PM   #1
febulo is offline febulo  United Kingdom
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Join Date: Apr 2012
Default thinking to buy a set of JBL

hi
please advice on this set of JBL speakers and amp
  • JBL GTO5355 6-channel amplifier (4x55W RMS + 225W RMS for sub)
  • JBL GT5-12 12" 1100W subwoofers
  • JBL GTO938 300W 6x9 speakers
  • JBL GTO6508c 16.5cm components
is that good on sound quality??

thanks
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Old 1st May 2012, 06:34 AM   #2
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Location: Louisiana
At the very least, you should go listen to the 6x9s and the components. They'll vary in sound quality more than any of the other components you listed.
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Old 17th May 2012, 04:32 PM   #3
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Did you buy this yet?

IMO ditch the 6x9s and spend some more on the front speakers and/or deadening material for the front doors.

What car is it for?
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Old 22nd May 2012, 07:02 AM   #4
febulo is offline febulo  United Kingdom
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Join Date: Apr 2012
not yet, BMW 1er F20 i am still waiting for my car.
This set of JBL is not expensive only GBP300, but one thing i do concern is the speaker wont fit into original speaker place and it will make lot of holes to fit the speaker in.
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Old 22nd May 2012, 01:00 PM   #5
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Right, in that case you're set to fail!

Pretty much all of the BMW range run a "3-WAY" front stage:
Tweeters in the a-pillar/window corner (depending on option box ticked)
4"/10cm mids in the doors (only thing you'll defo get!)
1 or two 6.5" midbass under the front seat (depending on option box ticked)

And either a pair of 4" or pair of 4" +tweeters for the rear.

To up-grade the system I have seen some half assed efforts with kits cobbled together from 4" comps that fit and the Earthquake SW8 subwoofers under the seats, but I would recommend these Jehnert kits: Produkte Doorboards Soundsysteme | Bmw | 1er | Bmw 1er E81e82e88 Cabrio Coupe 3 Turer 9 15100 %C2%BBflat Line%C2%AB Woofer System | Jehnert Sound Design Automotive they're 595.00 for the kit and you can run them passively off a big amp, Quasi active off a 4ch or fully active.

I've sold car audio for 13years, I've been fitting Jehnert set ups for around 10 of those-everyone who has had one has loved them. They can, and do, go into a lot more depth when designing the system for the car-the vehicle's acoustics are taken into acount when choosing drivers and crossover points/slopes etc.

The Earthquake alternatives will cost you a little less but aren't a good choice: the SWS8 is a subwoofer, not a midbass, so it will give good bass but will crossover poorly with your mids. Mids wise there isn't lots of room so the Focal 100VRs are the common choice-they're 250, the SWS8s are 145 each, so you're looking at 540.00 and have a system that is harder to install as you have to make your own brackets and harder to set up as the equipment isn't matched.

Get the Jehnerts, a big 2ch and a sub/amp for the lowest octave and you're hot to trot. Otherwise if you're after better SQ invest in a processor and a 6ch amp and go active with the front end, will give better stage and imaging-at the cost of a more difficult install and more parts cost.

Last edited by TheBaronGroog; 22nd May 2012 at 01:04 PM.
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