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SC430 Replacement Speakers?

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Old 05-27-07, 12:04 PM
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Dawk1
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Default SC430 Replacement Speakers?

I have a 2002 SC 430 and the lower (6x9) speaker on the right front door sounds like it is blown. It is a Mark Levinson system and I stopped by a local audio shop who informed me that I would not be able to replace the two front door speakers unless I replaced the entire speaker system and Amplifier (they said I could keep the head unit). Is this correct?

The replacement OEM speaker is approx $300 at the dealership (for 1 speaker). I am looking for options but do not want to sacrifice the sound quality. I would appreciate feedback/suggestions/options.
Old 05-27-07, 01:50 PM
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MJHSC400
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Hmmm-- I guess the speaker has a built in microchip transponder that sends a signal via satellite to the Mark Levinson HQ and shuts the whole car down when you change to a non OE speaker--

Pfffwhaaat? Come on--

Here's how you do it--

Pull the good one out and read the back of it-- may tell you what ohm it is-- If it doesn't tell you in writing-- just buy a radio shack multimeter for $10 (mini version works great) and read the resistance of the voice coil-- (place red probe on pos terminal, and black lead on neg terminal-- or vice versa-- doesn't matter) just set the meter to ohms--

There should be separates -- a mid and a tweet in another spot higher on the door somewhere--

Looks like it is a 6x9 midwoofer -- It uses a 3 way setup up front-- so you just need a separate 6x9 with no tweet--

Originally Posted by http://www.familycar.com/RoadTests/LexusSC430/
For you audiophiles who understand these things, the amplifier is a 7-channel 240 watt (continuous average power with all channels driven, at 0.01% THD; 20 -20,000 Hz). There are 9 speakers including: two .75-in. pure titanium tweeters located at the base of the windshield pillars, two 2.5-in. mid-high-range speakers in the doors, two 6x9-in. midwoofers also in the doors, two 4-in. mid-high-range speakers in the rear quarter panels and one 8-in. low-frequency woofer. There is also a 24-bit floating-point DSP processor and top-up/top-down equalization which compensates for higher exterior noise when the top is down.
We really don't know what ohm rating the oe speakers are-- and you want to match that ohm rating -- but here's a start --
These CDT's would in fact be very good and most likely better than stock-- $99 a pair--


Last edited by MJHSC400; 05-27-07 at 02:02 PM.
Old 05-27-07, 06:39 PM
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From more research it seems the 6x9 is an 8ohm model in your car--

The Tang Band 6x9 sub should be a perfect match--

This seller has a pair and I'd go for those-- Although you may want to inquire with him about the neo-motor shallow mount version he has available with a 3" voice coil--

http://cgi.ebay.com/Tang-Band-6x9-Su...QQcmdZViewItem

Old 05-28-07, 01:25 PM
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Thanks for all your help. I have contacted the gentleman regarding the Tang Band speakers and plan to purchase them.
Old 05-28-07, 03:34 PM
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MJHSC400
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I've read that people have had some very good results with them for the odd 6x9 fitment when good tight midbass is needed--
Old 06-07-07, 08:12 PM
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I was told the Tang Band is 4" deep and that the windows won't roll down all the way. Do you know for sure if these will fit
Old 06-08-07, 02:58 PM
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They do look fairly deep, and a baffle may be needed to offset the depth-- which wouldn't be hard to do provided the frontal clearance is there--

I think it could be done-- but without looking at it myself I can't say for sure--

There are other manufacturers that make 6x9 component woofers if it can't be done--

I would really look closely at the frontal clearance b/t the door panel and the face of the woofer to see if there is any room to make a 1" thick 6x9 ring or even 3/4 thick --

A little dremel action may be all that stands in your way of avoiding spending a huge amount of money just to replace one single woofer-- or I guess a pair-- It's pretty likely the TB's will give you a boost in midbass too--

If it can't be done you could always grab a stock replacement from Lexaudio--
Old 06-09-07, 09:23 PM
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I totally overlooked a very good option for you--

You can easily make some 6x9 adapter plates that accept a 6.5 to a 7" mid --

Like these-- but I'd use MDF about 3/8" thick --


Since you've got a sub already it should only improve the sq over a 6x9 anyhow--

These mids come to mind-- 8ohm paper cone JM Lab 6.5's from Zalytron.com

They have a paper cone and a nicer polyglass cone mid as well, and actually the Focal/JM Lab polyglass is a very good deal at $30 each-- they're overstock items I believe--

They'll be found at zalytron.com -- navigate to the JM Lab link on the left side of the main page-- the woofer pictured will be the first on the list--

These are also 89mm deep too, so a good 3/4 ring atop the plate you make or have made should work nicely-- If these don't fit after basically offsetting the m to 2.5" deep, you might find some shallower mids at partsexpress.com --

Either way, if I was in your position I wouldn't dare spend $300 each OR even $300 a pair for the oe replacements-- there are just far better speakers available for much much less money..

These focals would most certainly be worth the trouble of making a plate with an offset ring--

Old 06-09-07, 09:32 PM
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Here's one 3" deep-- $20 each-- A partsexpress.com dayton 7" mid -- 8 ohm-- with a 5 5/8 cutout dia.-- should work nicely on a decently thick plate-- 3/4 would bring it to a mere 2.25 -- but the Focal's are still a little better IMO- these are nonetheless supposed to perform very well for the money spent, and with your system config being a 3way, their passband should be primarily low mids and midbass, which almost any 7" can do very well-- I wouldn't be scared of them-- but I'd certainly try the focal's first-- too cheap not to-- and after you're done, if the focals' don't fit, you can make yourself a nice set of bookshelf speakers or HT satellites-- they'd even make a solid R and L channel in a well designed cabinet--



And here's another option that's 3" deep-- a Vifa 7-- very good quality mids-- but $75 each--


Last edited by MJHSC400; 06-09-07 at 09:35 PM.
Old 06-09-07, 11:38 PM
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ED makes these plates as well--

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