Replacing OEM Subwoofer ES350
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Driver School Candidate
Joined: Jan 2014
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From: Nebraska
Replacing OEM Subwoofer ES350
I need to replace my OEM stock 8" subwoofer in my 2007 Lexus ES350. I am looking at a Polk Audio db840 8-Inch Single Voice Coil Subwoofer with 4ohms. Would that work for my system? Looks like the factory sub is 2.5 dual ohms. Does that mean 5 ohms total? Thanks!
Lead Lap
Joined: Jan 2007
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From: MS
I'll agree that it was probably wired in parallel.
What is your goal in replacing the OEM sub? Is the old one broken? Then get a factory replacement. I've seen them on Ebay. More bass? Just picking a sub at random to drop in there may not provide as much bass as the factory model. Or even worse, a very bad frequency response in the bass region. You need to know details like the Qts and sensitivity of the factory model so you can plot the response of both (OEM and replacement) subs in some simulation software.
What is your goal in replacing the OEM sub? Is the old one broken? Then get a factory replacement. I've seen them on Ebay. More bass? Just picking a sub at random to drop in there may not provide as much bass as the factory model. Or even worse, a very bad frequency response in the bass region. You need to know details like the Qts and sensitivity of the factory model so you can plot the response of both (OEM and replacement) subs in some simulation software.
Thread Starter
Driver School Candidate
Joined: Jan 2014
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From: Nebraska
I believe the sub is blown & the cone is split. Anyone know the part number or where I can get a factory replacement? I totally agree in keeping with the factory replacement, then I can be sure it will sound good 
Pole Position
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Lead Lap
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From: MS
Some speakers labeled as "free air" have a Qts in the .600 to .800 range while other car subs have a Qts higher than 1.000 which would work better in free air applications. I've used subs with a Qts as low as .500 in free air. You can go lower as long as you have extra excursion to spare but the bass may bet a little boomy.
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Pit Crew
Joined: Mar 2013
Posts: 207
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From: Ont, Canada
Has anyone successfully reinforced (or insulated) the rear upper deck in the ES 350 to prevent rattling from the stock subwoofer?
I think it has enough bass for my needs, just got to get rid of the damn rattles.
Thanks!
I think it has enough bass for my needs, just got to get rid of the damn rattles.
Thanks!
Last edited by iceblast; Aug 12, 2014 at 08:23 PM.
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