SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Additional JL Subwoofer Custom Install + JL Amp + JL Tweeters

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Old 05-26-2021, 06:57 AM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Additional JL Subwoofer Custom Install + JL Amp + JL Tweeters


With the limited space in the Mercedes R230 SL I show you how you can keep the maximum space but still add huge bass to your car with the huge 13" JL 13TW 5.3 Shallow mount sub. I explain how the sub produces different bass in different parts of the car and my preference on where best to place it. The video shows how to make the perfect size box of 0.8ft³ or 22L that is needed for the huge JL 13TW 5.3 Shallow mount subwoofer, fully carpeted and installed. I also show how to connect to the existing wiring for the sub and where to mount the amplifier. Lastly a quick look at some JL Tweeters I installed too to lift the treble in the front and how to connect them. Items in video: 13" JL 13TW 5.3 Shallow mount sub. Custom home made sub box: 0.8ft³ 15mm MDF wood, PVA Glue and wood screws (pre-drill holes).

Subwoofer Box:
Front face 635mm x 365mm chamfered corners 130mm sides (100mm if assembly inside front and back face)
Subwoofer speaker box grey felt cloth + spray adhesive.

JL tweeters C1-075CT - C1 0.75" Component Tweeter Pair with Crossovers 150W.
JL Audio RBC-1 Remote Control Bass Level Controller for JL Slash v2 Series Amps.
JL Audio JX1000.1 D JL Audio JX1000/1 Class D 1000W Monoblock Car Amp Amplifier.

Last edited by A1EK; 05-26-2021 at 07:01 AM.
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Frederick NL (05-27-2021)
Old 05-27-2021, 12:14 AM
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2005 SL500, 2015 CLS400
Kudos to you, man! Great project, I bet the sound quality pays off the bill
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A1EK (05-27-2021)
Old 06-22-2021, 08:50 AM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
So UPDATE.... !

As well as my JL 13tw5 V1 Shallow Sub in the trunk, I just bought W3V3 MicroSub 8" 500W Twin to fit behind my seats as I found with the roof down, the bass dropped.
I now have a predicament as the W3V3 is unbelievably good, better than the 13tw 5, it hits so hard, deep and strong, that I feel its all I need, I am in danger of saying I have too much bass !

Has anyone got experience on these two subs and which they feel they would keep?


Last edited by A1EK; 06-22-2021 at 08:59 AM.
Old 06-24-2021, 12:33 AM
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2005 R 230 SL350 (M112 3.7). Sold the 1966 W113 230SL recently
As long as it doesn’t cause the roll bar to flip up during ‘in the air tonight’ you should be okay.

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