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Car Audio Equipment
Subwoofers
2018 Wrangler JL- Upgrading from JL Audio 8" microsub
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<blockquote data-quote="JeeperVol" data-source="post: 8677569" data-attributes="member: 677088"><p>I'm trying to avoid spending more money on a dsp at this point and I also dont have a good spot to put it. I've played the sub about 15 hrs now and am still having blending challenges. I did what you recommend dialing in front 5.25" hertz components's mid bass using test tones on YouTube and set the high pass at 85hz on the alpine amp snd the slope isnt adjustable and is fixed at 12db. </p><p></p><p>For the jl hd750 powering the rear facing sub, I have the low pass at 75hz and slope at 24db and the sub sounds fairly abrupt and localized. I read that a sealed box naturally has a slope rolloff of 12db, so setting the amp slope to 24 db is actually putting the slope to 36db. Is this true? With the amp on 12 db, the sub sounds more musical but distorted a bit...so I'm going to try turning down the low pass lower to see if that helps. With the sub amp at 12db, do I need to flip the polarity to be in phase? Thanks again!</p><p></p><p>Here are pics of the finished product...It weighs 40lbs and I industrial strength velcro'd it on the bottom and side carpet and anchored it to the back seat mount with a 750 lb rated steel cable and (2) 1/8" eye bolts in the box rated at 300lbs ea. The eye bolts are stronger than they look...should keep it pretty secure. </p><p></p><p>[ATTACH]5915[/ATTACH]</p><p></p><p>[ATTACH]5916[/ATTACH]</p></blockquote><p></p>
[QUOTE="JeeperVol, post: 8677569, member: 677088"] I'm trying to avoid spending more money on a dsp at this point and I also dont have a good spot to put it. I've played the sub about 15 hrs now and am still having blending challenges. I did what you recommend dialing in front 5.25" hertz components's mid bass using test tones on YouTube and set the high pass at 85hz on the alpine amp snd the slope isnt adjustable and is fixed at 12db. For the jl hd750 powering the rear facing sub, I have the low pass at 75hz and slope at 24db and the sub sounds fairly abrupt and localized. I read that a sealed box naturally has a slope rolloff of 12db, so setting the amp slope to 24 db is actually putting the slope to 36db. Is this true? With the amp on 12 db, the sub sounds more musical but distorted a bit...so I'm going to try turning down the low pass lower to see if that helps. With the sub amp at 12db, do I need to flip the polarity to be in phase? Thanks again! Here are pics of the finished product...It weighs 40lbs and I industrial strength velcro'd it on the bottom and side carpet and anchored it to the back seat mount with a 750 lb rated steel cable and (2) 1/8" eye bolts in the box rated at 300lbs ea. The eye bolts are stronger than they look...should keep it pretty secure. [ATTACH]5915._xfImport[/ATTACH] [ATTACH]5916._xfImport[/ATTACH] [/QUOTE]
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2018 Wrangler JL- Upgrading from JL Audio 8" microsub
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