2013 Stereo Install (with Sony!): 2JL 8w7's, HD1200/1, Hertz + Stock Look!
07-23-2017, 03:16 PM
#31
Senior Member
Everything is hooked up. Spent some time today adjusting input sensitivities and gains. I am very impressed with my 2 JL 8w7's. I used to have a Diamond 12" sub with Memphis 1000D amp. These two 8's are comparable (with 500-600 watts each). Except, the bass is a bit smoother. Some people just want the SPL of a jackhammer I guess...but I LOVE the sound of these.
Only minor disappointment are my highs up front. I have hertz 165.3 mille pros in front, and just some hertz 5x7's coaxials in rear. The coaxials, to my surprise, are much brighter than my components. I don't know what the deal is...all four channels are being run off the same amp and with same settings. But so far, I had to turn down gain of rears in order to have more of the sound come from up front.
Tomorrow I am going to cut out the boom mats from the rear door speakers, I think it stifles mid bass. Luckily, I kept all my door panels off just in case. it's possible the door speakers sound better when I put my door panels back on...I know that should make it more air tight and at least improve mid bass response.
Only minor disappointment are my highs up front. I have hertz 165.3 mille pros in front, and just some hertz 5x7's coaxials in rear. The coaxials, to my surprise, are much brighter than my components. I don't know what the deal is...all four channels are being run off the same amp and with same settings. But so far, I had to turn down gain of rears in order to have more of the sound come from up front.
Tomorrow I am going to cut out the boom mats from the rear door speakers, I think it stifles mid bass. Luckily, I kept all my door panels off just in case. it's possible the door speakers sound better when I put my door panels back on...I know that should make it more air tight and at least improve mid bass response.
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optimaprime (07-23-2017)
07-23-2017, 03:33 PM
#32
Junior Member
This could be true. I mean you gotta think to where that speaker is it's very close to you dome. Fading to front is easy problem to fix. Like said I had this problem in my equinox when I had it. Rear speaker was super close to me .
07-23-2017, 06:54 PM
#34
Hmmm make sure your mids aren't crossed up to high. You kinda want everything to over lap just bit so you don't have holes in freqs. You using dedicated dsp or just stuff off hertz passive cross overs and PAC settings. When I do mine the PAC is just gonna sit flat. Running will all be done with helix dsp. Make sure you amp crossovers are doing some kinda multiplying on mids signal.
I'm just using the factory 3 band EQ through the PAC. I'm tempted to get some sort of DSP. I don't need a LOC, I just need maybe an EQ that takes RCA in, RCA out.
07-23-2017, 07:35 PM
#35
Junior Member
No loc needed with PAC unit. But dsp let's you ditch those crappy crossovers and open up those mids and tweets . And with time alignment you can get it all dead on for your seat.
07-25-2017, 07:35 PM
#39
These 8w7's, when powered right, slam pretty hard. Of course, I"m driving them with an HD 1200/1 , which according to many sources is overkill. However, I chatted with someone at JL Audio, and they helped me set the amp correctly and said this setup should be just fine. I had to set the input sensitivity to 38.7 V @ 75% volume (instead of 43) which effectively lowers the 600 watts to 500 watts (maximum rated RMS) per sub.
Also, this box ain't going nowhere. At 80 lbs, and sandwiched between seats and rubber floor mat, there was no reason to bolt anything down. The 18' RCA cables were a bit long I must say, get 15' at most.
I have to say, the 2.5" seat lift is a bit much, but not extreme. I'm nearly 6' tall, and the top of my head begins to hit the roof. If I slouch back ever so slightly, then all good. Given that kids are usually the only humans in my back seat, it's all good for me. I think the same result could be had with a 2" lift kit, rather than 2.5". Of course, they'd have to make them first, which I've not seen yet.
Last edited by Corepuncher; 07-25-2017 at 10:08 PM.