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Civic wall build. Shocker + JBL
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<blockquote data-quote="hispls" data-source="post: 8457167" data-attributes="member: 614752"><p>Numbers are a way off yet, there's still much to do.</p><p></p><p>First of all, we screwed up big time on the small amp. Turns out it's NOT a full range 2 channel but a 2 channel sub amp. Luckily I had a small older Zed 4 channel to get it going, and my bro will use the smaller amp in one of his other cars next year. If anybody knows offhand the model number of the large full range 2 channel JBL/CROWN please LMK!</p><p></p><p>So what needs doing:</p><p></p><p>Tuning is way too high. I added a couple pieces of 2X4 to the back of the baffle by the port to lower tuning but it's still too high so more shrinking of the port is needed to test tunings.</p><p></p><p>Also I think the box is too small for 4 subs. We have enough wood left to build another baffle in the spring so we will test three subs along the bottom and a large slot port top and center. I have high expectations, and it also brings impedance down closer to 4 ohm. As it sits we haven't done any aggressive testing yet and the big amp is only fused at 600A.</p><p></p><p>Next, the shop who was doing some other work to get this car on the road did the alternator swap and did not upgrade the alternator cables. In their defense I really don't think they had any clue what we were going to do. Once he shows it to them they will understand and upgrade that. After that we'll hook up a voltage meter and see how the batteries hold up..... possibly adding more bats or a bigger alternator.</p><p></p><p>PL adhesive is very slow to dry when it's 35 degree days so all our seems are soft. I've got some epoxy resin and fiberglass mat that I want to reinforce the seems in the shell with as well. Sides between the box and wall need to be filled and finished off also.</p><p></p><p>As I said, the doors are a disaster and will need to be totally re-done probably adding more components.</p><p></p><p>After testing the 3 sub baffle we will permanently install whichever works best and flush and finish everything.</p><p></p><p>So after I'm done my maple harvest next spring we'll plan a week to really get this thing up to snuff.</p></blockquote><p></p>
[QUOTE="hispls, post: 8457167, member: 614752"] Numbers are a way off yet, there's still much to do. First of all, we screwed up big time on the small amp. Turns out it's NOT a full range 2 channel but a 2 channel sub amp. Luckily I had a small older Zed 4 channel to get it going, and my bro will use the smaller amp in one of his other cars next year. If anybody knows offhand the model number of the large full range 2 channel JBL/CROWN please LMK! So what needs doing: Tuning is way too high. I added a couple pieces of 2X4 to the back of the baffle by the port to lower tuning but it's still too high so more shrinking of the port is needed to test tunings. Also I think the box is too small for 4 subs. We have enough wood left to build another baffle in the spring so we will test three subs along the bottom and a large slot port top and center. I have high expectations, and it also brings impedance down closer to 4 ohm. As it sits we haven't done any aggressive testing yet and the big amp is only fused at 600A. Next, the shop who was doing some other work to get this car on the road did the alternator swap and did not upgrade the alternator cables. In their defense I really don't think they had any clue what we were going to do. Once he shows it to them they will understand and upgrade that. After that we'll hook up a voltage meter and see how the batteries hold up..... possibly adding more bats or a bigger alternator. PL adhesive is very slow to dry when it's 35 degree days so all our seems are soft. I've got some epoxy resin and fiberglass mat that I want to reinforce the seems in the shell with as well. Sides between the box and wall need to be filled and finished off also. As I said, the doors are a disaster and will need to be totally re-done probably adding more components. After testing the 3 sub baffle we will permanently install whichever works best and flush and finish everything. So after I'm done my maple harvest next spring we'll plan a week to really get this thing up to snuff. [/QUOTE]
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