daimer Posted April 10, 2015 Author Report Share Posted April 10, 2015 I did some testing today with an SPL Lab meter. My round flared port, tuned at 31-32hz performed better than the square wooden port, which is tuned at about 34-35. The wooden port peaked at 39hz and the round port was flat from 34 to 39hz with 0.1-0.2 difference. Best scores with drivers door open:In the kick: On the windshield: Tomorrow I will put my old box to compare the results from this mic with the one from my last competition. I also clamped my amp, getting 1070 watts at 2,4 ohms. I don't know how accurate it is, but I don't care Someday I might test it with an AMM-1. My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
daimer Posted April 29, 2015 Author Report Share Posted April 29, 2015 I decided it's high time I made my door pods. I couldn't easily fit rings directly on the sheet metal, so I went with the easy way. I drilled and scratched the plastic for better contact with the resin - it helped a lot, but I'm sceptical about this whole thing lasting long. After that I glued the rings to the plastic with montage adhesive - just in case something wents wrong with the fiberglass.I then ran speaker cables from the amplifier to the doors, and then a new pair of RCA's. Door pods in place: Am I satisfied? Absolutely. These aren't the best sounding drivers, but they do MUCH better than my stock speakers, especially in midbass performance. I can finally listen to normal music without it sounding like shit. The mids lack midrange, though, so I might replace them with something better in time. I also made a higher tuned port - 40-41hz from wood, like my previous one - again, it did worse than the round flared.. Maybe the box is too large for 40hz++ frequencies. I might shrink the box a bit and see if it works. Other than that, with the round port it plays pretty flat from 33hz to 40hz, always over 143db on the windshield. It peaks at 38 and 39. My best score to date is 144,3 in the kick @38 and 39hz, but this is without the door panels and I tested with my previous box that they gain 0,1-0,3 in different frequencies. My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
khinds94 Posted April 29, 2015 Report Share Posted April 29, 2015 Don't shrink the box you will just lose efficiency. Why can't you make a higher tuned round port? 03 Sable LS AA mayhem 12" D2 Sundown ZV4 12" D1 Tantric HD 12" D2 Tantric SHD 12" D1 Sundown X12 V2 D2 2.5 cu net Sundown 2000d @ 1 ohm XS Power XP2000 Sky High Sound Deadener Sky High wire Stock alt Link to comment Share on other sites More sharing options...
daimer Posted April 29, 2015 Author Report Share Posted April 29, 2015 I don't have a flare mould, that's why :/ This port was flared by a friend of mine, but he's busy all the time and I don't want to disturb him. Maybe someday I'll make one myself My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
daimer Posted April 30, 2015 Author Report Share Posted April 30, 2015 Tested today with the door pods on - looks like peak frequency has shifted. Kick: Windshield: My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
daimer Posted May 27, 2015 Author Report Share Posted May 27, 2015 It's far from perfect, but I like it. My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
daimer Posted May 30, 2015 Author Report Share Posted May 30, 2015 So I added an extra battery in the engine bay, connected it to the alternator and engine for ground, and with 1/0 gauge to my main battery and same for ground on the chassis. Made a few adjustments and tweaks and achieved a new score - 146.2 @ 36hz on the windshield, driver's door opened. It was on the competition today. I was third in my category, first and second place took two guys from Serbia with burp setups. I am VERY pleased with the result. Next step - staining the box with resin! My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
daimer Posted September 27, 2015 Author Report Share Posted September 27, 2015 I think it's time to update the topic.My electrical was sh*t, so I had to buy a new alternator. I found that a 120a alt from a much bigger diesel engine on a different car would fit without much struggle, so I bought one used and changed it's bearings.I also bought a 60ah AGM battery, so I am now using one 60ah AGM and one 44ah lead acid. I know that it's not the best thing to mix different types of batteries, but they won't be staying together for long and I'm driving the car almost every day, so I hope that I won't have any problems. Next thing was deadening. I didn't have enough money for the whole car, so I left the floor with no deadening. I decided to go a bit further on the roof, so I added some metal bracing. I didn't want to ruin my roof completely, so I glued them instead of welding. And I still have to complete the doors with deadener. So that's it for now. I am VERY pleased with the results so far, but there are some things that can be further improved. Voltage stays 13,3+ most of the time, lowest I've seen is 12,9 on idle. The deading improved the sound very much and I haven't even deadened the whole car yet!We'll see what I'll do on my next competition, which is in 2 weeks. My humble build log: http://www.stevemeadedesigns.com/board/topic/192602-corsa-b-daily-build-with-12-ground-zero-new-box-in/ Single Zv4 Rev.2 15" on a 10k amp: http://www.stevemeadedesigns.com/board/topic/201434-my-reviewtest-of-the-zv4-rev2-15/ Link to comment Share on other sites More sharing options...
FourRings Posted October 7, 2015 Report Share Posted October 7, 2015 Hey,nice build.Where in Bulgaria are you from?my wife is from Dobrich and we have a place in Varna but we're in the states now. I'm surprised by what I see there but its rare that I see a real system.Is there any real shops besides Ground Zero? Good luck with the build Robert Link to comment Share on other sites More sharing options...
diegoclass2010 Posted October 7, 2015 Report Share Posted October 7, 2015 awesome build! following for updates ! Link to comment Share on other sites More sharing options...
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