quote:Originally posted by kryptonitewhite??: I'm not so sure about driving screws strait into the sheetmetal, nor will I use any 2x6 or 2x4... but here's something a bit off course
Krypt, that was a build I was doing in my Yugo a couple of years ago. Funny, I got that far then ripped it out and started over using concrete. I completed the entire box (all but the baffle) but became discouraged because me and a mechanic friend of mine couldn't get it to run. I scrapped the car last summer for $100 bucks, lol.
ya, I read that on the forum stole your thread from... I was saddenmed, because the EXACT same thing happened to me. All this wood I'm using and this equipment was for a 96' Hyundai Accent GT I put countless hours into, but even after replacing a $95 water pump, $35 timing belt, $9 thermostat... a 50 cent frost plug forced me to GIVE the car away. I don't have a cherry picker to pull the motor to get the engine off the firewall to pund it in
-------------------- Dave, ya gonna slap Steve too?
posted
so I couldn't wait anymore, I decided to use the wood I have to build a quick box to get us through so we could take our time and do the final box as good as we can. so we re-took some measurements so we could build as big as we could outside and slide it in. I didn't calculate anything, just got the max dimensions and made the port go all the way back less 1 port diameter.... I just did it and what a trip, it's right where we were aiming for anyway... we might just keep this box as is unless we do get a 22".... I put the port close to the sub to get more wall clearance, making this box obsolete for a 22"...cuz it is ... was... just a temp sloppy box to get by... well check this, I was aiming for >20 cubes and 15Hz tuning.... and now that I sat down, we have 22 cubes @ 15Hz with a 20" port length. What are the freakin odds?!
I'm keepin it as is. Now the big debate may as well start now, so after I post these pics here ( camera died, I have to go out and take more pics now that we're home... box basically complete in-car....)
After this post I'll post my plans I made 2 weeks ago... showing we are on target as is
taking out factory
considering leaving factory in and putting CD deck in center console
looks good
the driver side power window has been intermitten... switch is going bad... decided to pull the door apart too to replace switch and see what we're working with to put 2 Extremis 6.4's in each door... fiberglass/bondo
-------------------- Dave, ya gonna slap Steve too?
I have t-nuts and #10 security screws that do not fit into the mounting flange holes on the sub!!!!
OK, debate on.
I know, I know... "why tune below 25-27Hz in car?!" Music rarely has information below 30Hz... why tune below 33Hz!!! Car's cabin gain can be as much as 12dB/oct from 60Hz on down.... yadda yadda.
For those of you that will NOT be able to just deal with it, please PLEASE just pretend it is 22 cubes SEALED for an IB sub! PLEASE! ( I know you won't but at least I asked) Since you know so much, then you know that all vented cabinets act as a sealed enclosure above the range where the port helps. So me tuning at 15Hz, IF the port is never used cuz my music doesn't go that low, I would be more than happy with this sub in a sealed cabinet of it's size, especially after cabin gain. (not really, but I'm tired of this argument)
I have done this before. The 4th order bandpass design you see in my avatar (some of your forums require too much effort to add a custom avatar, I will include a pic) is with an F3 of 20Hz and an S factor of .7 I designed it from Shavono.com before I learned how to use Bass Box Pro 6 and WinISD Pro. My POS Lanzar amp bottomed the sub before I got to even seal the lid... it's advertised shut off mute did not work after testing.... so the former smashed on the top plate and the coil unwound. I had to cut it open and it became a vented cabinet of 5.1 cubic feet tuned to 19Hz. I had an S15L7 in 3.5 cubes @ 27Hz. I have been there, i have done that, I have heard good setups tuned to 33Hz and 27Hz, deal with it!
-------------------- Dave, ya gonna slap Steve too?
posted
hey krypt nice build pics....i bought my car new and was at the dealer with a tape i needed at least 25 \cubes and the xterra was strong enough to carry the weight, for me it was a good choice at the time, now i wish i would have bought the jeep instead because of the floor line, but i will make the xterra work for my needs. Next car will be a jeep though. you should have seen my neighbors faces when i was out there stripping all the seats and inerior out, that was really funny.....the same day i was in there with a plasma cutter cutting out the floor to fit the steel, it took me a month off of work to finish the inside but it was worth every penny i didnt make that month. Dude dont listen to the haters in here they are a dime a dozen, and dont matter one iota.....do what you like and screw them!!!! as for buying a new car to make an spl monster out of YOU THE MAN!!!!! and i have gone over 50,000 miles with my xterra and not a mechanical breakdown, it is a nice feeling being able to drive to a show and not worry about some 100 dollar hoopty making it home.....keep up the good work brother and ill see ya in the lanes.....unlike most of the posters in here.....
-------------------- 12 VOLTS BABY!!!!! TEAM STETSOM USA & SALES REP TEAM STINGER BUY OHIO GENERATORS WORLD FINALS COMPETITOR 2005,2006,2008,2009 SUPER STREET 1-2 CERTIFIED 161.0 DB MARYLANDS LOUDEST DAILY DRIVER N.S.P.L. STATE RECORD HOLDER 2005,2006,2007,2008,2009 TEAM USAudio Stetsom Sales and Service stetsomrep1@hotmail.com Posts: 2226 | From: Maryland | Registered: Oct 2005
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-------------------- 95 GMC SAFARI [ASTRO]4 MMATS JUGGS 15'S 4 MMATS D3000.1 24 CUBES 240 SQUARE INCH OF PORT @35 HZ 155+ TL ON THE DASH IN A STREET SETUP Good judgment comes from experience, and often experience comes from bad judgment. Rita Mae Brown Posts: 103 | From: British Virgin Islands | Registered: Sep 2008
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quote:Originally posted by kraven moorehead: hey krypt nice build pics....i bought my car new and was at the dealer with a tape i needed at least 25 \cubes and the xterra was strong enough to carry the weight, for me it was a good choice at the time, now i wish i would have bought the jeep instead because of the floor line, but i will make the xterra work for my needs. Next car will be a jeep though. you should have seen my neighbors faces when i was out there stripping all the seats and inerior out, that was really funny.....the same day i was in there with a plasma cutter cutting out the floor to fit the steel, it took me a month off of work to finish the inside but it was worth every penny i didnt make that month. Dude dont listen to the haters in here they are a dime a dozen, and dont matter one iota.....do what you like and screw them!!!! as for buying a new car to make an spl monster out of YOU THE MAN!!!!! and i have gone over 50,000 miles with my xterra and not a mechanical breakdown, it is a nice feeling being able to drive to a show and not worry about some 100 dollar hoopty making it home.....keep up the good work brother and ill see ya in the lanes.....unlike most of the posters in here.....
scoot me off some pic links! Plasma cutter... now that IS crazy! glad your hapily dedicated, I hate when people are good at this stuff but theyre affraid to get too extreme. Like home theater guys that aren't willing to sacrifice room in a HOUSE gor a box smaller than the one in my HATCH lol
-------------------- Dave, ya gonna slap Steve too?
quote:Originally posted by screechie: Good thread more, more.
sure thing!
did a few layers of spraypaint today, will put some stuff from a can on for the final coat(s) got a red top under the hood, had to get a top post clamp because the car terminal ring plus the power wire ring were too thick and kept stripping out.
-------------------- Dave, ya gonna slap Steve too?
This was a few weeks ago with 18.5 cubes @ 17Hz. We just happened to get where we actually wanted to be with our "temporary" sloppy box. 22 cubes 15Hz.
-------------------- Dave, ya gonna slap Steve too?
posted
look under the european dbdrag part under xterra for spl thread. the build pics are scattered around the house i will have to load them up and show the whole build.....could take months to gather....hahaha
-------------------- 12 VOLTS BABY!!!!! TEAM STETSOM USA & SALES REP TEAM STINGER BUY OHIO GENERATORS WORLD FINALS COMPETITOR 2005,2006,2008,2009 SUPER STREET 1-2 CERTIFIED 161.0 DB MARYLANDS LOUDEST DAILY DRIVER N.S.P.L. STATE RECORD HOLDER 2005,2006,2007,2008,2009 TEAM USAudio Stetsom Sales and Service stetsomrep1@hotmail.com Posts: 2226 | From: Maryland | Registered: Oct 2005
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posted
My enclosure is 21 cubic feet after sub/port displacement, tuned to 15.42Hz. The port is a 7.75" sonotube 19.5" long, leaving 8.25" port clearance at the back.
external 42" wide = 40.5" wide internally front 38 tall, rear 32 tall = 36.5" + 30.5"= 33.5" average height bottom depth 30.5" top 28" = 29 + 26.5 = 27.75" average depth
40.5 x 33.5 x 27.75 = 21.788 cubs before sub/port displacement
7.75" x 19.5" = .532 cubes port displacement + .22 sub displacement = .752 total disp
WinISD with 21 cubes with 7.75 x 19.5 says 15.42Hz tune, and I round under, so close to 15Hz.
So here is my problem. Bass I Love You has a 16Hz tone. I had more excursion at the 16Hz tone than I did on the 30Hz and 25Hz tones. Please excuse the very poor quality of this video, turn your speakers down!
also note, very little port velocity. that 2 liter bottle barrely moves, and not much air blew through without the bottle in it either.
Now here is sub_junkie's vid. He is 7.6 cubic feet tuned to 15Hz as well. IDK where his SSF is set to, but mine was at 15Hz. You can turn it back up for his vid.
his excursion is just the opposite: more excursion on the 25Hz and 30Hz, very little on the 16Hz, as it should be, correct?
Here is another video of mine with a much better camera just to get a better view and listen of things. Please bear with me, it's a rap song, but the bottom note on this track is 26Hz I believe. Willie The Kid : Love For Money
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