SPL & SQ / Fabrication

Powerbass xs15dv2 4.834gross volume 3.997net volume 63.375 sq inches of port (3h x 21.125w) 22.854 port lenght tuned to 38hz powered by orion 1200d @ 1ohm Are my calculations correct? If so do you think that is enough port area? 4.834gross 4.459net 42.245 sq inches of port (2h x 21.125w) 15.344 porth lenght tuned to 35hz Which one would you chose?

Figured these could get their own thread, so if anyone else wanted to join in, we'd have a place... Dave, in the center...placating the crowd around the Magnum, as there often is one Teh van in the lane, getting ready for the SQ test and SPL run. How the testing area was set up. Chad's dual Mag D2's...pretty asses Kevin's car getting ready, with the team from NC testing. Dave's doing...something. Beats me. The other Chad's amp rack/battery rack...the drill adds deebeez Motivation for Bucky. He's quiet. The guys from NC with an 18" Solo X And c'mon...a car audio show without the local fuzz showing up is..well, no fun at all Bucky is a menace to society...th…

I am going to my 2nd comp. this weekend---state finals of WV---I will be competing in the Stock SQ class and I am nervous hoping I do well---I think I have tuned my car so much it is starting to sound unnatural---I need to leave well enough alone but if anyone here knows me knows I can't leave anything as is.----sorry I had to rant alittle.

Linked... http://forums.caraudio.com/vb/showthread.php?t=120381 just wanted to spread the word in case you didn't see the pics!!! NG

just as the title says, who all is going, I might be able to make a trip out, not sure though

I want to create my own blueprints for my own boxes. Is there any tutorial of some sort to organize and create my own blueprints? What about a tutorial for BassBox Pro? Thank you.

I wont to bild one of thes http://www.decware.com/whornok.htm for a set of 8's will the RL-i8 work in this tipe of box and what will the sield chamber be it ses to model a regular 4th order single reflex box to determine the rear (sealed) chamber but i dont have the program to do this i know the rli-8 is not out yet but i can wate for it

How much will having a bend in a round port affect tuning & sound? Not talkin like 90's, maybe a 30-45 at most. Is there a way to compensate for it w/ length or something or just trial & error? Bigger port maybe? ie 5" port 30 deg bend compared to 3" port with same bend?

Sooo...got a bit of a rude awakening today. Found out my e12a is actually presenting close to a 10 ohm load to the PG Tantrum 1200.1 in box - impedance rise is killing me. The sub is a 2 ohm DVC currently wired in series, and it's close to 2.5 times what I was thinking the impedance was. Pardon the extreme n00bish question, but is such a drastic rise common? It just feels a little strange running my sub at a lower impedance than my amp is rated for (if I drop it to 1 ohm), but if it models out well, hey...that's what I'll do.

Discuss.

So, it's getting near that time of the year.... I'm trying to figure just how I'm going to make it to finals this year... check out the sights, installs, and meet a few names. What better time then World Finals? So, dBDrag Finals are Oct 7-9 in Cleveland, OH. I'm definately going to be able to make it here, it's only a 3 hour drive for me. Meet shane, tottie, nick, loyd, tom, pete, iggy, and so on. Anyone else going? So, Usaci Finals are in Kansas City, MO Oct 15 & 16th. I'm going to try to make it down there, as I can get flights for ~$250 so far. Meet Matt, Mike, Justin, so on. Anyone else going? -Nick

I have a Tapco J2500 pro amp in my HT (playing an IDMAX 12) and I'm currently running each channel to each voice coil (so that should be about 750wrms to each coil) the signal is mono. The wires I'm using right now are 25ft long and 14 ga. Is this too small of gauge for this power and length My run only needs to be about 15 ft long, Should I 1. Keep the current set up and not worry 2. Cut the 14 gauges to the smallest length possible given the position of my amp and sub 3. Buy larger cable and still run separate wires to each coil 4. Bridge the amp and run the 4ohm coils in series and use make speaker wire so to speak out of 8ga power cable 5. something I haven't thought…

http://forum.soundillusions.net/showthread.php?t=54724 I know I posted this over on CA.com, but just in case you didn't see it... This isn't MECA-sponsored, but should be good to get out (away from the forums, hehe ) and see some people/installs. I had better see some of the B'burg crew out there

I've got some ideas for a speaker project...but need someone local to do the fabrication. Anyone either in NC or VA have the time? Let me know...thanks

I have 4 15's I need to fit in my Altima! Kinda a wierd lineup but I got screamin deals so oh well! I need some advice on how to run everything! I have 2 Phoenix Golds XS2500's and a PPI PC2150. Heres my subs 2 15 inch JL Audio W-6's and 1 15-inchPBX PowerBass XSDv.2 and 1 Power Acoustik 15-inch FUBAR 15W(1000w RMS ones) This is how I was gonna set it up but need help! I was gonna run an XS2500 bridged to 2Ohm to the PBX and FUBAR!(1 to each bridged) than run the PPI to the 2 JL's.... What do you think? I have a cap too a phoenix Gold XSC1o at 1.0 farad but I know I'll have to either get another alternator put in or a Optima Battery! Which should I do? I havent hooked it …

Most of you know that there was another vehicle added to the fleet. 1999 GMC burban. Now the old 97 DUBurban had a massive 8ft^3 enclosure in it and housed 2 Brahma 15's. 4000W amp running them. Well this time its all about saving space and keeping everything stealth. My plan is to flip the spare tire around and glass the inside of the rim. Then i'll glass a mdf enclosure onto that so i can get my needed air space. Right now ive got only 4" of cargo area taken up by the enclosure because its to tall and wide. Sub will be my 12.o.44 sealed running off of my autotek 5600X. Bro will be doing the glassing work since he has the experience. No idea when this will all take place…

ok so the car is a 98 Dodge Stratus. I have to have access to my spare tire and would prefer a removeable enclosure but thats probably not happening. What i have now are two boxes 3/4" MDF 3.13cubes each tuned to 36hz. i want something that'll look more custom and less amateur. I've considered finishing my boxes and what not but its really not worth it to me, i'd rather just toss the boxes (not actually throw away) and start with fiberglass. I'm pretty good with fiberglass but never tried it in cars/audio, i think i can manage though. what i really need from you all is ideas on how to make this look good, i'm wanting front firing subs like they do now, and my amps a…

i'm getting ready to wall of my car @ the b-pillar, w/ a series tuned 6th order bandpass for my 2 15's i'm hoping to be in the 150's w/ this setup. here is the plan for my wall, and a pic of the old setup.....(except i'm running soundstream dbx 15's, not the RL-p's) what do you think???

OK tell me if this looks correct. TD=time delay A=distance in feet from ear 1132ft/sec=speed of sound 1000=ms TD=(A/1132)*1000 Left=2.2ft 1.94ms=(2.2/1132)1000 Right=4.6ft 4.06ms=(4.6/1132)1000 4.06-1.94=2.12 TD Does this look correct? I found this formula on ECA, I am having problems finding other formulas on the topic.

Sup guys I have a few questions, I've seen so many different types of enclouser's for example Round ports Slot ports squared ports port for each side individual chamber Ok for my subs I have 2 12" dvc subs punch my max dimm. are 34 wide x 15.5 height x 17 depth all pieces are cut out already I want to know how ??? should I make my port round, slot ported, port in between the middle. tuned around 32 to 35 hz so that's about it so can someone please lay a hand on me all info would be great thanks to all....

It seems to me like BL (typically measured in Tesla meters) would be a good indicator of motor performance and overall subwoofer ability. With that said, I am supprised that numerous woofers that people commonly call, good strong subs have a fairly low BL in comp to other subs. Subjectively strong subs (by overall consumer babble) Image Dynamics IDMax Bl about 10 Jl Audio W7 series BL about 10 MTX 9500 series BL about 10-20 depending on model SS RL-P BL over 20 So is the SS motor twice as strong as a motor rated at 10TM, or am I completely off base. How do BL and RE interact, it seems that BL would be a constant bc its …

I started to build a new enclosure today. Gross interior is 12.5 X 53.5 X 7.5 bottom and 3.5 top, so 2.5 cubic feet gross. I am recessing the amp and the panel is 22.5 X 13.5 X .75 sunk 1.5 into the enclosure. There are (4) 1 X 2 X 55 and (4) 1 X 2 X 12.5 to account for and the displacement of the sub (RL-P) I think is .18. I want to tune this thing as low as possible (28-32 Hz) so dual 3" ports probably. How long do I make them?

This is it, the last event of the year for Northern Music & Video and the 2nd of 3 stops in the "LOUDEST OF NY" events where the winner will be crowned in Oswego on October 2nd at the last Ultimate Edge show. Here is all of the event info: Northern Music & Video's Thunder in the Park *No SQ will be offered. IdbL only. *Event Location-Colonial Village Fun Park 578 SH 11B Potsdam, NY 13676. *Registration begins at 10am, show begins at NOON! *Registration fee-$15.00. *Offered classes:Stock 1-160, Stock 161-260, Stock 261+, Advanced 1-260NW, Advanced 261-360, Advanced 361+. *1st, 2nd, and 3rd place trophies for all offered classes. *Many giveaways!!!! *Be sure to ge…

im 'this' close to putting my rl-p back into i.b. config-the sound was just to my likeing- but it will mean sealing up the trunk (fold down seats-rear shelf) properly. im thinking fibre glass and mdf and bondo and expanding foam? any sujjestions before i make mistakes?