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any spl competitors?

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any spl competitors?

Postby feel » Sun Jun 06, 2010 2:23 am

couple questions? what frequency does your crx peak at, what year, and what did you deaden? any tips? i compete locally but never with a crx and plan to do so very soon.
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Re: any spl competitors?

Postby Honkyracer1 » Sun Jun 06, 2010 8:59 am

hi :-)


when i used to compete with the 1000 watt class i was bucking 146.6, about 68 herts is where i was sitting, you want the higher herts thats where your sound pressure will advance in, and you will need ammounts of power if you use bigger subs.... if you got a some what decent ammount of power i advise using entry lvl, what do you plant to use for your set-up or you going to start fresh?


also i went to my local menards and bought sound dended from their metal roofing section its like 90 dollars for a super huge roll of the stuff and it worked out great, thats when my frequency changed everything. but it matted everything i could reach and find in my rex includeing inside the plastic under the head liner, everything i could find man.


major key for spl : everything is in the design inside of the box.

i also recently just built a box for 8 12's cerwin vega vmax's to do hair tricks it hitting like 15 herts just to do hair tricks but its bad ass :D
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Re: any spl competitors?

Postby Honkyracer1 » Sun Jun 06, 2010 9:05 am

Image


Image
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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Re: any spl competitors?

Postby feel » Mon Jun 07, 2010 1:27 am

thanks, so you were at 68 with your rex? i farted 148's with a single fi btl 12 in my matrix. power wise, i was using 2 rockford fosgate t20001bd's. i should actually post some of my boxes on here. i'm a local builder as well as a mod on a sound forum. the rex is already deadened, so i'm not worried about that. i was just wondering what some guys with experience with a crx were doing.

so those vmax's are playing 15hz tones? what does it hit? with that much cone area, you should be able to pull off a hair trick without getting that low.
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Re: any spl competitors?

Postby Honkyracer1 » Mon Jun 07, 2010 10:17 am

lol. 147 but it hurts. that was with both doors opened up in a 97 2 door blazer
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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Re: any spl competitors?

Postby Honkyracer1 » Mon Jun 07, 2010 10:21 am

your biggest problem you're going to run into, if you're going into non street beat you're gunna get ate alive... power wattage classes are different you can bascily use as many subs as you want but you gotta keep to that wrms power rate. personally i'd clamp your self and see where you're sitting on both amps man, because if you go to the 4k class bend over.... lol.


street beat you would of been ate too people are crazy in that class 2 10s hitting 155s n stuff. what is your box designed at what hert?
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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Re: any spl competitors?

Postby stokxn » Mon Jun 07, 2010 6:48 pm

feel wrote:couple questions? what frequency does your crx peak at, what year, and what did you deaden? any tips? i compete locally but never with a crx and plan to do so very soon.


My crx peaked at 40 hz on a sweep. hit a 143.7 with one DD 3512 on a DD M2@ 1700 wts. rms. many gasps from the crowd.. :D
fully Dynamated w/sub firing up, tuned @ 38hz
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1990 si --Y49 stock
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Re: any spl competitors?

Postby ddeitz » Mon Jun 07, 2010 10:47 pm

What type of deadener and how much you can use is going to also play a huge part. Since mines for DB Drag I can only use 4mm, so its Vibraflex for my little rex, she's got expensive tastes apparently. have yet to cover every nook but getting closer and closer. See how the testing goes but looking like perhaps street A (2 10's) off a Soundigital 16k

8 12's in the hatch would be so much fun..
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Re: any spl competitors?

Postby feel » Tue Jun 08, 2010 12:37 am

for us, we run our comps off cone area and power is unlimited. we don't have enough competitors to separate walls, unlimited, street a etc. deadening is whatever so i can go up against someone who has a mdf roof and a wall as long as the cone area is the same. in the end, i'm thinking 2 10 as well.

http://www.youtube.com/watch?v=6-pxs09ogtw this is my daily, or should i say was. i have a different box now.
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Re: any spl competitors?

Postby Honkyracer1 » Tue Jun 08, 2010 11:23 am

what comp are you going to run with..


usaci, db drag, or midwest spl.
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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Re: any spl competitors?

Postby feel » Tue Jun 08, 2010 10:33 pm

we modified ours in hawaii. everything is unlimited except for cone area, which separates the classes. termlab, car sealed, sensor on the windshield.
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Re: any spl competitors?

Postby Honkyracer1 » Wed Jun 09, 2010 9:21 am

odd, never seen it done like that, so what kinda of class is it


4 8's
2 10's
1 12?

and unlimmited power?
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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RIP - 90 CRX HF Turbo....
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Re: any spl competitors?

Postby feel » Sat Jun 12, 2010 5:28 am

like this:
Class A 1-101 sq. inches
Class B 102-160 sq. inches
Class C 161-260 sq. inches
Class D 261-354 sq. inches
Class E 355+ sq. inches

that's the cone area breakdown and power is unlimited. a lot of guys use their daily setups and some just go all out and fart. it's all in fun down here and we're all pretty tight knit.
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Re: any spl competitors?

Postby nimda » Thu Jun 17, 2010 10:33 pm

lol,
1 power acoustic 12"
1 hifonics amp runnin 4 ohm, 311 watts
One burp at 58hz
143's legal, at show
144.7 best on the meter at home

total cost $142
being 8th in the country in my class while running just over 1/2 the power of my compititors...... priceless....

MWSPL, basic 1,
2 - 10's or 1 - 12" 500 watts max clamped power

I still tinker, but now I am more worried about the "car" than the stereo...
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Re: any spl competitors?

Postby feel » Sun Jul 25, 2010 8:48 pm

Image
Image
Image
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Re: any spl competitors?

Postby BlackIce » Fri Aug 27, 2010 5:29 pm

Back in 2006 I built a friends CRX (89 Si, no sunroof.. this was in Australia, sunroof was optional).
We had one Odyssey 2150 battery, 8 runs of 0g (4x for +ve, 4x for -ve). 2x DD 9512, one DD Z1 amp. I think the box was 2.5 cubic foot, with a single 10" port. It peaked around 54hz (maybe 53).

dB Drag Street B style (engine off) it posted 151.8dB with one Z1.
We added a second Z1 and it posted 152.7dB.

Image

http://www.termpro.com/asp/competitorst ... 7&Method=6
JDM '88 Si + ZC + Cyber Roof :)
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Re: any spl competitors?

Postby Honkyracer1 » Sat Aug 28, 2010 10:07 am

how did your snorkle that port i've been trying for a while.

heat gun, torch. i havent figured it out.


tips =
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
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RIP - 90 CRX HF Turbo....
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Re: any spl competitors?

Postby SWAT_CRX » Mon Aug 30, 2010 12:11 pm

Well ive used my Crx for spl for the last 5 years, I know just about every trick ya wanna know to make that thing loud lol. Ive used a variety of different setups too. 1 12 2 12 3 12s, 6 tens 8 tens 10 tens 12 tens. With one 12 and one mmats 3500 i was doing a 156.5 in the Kick USACi style 153.2 on the dash legal. The pic you posted of your sub forward aero back is the box i used for that, It all varies as far a frequency though also....For USACi in the kick i thought my note was 68 for the longest time until i decided to test a lower note, then i found 62-64 was about 1db louder. So when your testing do a mid volume sweep then start testing every note from 56-72 at a higher volume(not Full Tilt), otherwise youll get a false reading of what note your actually loudest at. As far as deadening they are all different, except in 3 spots i can tell you, you can gain close to 2 db. Seal every hole in the doors that is worth .4 db, seal the speaker hole .3 db, drop your heater/AC fan housing so you can see the top of the fire wall and you will see a 3in X 4in wide hole that is worth .7-.8 by sealing it with hush mat. also if you make some Panels to go behind the radio down at the bottom by your ECU theres a hole that goes driver side to pass side, block those off is also worth .4 db
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Re: any spl competitors?

Postby BlackIce » Mon Aug 30, 2010 1:10 pm

Honkyracer1 wrote:how did your snorkle that port i've been trying for a while.

heat gun, torch. i havent figured it out.


tips =

Tutorial with pix here: http://decibelcar.com/index.php/menudiy/51-aeros.html

We did that storm pipe (7mm thick walls) with a big wok ;). Two guys pusing the pipe down and one heating the end. The secrets to get even pressure distribution and heat.

I did a pair of 4" ports last week from polypipe. You know the black storm water pipe ? Its got like 5mm thick walls ! Takes a very long time to get those done, I'd recommend you stick to PVC instead, it flares a lot easier (thinner) and you dont loose any real strength.
JDM '88 Si + ZC + Cyber Roof :)
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Re: any spl competitors?

Postby BlackIce » Mon Aug 30, 2010 1:15 pm

SWAT_CRX wrote:also if you make some Panels to go behind the radio down at the bottom by your ECU theres a hole that goes driver side to pass side, block those off is also worth .4 db

Hrmmm, never heard this one before, I'll try it out ;)
JDM '88 Si + ZC + Cyber Roof :)
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Re: any spl competitors?

Postby Honkyracer1 » Mon Aug 30, 2010 1:21 pm

i've got like a 6 foot tube of pvc lol. for 10" and i've got a 6 foot of 8" as well.

all sewer pipe.
93 Del Sol Si, DoHc ZC Swapped, HX35, Vitara Eagle bottem, RC1000's and more to come~!
-----------------
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Re: any spl competitors?

Postby SWAT_CRX » Mon Aug 30, 2010 10:30 pm

BlackIce wrote:
SWAT_CRX wrote:also if you make some Panels to go behind the radio down at the bottom by your ECU theres a hole that goes driver side to pass side, block those off is also worth .4 db

Hrmmm, never heard this one before, I'll try it out ;)



Do you have to Cowl done up above your blower motor? that one there is a really good gain for sure i can probably show you where i am talking about right now actually ill go take a pic 2night since it is tore out at the moment!
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Re: any spl competitors?

Postby feel » Tue Aug 31, 2010 2:56 am

thanks man, never thought about the fresh air vent. can a pic of what you're talking about above and how you did the one behind the radio. if you don't want to post it on here i understand.
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Re: any spl competitors?

Postby BlackIce » Tue Aug 31, 2010 3:53 pm

SWAT_CRX wrote:Do you have to Cowl done up above your blower motor? that one there is a really good gain for sure i can probably show you where i am talking about right now actually ill go take a pic 2night since it is tore out at the moment!


No I havent done in there. If you could provide pix that would be pretty awesome :D
JDM '88 Si + ZC + Cyber Roof :)
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Re: any spl competitors?

Postby BlackIce » Thu Sep 02, 2010 12:09 pm

*cough* waiting impatiently :P
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