PDA

View Full Version : MYTH or TRUTH



jaco
03-31-2007, 05:18 PM
i've read toms of post saying that carpeting an enclosure will cause
you to lose a db
and i've read post saying it's not true.
so what's the truth behind this.
is it a MYTH

jaco
03-31-2007, 05:52 PM
anyone

revots
03-31-2007, 05:54 PM
i heard u gain a db by peeing on it.

Eugenics
03-31-2007, 05:56 PM
i do not believe there is any correlation between carpet and volume. unless you're carpeting the inside of the box.

jaco
03-31-2007, 05:56 PM
will i gain 2 db if i poop on it LOL.

but for real i was just wondering if there is any truth to the myth

bk12321
03-31-2007, 06:02 PM
why would that be true

jaco
03-31-2007, 06:07 PM
i don't know like i stated i've herd tons of people over years saying that carped takes away a db

BassAddictJ
03-31-2007, 06:11 PM
i don't know like i stated i've herd tons of people over years saying that carped takes away a db

they're either 17 and dont knwo bettr or the people who convinced them just dont understand physics.......typically, no......unless u carpet 10 layers of the port, maybe yes...otherwise no...........

JoshHd6
03-31-2007, 06:12 PM
i took a **** on mine and gained a db from every turd..

req
03-31-2007, 06:13 PM
depends.

some people have gained decbiles by covering their walls\enclosures with duct tape, or even epoxy and sanding to make it smooth. others had no effect. carpet can dampen sound waves so i can see how it might effect this, but if you are talking about a daily driver, you wont notice it eaither way.

this is like 1\10 of a decible stuff.

i can tell by the question that you have no idea, so dont concern yourself, carpet it if you want to you will not notice anything besides cosmetics.

jaco
03-31-2007, 06:13 PM
i didn't think so, but i had to ask the pros

JoshHd6
03-31-2007, 06:14 PM
noway u did a 152 with that amp..and those subs..lol

jaco
03-31-2007, 06:14 PM
looks like a job for
adam and jamie
on myth busters

jaco
03-31-2007, 06:17 PM
noway u did a 152 with that amp..and those subs..lol

it's a CRX and a fart box.
we're trying to go up to 155
building a box tuned to 45hz
but i keep blowing the cvr's

shallowfu
04-01-2007, 10:23 AM
If you are driving daily in a car with full int. i don't think it would matter.Maybe if the car was stripped with nothing in it or a wall,it might hurt?I say call myth busters!:)

quakerroatmeal
04-01-2007, 10:26 AM
I've heard carpet absorbs sound-waves?

PV Audio
04-01-2007, 10:43 AM
Four comp vr 10s, doing a 155? We're going to need more details. What mic is all of this on? I only question because you're asking a question like this, but yet it seems natural that you're in the mid 150s. Quite difficult.

jaco
04-02-2007, 02:38 AM
not 155 yet 152.6 best so far 5.5 cubes @ 38 Hz 84 square inches of port.
that was on dash pass. side with driver window down. on a 40hz to 60hz sweep.

build ing another enclosure tuned @ 42 hz or 45 hz to see if i can get a 155.
i just do local comps and drive the car a few times a week.
but trying to keep it with in rules for MECA street rules.

blackbonnie
04-02-2007, 02:47 AM
looks like a job for
adam and jamie
on myth busters

great show

Ctminime
04-02-2007, 02:52 AM
see all that he has to do is carpet... maybe lose one DB but then.... (and this is the crazy part) thrown an audiobahn sticker on his car an no only make up for the DB he lost on the carpet but also gain 2 extra!!!! its the 3 DB audiobahn law.... u can gain another six DB if u have ure CVRs baskets chromed.... haha

KARLEON
04-02-2007, 07:34 AM
only way to truthfully find out is to get a meter and test your own stuff. I mean, i doubt if you loose a whole db...but possible partial of a db....
Assuming from your post, you dont compete. I say that because if you did, you would of did your own testing before asking. And if you do loose a db or a little less than a db, i highly doubt your ears could tell.

KARLEON
04-02-2007, 07:38 AM
i retract my statment about you competing. I just read the 1st page and went ahead and responded to your answer. Well since you do compete, just meter your system with carpet and without carpet. See which one is louder and run with it.

PV Audio
04-02-2007, 08:36 AM
not 155 yet 152.6 best so far 5.5 cubes @ 38 Hz 84 square inches of port.
that was on dash pass. side with driver window down. on a 40hz to 60hz sweep.

build ing another enclosure tuned @ 42 hz or 45 hz to see if i can get a 155.
i just do local comps and drive the car a few times a week.
but trying to keep it with in rules for MECA street rules.No, what mic is this on. I don't think you realize how incredible a 155 score is, let alone with entry model speakers.

AudioAnonymous
04-02-2007, 08:44 AM
His 152.6 could be in the kick panel which is usually a 3-7 db difference from the windshield in those cars.

To gain I would raise the tuning of your box up. Shrink the size a little bit.

luvinthebass
04-02-2007, 08:48 AM
I've heard carpet absorbs sound-waves?

yeah, i think the carpet and seats of the vehicle do absorb the sound waves, i know they do in my car or you'd hear the bass as loud as it is in the car on the outside and it isn't it's quieter. so it does absorb it.


His 152.6 could be in the kick panel which is usually a 3-7 db difference from the windshield in those cars.

To gain I would raise the tuning of your box up. Shrink the size a little bit.

heh i used my walmart boom meter and hadit rest on my center console it read 130.1 db's then i placedit on the dash near the windshield and it read 135.5 db's, kickpanel same thing

MikeyB
04-02-2007, 11:53 PM
it's a CRX and a fart box.
we're trying to go up to 155
building a box tuned to 45hz
but i keep blowing the cvr's

maybe in the port :suicide:

Symon_say
04-03-2007, 07:26 PM
True i gain 2 dB covering my box with toilet paper. :p

jeremiah
04-03-2007, 07:51 PM
they're either 17 and dont knwo bettr or the people who convinced them just dont understand physics.......typically, no......unless u carpet 10 layers of the port, maybe yes...otherwise no...........

hea im 17 you a$$

Crown_amps
04-03-2007, 07:53 PM
i don't know like i stated i've herd tons of people over years saying that carped takes away a db

run away from them when they say that its not possible by any means well mabye if you carpet over the port lmao:naughty:

ThatChevyGuy
04-03-2007, 07:57 PM
i did a 146 with three re series 12''s on a memphis 1000 in a TRUNK car. I think the high tuning helped. I got loudest of the nite, and i had the littlest money into my system. And crx's are LOUD.

myjaja
04-03-2007, 08:05 PM
No, that's not true. But if your windshield flexes, then you lose dbs.