Just got metered

[ZEUSGT 10+ year member]

Honestly, I couldn't tell you how it was higher if the meter only went to 120.. All I do know is... There was a dial and a digital display at the bottom. The dial went as high as 120 and as low as 50, but the display was reading between 120 and bouncing off of 125...

I know you can't see it in the video, but the visor was shaking and the headliner was shaking pretty good too... usually when it hits hard the cd player starts to skip.

 

[btdickey99 5,000+ posts]

your setup seems to be louder than 125....but like nismos14 said its kinda hard to tell by just watching a vid

 

[audioholic 5,000+ posts]

Wtf? Cuz his rear view shakes a lil its def 130s' You guys are f'ing ridiculous.

I did nnot say mid 30's, Im not gonna guess on his score from a video beyond predicting its louder than 125db. Are you saying that's not a fair statement?

 

[Firmbiz94 10+ year member]

dont get all upset..just being that it is a new car and it looked like his headliner was even shaking a lil bit i dont think 125 would do that..

 

[btdickey99 5,000+ posts]

Pics of setup and how everything is wired would help too

 

[canyouhearmatt 10+ year member]

uhh...125db..i was doing a 137db with 2 JL W3V2 10's with about 450 wrms a piece to em..

 

[MTXman 10+ year member]

It was definitely the cheap *** mic.

125 is nothing, honestly. My old comps could do 125's, seriously.

Youre prolly around a 131.x-133.x on a TL judging from the vid.

 

[Firmbiz94 10+ year member]

and being that is isnt a bad setup..unless his box is totally f-ed up he should be doin louder than a 125..those subs sell for 300 on sonic..they say they are 2200 wrms..i dont know how accurate that is tho

 

[luvinthebass 5,000+ posts]

my shitty LA 12" sub from walmart in a 1.25 cu ft box sealed that i still have and my RF 400.2 amp(new), did 124 at the dash with 300 watts. 119 at the headrest. still pretty loud to me.

my car is a 2001 ford taurus and all the bass stays in side the car i noticed cuz the trunk is back there a few. rattles more then ever with this new amp, gonna have to do some more sound deadening, hell even if i did 1000 rms on a sub and a good size box i'd prolly only pull 125-130 with this trunk car.

 

[luvinthebass 5,000+ posts]

My Formula that is pretty dead on with 1 sub only

sensitivity of sub: 86 db

remember it takes 3 db's for double the power

86 db = 1 watt

89 db = 2 watts

92 db = 4 watts

95 db = 8 watts

98 db = 16 watts

101 db = 32 watts

104 db = 64 watts

107 db = 128 watts

110 db = 256 watts

113 db = 512 watts

116 db = 1024 watts

119 db = 2048 watts

so... 128 watts to LA 12" sub + car transfer function of 12 db's = 119 db + or - 3 with windows up or down, on db meter it read 119 with them up, 122 with windows slightly down for my car.

1012 watts to a future sub for me + car transfer function of 12 db's = 128 db + 3 db's (for ported) = 131 db's

 

[btdickey99 5,000+ posts]

My Formula that is pretty dead on with 1 sub only
sensitivity of sub: 86 db

remember it takes 3 db's for double the power

86 db = 1 watt

89 db = 2 watts

92 db = 4 watts

95 db = 8 watts

98 db = 16 watts

101 db = 32 watts

104 db = 64 watts

107 db = 128 watts

110 db = 256 watts

113 db = 512 watts

116 db = 1024 watts

119 db = 2048 watts

so... 128 watts to LA 12" sub + car transfer function of 12 db's = 119 db + or - 3 with windows up or down, on db meter it read 119 with them up, 122 with windows slightly down for my car.

1012 watts to a future sub for me + car transfer function of 12 db's = 128 db + 3 db's (for ported) = 131 db's

you can use a formula to figure out what someone is metering...

Too many factors

 

[T3mpest 10+ year member]

My Formula that is pretty dead on with 1 sub only
sensitivity of sub: 86 db

remember it takes 3 db's for double the power

86 db = 1 watt

89 db = 2 watts

92 db = 4 watts

95 db = 8 watts

98 db = 16 watts

101 db = 32 watts

104 db = 64 watts

107 db = 128 watts

110 db = 256 watts

113 db = 512 watts

116 db = 1024 watts

119 db = 2048 watts

so... 128 watts to LA 12" sub + car transfer function of 12 db's = 119 db + or - 3 with windows up or down, on db meter it read 119 with them up, 122 with windows slightly down for my car.

1012 watts to a future sub for me + car transfer function of 12 db's = 128 db + 3 db's (for ported) = 131 db's

yeah, that's probably not too accurate. Power compression will kick in long before rms, impedence will vary wildly on alot of drivers even at low power levels depending on the enclosure and a spl box will be ported scewing the results even further. That type of spl estimates only really works decently with higher frequency drivers, tweets and mibasses, etc.

 

[luvinthebass 5,000+ posts]

yeah, that's probably not too accurate. Power compression will kick in long before rms, impedence will vary wildly on alot of drivers even at low power levels depending on the enclosure and a spl box will be ported scewing the results even further. That type of spl estimates only really works decently with higher frequency drivers, tweets and mibasses, etc.

was pretty dead on for my fronts too.

 

[mrogowski 5,000+ posts]

If memory serves, the RS meter peaks at 129dB, hence the 125dB volume statement. There's a calibration file you can reference to "correct" the tolerances the RS meter has.

 

[Firmbiz94 10+ year member]

i dont know about that formula..i have a single 15" sx..with 1300 watts..if you count the front stage i am running 1600 watts..i hit a 145 and change on music...so with that formula i shoud only be hitting around 120?//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif