tuning by meter ?

[AVNCHRIS]

hey guys..
this maybe goes to judd or paint or anyone else for the help
my question is.. i want to tune my subs to the max performance. so that why i was look at this http://mobile.jlaudio.com/support_pages.php?page_id=143
tuning with a volt meter? but what i dont get is how many watt(or volts) do i need to get up too and how much is it to the subs ? (ie say 14v what does that = to? as for watts)

thx

[paint toad]

i could not tell you what the formula is or how they come up with those numbers....but that is jl,for maximum performance with no clipping......rest assured,that chart is not for every amp out there,it's jl specific.

i'm sure any respectable amp manufacturer will have a recommended voltage you need to set at,call your amp maker

[AVNCHRIS]

Quote: Originally Posted by paint toad

i could not tell you what the formula is or how they come up with those numbers....but that is jl,for maximum performance with no clipping......rest assured,that chart is not for every amp out there,it's jl specific.

i'm sure any respectable amp manufacturer will have a recommended voltage you need to set at,call your amp maker

oh i see.. ya i knew jl only for there amps. i should of said so but ya..
i knew there was a site that had the formula's all u did was punch some numbers(watts) in and it would give u the volts number.. but that site went down.

maybe someone else knows.
thx i appreciate

[paint toad]

jed would know...

[beandip]

OR i would know......maybe.

I think i remember that site, i saw it posted on here awhile ago. Good thing i saved the PDF .

hope this helps, i don't know if this works or not i haven't tried it.

[juddspaintballs]

i'm heading to ohio right now. you can survive a few days without me joe

[skinnyg]

alot of those formulas also assume that the amps are 100% efficient, are you talking about setting your gains?

[AVNCHRIS]

beandip -

umm..i dont really know about that farmual.seems a lil too easy .but if some one can back this up i try it. because the site that i seen say like u play a hz (32hz) then tune for a watt number?


skinnyg

yes im trying to set the gains,


thx.

[danssoslow]

The only accurate way of finding out the wattage going to your subs is by first checking the voltage at the terminals, and then checking the amperage with a clamp on meter around one of the leads (either the positive or the negative, not both) going to the sub. Wattage= Amperage x Voltage.
The method shown by beandip can vary drastically, since the impedance of the sub will change with frequency; and there is no magical frequency where every sub will play at its nominal impedance.

When it comes down to it, the best way is to use your ears; since that is what you attempting to please anyways. I assure you that if you tune your system by ear, that the difference between what you feel is perfect and the few watts that might be left on the table will not be enough for it to make any discernible difference to you at all.
Another thing to keep in mind, that multimeter doesn't know what distortion is, nor what a clipped signal is. The quality of the CD can effect your tuning, as music that is recorded at -0dB is going to be louder than a burnt cd recorded at -5dB.
There are many ever changing variables that can come back to bite you in the arse if you are trying to tune by numbers and not by your own judgement.

[AVNCHRIS]

Quote: Originally Posted by danssoslow

The only accurate way of finding out the wattage going to your subs is by first checking the voltage at the terminals, and then checking the amperage with a clamp on meter around one of the leads (either the positive or the negative, not both) going to the sub. Wattage= Amperage x Voltage.
The method shown by beandip can vary drastically, since the impedance of the sub will change with frequency; and there is no magical frequency where every sub will play at its nominal impedance.

When it comes down to it, the best way is to use your ears; since that is what you attempting to please anyways. I assure you that if you tune your system by ear, that the difference between what you feel is perfect and the few watts that might be left on the table will not be enough for it to make any discernible difference to you at all.
Another thing to keep in mind, that multimeter doesn't know what distortion is, nor what a clipped signal is. The quality of the CD can effect your tuning, as music that is recorded at -0dB is going to be louder than a burnt cd recorded at -5dB.
There are many ever changing variables that can come back to bite you in the arse if you are trying to tune by numbers and not by your own judgement.

ya i think it best to tune by my ears. i always have
all this is confused me. now.
but really thanks for the help everyone