what do i need to bench test my set-up

[carlosg_313]

so i was thinking about knowing what to get so i can be able to test everything in my set-up. test as in how many current does my amp take, and how many watts is give to the sub. what my final impedance after rise. any math equation involve? anything that include in a bench test, i really want to know so i can have an idea how much power i actually have than reading how many watts the amp is rated for.

[RickyFriery97]

a digital multi meter, AC/DC clamp meter, oscope to set your gains would help there is a lil math involved to find rise and RMS

id have to look it up though

edit: your in houston? im in league city were not to far frome each other

Edited May 16, 2011 by RickyFriery97

[skittlesRgood]

in a bench test, the amp is on your work bench. usually hooked up to a nonreactive load.

for clamping your amp you need what ricky said. just look up ohms law for the math equations.

[RickyFriery97]

found this post abouth calcualtiong box rise and finding rms power from your amp

hope this helps

Correct you need an AC clamp meter and a dmm. You will need to measure the AC voltage output going to each of your subs or if they're bridged just the wires going into the amp. Once you get the AC voltage you will need to find the AC current. You do this by clamping the negative wire going to the set of speakers. I'll give you an example.

You clamp your wire and get 38.6 amps of current

You probe the + & - wires and get 61.7 volts

Next you would take the 61.7 volts and multiply the 38.6 by it to find your MAX power which would be 2381 watts

Next to find out your impedence rise you would divide the voltage 61.7 by the amperage 38.6 which would be 1.59 ohms

So if you were to have a nominal or starting resistance of .5 ohms you would have a rise of 1.09 ohms, but would have an overall reactive load of 1.59 ohms

[carlosg_313]

a digital multi meter, AC/DC clamp meter, oscope to set your gains would help there is a lil math involved to find rise and RMS

id have to look it up though

edit: your in houston? im in league city were not to far frome each other

yes sir im in houston, off i-45, by spring. a little bit north from greenspoint(gunspoint).

EDIT: when we all texans gonna have a meet? lol

Edited May 16, 2011 by carlosg_313

[carlosg_313]

found this post abouth calcualtiong box rise and finding rms power from your amp

hope this helps

Correct you need an AC clamp meter and a dmm. You will need to measure the AC voltage output going to each of your subs or if they're bridged just the wires going into the amp. Once you get the AC voltage you will need to find the AC current. You do this by clamping the negative wire going to the set of speakers. I'll give you an example.

You clamp your wire and get 38.6 amps of current

You probe the + & - wires and get 61.7 volts

Next you would take the 61.7 volts and multiply the 38.6 by it to find your MAX power which would be 2381 watts

Next to find out your impedence rise you would divide the voltage 61.7 by the amperage 38.6 which would be 1.59 ohms

So if you were to have a nominal or starting resistance of .5 ohms you would have a rise of 1.09 ohms, but would have an overall reactive load of 1.59 ohms

wow makes a lot of sense. i always thought about the math equation is a bit difficult. thanks for the help guys.

EDIT: on the clamp meter, and ddm, would you guys recommend using radio shack clamp and ddm? i happen to work at radio shack and get 50% off discount on home brands

Edited May 16, 2011 by carlosg_313

[RickyFriery97]

a digital multi meter, AC/DC clamp meter, oscope to set your gains would help there is a lil math involved to find rise and RMS

id have to look it up though

edit: your in houston? im in league city were not to far frome each other

yes sir im in houston, off i-45, by spring. a little bit north from greenspoint(gunspoint).

nice, my buddys girlfriend lives up there and hes up there all the time

you gunna be at heatwave?

[RickyFriery97]

found this post abouth calcualtiong box rise and finding rms power from your amp

hope this helps

Correct you need an AC clamp meter and a dmm. You will need to measure the AC voltage output going to each of your subs or if they're bridged just the wires going into the amp. Once you get the AC voltage you will need to find the AC current. You do this by clamping the negative wire going to the set of speakers. I'll give you an example.

You clamp your wire and get 38.6 amps of current

You probe the + & - wires and get 61.7 volts

Next you would take the 61.7 volts and multiply the 38.6 by it to find your MAX power which would be 2381 watts

Next to find out your impedence rise you would divide the voltage 61.7 by the amperage 38.6 which would be 1.59 ohms

So if you were to have a nominal or starting resistance of .5 ohms you would have a rise of 1.09 ohms, but would have an overall reactive load of 1.59 ohms

wow makes a lot of sense. i always thought about the math equation is a bit difficult. thanks for the help guys.

EDIT: on the clamp meter, and ddm, would you guys recommend using radio shack clamp and ddm? i happen to work at radio shack and get 50% off discount on home brands

no problem

i would probally use a DMM from there but id get a Clamp meter from sears or something a good AC/DC clamp meter

[carlosg_313]

a digital multi meter, AC/DC clamp meter, oscope to set your gains would help there is a lil math involved to find rise and RMS

id have to look it up though

edit: your in houston? im in league city were not to far frome each other

yes sir im in houston, off i-45, by spring. a little bit north from greenspoint(gunspoint).

nice, my buddys girlfriend lives up there and hes up there all the time

you gunna be at heatwave?

when will that be?

looked it up and its in SA.....not gonna make it unless i sell my 18 that i have in my garage for gas money. lol

Edited May 16, 2011 by carlosg_313

[RickyFriery97]

a digital multi meter, AC/DC clamp meter, oscope to set your gains would help there is a lil math involved to find rise and RMS

id have to look it up though

edit: your in houston? im in league city were not to far frome each other

yes sir im in houston, off i-45, by spring. a little bit north from greenspoint(gunspoint).

nice, my buddys girlfriend lives up there and hes up there all the time

you gunna be at heatwave?

when will that be?

the houston one is june 17th-19th