DMM tuning with strapped amps?

[agarabaghi 0]

Im going to be strapping my 2 audiopipe apsm1300, essentially the master amp will control both amps. The amps strapped together are suppose to do ~2000watts @ 2 ohms. Is it possible to hook them up strapped and do DMM tuning by putting the probes on each amps terminal?

The master amp is the + and the slave amp is the - ... does this work?

~63volt for the DMM meter... sqrt(2000 * 2ohm)

[CrazyKenKid 64]

when i strapped my sundown amps that is how i tuned my amps initially then i used an o-scope to see what was going on! Just be sure to be in VAC (volts a/c)

[agarabaghi 0]

cool, i dont have an oscope so this will do. thanks!

[95Honda 486]

You can't use that formula with speakers, it will only work into a non-reactive load.

Save the DMM for something else.

[CrazyKenKid 64]

hey here is a good read! about pmpo vs rms!

http://www.edaboard.com/thread4681.html

and your amp is rated in pmpo which I have just seen today!

[CrazyKenKid 64]

You can't use that formula with speakers, it will only work into a non-reactive load.

Save the DMM for something else.

he is using it for two amps not speakers? or did i miss something...

[pmureika 31]

I think you only need to do the master amp.

[95Honda 486]

No, that formula only has one variable, voltage, in order to work correctly. You are adding a second variable, impedance. You have no idea what this variable is. It isn't 2 ohms, ever. No matter what subs you have. This is because a subwoofer is a reactive load and fluctautes impedance costantly at varying frequency/temp/enclosure.

Again, you cannot measure power with a single DMM alone into a reactive load.

Save your DMM for something else.

[pmureika 31]

No, that formula only has one variable, voltage, in order to work correctly. You are adding a second variable, impedance. You have no idea what this variable is. It isn't 2 ohms, ever. No matter what subs you have. This is because a subwoofer is a reactive load and fluctautes impedance costantly at varying frequency/temp/enclosure.

Again, you cannot measure power with a single DMM alone into a reactive load.

Save your DMM for something else.

He is setting the amps for proper gain.

[95Honda 486]

You cannot set the gain properly using that formula (or chart) because you have an undefined variable (impedance). This is the whole point.

Read what I posted carefully, it will make sense if you break it down.

[pmureika 31]

You cannot set the gain properly using that formula (or chart) because you have an undefined variable (impedance). This is the whole point.

Read what I posted carefully, it will make sense if you break it down.

Okay