how to set gains with dmm with rf t1500-1bdCP

[Falcons 5,000+ posts]

i am recieving a package in the mail and i need to set the gains to 2 ohm on my amp. using the formula sqrt(watts * ohms) i get a different number for 2 ohms than 1 ohm. its 59.1 ac volts for 2 ohms and 41.8 ac volts for 1 ohm. what do i set the gains on the amp to if they are the same watts for 1 ohm and 2 ohm? wouldnt they both be the same number of ac volts if they are putting out the same wattage?

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[LosIsATool 5,000+ posts]

They are not going to be the same.. That amp makes a bit more at 1ohm.. The birth sheet will show it. I've seen then even 100 watts more

 

[Falcons 5,000+ posts]

alright thanks. i knew it probably wasnt going to be exactly the same, i just wanted to make sure i wasnt going to clip or nothin. noob at CP amps. lol

 

[LosIsATool 5,000+ posts]

I'm going to pick up one sometime. After the HO and new box is in

 

[Falcons 5,000+ posts]

i just ordered one so i can finally fully power my sub

 

[LosIsATool 5,000+ posts]

I see you have 0 gauge, do you have a way to reduce to 4 awg

 

[Falcons 5,000+ posts]

yeah i run 0 guage from my front batt to my rear batt (kinetik hc800), then i run 4 guage to my 3 amps, (1 sub amp, 2 2 channel amps) then seperately ground them to my chassis. not the best way to do it but it works.

 

[The_Grimy_One 10+ year member]

yeah i run 0 guage from my front batt to my rear batt (kinetik hc800), then i run 4 guage to my 3 amps, (1 sub amp, 2 2 channel amps) then seperately ground them to my chassis. not the best way to do it but it works.

Not really sure how you could do it better, that's legit.

 

[The_Grimy_One 10+ year member]

i am recieving a package in the mail and i need to set the gains to 2 ohm on my amp. using the formula sqrt(watts * ohms) i get a different number for 2 ohms than 1 ohm. its 59.1 ac volts for 2 ohms and 41.8 ac volts for 1 ohm. what do i set the gains on the amp to if they are the same watts for 1 ohm and 2 ohm? wouldnt they both be the same number of ac volts if they are putting out the same wattage?

I'm not really sure how that works. I would ask someone who has one or just call fosgate. Because I would assume the voltage would be very close to the same, but I could be wrong. 100 watts won't move the voltage much...

 

[Falcons 5,000+ posts]

Not really sure how you could do it better, that's legit.

it beats spending money on distro blocks. and thank you

I'm not really sure how that works. I would ask someone who has one or just call fosgate. Because I would assume the voltage would be very close to the same, but I could be wrong. 100 watts won't move the voltage much...

yeah ill prolly call up fosgate if someone doesnt respond on here.

 

[vaiboy 10+ year member]

Voltage x Current = Wattage

and

Current x Impedance = Voltage

Wattage, Impedance, Current, and Voltage are all related so even if the amp produces the same wattage at 2Ω or 1Ω the voltage will be different.

Your amp with a 2Ω load.

Current x 2Ω = 59.1V

Current = 59.1 ÷ 2

Current = 29.55A

59.1V x 29.55A = Wattage

1746.4 = Wattage

Your amp with a 1Ω load

Current x 1Ω = 41.8V

Current = 41.8A

41.8V x 41.8A = Wattage

1747.2 = Wattage