Gain Setting Tutorial

[Decado 10+ year member]

Are you in the proper range?
Call me crazy, but in this thread dedicated to setting gains, I find it a bit odd that you are trying to get your multimeter to read 40 volts. What are you trying to do?

Set his gains...//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif.

 

[Justinw303 10+ year member]

Decado, can you help me out? Was I right with the 200 x 8 calculation, or am I figuring wrong?

 

[Decado 10+ year member]

Decado, can you help me out? Was I right with the 200 x 8 calculation, or am I figuring wrong?

If I were you i'd just hook both subs up to the one terminal and then go with 4 ohms, it would be alot less confusing.

 

[chris13 10+ year member]

Well 40 volts is what i got after i did the formula

800 x 2=1600

1600 sqrt= 40v

But the dmm just reads 4.0

 

[Decado 10+ year member]

Well 40 volts is what i got after i did the formula 800 x 2=1600

1600 sqrt= 40v

But the dmm just reads 4.0

Either your not turning your gains up, you don't have your dmm ranged properly, or you need a new dmm.

 

[chris13 10+ year member]

Either your not turning your gains up, you don't have your dmm ranged properly, or you need a new dmm.

Yes I did turn my gain up but i was just wondering if the V with the wave above it is the symbol for AC because thats the symbol on the dmm.

This is a link to my multimeter http://www.canadiantire.ca/assortments/product_detail.jsp?FOLDER%3C%3Efolder_id=1408474396670087&ASSORTMENT%3C%3East_id=1408474396670271&bmUID=1130801331490&PRODUCT%3C%3Eprd_id=845524442202179&assortment=primary&fromSearch=true

 

[DBfan187 5,000+ posts]

~v = Ac

 

[chris13 10+ year member]

I was also wodering if I should start the car first before testing the amp with the dmm.

 

[Decado 10+ year member]

I was also wodering if I should start the car first before testing the amp with the dmm.

Yes, then you get the voltage at the amp that you would normally get with the car on.

 

[Raisedin305 5,000+ posts]

I was also wodering if I should start the car first before testing the amp with the dmm.

Of course. You listen to your system with the car on or off?

 

[Raisedin305 5,000+ posts]

If I got two subwoofers and I want each sub to get 1,000rms @ 1ohm do I do 2,000rms x 1(ohm) then get the sqrt of 2,000 which is 44.721. Correct?

 

[Decado 10+ year member]

If I got two subwoofers and I want each sub to get 1,000rms @ 1ohm do I do 2,000rms x 1(ohm) then get the sqrt of 2,000 which is 44.721. Correct?

Uhh...2 DVC 4ohm subs running at 1 ohm? If you're talking about dvc 2 ohm subs and running each at 1 ohm you would have a final load of .5 ohms with the 2 combined.

 

[chris13 10+ year member]

Of course. You listen to your system with the car on or off?

I was talking about when you turn the key to the radio mode and its just the radio that works.

 

[Decado 10+ year member]

I was talking about when you turn the key to the radio mode and its just the radio that works.

Turn your car on, engine and everything, lol.

 

[Raisedin305 5,000+ posts]

Uhh...2 DVC 4ohm subs running at 1 ohm? If you're talking about dvc 2 ohm subs and running each at 1 ohm you would have a final load of .5 ohms with the 2 combined.

I don't have DVC2 i got DVC 4