SX Installed

[tRiGgEr 5,000+ posts]

I still stand behind setting your gain as per the tutorial for daily drivers. It will be less hassel and you will know your equipment is much safer.

Or listen to spkrman and crank those gains up to adjust to impedance rise...

 

[Spkrman]

AC current...is that ohms? And is that while i have the sub hooked up with a test tone playing?

its ac current? lol... measure it witha clamp meter

and of course... its the only way you can get current, if your putting out voltage across a load.

 

[Spkrman]

You cant measure imp. rise, it changes with the frequency. If your playing one tone for spl it helps but for a system made for playing music you cannot accuratly measure it.
The lower the frequency the lower the imp. will be, and vise versa for high frequencys.

of course it changes with freq.

so if you want to map it out... play every freq //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

lower the freq lower the imp rise my buttox! Get a box tuned to 30hz and play 30hz - with a low qts driver in a good size box especially, imp will be way high around tuning.... everything effects it - you just have to play a ton and measure.

 

[Decado 10+ year member]

Ok, so, what do you recommend i should set my gains to on my amp to adjust for impedence rise? 53 volts, 56.5 volts, i could prolly go way up on this amp w/o distorting the sub, but then again, i may not hear any distortion and it could still be hurting something...

 

[Spkrman]

Ok, so, what do you recommend i should set my gains to on my amp to adjust for impedence rise? 53 volts, 56.5 volts, i could prolly go way up on this amp w/o distorting the sub, but then again, i may not hear any distortion and it could still be hurting something...

this is why i set my gains with an SPL meter //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif Whatever is loudest, all that matters to me. Then I back off from +7 to -7 for cruisin around, and its still loud lol.

 

[JimJ 5,000+ posts]

AC current...is that ohms? And is that while i have the sub hooked up with a test tone playing?

Current = amperage...always in amps, whether AC or DC.

 

[audioholic 5,000+ posts]

And yes, the output from an amplifier is in AC, obviously.

 

[Decado 10+ year member]

Current = amperage...always in amps, whether AC or DC.

Thanks jack.

this is why i set my gains with an SPL meter //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif Whatever is loudest, all that matters to me. Then I back off from +7 to -7 for cruisin around, and its still loud lol.

And you dont damage equipment this way?

And yes, the output from an amplifier is in AC, obviously.

Lol, yes, i know.

 

[Spkrman]

Thanks jack.


And you dont damage equipment this way?

Lol, yes, i know.

nope, never do... mostly due to most any setup I do being extremely effeciant, so it doesnt take much to get loud anyway. Typicall 140+ is achieved with under 200 watts lol.