can you blow your amp from to small power wire

[Pyro_By_Nature 5,000+ posts]

Depending on length, I'd take 4 gauge up to about 120 ish.

 

[Pyro_By_Nature 5,000+ posts]

BTW: Too much of a voltage drop will fry the mosfets in the power supply of an amp. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[500000watts 10+ year member]

will it do the same thing if you play it at low levels until you get thicker gauge wire

 

[Kriszilla 10+ year member]

Theoretically, it could. The MOSFET's are designed to run at a certain operational voltage / efficiency. Even with gains turned down, with enough power drops, you possibly could blow out the input side of things.

 

[500000watts 10+ year member]

so for that this Hifonics BXi1606D amp you think 4 gauge power wire should be fine?

 

[n2audio 5,000+ posts]

I asked the same question at carsound looking for some background info...

hopefully you'll find it to be of interest.

http://www.audiogroupforum.com/csforum/showthread.php?t=65076

4 ga on the 1606?

Ummm - might JUST do the job if the wire's not very long (

The way I listen most of the time I wouldn't hesitate to use 4 ga, but if you're planning to lean on that amp very often you'd be better off with 2 ga or 1/0.

 

[generalGOTCHA 10+ year member]

small wire big amp hot wire fire car

This is the correct answer.

 

[generalGOTCHA 10+ year member]

BTW: Too much of a voltage drop will fry the mosfets in the power supply of an amp. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

So would a capacitor relieve this stress ?

Also how does a voltage drop across the mosfet cause it to fry ?

A transistors thermal capabilities are a set value am I not correct ?

http://www.kpsec.freeuk.com/trancirc.htm

So wouldnt increasing current or increasing voltage cause thermal breakdown ?

P = I x V.

Thus, if P goes down one of the two I, or V would have gone down.

Since we will say I is constant but voltage is the only thing to drop then P would be less ????

Please educate . I am open ears .. its been a while since I went component level.

 

[Eugenics 5,000+ posts]

so i guess my little alt is an amp killer too

 

[generalGOTCHA 10+ year member]

so i guess my little alt is an amp killer too

LOL if your car doesnt start then yeah LOL it could be.

Wire your alternator backwards (DC) and see what effect is has on your (AC) output lol. Then come back and make a post about your discovery.

LOL LOL

I always think that my electronics background makes me understand the problems that I have when it comes to car audio. Then you find the more you know or think you know, theres something someone else had already experianced that your about to go through. So I tend to listen and ask questions and bite my pride being a graduate in electronics. Oh well ....

 

[Pyro_By_Nature 5,000+ posts]

So would a capacitor relieve this stress ?
Also how does a voltage drop across the mosfet cause it to fry ?

A transistors thermal capabilities are a set value am I not correct ?

http://www.kpsec.freeuk.com/trancirc.htm

So wouldnt increasing current or increasing voltage cause thermal breakdown ?

P = I x V.

Thus, if P goes down one of the two I, or V would have gone down.

Since we will say I is constant but voltage is the only thing to drop then P would be less ????

Please educate . I am open ears .. its been a while since I went component level.

I just woke up after a little nap, so let me know if I don't make sense.

When you have a lower voltage, the amp is going to try to draw more current.The mosfets can only handle so much, go above that and poof.There was a good topic discussing this a few weeks back.

 

[Pyro_By_Nature 5,000+ posts]

so for that this Hifonics BXi1606D amp you think 4 gauge power wire should be fine?

Depends on the length.Anything longer than about 14-16ft and I would DEFINENTLY get 2 gauge or just go all out on 1/0.