ok guys I got a quick questino. a couple of my friends said that you can bridge any amp and run at 2 ohms? I know you can do it, but it says in the instruction book not to. My uncle and like 2 of my friends have done it on non 2ohm bridged stable amps and haven't had problems. but I didn't know, how fast will it overheat like the book says it will? thanks for the time.

 

No. You can NOT bridge every amp to a 2 ohm load. Your friends are most likly having overheating problems and cutting the life of their amp down every time they use it. Don't try it, if an instruction manual tells you not to do something, you probubly shoulden't do it.

-Matt

 

Depends on the quailty of the amp. Keep in mind though that the hotter an amp runs, the shorter it's life will be.

- Mike

 

If the book don't say you can, you shouldn't.

One thing that happens when you lower the resistance on an amp is that it starts to heat up quite a bit more than running it into 4 ohms.

That can lower the life of the amp, especially if it wasn't designed for it. Figure about 2 wks, if you run it like an amp should be run.

No really, if it has an attached fuse(s), then it'll probably blow that first. But do not increase the rating of the fuse just so it won't blow. An inline fuse for your power wire is OK to up the amp rating, but not one on the amp.

The one on the amp is made to protect the amp from internal melt down. But then again, if the amp is old enough, it won't even have an attached fuse.

AJ

 

ok my amp has an overheating circut that will shut the amp off if it gets to hot. do you think it would destroy the amp if I tried it just once to see what it does? also what if I hook some fans around it? would that make it cool any better?

 

What kind of amp is this?

- Mike

 

Ok, well what amp is it? Some are known to be able to live a long life running under conditions that the manufacturer doesn't reccomend. Anyone remember the old Punch 45, and Punch 45HD? I've done some crazy stuff with them, and I melted one of them down, and the rest still work to this day! Now, I'm not saying that I think you can do that with any of the Rockford Fosgate stuff of today (Ireally don't care too much for them since the good ole 45!) but there are some amps out there that will handle it.

One more example, My Kicker 160SS, running 2 4 ohm 12's in parallel. THat equals 2 ohm bridged. Amp still works fine, speaker have since torn.

Now....I'm NOT saying to try this at home! In fact, to cover my butt, I'll say "Don't try this at home!". But my point is that I have been known to push limits before with great results! (example, my Pentium3 650 has been running at 800 since day one!)

If you do happen to decide to try this, I would highly reccomend checking the temperature of the amp frequently, and slowly building up how hard you crank it. You may find a point at which the amp shuts down, and if you are careful, that's all that will happen, and you can go back and run the amp like it should be run.

Good luck.

 

the amp is a profile clarus. it says it has 75wx2 at 4ohm,110wx2 at 4ohms or 225x1 bridged at 4 ohms. and I wanna get another sub, but I'd prefer not to spend the money on a new amp. also what temp should an amp run? whats the normal temp?

 

I would say no.

- Mike

 

not all amps can run that low. Amps of higher quality, such as rockford, mtx, kicker, etc. are more likely to be stable at these levels but not necessarily. However, I'm running my mtx at 2ohms bridged and having no problems even though they do not say its stable. i wouldnt trust a profile to do that though

 

Well, for the temp, I'm really not sure. I would say around 120-130. Basically any warmer than that, and you can't keep your hand on it. I'm pretty sure my Kicker DX700 will shut down before that though, so don't use that as gospel. Some amps run fine at higher temps.

Personally, I don't think I would try it with a profile. It may sound just fine with a normal load, but they just haven't been all that great of quality from my experience. When you put another speaker on it, it may end up sounding like crap.