we seem to be getting some confusion over power in relation to ohm ratings for resistence. The lower the ohm rating the more power you will make. Typically an amp wired up to speakers to run 8 ohm will make half the power it would wired for 4 ohmapearoner said:Not too sure how resistance relates to the RMS output, but im fairly sure (from what ive heard) that RMS is the best indication of car audio equipt.
Sorry dude, my car audio knowledge is limited (as I said). Good luck, im looking at upgrading my system soon too.
SpenceyVTEC said:we seem to be getting some confusion over power in relation to ohm ratings for resistence. The lower the ohm rating the more power you will make. Typically an amp wired up to speakers to run 8 ohm will make half the power it would wired for 4 ohm
Sorry, I've been busy recently, haven't spent a lot of time on the site here.skatistic888 said:all right man thnx, but could you explain the 1st and 2nd point more detailed? i didnt get the 80A point, and what difference does it make 80A or sumthing else? i am assuming the 4 speakers (2 of 6x9 rear and 2of 6,5 front) that i'll get will run on the 4-channel amp, am i right? or 2 of them run on 1 4 channel amp? i am really confused there
thnx
Resistance is not actually used much for audio because it is a static measurement(it doesn't change)apearoner said:Not too sure how resistance relates to the RMS output, but im fairly sure (from what ive heard) that RMS is the best indication of car audio equipt.
Sorry dude, my car audio knowledge is limited (as I said). Good luck, im looking at upgrading my system soon too.
Your amp likely has a regulated power supply, good for 800W at 4 ohms. It isn't really limiting your power loss at 4 ohms, it's limiting you power gains at 2 ohms. This isn't all bad, either. A regulated power supply usually has more consistent power delivery at lower voltages, so your amp will perform the same no matter what. It just won't realize the gains of an unregulated power supply in optimal circumstances.Akiahara96 said:not necessarily half.. depends on your amp. My amp running at 4 ohms is 300w less than what I want to be running it at... 2 ohms, 1100w... if it were halved, I'd be pissed. But I love my amp...
Just commenting.
Akiahara96 said:no, you don't need a cap for your 4-channel amp...
I hope you didn't buy this stuff already... 'cuz just glancing at the specs for the woofers and the amp that you were talking about... they don't exactly match up together. And you won't be getting 1200w from that amp, either... ever.
Also, 3-way components, if you were thinking of getting those, are uber expensive... I'd just recommend 2-ways... especially if you're not driving the car yourself all the time... but don't install them without an amp first.
403 said:Your amp likely has a regulated power supply, good for 800W at 4 ohms. It isn't really limiting your power loss at 4 ohms, it's limiting you power gains at 2 ohms. This isn't all bad, either. A regulated power supply usually has more consistent power delivery at lower voltages, so your amp will perform the same no matter what. It just won't realize the gains of an unregulated power supply in optimal circumstances.
As far as gaining power at lower impedance, this is basic physics.
1- Half the resistance, twice the current.
2- Twice the current, at the same voltage = twice the power.
The problem with this is that not all amps are stable at 2 ohms. Some will blow up immediately, some will work for a while, some will remain stable with no power gain (this is a protection circuit), and some are optimized to run at lower impedance, limiting your performance at higher impedance.
i just checked the specs for the amp.Akiahara96 said:that amp is only like 200w x 2 @ 4 ohms... something like 500 x 1 @ 4 ohms...
it's hard to explain, 'cuz it's not something I've had to do, but it's like tricking it to think there's only one woofer. :: can't find the words to explain it ::
skatistic888 said:yea they look better than the others
that wouldnt make any compatibility problems, would it? cuz im gonna connect sony xplods to it
skatistic888 said:i think i'll be running at 4ohms at first, then maybe 2ohms..dont you think that there's no way of preventing that RMS will be lower than peak power? i mean it seems to me peak power is just an advertisement trick..whatever i get would be like that i assume..or do u know a better amp that would fit nicer? if i get something else, i can use this one for rear speakers, right? i have 2 woofers by the way