PDA

View Full Version : Sending more than RMS to a speaker



flakko
08-01-2005, 01:31 PM
okay this previous thread kinda started to give me some questions about over powering a speaker.

You guys said i can 2x the RMS to speakers and not blow it.

now right now i am sending my speakers 80w (rated at 60) and they are taking it fine. Now i set my gains with the head unit at 30/35 with a 1000hz test tone. Once i turn my head unit passed 30, my speaker starts to distort and bottom out. Now not even being a pure sine wave im pretty sure that the music wasnt giving the speakers a full 80w.

tRiGgEr
08-01-2005, 02:13 PM
This is where the "if you know what your doing" comes in to play. At higher volumes some speakers can not reproduce low level frequencies very well. So the speaker will start to loose control or over excursion takes place. Making it sound distorted. It takes a lot of power to play a full frequency range on a speaker. If you have it passed high enough it will take it no problem.

So the lower the frequencies you play on your comps/coaxils the more careful you have to be with overpowering...

flakko
08-01-2005, 05:51 PM
kay thats wat i thot...

60ndown
08-01-2005, 06:00 PM
or, if you don't have a crossover ...

Turn down the volume/bass ... or increase the mid/treble ...



or increase the mid/treble ????!!!!!!,.............. eeeewwwwwwwwwwwwwww :eek:

SSS 18734
08-01-2005, 06:00 PM
well dont turn it up past 30... theres a reason you set your gains to that volume level

flakko
08-01-2005, 06:03 PM
^^^^ yea i was just wondering why people were sayin it was okay to send a speaker more than 2x its rated power, and not blow it. and i was runnin my comps at 80w and the second i turn it up passed that line, they start to disort and bottom out.

so i guess its just a matter of the frequency that is played.

bri487
08-01-2005, 06:03 PM
well dont turn it up past 30... theres a reason you set your gains to that volume level

exactly. you dont want the volume on your deck maxed out. :nono:

Luchman
08-01-2005, 06:13 PM
so.. just to clarify...

If i over power my speakers RMS by about 60w, but i set my gains right ( like that JL tutorial) i should be good?

Ignatowski
08-01-2005, 06:16 PM
Aura MR62 reccomendation 60w RMS
Excelerater sends it 180w RMS
Excelerater hated the SQ w 60w,now he loves it :)

flakko
08-01-2005, 06:18 PM
^^^that is a particular speaker tho. Some subs cant take more than rated power (Infinity) and some speakers are built to take more than rated power (IA) i guess it also depends on the build of the speaker.

bri487
08-01-2005, 06:23 PM
^^^that is a particular speaker tho. Some subs cant take more than rated power (Infinity) and some speakers are built to take more than rated power (IA) i guess it also depends on the build of the speaker.

and enclosure.

flakko
08-01-2005, 06:27 PM
ya. so things that affect power handling (not in any particular order):

1. enclosure

2. Crossover Point

3. Speaker Build

This is considering you have a capable amplifier.

tRiGgEr
08-01-2005, 06:32 PM
so.. just to clarify...

If i over power my speakers RMS by about 60w, but i set my gains right ( like that JL tutorial) i should be good?

If you set your gains, you wont have to worry about overpowering. Just set the gain to the speakers RMS power.

bimma85
08-01-2005, 06:37 PM
so.. just to clarify...

If i over power my speakers RMS by about 60w, but i set my gains right ( like that JL tutorial) i should be good?
what trigger just said, I dunno what you are thinking though... to my knowledge there is no theory that states all speakers may be overpowered by 60W :D.

ngsm13
08-01-2005, 07:11 PM
Aura MR62 reccomendation 60w RMS
Excelerater sends it 180w RMS
Excelerater hated the SQ w 60w,now he loves it :)

Just because you have a "180watt" rms amplifier (180 x 2 rms or whatev) doesn't mean you're sending you speakers 180 watts. Use a DMM and a 0dB test tone and set those speakers to 180rms power using AC voltage...and I guarantee you they wouldn't last long ;)

Me, I like head room. You can get an amp that is rated at TWICE the rms power, but that doesn't mean you're sending the speaker that much power. It depends on input signal strength, gains, etc.

NG

flakko
08-01-2005, 07:16 PM
Just because you have a "180watt" rms amplifier (180 x 2 rms or whatev) doesn't mean you're sending you speakers 180 watts. Use a DMM and a 0dB test tone and set those speakers to 180rms power using AC voltage...and I guarantee you they wouldn't last long ;)

Me, I like head room. You can get an amp that is rated at TWICE the rms power, but that doesn't mean you're sending the speaker that much power. It depends on input signal strength, gains, etc.

NG


EXACTLY! ya read that chinny?

Ignatowski
08-01-2005, 07:35 PM
I am positive its not getting 180w,but I have 3 amps I tried for the same speakers
eD 9.4
Diamond D5600.2
and my cheapo PA OV820
the eD was too low in output for my taste prolly close to being accurate though for what he advertised,I just hated its SQ,way too flat and no punch
the DA was way too much power prolly close to 200W ,
the cheapo amp was perfect,I am thinking it does prolly 135-145w compared to its advertised 180w
Actually,the amp has been running flawlessly for a while now,for 100.00 it has been good to me

.02

ngsm13
08-01-2005, 07:39 PM
I am positive its not getting 180w,but I have 3 amps I tried for the same speakers
eD 9.4
Diamond D5600.2
and my cheapo PA OV820
the eD was too low in output for my taste prolly close to being accurate though
the DA was way too much,the cheapo amp was perfect,I am thinking it does prolly 135-145w compared to its advertised 180w

.02

HEY! Read this:

Just because you have a "180watt" rms amplifier (180 x 2 rms or whatev) doesn't mean you're sending you speakers 180 watts. Use a DMM and a 0dB test tone and set those speakers to 180rms power using AC voltage...and I guarantee you they wouldn't last long ;)

Me, I like head room. You can get an amp that is rated at TWICE the rms power, but that doesn't mean you're sending the speaker that much power. It depends on input signal strength, gains, etc.

NG

You obviously did not get what I was saying.

NG

Ignatowski
08-01-2005, 07:43 PM
HEY! Read this:


You obviously did not get what I was saying.

NG


I do get it

FO

ngsm13
08-01-2005, 07:48 PM
I do get it

FO

Your reply above does not reflect this at all. I'm not talking about an amp being overrated. ;)

NG

Luchman
08-01-2005, 08:46 PM
what trigger just said, I dunno what you are thinking though... to my knowledge there is no theory that states all speakers may be overpowered by 60W :D.

Well i really didnt mean i would feed them 60w more than RMS, just the amps RMS would be 60w more than the speakers RMS. And from what people are saying here, that should be just fine.

http://forums.caraudio.com/vb/showthread.php?t=110183

Basically, im aiming for an amp to do that, so i believe that i would have to "overpower" my first pair, to amp the pros nicely.