PDA

View Full Version : rms watts on your speakers



king ranch
12-16-2007, 11:06 AM
i am just wondering if you can give me ideas on how much to push to door speakers

if you can tell me what speakers you are running and how many rms watts over what recommend and how it sounds at full volume if any distortion or no, and also what amp u have pushing them
thanks

helotaxi
12-16-2007, 01:26 PM
CDT Eurosports. Rated power 150RMS. Running less than 75rms from a Phoenix Gold MS-275 with the gains set by ear to get "loud enough." Zero audible disortion. More than loud enough. Your ears will bleed before anything clips. Ton of power not needed on the front stage.

king ranch
12-16-2007, 01:28 PM
so if i go with infinty componets that are rated 90rms a piece and but a kicker 350.4 to them and put 90 rms to each speaker that will be plently loud enough and not blow the speakers
or i was thinking of going with a hifonics amp that pushes 170rms to each speaker will that blow them even though i think 170 is overrated from what i heard
thanks

helotaxi
12-16-2007, 01:46 PM
The determining factor is going to be how you have the gains set and how loud you turn it up. You could run 1wrms speakers off a 10kW rms amp and not blow them if you never turn it up. The power coming from the amp is proportional to the volume knob on the HU. In other words, an amp only puts out full rated power when the voltage of the signal from the HU (which is directly controlled by the volume control) reaches the voltage required by the amp for full power based on the current gain setting. If the gain control is set such that the amp needs a 5V signal to make full power and the HU can only send 4v at full volume, the amp will never make full power.

tcguy85
12-16-2007, 01:46 PM
i'm running phoenix gold RSD's as my front stage with a Kicker ZX550.2. i have the gains set for 150 watts rms per side. it gets crazy loud.

king ranch
12-16-2007, 01:55 PM
ok well for my budget the infintys work for me and i heard alot of good things bout them so thats what i am going with
and kicker amp over hifonics just bc its kicker and looks better than hifonics amp also will have 2 12's l7 with 1500 kicker amp
but i will prob turn my volume up all the way so how would i set everything on my amp for the doors i only want them for highs
thanks

filtor1
12-16-2007, 01:56 PM
Rainbow Powerline CS's. 425/door from a ZX850.4.

king ranch
12-16-2007, 01:57 PM
ok well for my budget the infintys work for me and i heard alot of good things bout them so thats what i am going with
and kicker amp over hifonics just bc its kicker and looks better than hifonics amp also will have 2 12's l7 with 1500 kicker amp
but i will prob turn my volume up all the way so how would i set everything on my amp for the doors i only want them for highs

tcguy85
12-16-2007, 04:31 PM
infinity's always lack mid-bass. i had a set of their top of the line comps(perfect 6.1's) and i hated them. when i first bought them i liked them but then i realized i had no mid-bass at all. if your looking for comps go with the phoenix gold rsd's. if your looking for coaxial's then look at the pioneer rev series. they are much much better for the money.

what is your budget for the set of speakers?

king ranch
12-16-2007, 04:51 PM
for all four around 300 i only want the door speakers for highs only

tcguy85
12-16-2007, 05:03 PM
i only want the door speakers for highs only


what do you mean? you don't want any mid-bass or mid-range sound in the front of your car?

king ranch
12-16-2007, 05:16 PM
well i mean i will have 2 12's l7's and a 1500 kicker amp for bass

tcguy85
12-16-2007, 05:20 PM
well i mean i will have 2 12's l7's and a 1500 kicker amp for bass

ok but if you don't have a set of speakers up front that don't have good mid-bass and midrange then you will be missing a lot of important material. from my experience the only thing worthwhile that Infinity makes is their home audio speakers. their car audio speakers have always lacked mid-bass big time. i would strongly suggest either Phoenix Gold rsd comps or pioneer revs if you are looking for cheap comps. i have the rsd's and the mid-bass is insane. you will definitely thank me later. take my advice, infinity for comps or coax's is a no no. even the highs are not perfect, they can get very harsh.

king ranch
12-16-2007, 05:27 PM
ok well send me links to the speakers you think will work best for me in my price range
thanks

tcguy85
12-16-2007, 05:36 PM
audiosaving.com or ebay for the PG RSD comps. they are $87 with shipping included. you won't believe you are listening to $90 speakers after you hear them properly installed off of a good 100 watts or more.

they sound like they should cost a few hundred dollars. the mid-bass is insane, and the mid-range is good, and the highs are very crisp and detailed, not one bit harsh.

as long as your amp can do a good 80 watts or more per channel at 4 ohms i'd say go for it. if you can bridge your amp and send all the power to the set they will sound sick. i have 150 watts rms per side and i don't even run rear speakers. i have my rsd set and my ten inch sub. it gets crazy loud and sounds awesome.

king ranch
12-16-2007, 09:25 PM
well they are only rated for 60 rms so if i push 100-150 to each speaker will it be able to handle it and not blow them at high voulume

tcguy85
12-16-2007, 09:32 PM
me and at least a dozen others on here have them on amps with the gains set for 150 watts rms per side. they take it like a champ all day long and sound amazing doing it!

another thing you gotta understand is they will never see 150 watts rms if you set the gains right. music is very dynamic.

king ranch
12-16-2007, 10:00 PM
well i am not sure how to set everything on a amp for door speakers or tweeters only subs
but when u say 150 to each side is tht front and back or only front 150 per speaker

ArrizX
12-16-2007, 10:02 PM
60 watts of a jbl cs.60 to all speakers speakers in the car.

way more then loud enough.

tcguy85
12-16-2007, 10:12 PM
well i am not sure how to set everything on a amp for door speakers or tweeters only subs
but when u say 150 to each side is tht front and back or only front 150 per speaker

i am only running the rsd's in the front, i am not using any rears.

to set the gains: find a -3db 1khz test tone and burn it onto a cd. unhook the speakers from the amp, hook a DMM to the speaker terminals on the amp(set it to a/c volts). turn the volume up to the number you would listen at(roughly 2/3 or 3/4 of the way up on most head units). play the test tone on repeat. start with the gain all the way down and slowly turn it up till you get the desired number to read on the DMM.

for 150 watts at 4 ohms the number you want to see on the display will be 24.5 volts a/c.

to get this you take the ohms(4) and multiply it by the wattage(150) and then take that number and get the square root of it. that number will be a/c volts.

now like i was saying before.... with the gains set this way the speakers should never see 150 watts rms. as long as you respect the volume knob and don't turn it past the point you used when you set the gains.

i have stuck the leads on the dmm on my speaker terminals while playing music loudly and i was only seeing numbers in the mid to high teens. for example 18 volts a/c is only 80 watts at 4ohms. then you have to factor in impedance rise as well. so i doubt my fronts have ever seen more than 100 watts for a very quick peak.

with all that being said they will be fine on 150 watts rms! :-)

king ranch
12-16-2007, 10:22 PM
ok well i really like the gold speakers i plan on getting the 6.5 comps for the back and i have 6x8's in my front now how can i put 6.5 comps in the front as well
and also for the amp i am looking at a 350.4 bridged 2 ch at 4 ohms each speaker should see around 88rms would that be bout right and not worry bout blowing them and also be really loud
thanks

tcguy85
12-16-2007, 10:26 PM
if you bridge that amp you can get more than 88 per side. here are the specs on that amp:

- 60 Watts x 4 RMS 4 ohms CEA rating
- 90 Watts x 4 RMS @ 2 ohms
**- 175 Watts RMS x 2 @ 4 ohms**

it will do up to 175 x2 at 4ohms. so take it, and bridge it and set the gains for 150 watts per side.

tcguy85
12-16-2007, 10:28 PM
another option would be the zx450.2, if you're gonna use it as a 2 channel then why not just make is easier and get a 2 channel? the zx450.2 does 150 x2 at 4ohms. i got the zx550.2 cause i wanted a whole bunch of headroom but it's not really needed.

king ranch
12-16-2007, 10:39 PM
well thats only 75rms per speaker with the 350.4 bridged i will get 87.5rms to each speaker
another question will it sound good if i put no deadner or w/e its called the truck these are going in is a f150 4 door king ranch
also how can i make the 6.5 fit in the front

tcguy85
12-16-2007, 10:45 PM
well thats only 75rms per speaker with the 350.4 bridged i will get 87.5rms to each speaker
another question will it sound good if i put no deadner or w/e its called the truck these are going in is a f150 4 door king ranch
also how can i make the 6.5 fit in the front

if you bridge it you will get way more than 87.5. i don't know where you are getting these numbers.

i would recommend deadener.

bamaboy
12-16-2007, 10:47 PM
running close to 300rms per side on my pro 60's

cross them over a little higher, but they take it no problem

thats just specs, music is dynamic so not near that power really going

king ranch
12-16-2007, 10:48 PM
i am talking about the 350.4 says 175 x2 at 4ohms bridged that means each channel is putting out 175 i am going to be hooking up 2 speakers to one channel so thats 87.5 correct
and by the way i am only 17 soon to be 18 years old and i dont kno alot bout audio first system was 3 10's mtx with a 1200 watt sony amp so yea
and i have about a $2k dollar budget for subs, custom box, 4 door speakers, amp for subs, amp for doors, and a flip out dvd touchsreen hu.

tcguy85
12-16-2007, 10:51 PM
how are you hooking 2 speakers to each channel? i'm not understanding what you are thinking of doing i guess. you are hooking one set of the RSD's to an amp right?

king ranch
12-16-2007, 10:56 PM
i am going to have 4 speakers and i was wanting to bridge the 350 into 2 channels and hook up 2 speakers to each channel so 4 speakers to 2 channels is that possible

tcguy85
12-16-2007, 11:01 PM
i am going to have 4 speakers and i was wanting to bridge the 350 into 2 channels and hook up 2 speakers to each channel so 4 speakers to 2 channels is that possible

that doesn't really make sense. if it was me i would just bridge the amp and send all the power to the fronts. or just get a 2 channel for the fronts like i suggested before. if you need rears run them off the deck, whether it be the stock speakers or a nicer set. it sounds much nicer having most of the sound up in front of you. i have just fronts and it is plenty. it fills the whole car with out a problem.

king ranch
12-16-2007, 11:14 PM
ok but is it possible to do what i said

94Mazda626
12-16-2007, 11:15 PM
I've got Alpine SPX-177R 6.5" Type-X components rated at 75w getting 150 off a Kicker SX600.2

Most people on here will tell you that you that you don't need rear speakers. I've got my stock ones running off the deck and have them faded out about 95% of the time. The PG RSD comp have been getiing great reviews from everybody who has tried them, and when I've heeard the infinity's they always seemed to bright to me (too much high freqs not enough mid).

Mid bass and mid range are important, the sub will usually start being crossed out at 80-120 Hz, mid bass starts to take over from this point.

Get the RSD's and the Kicker zx450.2 read the door sealing/deadening sticky in the speaker section and you'll be very happy.

94Mazda626
12-16-2007, 11:25 PM
ok but is it possible to do what i said


If
Sure,It's possible but why bridge it then split it? If your going to go with 4 speakers just run one per channel you'll get the same power per speaker plus more options for adjusting the sound to your preference.

Personally, like I said I would go with the rsd's and the zx450.2. Each speaker will get 150 watts and the sound will be great.

Are there many shops around you? Go to a few and listen to these setups and get what your happy with.

patrick1202
12-16-2007, 11:29 PM
you don't want to turn the hu up all the way keep keep the voluuuuuume like 3/4 and set gains there

tcguy85
12-16-2007, 11:36 PM
If
Sure,It's possible but why bridge it then split it? If your going to go with 4 speakers just run one per channel you'll get the same power per speaker plus more options for adjusting the sound to your preference.

Personally, like I said I would go with the rsd's and the zx450.2. Each speaker will get 150 watts and the sound will be great.

Are there many shops around you? Go to a few and listen to these setups and get what your happy with.

somebody agrees with me.

king ranch
12-16-2007, 11:42 PM
ok then how bout if i go with the 650.4 each speaker will get 120 rms will that work decent

tcguy85
12-17-2007, 12:01 AM
ok then how bout if i go with the 650.4 each speaker will get 120 rms will that work decent

you could do that as well. i just don't like or need rear fill. especially not 120 watts per rear. for rears i would just run them off of head unit power and save the power for the front set.

94Mazda626
12-17-2007, 12:20 AM
you could do that as well. i just don't like or need rear fill. especially not 120 watts per rear. for rears i would just run them off of head unit power and save the power for the front set.

For the third or fourth time X2

Kriszilla
12-18-2007, 11:48 AM
Focal 165V2S comps. Rated for 75 RMS and they're running on 200 RMS each from my Punch75. They sound fantastic!

tcguy85
12-18-2007, 08:24 PM
you will get a much better sound feeding a lot of power to fronts and not even running rears.

it'll sound even better if you can cross them over low like 63hz or even 50hz. then you should have a very up front sound even with the bass.

king ranch
12-18-2007, 08:31 PM
ok i was thinking of going with a kicker 650.4 so each speaker will get 120 rms and i think a 4 channel amp i am going to get incase i decide to go with rear speakers just incase
also can i just hook the rears up and run all 4 channels from the HU to the rear speakers so each rear speaker will get around 35rms will that work decent and still not kill the fronts and make the fronts get around 70% of the music and the rear around 30 the only thing with that is i have a pac remote wire that slpices into the speaker wires and converts to a rca its hooked up to the rear speakers so i cant do that or i will lose bass
also how can i set the hz
and whats imgaing??
sorry for all the questions