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help finding suitable sub for my amp.

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Hey guys i have an amp with 1114 rms output at 2 ohms, there for i am looking for a 10 inch sub which is rated around 1000 rms.

around 100 pounds would be nice, how ever i am willing to pay more.

thanks for the help.

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Ebay! You'll struggle to get a 1000W amp for 100 notes new mate. TBH, 1000W is fecking loud, and unlikely to be found on a 10" sub too

H&S

he's got the amp he just needs a sub

you could go for a cerwin vega vmax 10

your amp may be 1000 rms but i would suggest a sub that is a minimum of 500 rms as it is much better to give a sub too much power rather than the specified amount this will give you a bit more headroom to play with and will sound absolutely fine

for example my 12" dual 4 ohm sub is only rated at 600rms yet i am putting 1350 rms into it and have been for 5 years never had an issue

  • Author

ah i see, i will look into the sub you mentioned.

Also i thought putting that much extra power into a sub would be dangerous, but i guess not? haha

halfords for the win!

i have a mutant 1200 what sub ,in a ported box , 80 pounds in the west midlands

  • Author
halfords for the win!

lol no.

i have a mutant 1200 what sub ,in a ported box , 80 pounds in the west midlands

Thanks for the offer mate but i see to many mutant products returned to halfords.

bear this in mind it is A LOT easier to blow up a sub by underpowering it than it is by overpowering it

bear this in mind it is A LOT easier to blow up a sub by underpowering it than it is by overpowering it

How?

H&S

if for example you have a 1000 rms sub(which is its continuous/minimum power rating) and run it off say a 200 rms amp then the coils on the sub will get hot and eventually expand and burn out as theres not enough power in the amp to drive it

people are under the misconception that the gain on an amp is a volume control and turn it all the way up and what happens is the amp goes into clipping/distortion

this is where the signal coming out from the amp goes from and AC voltage which is good to DC which is very bad

so therefore if you have an amp that is more powerful than the subs continuous power rating you have less chance of blowing it up as it will give its rms power at a lower gain setting

if you don't believe this then get yourself logged on to www.talkaudio.co.uk and ask there they will all say the same

case in point in one of my old spl cars i used to have a single 15" soundstream sub rated at 2000 rms and i was running it off 4 soundstream pca3500d amps so in total i was giving the sub a continuous power input of nearly 7000rms and it never had a problem

its not that i dont believe you, just interested.

thanks

H&S

Does the same go for smaller speakers? btw

H&S

absolutely

all speakers have a nominal/minimum power rating

if for example they say 30 rms nominal that means they ideally require a minimum rms power input of 30 rms

my fronts in my golf are rated at 80 rms and i amp putting 195 rms into each side and i have had them like that for the last 5 years

So ideally, you want the amp RMS greater than the speaker RMS?

H&S

yes a general rule of thumb is get an amp that is rated at around 30-50 % more powerful

Interesting. I always thought it was the other way round. So you couldnt supply the speakers with more power than they can handle

H&S

halfords for the win!

lol no.

i have a mutant 1200 what sub ,in a ported box , 80 pounds in the west midlands

Thanks for the offer mate but i see to many mutant products returned to halfords.

yeh i no they are shoddy peices of work :lol: www.bassjunkies.com is always a good site for anything to do with car audio

luke

dnt use halfords or bassjunkies go to caraudiodirect they are so much better for sound

better powering a sub with a amp that has a lower rms value than the sub to reduce the risk of blowing the coils etc

Edited by trendyscotsman12

  • Author

hmm i dunno, i think my current sub which is rated at 1000 rms, sounds great with my 1114 rms amp.

yeah probz does but if you see a package thing from halfords for like £99 pound dnt buy them.They usauly contain shit

what kind of sub and amp do you have bud

  • Author

i dont buy stuff from halfords, i work there, and so i know its all terrible. Only thing i would buy is a head unit which has been price matched and then with my discount:P

i have a jbl amp and pioneer sub currently.

better powering a sub with a amp that has a lower rms value than the sub to reduce the risk of blowing the coils etc

i take it you did not read my previous post regarding UNDERPOWERING as sub

let me clear this up

underpowering a sub by a substantial amount causes an amp to go into what is known as clipping clipping is also known as distortion both of these are VERY bad for subs and speakers

rms is it minimum/nominal power requirements if it says 1000rms you should ideally give it AT LEAST 1000rms

less power causes more heat more heat causes blown coils blown coils give dead sub

more power causes less heat less heat keeps your sub alive

its as simple as that

i take it you did not read my previous post regarding UNDERPOWERING as sub

let me clear this up

underpowering a sub by a substantial amount causes an amp to go into what is known as clipping clipping is also known as distortion both of these are VERY bad for subs and speakers

rms is it minimum/nominal power requirements if it says 1000rms you should ideally give it AT LEAST 1000rms

less power causes more heat more heat causes blown coils blown coils give dead sub

more power causes less heat less heat keeps your sub alive

its as simple as that

It is fine to underpower a sub as long as you dnt try to make it louder by putting the gain right up,then straining the amp to amplify the sound

If you set gain correctly it shouldnt clip.Another way to prevent clipping is to get a capacitor to prevent voltage drops

no need in i take it you didnt read my post regarding UNDERPOWER a sub,mean that to me is out of order we are all here to try help and you come on with comments likes that.

more power would acauly cause more heat,speakers well anything in life is given a safety factor when being design so if a speaker is 250 rms it acauly could take a lot more that is why it seems fine to overpower it.But say at the safety factor it is 250 rms but it can realy take 350rms and you overpower it to 400 rms then you are going to slowly destroy the cone/coils.

There has been a mix opinon on overpowering and underpower speakers a think in a way each one is good and bad unless set up correctly

Edited by trendyscotsman12

jbl subs etc are pretty good for theree value

pioner are very good bud

  • Author

i got a good deal with the amp, got it for 100 brand new when it sells in shops for over 200 pounds currently, and i bought it over a year ago.

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