amp help

[bradshaw1759]

could be a bit of a noob question lol basically ive alway had a sub and amp in my car but they have always come together as a pair.now i found a jbl sub for 15quid but its got no amp so im gunna have to find one. my question is does the amp wattage have to be the same or bigger than the sub ie the sub im getting is 1000watts so will i need a 1000,1200 etc amp any help would be great thanks

 

[Dink]

is that a 1000w Peak or RMS?

as that makes a hell of a difference.

rule of thumb is you get an amp with more power than the rating of the speaker

 

[bradshaw1759]

i dunno mate not got it yet ill try nd find out which

i always thought rms was the rating and the peak was what it would give when wired up to a sub is that wrong ??
shows how much i know lol

 

[Dink]

they are both ratings of the sub/amp/speaker

one is a bunch of marketing lies and the other is a true rating (RMS)

you can only match RMS ratings as other ratings are made up in different ways by different companys

 

[bradshaw1759]

right then so if the amp has more watts than the sub (rms) then it should be fine

 

[stoney182]

Goin from yur description of the the sub and price etc i personaly would say that this is a jbl sub from around 3-4yrs ago ( actualy says jbl and 1000w on the sub face) and its an peak and rms wbea round 275 iirc. i have two jbl gt12 series from around 9 yrs ago both around the 1000w peak and i used a bridge alpine 400w amp to power the both of them .... also cheap amps ie toxic and such like steer clear better quality ones are the better choice ( get second hand aslong as it works) i only paid £40 for my alpine one.

 

[Dink]

right then so if the amp has more watts than the sub (rms) then it should be fine

not quite as you need to know the "resistance" of the sub

take this amp it is a 300wRMS but only into 1 ohm and only 175wRMS into 4 ohms

where as this amp into 4 ohms is 350wRMS

 

[bradshaw1759]

good god this is compicated lol

 

[bradshaw1759]

its black and just says jbl in red mate

 

[stoney182]

so like this then?

if so its the old gt series like i have then if its a 12" then a 400w amp will be perfectly ok.

 

[bradshaw1759]

thats the one mate thanks alot have you had or know anyone who has had one of these if so whats it like any good?

 

[stoney182]

i personaly have ran 2 for the past 8 yrs never had a problem with them and you get better base tones out of them compared to the newer series as long as u have your amp set up right ( not full base and input levels like a chav) you can set them up brilliantly