View Full Version : mb quart components

06-01-2007, 09:31 PM
i just installed a pair of mb qaurt components (pce 216) in my blazer and they sound amazing, but im runnin them off a alpine f-240 and have them bridged. so they are only seeing about 80 rms if that cuz the amp isnt turned up all the way.

the question i have is that when i turn my hu up to 26 or 27 (out of 35) the light in the crossover starts to glow preaty good, does that mean i am gonna blow somethin or is that just protecting the tweeter from blowing?

the reason i ask this is cuz they are rated at 130 rms each speaker and they are only gettin a lot less than that and this is happening

is it safe to just keep playing them at this level or should i turn the amp down???

06-01-2007, 09:49 PM
means tweeter protection is on- turn it down -try adjusting your gain first and then see what happens.

06-01-2007, 09:50 PM
i just tryed to turn it down but then they are not as loud at all, they sound like they are being run off the hu if i turn it down to where the light doesnt come on

06-01-2007, 10:16 PM
You need to set the gains so that the amp isnt clipping. You can play the speakers with the light on for a little bit, but not for a long time. You probabily need a bigger amp, that will give you the power to run them loud without sending a distorted/ clipped signal. Youd be surprized how much power component speakers need, and can handle. 100 clean watts per side should be the minimum to make shure they have the power they need without overdriving the amp.

06-01-2007, 10:33 PM
where is the attenuation pin set? it should have 3 levels 0, -3db and -6db

06-01-2007, 10:44 PM
it is at 0

should i change it to a lowwer setting

06-01-2007, 11:33 PM
I am no expert, but lets say you were sending them 100 watts than -3db would only send the tweeters 50 watts and -6db 25 watts I may be wrong try -3db first and give it a listen, if at the levels you want the light is still coming on try -6db your tweets are going to sound less bright though than at the same level as 0. Someone correct me if I am wrong please

06-02-2007, 02:54 PM
but wouldnt putting them on a negative setting make the light go on becuase the reason the light goes on in the first place is to protect the tweeter from over heating, so wouldnt that just make it light up even more???

i dunno but ill try setting it on a lower setting.

06-02-2007, 03:01 PM
no, one note not all crossovers have the same pin settings going -3db is going to protect the tweeter more if you were at 0 before

06-02-2007, 03:03 PM
Set your gains with a digital multimeter. If the output isn't what you desired, then get a bigger amp. Clipping kills.