Speakers Blowing
01-09-2007, 06:19 PM
#1
50 Watt CAFz'r
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Join Date: Jan 2007
Posts: 73
Speakers Blowing
I have a set of Hertz 6.5" component speakers running off of an alpine MRP-F240 and i love the sound but my problem is that i have blown 5 sets of them within a year. I do not understand why these are blowing because the amp is bridged to 100wats rms per channel and the hertz speakers are 100 rms so i figured i would never have a problem with them because they have a good power level.I just got my amp checked and it had some interconnectors blown but the guy said that that should not have been the source of blowing the speakers so i got a credit from hertz and are buying a better pair of the same size. I am just wondering if there is any settings that are wrong on my amp that is causing these speakers to blow or is there anyway i can preserve this new pair?
01-09-2007, 07:53 PM
#2
You haven't said what you have for subs or the rest of your system?
I don't mean to offend you, but a lot of people who have loud systems, play so loud that they can't tell they're driving into distortion by clipping.
I've done that, back when i had way too much power on the subs and rear, i kept on turning up the fronts until i fried coils. MTX replaced them once, but the dealer said that they would only replace them once.
Just a guess.
with my new system, so far I haven't hurt my MBQuart comps, with 125 rms on each. I turned down gains on the rear6x9's, so i can hear the door speakers more.
I don't mean to offend you, but a lot of people who have loud systems, play so loud that they can't tell they're driving into distortion by clipping.
I've done that, back when i had way too much power on the subs and rear, i kept on turning up the fronts until i fried coils. MTX replaced them once, but the dealer said that they would only replace them once.
Just a guess.
with my new system, so far I haven't hurt my MBQuart comps, with 125 rms on each. I turned down gains on the rear6x9's, so i can hear the door speakers more.
01-09-2007, 08:38 PM
#3
50 Watt CAFz'r
Thread Starter
Join Date: Jan 2007
Posts: 73
My system consists of:
Head Unit-Alpine CDA - 9831
Sub Amp-Alpine MRD-M605
Subs- 2 10" Hertz es 250
Speaker Amp MRP - F240
Front Speakers running off amp Hertz ESK 165.2
Rear Pillar Speakers - Alpine Plate Speakers
Anyway i take no offence to your comment because since i have an extend a cab truck i do not have room for big subs so i went for sound quality over heavy bass. The subs are loud enough so you can feel it a bit but it sounds amazing. It is really not overly loud compared to most of my friends units where the bass pretty much makes you sick and the speakers are distorting so much you can no longer even hear the lyrics. I am still no very experienced in car audio but to my ears i never heard any distortion and i even payed for proffessionals to listen and they said nothing was wrong but still the speakers blow so i have turned to you guys.
Head Unit-Alpine CDA - 9831
Sub Amp-Alpine MRD-M605
Subs- 2 10" Hertz es 250
Speaker Amp MRP - F240
Front Speakers running off amp Hertz ESK 165.2
Rear Pillar Speakers - Alpine Plate Speakers
Anyway i take no offence to your comment because since i have an extend a cab truck i do not have room for big subs so i went for sound quality over heavy bass. The subs are loud enough so you can feel it a bit but it sounds amazing. It is really not overly loud compared to most of my friends units where the bass pretty much makes you sick and the speakers are distorting so much you can no longer even hear the lyrics. I am still no very experienced in car audio but to my ears i never heard any distortion and i even payed for proffessionals to listen and they said nothing was wrong but still the speakers blow so i have turned to you guys.
01-10-2007, 02:51 AM
#6
You can have multiple issues causing the same failure. The speakers are dying because they are getting too hot. This means that you are giving them too much power, playing them too long at a sustained volume level or sending a clipped signal (distortion) into the speaker. In all cases (and more) this results in too much heat being created in the voice coils and poof you have sss (smelly speaker syndrome). If you have a sub, turn it 100% off, unplug the rca's and play the system again without it. Chances are that you are going to hear your speakers making sounds that do not sound that great. The sub is masking this sound out of the smaller speakers. The speakers will play this until they die.
It can be a distorted signal right out of the cd player. It can be coming from a incorrect gain setting on the amp. It can be a improper crossover point for the speakers. It can be a combination of any two of the three or all three. It can be the bass control cranked up on the cd player.
The root cause of the problem I hate to say is you. You are the one in control of the volume dial. You are the one in control of how the system is set up. You need to learn how to use the system properly is what is next to be done. Learn the capabilities and limitations of how the system works. Start by turning the bass control to zero, then turn the gain down (it is not a volume control). The music that you play if it is a burned copy may also be a culprit. Learn how to listen for distortion. Finally remember that a byproduct of producing power is heat. Apply that power to a speaker, you also get heat. Heat is the enemy here, you just need to figure out how to keep it in check.
It can be a distorted signal right out of the cd player. It can be coming from a incorrect gain setting on the amp. It can be a improper crossover point for the speakers. It can be a combination of any two of the three or all three. It can be the bass control cranked up on the cd player.
The root cause of the problem I hate to say is you. You are the one in control of the volume dial. You are the one in control of how the system is set up. You need to learn how to use the system properly is what is next to be done. Learn the capabilities and limitations of how the system works. Start by turning the bass control to zero, then turn the gain down (it is not a volume control). The music that you play if it is a burned copy may also be a culprit. Learn how to listen for distortion. Finally remember that a byproduct of producing power is heat. Apply that power to a speaker, you also get heat. Heat is the enemy here, you just need to figure out how to keep it in check.
01-10-2007, 07:44 AM
#8
Good point, I didn't think about low frequencies going to the front speakers, i just took it for granted.
Mid-bass speakers don't like sub frequencies. It's also a waste of power. If your using all the power the amp has for low frequencies, there is no headroom left for the highs and they will distort, hurting your tweeters. That's why i bi-amp my components.
There should be a hpf setting on the amp for the front speakers.
I like mine at 100 hz, 12 dB slope, so the blend well with the subs, but at least 70 Hz.
Mid-bass speakers don't like sub frequencies. It's also a waste of power. If your using all the power the amp has for low frequencies, there is no headroom left for the highs and they will distort, hurting your tweeters. That's why i bi-amp my components.
There should be a hpf setting on the amp for the front speakers.
I like mine at 100 hz, 12 dB slope, so the blend well with the subs, but at least 70 Hz.
01-10-2007, 04:06 PM
#9
50 Watt CAFz'r
Thread Starter
Join Date: Jan 2007
Posts: 73
Originally i had the hpf set at 100hz and the gain set to half but after the second set blown i turned the gain down to a quarter. How do i control the amount of heat the speaker is producing and how can i cool it?
