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View Full Version : How do I stop blowing my subs?



eclipse3130
09-18-2012, 06:48 PM
I've had 2 alpine type r 10" subs in the past 4 months, and they have both blown out playing it heavy in 80 degree weather.. All gain settings are on max low and bass eq settings... Also have the rated RMS power on them.

mylows10
09-18-2012, 06:51 PM
gains and bass boost are at max ,is this correct

kushy_dreams
09-18-2012, 06:51 PM
learn how to set the gains properly, make sure electrical is solid, make sure the box is properly designed and make sure your music files arent clipped to **** and last.....NEVER EVER use bass boost

Chriszle
09-18-2012, 06:52 PM
If gain is at max, that is max fail.

SUNDOWNBITCH
09-18-2012, 06:52 PM
What amp did you have on them? And on the head unit what is the bass set on?

RangerDangerV2
09-18-2012, 06:53 PM
learn how to set the gains properly, make sure electrical is solid, make sure the box is properly designed and make sure your music files arent clipped to **** and last.....NEVER EVER use bass boost
unless you know what you are doing with it....

cyn
09-18-2012, 07:01 PM
sale or throw away all of your car audio equipment

Dirtrider4eva
09-18-2012, 07:03 PM
sale or throw away all of your car audio equipment

better yet just put a wrench between the positive and negative post of your battery and walk away.

soloXgt
09-18-2012, 07:03 PM
I've had 2 alpine type r 10" subs in the past 4 months, and they have both blown out playing it heavy in 80 degree weather.. All gain settings are on max low and bass eq settings... Also have the rated RMS power on them.

for those who can't read.....but does he mean turned all the way down??

cyn
09-18-2012, 07:05 PM
for those who can't read.....but does he mean turned all the way down??

No idea 3 poeple has asked this question to him with no reply

Villeza1
09-18-2012, 07:07 PM
unless you know what you are doing with it....

X2


for those who can't read.....but does he mean turned all the way down??

I thought the same thing. I think he does mean all the way down...

mylows10
09-18-2012, 07:10 PM
i'm guessing maxed out

eclipse3130
09-18-2012, 07:10 PM
Yes I meant they were on the lowest setting for gain and bass boost

eclipse3130
09-18-2012, 07:12 PM
And I am using an alpine mrx-m100 amp which provides 1000 wattsrms

Villeza1
09-18-2012, 07:12 PM
Yes I meant they were on the lowest setting for gain and bass boost

Hmm, how high is your output voltage from the H/U when you play the system?

mylows10
09-18-2012, 07:13 PM
ok so then you dont know how to properly set your gains i take it. the old or new type r's

NoLoud4U
09-18-2012, 07:13 PM
By low do you mean on the .2v side?

Villeza1
09-18-2012, 07:16 PM
By low do you mean on the .2v side?

Lol I was JUST thinking about that. He might have gotten confused.

eclipse3130
09-18-2012, 07:18 PM
Yes. 2v side my h/u at 15vthe constant and the new type r's yeah 1000I rms rated

---------- Post added at 04:18 PM ---------- Previous post was at 04:17 PM ----------

Sorry on mobile haha

NoLoud4U
09-18-2012, 07:19 PM
Yes. 2v side my h/u at 15vthe constant and the new type r's yeah 1000I rms rated

---------- Post added at 04:18 PM ---------- Previous post was at 04:17 PM ----------

Sorry on mobile haha

.2 is all the way up

Villeza1
09-18-2012, 07:21 PM
Yes. 2v side my h/u at 15vthe constant and the new type r's yeah 1000I rms rated

0.2v means max on the amp. It's in relation to the output voltage of the headunit. Meaning that the output voltage of the headunit is at 0.2v, so you match the preout voltage to the input voltage (gain). You need to check the RCA's with a DMM and find what the output voltage is of the H/U and match it with the input voltage (gain) on the amplifier.

Also since, mostly likely, you don't know what you're doing, I'd suggest turning the bass boost all the way down (0 db) and not tamper with it until you do some reading and find out what all the settings on your amplifier mean and how they function.

eclipse3130
09-18-2012, 07:21 PM
What's weird is it works perfectly at lower volumes still its just when I turn it up it sounds like a ruler is being slapped against my rear window

soloXgt
09-18-2012, 07:21 PM
:nono:

West
09-18-2012, 07:23 PM
What's weird is it works perfectly at lower volumes still its just when I turn it up it sounds like a ruler is being slapped against my rear window

Watch this in its entirety.
how to set amplifier gain with multimeter - YouTube (http://www.youtube.com/watch?v=JLvSgucNARs)
Do this every time you install a speaker or sub.
Thank me later

mylows10
09-18-2012, 07:23 PM
clipped to ****

eclipse3130
09-18-2012, 07:24 PM
Thought .2 was the lowest I don't remember the numbers exactly but its turned max lowest to the left which is on low gain. I just don't recall the numbers because im driving atm

Villeza1
09-18-2012, 07:25 PM
What's weird is it works perfectly at lower volumes still its just when I turn it up it sounds like a ruler is being slapped against my rear window

At low volume your H/U's output voltage is low, when you turn the volume up, output voltage goes up. If it goes past 0.2v (which obviously it did) then that's clipping. That noise you hear is distortion, distortion is a sign of clipping, clipping causes heat build up, heat causes death of your equipment.

West
09-18-2012, 07:26 PM
Thought .2 was the lowest I don't remember the numbers exactly but its turned max lowest to the left which is on low gain. I just don't recall the numbers because im driving atm

That is INPUT sensitivity man.
Its supposed to be the HIGHEST value that your deck gives the amp.

Villeza1
09-18-2012, 07:27 PM
Thought .2 was the lowest I don't remember the numbers exactly but its turned max lowest to the left which is on low gain. I just don't recall the numbers because im driving atm

Low would show a higher voltage i.e. 5v or in most cases 6v. The gain needs to match the headunit's max unclipped output voltage and nothing higher.

EDIT: Example, if you check your H/U's output voltage and it reads 3.4v, then you want to turn the dial at or a tad above 3.4v on the gain of the amplifier. Anything lower than 3.4v will be considered clipping.

West
09-18-2012, 07:30 PM
Installing speakers isn't like plugging in a toaster. You have to be somewhat educated on how to set things up before you begin. Not trying to make you feel bad, its just reality.

If you are willing to learn, then great.
If you are not willing to learn, go to an installer and have it done right.

eclipse3130
09-18-2012, 07:32 PM
Yeah well I look like an idiot cause im just responding to questions blinds while driving but I had the gain professionally tuned because I don't have a distortion detector and from there I turned it down even lower by a hair. I was just saying its on the lowest setting so you guys knoe that the gain isn't the issue. And the bass eq I didn't touch irt is on 0

West
09-18-2012, 07:35 PM
>.> A digital multimeter will cost you about 20$ from advanced auto, walmart, autozone etc.
Dont type and drive man...
If you are blowing woofers, then something is wrong with your system.
You professional did not give you a professional install...

eclipse3130
09-18-2012, 07:38 PM
Anyways I had the gain professionally set. Both times just want to know why my subs keep blowing and im not driving anymore

NoLoud4U
09-18-2012, 07:39 PM
Only one thing it could be. Your pro is a tard

eclipse3130
09-18-2012, 07:45 PM
So I guess I just got a crap faulty sub

Villeza1
09-18-2012, 07:54 PM
So I guess I just got a crap faulty sub

No, I think everyone is right about said "professional". Trust us, there's more guys on CA forums that are more knowledgeable than tards at local CA shops. Doesn't mean every shop has tards, just most of them.

Research how to do it correctly and everything should be good to go.

trumpet
09-19-2012, 10:44 AM
So I guess I just got a crap faulty sub

This will go a lot easier if you just accept that the amplifier is not set correctly, despite your claim that you paid for a "professional" tune. Your subs should never sound like "a ruler slapping" as you turn the volume up, and since you said they sound good at low volume this is a dead giveaway the gain is NOT set right.