I Blew IT!!

[Kfra315 10+ year member]

So i was on my home yesterday beatin down the highway when all of the sudden all the bass dissapeared. Next I began to smell the funky *** burning smell and my first thoughts were "Oh Oh". Well I was hoping it wasnt my amp and upon checkin it still had read outs and everything and I didnt notice any smoke. But then I popped my trunk and go a full wiff of just how funky a Type R is when its been fried. My question is how could this happen? My amp puts out 900w and I only had the the gain about 50-60 percent the whole time so I'm sure the R could take it. Thanks to Tapout I got the sub with a warranty from Bestbuy so it'll be getting it replace but I wanna make sure this doesnt happen again.

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[lilmaniac2 5,000+ posts]

amp dumping some nasty dc?

 

[jdawg 5,000+ posts]

bass boost cranked?

 

[shortyg83 10+ year member]

Where you playing a bass test or just listening to music?

 

[liftedcj7on44s 10+ year member]

lol you gave it a haircut! Clipping FTL!!

 

[Mitch86 5,000+ posts]

I'm guessing bass boost or gains are set too high. Turn off the bass boost and use a DMM to set your gains. (tutorial is in the amp section of this forum)

 

[snoopdan 5,000+ posts]

ever heard of a subsonic filter ? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[Kfra315 10+ year member]

bass boost cranked?

Dont use bass boost. Its completely off

Where you playing a bass test or just listening to music?

Music. Never tried a bass test.

lol you gave it a haircut! Clipping FTL!!

Is it possible for the amp to be clipping when the gains are no higher than 60%?

I'm guessing bass boost or gains are set too high. Turn off the bass boost and use a DMM to set your gains. (tutorial is in the amp section of this forum)

No BB and I dont have a DMM. Gains are no higher than 60%

ever heard of a subsonic filter ? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

I think my LPF is set to 45-50Hz. I've have to check on that one.

 

[dragnix 5,000+ posts]

I think my LPF is set to 45-50Hz. I've have to check on that one.

LPF and Subsonic filter are two very different //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Kfra315 10+ year member]

LPF and Subsonic filter are two very different //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

Elaborate on this. I thought they were essentially the same. My amp says subsonic filter on it

 

[Chevyaudio 5,000+ posts]

The subsonic filter is a HPF (high pass filter). You usually set this filter at or around the F3 of your enclosure. Or a few Hz under tuning if you do not know the F3. The SSF essentially filters out the subsonic material or material that is to far under the tuning frequency that could possibly damage your driver.

 

[bdavies11 10+ year member]

Sounds to me like you simply overpowered it. 900wrms to a sub thats rated for 500 is a bit over kill, especially in a ported box. Even with your gains at 60% ill bet your amp is pushing close to its full unclipped potential. I know everyone says the R can handle more power than its rated for and so forth but i'm sure theres a reason why alpine recommends no more than 500. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[liftedcj7on44s 10+ year member]

yes its possible to clip an amp even if the gains are set at a minimum, if you dont use your head and go crazy with the volume knob then no matter where the gain is set it can clip.

 

[audioholic 5,000+ posts]

The gain knob is not a percentage thing, in the right (or wrong) situation you can clip the amplifier even while the gains are set to their minimum.

You can get 900w out of that amp without turning the gain all the way up.

 

[Kfra315 10+ year member]

The subsonic filter is a HPF (high pass filter). You usually set this filter at or around the F3 of your enclosure. Or a few Hz under tuning if you do not know the F3. The SSF essentially filters out the subsonic material or material that is to far under the tuning frequency that could possibly damage your driver.

Well my subsonic filter was set to 20Hz. Thats what was recommended on the forum since my box is tuned to 32

Sounds to me like you simply overpowered it. 900wrms to a sub thats rated for 500 is a bit over kill, especially in a ported box. Even with your gains at 60% ill bet your amp is pushing close to its full unclipped potential. I know everyone says the R can handle more power than its rated for and so forth but i'm sure theres a reason why alpine recommends no more than 500. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

I'm wondering the same thing. My assumption for them being conservative on the rating is so they have a way out of covering blown subs. But I must say they are a lot of people on this forum running R's with more power for a while without having a problem so I think i might be user error:*******:

yes its possible to clip an amp even if the gains are set at a minimum, if you dont use your head and go crazy with the volume knob then no matter where the gain is set it can clip.

Neva that. I thought it was from turning your gain up to high to compensate for your amp not having enough power for your sub.

The gain knob is not a percentage thing, in the right (or wrong) situation you can clip the amplifier even while the gains are set to their minimum. You can get 900w out of that amp without turning the gain all the way up.

Percentages are these easiest way I can think to explain it. Essentially what I'm sayin is I didnt slam the gain all the way to get more output from the sub.