torn spiders?

[cotjones 10+ year member]

his HU has ouput voltage of 4V. and his gain is set to about 3V. ...he had it set lower because he had not upgraded front-stage and wanted to hear his music clearly... there ya go he isn't using the full potential of the amps and thus not getting 1000 watts out of either of them

 

[cotjones 10+ year member]

so let me get this straight.
amp is rated at 1000w RMS, gains "set to 3\4". so how do you know the gain is set at the correct voltage of the headunits pre-out? did you read the manual? did you match it to the listed voltage from the headunit? did you use a multimeter and the gain setting formula to see how many watts it actually puts out? does not sound like you did?

a sub that should handle 1500w. lets see now. i see the type x listed as 500~1000w RMS, do you see that too? and what? in an oversized box too? is that supposed to mean something? because from what i understand, having a larger box than recommended (again, recommended sealed enclosure size is .65~1.25 cubic feet, about .5 cubes too big) lowers the mechanical power handeling of a speaker. thus, the spider is moving too far for the size of the box and power it is getting. that 500~1000 watt power rating means, larger box size = lower power suggestion, and vice versa.

so a .65 cubes, they recommend closer to 1kw. and the 1.25 range, they recommend close to the 500w range.

so it looks to me like your buddy is giving them twice the power then they are recommended to recieve in that specific enclosure.

happy days.

ok i never said 3/4 gain... i said less than 3/4 they were at 3/4 when he first put them in and they were WAAAY over-powering his wimpy fronts , the second time i heard it he had set the gains lower, i was under the impression bigger box raises mechanical handleing not lowers it.... nvm i see now... good point

 

[ngsm13 5,000+ posts]

his HU has ouput voltage of 4V. and his gain is set to about 3V. ...he had it set lower because he had not upgraded front-stage and wanted to hear his music clearly... there ya go he isn't using the full potential of the amps and thus not getting 1000 watts out of either of them

YOU DON'T KNOW THIS, WHAT DID YOU MEASURE IT WITH?!?!?!?!?!?

Funny thing is, you favorite tool... the one you used to measure sound quality and cancellation last time... would come in REAL handy here...

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

nG

 

[ngsm13 5,000+ posts]

ok i never said 3/4 gain... i said less than 3/4 they were at 3/4 when he first put them in and they were WAAAY over-powering his wimpy fronts , the second time i heard it he had set the gains lower, i was under the impression bigger box raises mechanical handleing not lowers it.... nvm i see now... good point

Yet again, showing your complete and utter ignorance of the +12v world.

Here, some sincer help.

Go here... come back when you've read the ENTIRE site.

http://www.bcae1.com

Please PLEASE PLEASE!!!!

nG

 

[cotjones 10+ year member]

so let me get this straight.
amp is rated at 1000w RMS, gains "set to 3\4". so how do you know the gain is set at the correct voltage of the headunits pre-out? did you read the manual? did you match it to the listed voltage from the headunit? did you use a multimeter and the gain setting formula to see how many watts it actually puts out? does not sound like you did?

a sub that should handle 1500w. lets see now. i see the type x listed as 500~1000w RMS, do you see that too? and what? in an oversized box too? is that supposed to mean something? because from what i understand, having a larger box than recommended (again, recommended sealed enclosure size is .65~1.25 cubic feet, about .5 cubes too big) lowers the mechanical power handeling of a speaker. thus, the spider is moving too far for the size of the box and power it is getting. that 500~1000 watt power rating means, larger box size = lower power suggestion, and vice versa.

so a .65 cubes, they recommend closer to 1kw. and the 1.25 range, they recommend close to the 500w range.

so it looks to me like your buddy is giving them twice the power then they are recommended to recieve in that specific enclosure.

happy days.

i think you solved it i didn't think of that before... thank you!

 

[m4i2k2e2 10+ year member]

well i am saying he is not even getting 2000 out of them, if that be the case... clipping shouldn't be an issue

how did he set the gains? did he do it by ear or bust out the old DMM?

 

[cotjones 10+ year member]

Yet again, showing your complete and utter ignorance of the +12v world.
Here, some sincer help.

Go here... come back when you've read the ENTIRE site.

http://www.bcae1.com

Please PLEASE PLEASE!!!!

nG

i cannot make you do anything but i would ask you nicely not even to read my threads anymore because you haven't done much but tell me i don't know stuff and i could deal without it...

 

[Immacomputer 10+ year member]

his HU has ouput voltage of 4V. and his gain is set to about 3V. ...he had it set lower because he had not upgraded front-stage and wanted to hear his music clearly... there ya go he isn't using the full potential of the amps and thus not getting 1000 watts out of either of them

Setting it to 3v IS setting it HIGHER (read: more power) than you should if your headunit is putting out a 4v signal. It's also too bad you're just assuming all these things too. Again, you're further proving the point squeak made at the beginning of this thread. You ask for our advice and knowledge and then debate with us trying to prove us wrong. My God, you're pathetic.

 

[cotjones 10+ year member]

how did he set the gains? did he do it by ear or bust out the old DMM?

i'm not certain but i think the amp has input voltage settings on the gain knob...

 

[Immacomputer 10+ year member]

i'm not certain but i think the amp has input voltage settings on the gain knob...

Didn't you JUST say that his gain was set to 3v? Now that it has been said that this was higher than what it should be set to, you "are not certain". Hmmm... is that because you were wrong and made up shit to try to make us think you were correct? It's too bad when you make shit up, you only make yourself look more like an idiot.

 

[m4i2k2e2 10+ year member]

i'm not certain but i think the amp has input voltage settings on the gain knob...

do you mean they print the numbers on the gain knob?

if so, thats not something you go by. the voltage of your HU pre amps will change this say if they are 2.5v or 4v, that changes the voltage you need to set your gain at. correct me if im wrong guys. but, i think thats true.

you need to take a DMM, do the math. then set accordingly. there is a gain setting tutorial.

also like stated before, depending on the size of the box the power handling will change.

 

[its_bacon12 10+ year member]

well i am saying he is not even getting 2000 out of them, if that be the case... clipping shouldn't be an issue

do you understand what theyve been telling you? if you clip an amp it will most likely put out more than its rated power, thus the subwoofer getting more power but its not a clean sine wave its clipped because the crest and troughs are essentially "clipped" off making it flat rather than curved.

clipping = bad... clipping also = overdriving amplified which = subs get more dirty power = blown subs

therefore clipping = blown subs

 

[cotjones 10+ year member]

Setting it to 3v IS setting it HIGHER (read: more power) than you should if your headunit is putting out a 4v signal. It's also too bad you're just assuming all these things too. Again, you're further proving the point squeak made at the beginning of this thread. You ask for our advice and knowledge and then debate with us trying to prove us wrong. My God, you're pathetic.

yes but when he isn't turning the volume all the way up the higher volage input only means that he reaches higher levels of power quicker so in other words with his stock speakers he can only turn the volume up to about 50% without blowing them so to get the sound he wants out of his subs he would have to double the gain... meaning that if he wanted to get 1000w out of 2V. (50%) of max output voltage he would have to set gain to 2V

 

[cotjones 10+ year member]

do you mean they print the numbers on the gain knob?if so, thats not something you go by. the voltage of your HU pre amps will change this say if they are 2.5v or 4v, that changes the voltage you need to set your gain at. correct me if im wrong guys. but, i think thats true.

you need to take a DMM, do the math. then set accordingly. there is a gain setting tutorial.

also like stated before, depending on the size of the box the power handling will change.

that is correct... but he knows the output voltage of th HU... 4V

 

[Immacomputer 10+ year member]

therefore clipping = blown subs

That's not always true. I clip the hell out of my amp but my sub can handle the extra power just fine. It stays within thermal and mechanical limits so there is no damage. The amp does heat up if I run it full tilt with some heavy bass after about 45 minutes or so.

Subs blow from being overdriven. Whether that means the coils burned up or you pushed it beyond it's mechanical limits. The enclosure will also have an effect on these limits. As long as you keep the limits of the speaker contained, the type of signal makes no difference -- whether it's square or a perfect sine wave.