reset gains to 3200 rms but doesnt seem louder, is my LPF too low?

[talon2nr7588 10+ year member]

today i reset my gains to accomadate my new alt. i set the gain to 80 Volts on my Colossus II and set the LPF(35hz- 250hz) at about a quarter of the way since it was almost all the way up when i had the amp putting out 1500 watts. THe amp should be putting out 3200 watts since it's constantly getting at least 12 volts, but it doesnt seem much mlouder than when it was only 1500. could it be that the LPF is set too low? is it okay to hear some of the music/words coming through the subs?

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[White Ram 10+ year member]

I dont think you want to hear words through your subs. Try resetting your low pass I believe.

 

[oglejust 10+ year member]

set it lower if ur hearing words

 

[casper97ta 10+ year member]

depending on the slope of your crossover you might hear faint voice. i take it you are running the amp at 1ohm? try playing with the LPF when you have it playing and see where you like it. ususally around 80hz is good.

 

[talon2nr7588 10+ year member]

depending on the slope of your crossover you might hear faint voice. i take it you are running the amp at 1ohm? try playing with the LPF when you have it playing and see where you like it. ususally around 80hz is good.

its running at 2 ohms. i'll have to re-check the lpf then. should i set the gain last, after i set the LPF,SSF,BASS EQ on the amp or first?

 

[helotaxi 5,000+ posts]

Set the bass EQ first, set it to 0. Then set the gain. Then set the filters.

 

[talon2nr7588 10+ year member]

Set the bass EQ first, set it to 0. Then set the gain. Then set the filters.

so are you trying to say to not use the bass eq on the amp?

 

[talon2nr7588 10+ year member]

You could be running into power compression ... Also, the gain setting tutorial is more about setting it up so you don't blow your stuff up. In many cases, you won't actually get the full potential from the amplifier ... Use the -3 dB test tones provided in the tutorial instead of 0 dB.

wont that clip? the subs are 2 15l7s. and they're rated 1000 rms but they can take more

 

[helotaxi 5,000+ posts]

Music almost never gets to 0dB. -3dB will allow you to get 2x the actual power from the amp with music.

And, yes, I was saying not to use the bass EQ. If you want more bass, turn up the gain. Same effect, more predictable result.

 

[talon2nr7588 10+ year member]

Music almost never gets to 0dB. -3dB will allow you to get 2x the actual power from the amp with music.
And, yes, I was saying not to use the bass EQ. If you want more bass, turn up the gain. Same effect, more predictable result.

what about -6db will that also put out more power? how severe will the clipping be if i set it with -3db and -6db tones?

 

[helotaxi 5,000+ posts]

If the music never gets to the level of the tone (almost impossible with a subsonic filter and lpf set relatively close) clipping is impossible.

 

[talon2nr7588 10+ year member]

so i should be good with lpf at 100hz and ssf at 26hz? so should i use the -3db tone or -6db tone? i just wanna make sure, i want to get the most power out of the amp. should the tone be the same as box tuning or 60hz?

 

[helotaxi 5,000+ posts]

50 or 60 Hz. Either should be fine.

 

[talon2nr7588 10+ year member]

i was told i would get more output if i use the 35 hz tone. since my box is tuned to that frequency

 

[BigOso 10+ year member]

The tuning freq of your box is not going to be your loudest frequency. Start testing roughly 5 htz above tuning and go up from there.