audioque hdc3 12 on a nine.1 and something is wrong...

[DJL 10+ year member]

so i have my hdc3 wired to 1ohm on my nine.1 elemental design amp. well the sub was broken in for over a period of 10 hours. the box is about 2.5cubes before displacement and tuned @ 37...but for some reason it only seems to get loud when i turn the radio all the wayt up. theres like no middle ground..either you really hear no base or you have to crank it up...i know the am is small but this sub does have a rms of 1000 so i should be okay for the most part...could it just be my headunit casung this problem? i mean the 4 ch works like a charm...any info would be great...also this is al in a 2002 honda accord...anything that you think will help or is the problem please let me know

What do you have your subsonic and lpf filters set at?

 

[michaellane 5,000+ posts]

they are set at about 1/3 of the way up. this was what i was advised to do...is this incorrect? it was the sundown guy on here...i think his last name is fuller?

 

[budahbuddy803 10+ year member]

What do you have your subsonic and lpf filters set at?

good question. You got more responses than just one man //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[budahbuddy803 10+ year member]

they are set at about 1/3 of the way up. this was what i was advised to do...is this incorrect? it was the sundown guy on here...i think his last name is fuller?

subsonic should be right about at the tuning of your box.

LP should be around 80hz

 

[michaellane 5,000+ posts]

okay i will check that but i think the LP is right at 80...the sub sonic may be a little higher than the box... if these are set correctly what else could it be?

 

[budahbuddy803 10+ year member]

okay i will check that but i think the LP is right at 80...the sub sonic may be a little higher than the box... if these are set correctly what else could it be?

i dont know, but i do know if the subsonic is higher than tuning and the lp is 80 or below that doesnt leave very many frequencies for that sub to be hitting. I guess a 40hz range is what most subs hit anyways... i dont know. hopefully someone smarter will chime in.

 

[michaellane 5,000+ posts]

anything else?

 

[michaellane 5,000+ posts]

well would it be better to tune the lp to a little lower freq?

 

[microhaxo 10+ year member]

LPF should be set between 75 and 100. Lower than 75 and you are cutting out a lot of mid bass.

Multimeter is absolutely needed.

50hz -3db sin wave on cd

Follow these steps:

1.

Check how many volts your amp is putting out by playing the 50hz sin wave at listening volume with the multimeter.

watts = volts^2 / ohm - this is not the actual equation for it (real one involves a lot more variables) but it is a general rule to follow.

2.

Now check how many volts its putting out inbetween 0 and listening volume, so about half way.

3. Check your RCA volts from the deck by unplugging them from the amp and setting your DMM to AC~ touch the neg to the ground on the amp and the pos to the tip of the rca, do this at listening volume with the 50hz tone.

Things to never do:

Never use bass boost on amp, adds tons of distortion.

Never turn the bass or sub level all the way up on the deck, it adds tons of distortion. Keep everything FLAT.

Never play 0db bass songs if amp tuned with -3db sin wave, you will clip the hell out of your amp and possibly blow the sub.

So i've given you all the tools needed, figure out whats wrong with her.

 

[michaellane 5,000+ posts]

so my sub control on the deck should always be set to zero? is this correct?

 

[microhaxo 10+ year member]

well if it is 0 out of 5 then that's weird..

normally its like -5 to 5, in this case 0 would be the better option.. Flat

what deck is it?

 

[michaellane 5,000+ posts]

i have the eclipse 5435 and its not actually called the sub control...i cant rem. whats its called but it goes from 0--6

 

[Pyro_By_Nature 5,000+ posts]

--------------------------------------------------------------------------------------------------------why do you think its the Hu? can u give me more info please...

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well i have a mp3 player hooked up to the aux input on my eclipse 5435...is that what you mean?

No I mean you have to completely bypass the head unit and use the MP3 player as a source directly to the amp.

 

[Pyro_By_Nature 5,000+ posts]

Also your subsonic filter doesn't have to be at box tuning, it can be a little under.

 

[DJL 10+ year member]

Set your subsonic at 28-30 and lpf 80-100