Hi, My sub setup is as is:
1 JL 12" in a sealed box that im pretty sure is too small for it. Check out my gallery.
1 alpine 450w

I dont think im getting enough punchy bass drum out of it. I hear alot of the drum reverb and it just sounds terrible. Also the bass guitar could use some punch. Anyone care to explain the tuning adjustments? It has 3 adjustment screws on it. one is gain, not sure about the other 2 atm.

thanks.

 

First off your gain should be set correctly with a DMM-that could be part of it.

One of the adjustments is probably the crossover-set this on LowPass at around 80 Hz or so.

The other adjustment-Im not sure. bass boost maybe? Bass boost is the devil-turn it all the way down.

What are the adjustments labeled?

 

They are: gain, Bass eq and lp filter

sorry but whats a dmm?

 

DMM-Digital Volt Meter.
Check out this link-it has a little write up of how to properly set your gains
https://www.f150online.com/forums/sh...onnect+speaker

The LP Filter adjustment should be in the 80Hz region or so-its a good starting point. You can mess around with it untill you get a sound you like. You'll usually see it set somewhere between 50-100Hz.

Bass EQ-Im assuming this is a bass boost. I pretty much always set this at 0 (all the way down) It just sounds so much cleaner without it. But you can mess around with it and see where you like it best.



Is the box sealed up good and everything for sure?
What model is the sub (W1, W3, etc??) and how much volume do you have in the box.
Not a setting on the HU is it?

 

whoops i know what a multimeter is lol my bad

im going to try that test you linked me to, thanks man

Yes the box is sealed, got a layer of herculiner on the outside of it.
In simple man's terms could you tell me what LP filter is and gain?

 

Haha, I happens to everyone. I guess some people call it different things. I was trying to say 'multimeter' but I couldnt think of it

That herculiner MIGHT not be sealing it enough. Hold you ear up to the seams to make sure no air is leaking out that you can hear. If it is, silicone the inside joints up.

A LowPass (LP) filter is a type of crossover that filters out frequencies above a certian point. Lets say your lowpass filter is set at 80 Hz. In this case, all the frequencies BELOW 80Hz would be played through the speaker, and everything ABOVE 80Hz would be filtered out, and not played through the speaker. However, crossovers also have slopes (12db, 18db, 24db etc) that is on the side of the set point that is filtered out. It is a slow dropoff of the frequencies. This way its not like the speaker would stop playing EVERYTHING above 80 hz, like 85hz. Those frequencies are just dropped off more and more untill they are pretty much not there. The 12db, 18db, 24db etc describes the severness of the dropoff. A 12db slope will be 12 decibles lower each octive, than the next. So your 80hz LP filter with say an 18 db slope will play full on from 80 hz on down, but once it gets to 80 hz, it will start to drop and will be 18 db down on teh first octive, 36 db down on the second octave, and so on.
Confused yet? lol


The gain is a setting that matches the voltage of the incoming signal to the amp (which would be your cd players RCA voltage) and sets it equal to the amp. This prevents clipping and damaging the speaker, and will usually match the output well with your volume (say your volume is 1/4 of the way up, and you speakers are only playing at 1/4 of thier volume-you wouldnt want the sub playing full on by then, so you can adjust this with the gain by turning it down)

Now, lol, hopefully I didnt confuse you even more. Im not the best at explaining things. If you need I will try to clarify parts of that more for you

 

Thanks alot man. Yeah I get the basics of it now. I think my gain is all the way down right now, its just too loud, drowns out the rest of the music. So i guess I need to adjust the LP filter lower to give it less sound coming out that is the drum reverb.

Appreciate it.