Too much muffled bass


Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
Recently I just had a kicker 12" DVC CompR with a kicker dx series 1200w amp installed. The problem I'm having is the I listen to a good bit of rock/metal and the "kick" or "thump" sound of the bass drum is really muffled and hard to distinguish. I've spoke to a few people and they said that the muffled noise comes from the seats but even with the seats down, the response still isn't quite that great. Other music with lots of bass like rap or dub step sounds good, lots of bass. I don't know if it's the brand, woofer, amp, box or if all 4 are the problem. I own a 2015 VW Jetta and there is like 15 cubic feet of room in the trunk. Help?!

 

Jeffdachef

Gunz That Turn on Nunz
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Feb 5, 2013
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South Coast Metro, CA
Recently I just had a kicker 12" DVC CompR with a kicker dx series 1200w amp installed. The problem I'm having is the I listen to a good bit of rock/metal and the "kick" or "thump" sound of the bass drum is really muffled and hard to distinguish. I've spoke to a few people and they said that the muffled noise comes from the seats but even with the seats down, the response still isn't quite that great. Other music with lots of bass like rap or dub step sounds good, lots of bass. I don't know if it's the brand, woofer, amp, box or if all 4 are the problem. I own a 2015 VW Jetta and there is like 15 cubic feet of room in the trunk. Help?!
Its most likely the enclosure the subwoofer is in. If you just bought some random pre made box, it'll generally sound like sh*t. Upload a picture of your setup on IMGUR.com and on the left side there's BB code for forum images on the right side, copy that link and post on here.

 

Wubwub176

Junior Member
Nov 12, 2015
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Pittsburgh Pa
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  • #3
Its most likely the enclosure the subwoofer is in. If you just bought some random pre made box, it'll generally sound like sh*t. Upload a picture of your setup on IMGUR.com and on the left side there's BB code for forum images on the right side, copy that link and post on here.
It's a 1.2 cubic foot box that I got from best buy. It's just a general box, would getting an actual kicker box be the right way to go? I was planning on buying one but I'm a little tight on cash right now. I'm gonna look up some boxes now, unfortunately I don't have any pics of my system and its raining right now so I'll upload one at a later time

 

Louisiana_CRX

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It's a 1.2 cubic foot box that I got from best buy. It's just a general box, would getting an actual kicker box be the right way to go? I was planning on buying one but I'm a little tight on cash right now. I'm gonna look up some boxes now, unfortunately I don't have any pics of my system and its raining right now so I'll upload one at a later time
Rear fire your sub ...set the subsonic on the amp at 20hz....turn bass boost on amp to 0....set gain at half...set the amp crossover at 85hz... On your deck...make sure sub crossover is set on bypass on or through You dont want to run 2 crossover before the sub...Do this and listen to it and let us know how it sounds ...

 

adulbrich

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Yeah, I'm guessing it's a prefab ported box, which is junk.

 

Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
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It's a DX series, it has gain, crossover and boost. That's it. It also has a low or hi Input button

 

---------- Post added at 09:32 AM ---------- Previous post was at 09:32 AM ----------

 

It's a sealed box but I do have a ported one

 

Wubwub176

Junior Member
Nov 12, 2015
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Pittsburgh Pa
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Rear fire your sub ...set the subsonic on the amp at 20hz....turn bass boost on amp to 0....set gain at half...set the amp crossover at 85hz... On your deck...make sure sub crossover is set on bypass on or through You dont want to run 2 crossover before the sub...Do this and listen to it and let us know how it sounds ...
It only has gain, crossover and boost. It has a hi or low input button

 

---------- Post added at 09:36 AM ---------- Previous post was at 09:36 AM ----------

 

Yeah, I'm guessing it's a prefab ported box, which is junk.
It's a 1.2 cubic foot sealed box. I have a ported one but it doesn't sound any better

 

adulbrich

Lock up your daughters!
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Ames, Iowa
It's a 1.2 cubic foot sealed box. I have a ported one but it doesn't sound any better
Then I'm surprised. Are the walls super thin and is it flimsy? Not a whole lot you can mess up with a sealed box. The ported prefabs are notoriously awful, which is why I assumed that's what the problem was.

Try loading the subs off of different sides

 

Louisiana_CRX

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It only has gain, crossover and boost. It has a hi or low input button 

---------- Post added at 09:36 AM ---------- Previous post was at 09:36 AM ----------

 

It's a 1.2 cubic foot sealed box. I have a ported one but it doesn't sound any better
Set those 3 like I said then...Subsonic only helps reduce really low end unaudible sounds and helps ported box subs from bottoming out ...make sure your not using a crossover in your deck ...ifv so the sound is filtered before it ever hits the amps...in some Pioneers you can only turn the sub on or off..I go through the rear RCA's on those...

 

Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
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Set those 3 like I said then...Subsonic only helps reduce really low end unaudible sounds and helps ported box subs from bottoming out ...make sure your not using a crossover in your deck ...ifv so the sound is filtered before it ever hits the amps...in some Pioneers you can only turn the sub on or off..I go through the rear RCA's on those...
Give me a second I'm loading pictures and will tell you exactly what's everything is at on the head unit

 

Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
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Then I'm surprised. Are the walls super thin and is it flimsy? Not a whole lot you can mess up with a sealed box. The ported prefabs are notoriously awful, which is why I assumed that's what the problem was.
Try loading the subs off of different sides
It's 1/2" MDF with a fiber wrap on the outside. It's rear facing and its on the driver side

 

Louisiana_CRX

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It's 1/2" MDF with a fiber wrap on the outside. It's rear facing and its on the driver side
If its fiberglassed wrapped it should be pretty durable...but 1/2 by itself would flex and cause weird noises in sound...I do a mine out of 3/4 MDF or Birch

 

Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
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Give me a second I'm loading pictures and will tell you exactly what's everything is at on the head unit
Imgur: The most awesome images on the Internet

Imgur: The most awesome images on the Internet

Imgur: The most awesome images on the Internet

Sub control is 100hz +1 -12

Sub is obviously on

HPF setting is 100hz

Bass boost is 0

EQ is powerful

SLA is +2

Balance and fader are both 0, untouched

I had an additive audio version 4 12" and I kind of learned some stuff with that but I'm still new to car audio and audio in general. I know the basics and some trouble shooting but not much beyond that

 

Jeffdachef

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It's a 1.2 cubic foot box that I got from best buy. It's just a general box, would getting an actual kicker box be the right way to go? I was planning on buying one but I'm a little tight on cash right now. I'm gonna look up some boxes now, unfortunately I don't have any pics of my system and its raining right now so I'll upload one at a later time
No those kicker boxes are not good either. Either build your own or have someone build it for you. Whats your crossovers on the amp and head unit set to?

 

Wubwub176

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Nov 12, 2015
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Pittsburgh Pa
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No those kicker boxes are not good either. Either build your own or have someone build it for you. Whats your crossovers on the amp and head unit set to?
Sealed 1/2" fiberglass wrapped. The crossover on the amp is 200 and the head unit High pass filter is 100hz

 

Louisiana_CRX

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Imgur: The most awesome images on the Internet

Sub control is 100hz +1 -12

Sub is obviously on

HPF setting is 100hz

Bass boost is 0

EQ is powerful

SLA is +2

Balance and fader are both 0, untouched

I had an additive audio version 4 12" and I kind of learned some stuff with that but I'm still new to car audio and audio in general. I know the basics and some trouble shooting but not much beyond that
If you use the decks crossover ..you can set the sub crossover to flat on the amp or bypass ...set the deck at 80hz for subwoofer...turn crossover off on the amp...you dont want 2 crossovers (amp & deck) because they most likely wont match plus your slopes and phase start going out of whack

 

Wubwub176

Junior Member
Nov 12, 2015
27
0
Pittsburgh Pa
  • Thread Starter Thread Starter
  • #17
If its fiberglassed wrapped it should be pretty durable...but 1/2 by itself would flex and cause weird noises in sound...I do a mine out of 3/4 MDF or Birch
It was a box I got at best buy which I know is not the best but it was cheap. Probably why it doesn't sound good. I had a huge box that weighed easily 15 pounds it was 7/8" MDF with a port big enough for me to fit my whole arm up to my shoulder haha. 3 cubic feet of inside space

 

Wubwub176

Junior Member
Nov 12, 2015
27
0
Pittsburgh Pa
  • Thread Starter Thread Starter
  • #18
If you use the decks crossover ..you can set the sub crossover to flat on the amp or bypass ...set the deck at 80hz for subwoofer...turn crossover off on the amp...you dont want 2 crossovers (amp & deck) because they most likely wont match plus your slopes and phase start going out of whack
Is the deck cross over a better way to get sound or the amp crossover?

 

---------- Post added at 09:58 AM ---------- Previous post was at 09:57 AM ----------

 

If you use the decks crossover ..you can set the sub crossover to flat on the amp or bypass ...set the deck at 80hz for subwoofer...turn crossover off on the amp...you dont want 2 crossovers (amp & deck) because they most likely wont match plus your slopes and phase start going out of whack
Plus my back seats prove to be one hell of a muffle causer

 

Jeffdachef

Gunz That Turn on Nunz
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Feb 5, 2013
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South Coast Metro, CA
Imgur: The most awesome images on the InternetImgur: The most awesome images on the Internet

Imgur: The most awesome images on the Internet

Sub control is 100hz +1 -12

Sub is obviously on

HPF setting is 100hz

Bass boost is 0

EQ is powerful

SLA is +2

Balance and fader are both 0, untouched

I had an additive audio version 4 12" and I kind of learned some stuff with that but I'm still new to car audio and audio in general. I know the basics and some trouble shooting but not much beyond that
Your EQ should not be at powerful Keep it at flat and rest your gains again its completely set wrong and the EQ will screw up your bass and kill your subs All bass frequencies should be flat. Anything 80hz and above on the EQ can be tampered with to get the sound you want but anything underneath that frequency is forbidden. SLA should be at 0. Low pass filter on the amp should be wide as in the higest it can go. You want to use the low pass filter on the head unit set to 80hz. Low pass cuts off the frequencies above so it blocks out vocals from the subs. However, if you set it too low like you have with your amp ATM, you are missing out on all the kick drums aka midbass from rock and metal.

Gains should be reset set again properly after these changes. Volume knob on the head unit should be as high as your speakers can get without distorting. Then play a bassy song and slowly turn up your gain. When you hear the sub start changing to a different pitch, then you need to back up the gain a bit. OR if it stops getting louder, that means you are at clipping(dangerous levels) back it down slightly if that happens.

 

Jeffdachef

Gunz That Turn on Nunz
5,000+ posts
Feb 5, 2013
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South Coast Metro, CA
Your EQ should not be at powerful Keep it at flat and rest your gains again its completely set wrong and the EQ will screw up your bass and kill your subs All bass frequencies should be flat. Anything above 80hz can be tampered with to get the sound you want but underneath that is forbidden. SLA should be at 0. Low pass filter on the amp should be wide as in the higest it can go. You want to use the low pass filter on the head unit set to 80hz. Low pass cuts off the frequencies above so it blocks out vocals from the subs. However, if you set it too low like you have with your amp ATM, you are missing out on all the kick drums aka midbass from rock and metal.
Gains should be reset set again properly after these changes. Volume knob on the head unit should be as high as your speakers can get without distorting. Then play a bassy song and slowly turn up your gain. When you hear the sub start changing to a different pitch, then you need to back up the gain a bit. OR if it stops getting louder, that means you are at clipping(dangerous levels) back it down slightly if that happens.
It was a box I got at best buy which I know is not the best but it was cheap. Probably why it doesn't sound good. I had a huge box that weighed easily 15 pounds it was 7/8" MDF with a port big enough for me to fit my whole arm up to my shoulder haha. 3 cubic feet of inside space
15lbs is not much for a 10 inch box. That box you have already looks too small to be honest. Pre-made boxes are generally garbage and they lie on specs all the time.

 

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