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complete lack of mid bass

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my current setup in a Octty Mk1 vRS

Alpine CDA 9853R

Rainbow 265 SLC Delux Components up fornt

Alpine 16.5 SPRs in the back

Rockford Fosgate 300 watt mono amp for SUB

Rockford Fosgate 10" punch Sub

crossover settings

front above 63 Hz on a 12 db slope and set -3db because the tweets are very bright

rear above 63 Hz on a 12 db slope

sub below 63 hz on a 12 db slope

i have load of treble and loads of bass but nothing in between any suggestions:thumbdwn:

Think there was a post many years ago about ho to improve the midbass. Think you have to cut away the plastic behind the speakers so the sound goes into the door creating a bigger enclosure.

my current setup in a Octty Mk1 vRS

Alpine CDA 9853R

Rainbow 265 SLC Delux Components up fornt

Alpine 16.5 SPRs in the back

Rockford Fosgate 300 watt mono amp for SUB

Rockford Fosgate 10" punch Sub

crossover settings

front above 63 Hz on a 12 db slope and set -3db because the tweets are very bright

rear above 63 Hz on a 12 db slope

sub below 63 hz on a 12 db slope

i have load of treble and loads of bass but nothing in between any suggestions:thumbdwn:

Have you sound deadened the doors, this makes a huge difference to the sound of amped up components, without it the door vibrates and acts to cancel out the speaker motion losing midbass mainly

my current setup in a Octty Mk1 vRS

Alpine CDA 9853R

Rainbow 265 SLC Delux Components up fornt

Alpine 16.5 SPRs in the back

Rockford Fosgate 300 watt mono amp for SUB

Rockford Fosgate 10" punch Sub

crossover settings

front above 63 Hz on a 12 db slope and set -3db because the tweets are very bright

rear above 63 Hz on a 12 db slope

sub below 63 hz on a 12 db slope

i have load of treble and loads of bass but nothing in between any suggestions:thumbdwn:

This is my suggestion based on what I understand from your statement, which basically is that you are running all your speakers but the sub from your HU.

Now...

You're not running a line-array in your car, it's an in-car entertainment system.

Your front components crossover settings need to be changed. Right now, from what you say, you are basically trying to run 63Hz & above out of the tweeters...that will never work. Your woofer is capable of reproducing frequencies from 30Hz upto about 10KHz. Set your crossover settings for the front higher so that you get more out of your front drivers. Try setting at 10KHz and see what you get. Your tweeter will handle frequencies above 10KHz and not below.

Also, you have an Alpine headunit, and that comes with a 3-band EQ. You can play with the settings on that, set the center frequency (band) and boost or cut how you wish.

For your rear full-range speakers, you don't need an external crossover. It's a full range speaker set, which basically means the crossover is already built-in to it.

Let me know how it goes.

but surely the front compnants will have come with a passive crossover so the tweeters will only be running what they need ie, around 4khz up... What you are doing is bandpassing the mids and you want them playing as low as possible, so if they will go down to 63hz comfortably that should be fine.

As said above the best way to add midbass is to sound deaden the doors, my system in my mk1 octy lacked midbass, All I have done for now is to cut the moisture film behind the speakers, then put a few sheets of deadening material round the speaker and behind it, helped temendously, but if you do the whole door you will see a massive difference.

  • 1 month later...
  • Author

as some of you advised i removed the weather sheet that helped no end but i have now fitted a kit call SKINZ made by a compny called Four

you gussed it they are called Four Skinz

it comprises of a sound deadning sheet similar to dinomat, then a sheet of high denisty foam called a sound wave diffuser , and then a new weather sheet that sound can pass freely through but not moisture.

It's not cheap at £50 but I can tell it's the best £50 i have every spent on car Audio

http://www.raysmith.co.uk/Speakers/Speaker-Accessories/Skinz3_Pack/

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