Need help on my quest to get decently loud and still sound good...


bajbass

Junior Member
Jan 29, 2018
47
1
baj
Well since i have my bass where i want it be (2 12 American bass xfls ported) i need to get my mids to keep up currently im running these https://powerbassusa.com/us/en/products/mobile-audio/xpro-6-65-Octagonal-mid-range-driver-4-ohm/    along side a pair of massive ct2 tweeters. The problem is like every 6.5 pro audio speaker i cross path with there is a huge nulls and peaks in the frequency responce when i measure in rew which sounds annoying and horrible without heavy eqing.I find i need to cut 1.3khz  by 11 dbs to get it near flat responce then there is still big 8 -dbs null around 700 hz i think .....then they dont get as loud after heavy eqing.My question is do i get 8 inch better pro audio speakers like the crescendo un 8s with more power behind them or get multiple car audio midbass/midrange 6.5s in each door whice sound way better without much eqing...

 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
17,262
253
South Coast Metro, CA
Well since i have my bass where i want it be (2 12 American bass xfls ported) i need to get my mids to keep up currently im running these https://powerbassusa.com/us/en/products/mobile-audio/xpro-6-65-Octagonal-mid-range-driver-4-ohm/    along side a pair of massive ct2 tweeters. The problem is like every 6.5 pro audio speaker i cross path with there is a huge nulls and peaks in the frequency responce when i measure in rew which sounds annoying and horrible without heavy eqing.I find i need to cut 1.3khz  by 11 dbs to get it near flat responce then there is still big 8 -dbs null around 700 hz i think .....then they dont get as loud after heavy eqing.My question is do i get 8 inch better pro audio speakers like the crescendo un 8s with more power behind them or get multiple car audio midbass/midrange 6.5s in each door whice sound way better without much eqing...
11 db peak at 1.3khz is absolutely not natural or normal at all, something else could be at play here other than type of speaker.

That being said, UNs should sound a lot better and smoother. Powerbass isnt really known for good sounding mids.  Also door treatments are important and headunit or  DSP + source is important. You also want literally double the speaker's RMS.

If you can do multiple 6.5s then have one dedicated for midrange and one dedicated for midbass.  Have like several mids and highs amps and do a 3 way active network setup. You'll also want to do some heavy door treatments to treat any kind of reflection and cancellation you are experiencing in the door that is causing these peaks and dips. 

 
OP
B

bajbass

Junior Member
Jan 29, 2018
47
1
baj
well i have measured the powerbass mid out of car in small bookshelf box i made and came up with this graph

powerbass mid.jpg

 
OP
B

bajbass

Junior Member
Jan 29, 2018
47
1
baj
Btw I have a dayton dsp and a precision power phantom p900.4 for now ...planing to bridge it into stereo to get at least 450 x2 then get a stereo amp or so to power the tweeters.My doors are extremely deaden but starting to wonder if the door panels causing the freaky response since the grills on the panels don't line up perfectly to the front of the speaker..

 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
17,262
253
South Coast Metro, CA
Btw I have a dayton dsp and a precision power phantom p900.4 for now ...planing to bridge it into stereo to get at least 450 x2 then get a stereo amp or so to power the tweeters.My doors are extremely deaden but starting to wonder if the door panels causing the freaky response since the grills on the panels don't line up perfectly to the front of the speaker..
Might want to get some foam weather strip to seal up and fully direct the sound into the car cabin. Also are you using a head unit as well or are you using the USB dongle? Yeah that dip on the graph doesnt look good but the peak is definitely from your door acoustics.

 
OP
B

bajbass

Junior Member
Jan 29, 2018
47
1
baj
well i got them to sound a bit better but still looking to replace them with 8s but since i live in the caribbean its a challenge getting my hands on any crescendo gear unless i pay a shit tonne of shipping and duty.....choices are limited locally...but what i can get my hands on are basically DS18 8 pros or neos , powerbass ,power acoustic...,precision power may find pioneers and ground zero. But the ground zeros cost a fortune even if its worth it idk but are the ds18 mids any good....?

btw i use rca and bluetooth sometimes but handling the phone while on the road for volume and sound selection is a pain in the a**

 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
17,262
253
South Coast Metro, CA
well i got them to sound a bit better but still looking to replace them with 8s but since i live in the caribbean its a challenge getting my hands on any crescendo gear unless i pay a shit tonne of shipping and duty.....choices are limited locally...but what i can get my hands on are basically DS18 8 pros or neos , powerbass ,power acoustic...,precision power may find pioneers and ground zero. But the ground zeros cost a fortune even if its worth it idk but are the ds18 mids any good....?

btw i use rca and bluetooth sometimes but handling the phone while on the road for volume and sound selection is a pain in the a**
do they have any pure midbass only drivers? might want to do a 3 way active front with a dedicated midbass, midrange and tweeters.

 
OP
B

bajbass

Junior Member
Jan 29, 2018
47
1
baj
Well not sure I could find any dedicated mid bass driver but I'll look around...Another question do you usually lpf cross pro audio mids higher than regular car mids since these speakers have a responce up to 10 kHz...? Right now I have them cross at 4000 k @24 linkwitz Riley filter

 
Last edited by a moderator:

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
17,262
253
South Coast Metro, CA
I have my pwx crossed at 80hz at -6 db so it really depends on the mid. i can turn off high pass and basically have sub bass coming from my doors down to 28hz haha.

 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.


Users Who Are Viewing This Thread (Users: 0, Guests: 1)



Latest posts

Trending topics

Latest classifieds