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  #1  
Old 02-24-2016, 09:25 PM
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Default Trouble with sq for door speakers

I have a selenium st350 tweet matched with a 8w4p 8"mid each door. They get loud but u hear little sq. How do I improve this? I have them running off a crescendo 800.4 (but it doesn't sound like the cross over settings work on the amp) Should I add an active cross over to each tweet and mid? Any help is greatly appreciated

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Last edited by iamsonic; 02-25-2016 at 01:23 AM.
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  #2  
Old 02-24-2016, 10:38 PM
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are the jbls free air? ever read t fade's "why I hate pro audio speakers"?
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Old 02-24-2016, 10:56 PM
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'active' means RCA level and uses DC power, remote and ground

I think you meant passive.

but try this first: set the settings like this and
run the tweeters on ch1&2
run the midbass on ch3&4 (this way you can use the remote volume knob to turn the mids down if needed) [or you can use front/rear fader on your deck]
as for the gains, set them at half to start or set them correctly if you have a dd-1 or O-scope

the red arrows I drew represent the knob setting. the goal is 3,000hz {3.0khz} crossover point and 100hz subsonic filter on the midbass

{the knob grooves might be 90 degrees off from the setting (90 degrees off means pointing at 9 O'clock and 3 O'clock instead of 12 O'clock and 6 O'clock)}

if you don't understand, have someone help you

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Last edited by iamsonic; 02-24-2016 at 11:07 PM.
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  #4  
Old 02-24-2016, 10:58 PM
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once you achieve 3,000hz crossover, you'll actually hear them as good as they can sound the way they are installed

Last edited by iamsonic; 02-24-2016 at 11:06 PM.
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Old 02-24-2016, 11:05 PM
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Quote:
Originally Posted by iamsonic View Post
kinda doesn't matter since those are the speakers he has. {changing them is not an option until he gives up on them}
It could easily change his mind into switching to something else that doesn't sound like loud dookie, that could matter to him for all you know.
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Old 02-24-2016, 11:15 PM
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Quote:
Originally Posted by w00tah View Post
It could easily change his mind into switching to something else that doesn't sound like loud dookie, that could matter to him for all you know.
not really.
he bought about $200 worth of speakers and cut holes in his door panels for them.

the way I see it, he may as well make them sound as good as he can the way they are before doing anything else.
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Old 02-24-2016, 11:42 PM
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Quote:
Originally Posted by iamsonic View Post
not really.
he bought about $200 worth of speakers and cut holes in his door panels for them.

the way I see it, he may as well make them sound as good as he can the way they are before doing anything else.
You can chrome a turd, but it's still going to be a turd.
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Old 02-24-2016, 11:55 PM
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Quote:
Originally Posted by w00tah View Post
You can chrome a turd, but it's still going to be a turd.
it'll probably sound better than yours
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Old 02-25-2016, 03:36 AM
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There is nothing wrong with pro audio it's all the half ass installs they are put into that are the issue. People hacking apart doors, throwing 6 tweets into the pillars. Basically anywhere they will fit and then just throwing power to them.

You could do the same thing with some $1000 per set focals, it'd still sound crappy, although it would cost a lot more.

Yes pro audio speakers generally have a rising frequency response in the midrange. That's what EQ is for. If your not capable of correcting basic frequency response issues (which even a perfect speaker will have once you put it into a car) then SQ isn't really what your after.

Sorry for the generalized rant, but it needed to be said.
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Old 02-25-2016, 09:42 AM
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Quote:
Originally Posted by iamsonic View Post
'active' means RCA level and uses DC power, remote and ground

I think you meant passive.

but try this first: set the settings like this and
run the tweeters on ch1&2
run the midbass on ch3&4 (this way you can use the remote volume knob to turn the mids down if needed) [or you can use front/rear fader on your deck]
as for the gains, set them at half to start or set them correctly if you have a dd-1 or O-scope

the red arrows I drew represent the knob setting. the goal is 3,000hz {3.0khz} crossover point and 100hz subsonic filter on the midbass

{the knob grooves might be 90 degrees off from the setting (90 degrees off means pointing at 9 O'clock and 3 O'clock instead of 12 O'clock and 6 O'clock)}

if you don't understand, have someone help you

[IMG]http://www.caraudioclassifieds.org/forum/attachment.php?
attachmentid=77578&stc=1&d=1456372301[/IMG]
This concept is interesting. Ive heard of someone mentioning it before but being able to look at it has me wondering...

So i can see that the subsonic is used as the cutoff for the mids at 100 hz, but since the amp is set to lowpass, it would seem that the the mids would reach very high into the frequency spectrum right?

Really interested in this
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