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  #13  
Old 02-17-2015, 07:04 PM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
-JL zr's650 component for the front with their passive crossovers ( I know 1stjeepGC won't like this at all -by the way thanks a lot for all the ideas and advice )
Greetings,


What did you do, the passive crossovers are in.

Ok, in you case you had to since you are running only 1 DSP and this is the only way to do it.

The output side of the MS-8 is only producing 2.7 volts at the max going into the amps not the customary 4 volts that is consider today's standard. When you get the 2nd DSP ( give it time) you will feel and hear the difference.

In any event, enjoy the system and remember the speakers have to break-in.

Best for now.

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  #14  
Old 02-17-2015, 08:47 PM
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Re: Planning an upgrade on my 14 overland

They fooled me saying that the crossovers are really really good for the zr's
So maybe when the tech was calibrating the voltage was going over 2.7 and that's why the clipping? Although now it sound fine as quality even at high volume. ( not as high as I wanted)
Should I keep the hu at 3q and ms8 between -10 -20 ?
All these voltages are giving me a headache trying to understand


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  #15  
Old 02-17-2015, 11:55 PM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
Should I keep the hu at 3q and ms8 between -10 -20 ?
All these voltages are giving me a headache trying to understand
Greetings,


First, see what the gains are on the JL Audio HD 900/5. Maybe you can push them up a little without get any distortion.

Then try keeping the HU at 3 quarter volume and adjust the MS-8 accordingly as per your battle plan which is the right way to do it. You might have to re calibrate the MS-8. On mine, I have it as direct connection without the need for summing which is why I am not sure at the moment about the re calibration.

As for the headache, you are not the only one has suffered this. Think of this in terms of balancing an equation from your math days.


Best for now.
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  #16  
Old 02-18-2015, 02:28 PM
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Re: Planning an upgrade on my 14 overland

Added to the volume issue I realized that at very low volume I can hear a soft hiss on the tweeters. Does that at any volume ( hu or ms8) even on mute...
So I guess the gains are too high? lol
Where these supposed to be measured with a multimeter?
Or could be a ground wire ?


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  #17  
Old 02-19-2015, 10:09 PM
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Re: Planning an upgrade on my 14 overland

Anyone knows the freq range for the stock center speaker or the d pillars ? On the alpine 9spk


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  #18  
Old 02-20-2015, 07:45 AM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
Anyone knows the freq range for the stock center speaker or the d pillars ? On the alpine 9spk


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Greetings,

Here is a link for the center. The D pillar should be similar in terms of the crossover settings.

Factory Frequency Response

I differently do not think they are set as a band-pass filter type. Most likely they are a Butterworth crossover setting.

On the MS-8, it works similar to the factory system. However, you can tell it the starting frequency. The center here is more dominant meaning a wider dispersion and that is what JBL designed it. In my case, my 2nd DSP helps me control it thru the use of the time delays and gain settings.

Best for now.
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  #19  
Old 02-20-2015, 07:57 AM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
Added to the volume issue I realized that at very low volume I can hear a soft hiss on the tweeters. Does that at any volume ( hu or ms8) even on mute...
So I guess the gains are too high? lol
Where these supposed to be measured with a multimeter?
Or could be a ground wire ?


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Greetings,

Could be anything from a ground wire to an RCA plug, the factory HU and even the gains.

The best way to start eliminating these factors is start with the MS-8. Since the MS-8 has an aux source, connect a portable source into it and make sure you lower the volume on the MS-8.

Best for now.
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  #20  
Old 02-20-2015, 11:04 PM
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Re: Planning an upgrade on my 14 overland

Do these xovers sound right?
80hz for the zr's
80hz for c3's
70hz sub
300hz center stock
400hz dpillars stock
All with 24db slopes


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  #21  
Old 02-20-2015, 11:33 PM
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Re: Planning an upgrade on my 14 overland

Also can anyone with a cleansweep do a cd rip to wav on the calibration cd? I think the tech at store setup the gains by ear not with a multimeter.
I know I can buy it :P but I've scheduled a visit to the store on Wednesday


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  #22  
Old 02-21-2015, 08:04 AM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
Do these xovers sound right?
80hz for the zr's
80hz for c3's
70hz sub
300hz center stock
400hz dpillars stock
All with 24db slopes


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Greetings,

I found with sub to drop it down to 60hz at 24db and then set the fronts to full range at 60hz 24 db. I have my stealth set the same but at 36db for slope since i have the ability to do so.

The rear door I like it to have it up a little more to catch the upper mid-bass frequencies before it goes into the midrange. Just to get a little a punch. This way I let the front stage do the work and have the lows of the sub do it's thing.

As for the center and D-pillar since you are still using the stock, if you are comfortable with it then leave it. When you change those speakers down the road, you most likely have to play with them again.

Best for now.
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  #23  
Old 02-22-2015, 11:46 PM
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Re: Planning an upgrade on my 14 overland

So maybe 100 for the rear? (c3's)


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  #24  
Old 02-23-2015, 07:36 AM
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Re: Planning an upgrade on my 14 overland

Quote:
Originally Posted by Jakkall View Post
So maybe 100 for the rear? (c3's)


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Greetings,

I like to start around 200hz listen and then take it down another 50. Then I go up to 250 to see how that sounds. This way I hear the character of the speaker in order to zone in with the reset of the system to get that balance.

Best for now.
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