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Need Help Tuning my System

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Old 03-30-2008, 10:49 AM
  #11  
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Originally Posted by fozzz
If you dont get the car to sound the way you want it to by April 27th. Come on out to the IASCA show at Mobile Dynamics. I would be surprised if you couldn't get a person to help you there.
Where is that show being held?
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Old 03-30-2008, 11:02 AM
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Originally Posted by Crisis
always felt the mid issue is due to the lack of a sealed compartment & shape of the door, hence the question about dynamat.
Ok, is the problem really excessive midrange, or a lack of low bass? :-). If you're looking for the same low bass response you got from the stock speakers, then you're likely not going to get it - I haven't tested them yet, but I'm guessing that the stock units are a high-Q design with a resonant peak in the lower bass, I guess to compensate for the lossy door location.

The best solution for the missing low bass is to use a subwoofer with your system. You could go with one of those under-the-seat ones available from Kenwood or others, or go with a larger one in the trunk. As the owner of the DIYSubwoofers site, it should be easy to guess what I plan to do :-).


Originally Posted by Crisis
Will you be replacing the factory tweeters or using them to accompany your Aurasound NT1-204-8D?
I used the Aurasounds to replace the stock factory tweeters. The main tweeters are Seas units, which I mounted on special brackets behind the main speaker grilles in the doors (not the very best location, but I'm trying to keep everything looking as stock as possible). The Aurasounds are basically to compensate for the off-axis rollof of the Seas units, and add a little extra sizzle at the top end.


Originally Posted by Crisis
I just noticed the steering wheel is on the right side of the vehicle, are you in Europe?
I'm based in the West Indies - we drive on the left :-).
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Old 03-31-2008, 01:39 PM
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Originally Posted by Brian Steele
Ok, is the problem really excessive midrange, or a lack of low bass? :-). If you're looking for the same low bass response you got from the stock speakers, then you're likely not going to get it - I haven't tested them yet, but I'm guessing that the stock units are a high-Q design with a resonant peak in the lower bass, I guess to compensate for the lossy door location.
Hi Brian, I think you maybe onto something here with the low bass vs midrange. I tried to tune my HU yesterday, playing aroud w/ the X-over, it has a Low, Mid, High X-over built in. I think 90% of my issue w/ sound quality is learning how to tune this deck
I really appreciate you taking the time to help me with this
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Old 04-03-2008, 08:39 AM
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Originally Posted by Juggy
I'm not to familiar with the 9887's features/functions.

From your description of the sound i have found that generaly too much mid will be in the range of 250 to 500 hz, that is the frequency range that will generally tire your ears out and give the sound too much mid range weight.

As for TA, this feature delays sound going to each speaker to give the impression that you are sitting at an equal distance from either speaker, thus, replicating a home audio setup where you can move your seat. Generally it isset in MS (milliseconds), you would delay sound to the left side of the car, so that the wave from the left and right side arrive at your ears at the same time.

X-Over, since you are not running any sub, you could cross the speakers you have now over at 60Hz, they will most likely not be responsive under that frequency and this will allow you to play music at a higher volume without wasting power that is used to produce frequencies that are below the Fs (roll off frequency) off your speakers.
Hi Juggy, I've got a question for you in re. the X-Over setting @ 60Hz. The X-Over configuration on the 9887 has 3 different settings High, Mid, & Low. Within each of these you can set, Level Adjustments(dB), Output Frequency(Hz), & Slope(dB).
I hope I haven't confused you, I know you're not familiar w/ 9887 setup, but should I set up High, Mid, & Low X-Over's to 60Hz?
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Old 04-03-2008, 05:07 PM
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The Crossover on the 9887 can operate in two modes 4.2ch (F/R/Sub) or 2.2ch (3-way). Yours should be set for 4.2ch.
This setting will give you a separate highpass filter for your front speakers and rear speakers. "High" will adjust your front speakers and "Mid" will adjust your rear. "Low" will provide a lowpass filter for when you add a sub.
Your speakers are rated to 65Hz so you could try a 63Hz setting with a steep slope (24db) or if they can't handle that you may need to try a 80Hz setting with a more gradual slope 18db or 12db.
Your amp also has a crossover so you may want to check that it's disabled.
Hope that helps.
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Old 04-04-2008, 11:23 AM
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Originally Posted by grep
The Crossover on the 9887 can operate in two modes 4.2ch (F/R/Sub) or 2.2ch (3-way). Yours should be set for 4.2ch.
This setting will give you a separate highpass filter for your front speakers and rear speakers. "High" will adjust your front speakers and "Mid" will adjust your rear. "Low" will provide a lowpass filter for when you add a sub.
Your speakers are rated to 65Hz so you could try a 63Hz setting with a steep slope (24db) or if they can't handle that you may need to try a 80Hz setting with a more gradual slope 18db or 12db.
Your amp also has a crossover so you may want to check that it's disabled.
Hope that helps.
Thanx grep, you must be a unix guy to have this handle, I've tried your recommendation @ 63Hz for the high & mid, with a slope of 24db, & the stage is much improved! I think adding a sub will balance everything out, & was looking @ the Blaupunkt THb 200A powered sub
Attached Thumbnails Need Help Tuning my System-thb-200a.jpg  
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