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Old 10-01-2015, 11:19 AM   #1
SteveGrillo
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HU sound quality upgrade? Pioneer AVIC 8100nex?

(Note, I have BRZ, but question still applicable I think...)


I'm wondering if a new head unit will have significant sound quality upgrades for my setup...




I have just completed major upgrades of the system, and am considering upgrading the HU to a Pioneer AVIC 8100nex, and am wondering about sound quality improvements, in analog FM (or HD if reception is more reliable), and SAT.

I have the sub from a OEM-audio (I was very unhappy with the OEM-audio system), Image dynamics ES woofers for doors, and CDT es2000-e for upper-mid/tweets. I'm using a Helix PP82DSP for amp/crossovers/time-alignment/EQ (which is awesome BTW).

I'm tired of HD fm cutting out, and would love to know if the AVIC pioneer has better regular FM or more reliable HD FM.

Any thoughts on the subject?

Steve
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Old 10-01-2015, 12:48 PM   #2
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Hmmm. You're doing everything right if you've got the Helix in place. I don't think you'll see sound quality (as far as output goes) improvements, as the helix is already getting you there.

With that being said, reception could probably improved with a longer aftermarket antenna with stock HU. The pioneer head unit would probably plug into your stock antenna... so i'm not sure how the reception could improve, assuming stock antenna is in place.
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Old 10-01-2015, 04:19 PM   #3
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Thanks. Can you suggest that improved aftermarket antenna that fits aesthetically?
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Old 10-01-2015, 04:54 PM   #4
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I don't know a whole lot about the aftermarket antenna scene. I tend to stick with USB music library, avoiding radio/streams. Sorry about that. Someone else will know though!
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Old 10-01-2015, 05:08 PM   #5
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And as to how the pioneer unit could improve reception, it would be dependent on the ability of the radio to pull in stations. I do not know what the stock head unit specs are, which is why I posted this for anybody who might have Done anupgrade and might have comments about any improvements. The antenna itself is only a part of the equation when it comes to sound quality.
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Old 10-01-2015, 11:48 PM   #6
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Quote:
Originally Posted by SteveGrillo View Post
And as to how the pioneer unit could improve reception, it would be dependent on the ability of the radio to pull in stations. I do not know what the stock head unit specs are, which is why I posted this for anybody who might have Done anupgrade and might have comments about any improvements. The antenna itself is only a part of the equation when it comes to sound quality.
The expression "pull in stations" is what confuses people. It isn't about pulling them in so much as isolating adjacent frequencies and filtering out noise. The more advanced the circuitry, the better a job it will do. Even a weak signal can sound good if it can be made clean.
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Old 10-02-2015, 02:12 AM   #7
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I have a pioneer 4000nex in my brz, and the HD radio signal is pretty much the same as the stock headunit.
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Old 10-02-2015, 02:29 AM   #8
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I have the AVH2400bt. In mine, like others have said, why put all this money on speakers and a head unit and not play the music through a flash drive, bluetooth or AUX? Quality will always be better than HD FM radio lol

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Old 10-02-2015, 07:54 AM   #9
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As to the question about why FM, it's because I like it. I use other stuff (BT, SAT, USB) too. But I've improved the FM sound by about 3x with the new speaker/DSP setup. But before I go and spend $1200 on a head unit, I want to find one that might improve separation and sensitivity (and overall sound quality) in the FM band since I use it often.


I have had high-end home audio for many many years, and once I find something nice, I stick with it. My ears have cost me many thousands of dollars over the years, unfortunately.


In this case, I'm very happy with what I've found with speakers, and especially the amazing Helix PP82dsp and how incredibly flexible it is at tuning the whole system.


But I really would like to know what kind of improvement from there I can get with FM with a new head unit.


That's why I was looking for folks who could tell me what to expect for differences.
Hope that helps.
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