2017 TLX Audio System
#81
Youtube upload of AC voltage at pre amplifier "Front Right" stereo wires range from 536mV - 791mV (.536 Volts to .791 Volts).
Video notes explain the details of setup.
Fix82 manual states the following
"The FiX™ 82 accepts up to eight channels (four stereo pairs) of full-range or band-limited output from an OEM audio source (250 mV – 30 V RMS)."
We have 2 sets of pre amplifier wires, the lowest they drop in brief pink noise testing was .536mv. Multiply that by 2 and you have at least 1 V RMS.
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@Know BChester linked to a thread where the person added a single wire where the stereo grounds and sent it back to where the amplifier was grounded. In your video they put it in the amplifier. I haven't had time to look into it myself but in the schematic you posted I would make double check if that's where the factory amplifier is grounded, the stereo, or both?
Last edited by 01LSi; 08-24-2017 at 04:58 PM.
The following users liked this post:
know610 (08-24-2017)
#83
I successfully ground the headunit and OEM factory. All of the oem ground are in one nut. I tested with AC turn off, music mute, no filter, and increase gain in Amp. The noise still their but
un-noticable. No ground loop. floor noise is very very low. Before, gain almost to min and I still hear it. Let see in a few days.
All pictures in dropbox
https://www.dropbox.com/sh/0427rlayy...H4AZOBePa?dl=0
un-noticable. No ground loop. floor noise is very very low. Before, gain almost to min and I still hear it. Let see in a few days.
All pictures in dropbox
https://www.dropbox.com/sh/0427rlayy...H4AZOBePa?dl=0
#84
Lie again. When I turn the steeling wheel left or right, it activate the hiss noise when muted, Will try filter plug. Or maybe I need to re-calibrate Fix82. Music on, I don't hear it when turning steeling wheel.
#86
See picture. I grounded with a 16ga wire for OEM amp. I'm thinking of changing to 10ga.
Once I get all my supplies, I will upgrade Amp ground to new location using Kolossus Fleks Kable 0ga, Krystal Kable 4 Channel 6M Twisted Pair RCA Cable, Krystal Kable Twisted Pair Y Adapter 1M2F, and Stinger SPT521 Gauge Reducer 1/0 Gauge Input to 4 Gauge Pin
Question, is it ok for Amp Power wire running to battery is 4ga since I replace Amp ground from 4ga to 0ga? In the near future, I will upgrade to 0ga for Amp Power wire and move Fix82 to trunk. Maybe I'm wrong but I also think since OEM and FIX82 touch each other might also cause noise?
Also, I might need to see where the shop ground Fix82 5-pin power connector. Per manual,
Once I get all my supplies, I will upgrade Amp ground to new location using Kolossus Fleks Kable 0ga, Krystal Kable 4 Channel 6M Twisted Pair RCA Cable, Krystal Kable Twisted Pair Y Adapter 1M2F, and Stinger SPT521 Gauge Reducer 1/0 Gauge Input to 4 Gauge Pin
Question, is it ok for Amp Power wire running to battery is 4ga since I replace Amp ground from 4ga to 0ga? In the near future, I will upgrade to 0ga for Amp Power wire and move Fix82 to trunk. Maybe I'm wrong but I also think since OEM and FIX82 touch each other might also cause noise?
Also, I might need to see where the shop ground Fix82 5-pin power connector. Per manual,
Connect ground to a clean, solid metal grounding point. Ideally, the +12VDC (Battery) and Ground connections should be run to the same distribution points that the amplifiers use for their power and ground connections. This will minimize the possibility of noise in the system.
Last edited by know610; 09-01-2017 at 09:24 AM.
#87
See picture. I grounded with a 16ga wire for OEM amp. I'm thinking of changing to 10ga.
Once I get all my supplies, I will upgrade Amp ground to new location using Kolossus Fleks Kable 0ga, Krystal Kable 4 Channel 6M Twisted Pair RCA Cable, Krystal Kable Twisted Pair Y Adapter 1M2F, and Stinger SPT521 Gauge Reducer 1/0 Gauge Input to 4 Gauge Pin
Question, is it ok for Amp Power wire running to battery is 4ga since I replace Amp ground from 4ga to 0ga? In the near future, I will upgrade to 0ga for Amp Power wire and move Fix82 to trunk. Maybe I'm wrong but I also think since OEM and FIX82 touch each other might also cause noise?
Also, I might need to see where the shop ground Fix82 5-pin power connector. Per manual,
Once I get all my supplies, I will upgrade Amp ground to new location using Kolossus Fleks Kable 0ga, Krystal Kable 4 Channel 6M Twisted Pair RCA Cable, Krystal Kable Twisted Pair Y Adapter 1M2F, and Stinger SPT521 Gauge Reducer 1/0 Gauge Input to 4 Gauge Pin
Question, is it ok for Amp Power wire running to battery is 4ga since I replace Amp ground from 4ga to 0ga? In the near future, I will upgrade to 0ga for Amp Power wire and move Fix82 to trunk. Maybe I'm wrong but I also think since OEM and FIX82 touch each other might also cause noise?
Also, I might need to see where the shop ground Fix82 5-pin power connector. Per manual,
Last edited by Bchester6; 09-02-2017 at 07:21 AM.
#88
Finally I get a chance to re-wire all the mess the shop did. I've been contacting JL support team and I have to tell you, they are awesome. They explained how to wire JL Fix 82 and what not to wired.
The shop used all butt connectors and slice OEM amp ground wire and just tape it then connect to JL fix82. I guess maybe that's where the noise come from, idk. They took oem rear wire and connected to jl fix82 input 3/4 which was for tweeter only. Now that I re-wire and solder, everything sound good and no hiss or high pitch noise.
My before and after. This is my first time soldering. Another picture is how you suppose to wire JL Fix-82
Also in my dropbox: https://www.dropbox.com/sh/0427rlayy...H4AZOBePa?dl=0
The shop used all butt connectors and slice OEM amp ground wire and just tape it then connect to JL fix82. I guess maybe that's where the noise come from, idk. They took oem rear wire and connected to jl fix82 input 3/4 which was for tweeter only. Now that I re-wire and solder, everything sound good and no hiss or high pitch noise.
My before and after. This is my first time soldering. Another picture is how you suppose to wire JL Fix-82
Also in my dropbox: https://www.dropbox.com/sh/0427rlayy...H4AZOBePa?dl=0
#89
@Know congratulations! Great to hear that good news. So when you're volume is completely at zero you don't hear anything at all? Not even a slightly higher noise floor? And you tapped post factory amplifier too so that's surprising.
Pain in the butt to solder down there but it's the best way to go.
Pain in the butt to solder down there but it's the best way to go.
Last edited by 01LSi; 09-11-2017 at 08:43 PM.
#90
@Know congratulations! Great to hear that good news. So when you're volume is completely at zero you don't hear anything at all? Not even a slightly higher noise floor? And you tapped post factory amplifier too so that's surprising.
Pain in the butt to solder down there but it's the best way to go.
Pain in the butt to solder down there but it's the best way to go.
Last edited by know610; 09-11-2017 at 09:38 PM.
#92
I have to retest the pre amp voltage one more time ... I was using pink noise streaming HD from Youtube. Pink noise is good for checking if the full audio spectrum is present. But with the Youtube Pink Noise video I don't know what the decibel level of that stream is. I will do it one more time but instead I'll use a "Sine Wave" .wav file @ 0dbs. Here's a link to one I generated https://www.dropbox.com/s/rr5ewgbgat...20Wav.wav?dl=0
See this post Car Audio | DiyMobileAudio.com | Car Stereo Forum - View Single Post - Helix DSP Pro - Who has info?
You can measure the voltage by setting your multimeter to "AC current" like I did in the video, and placing the positive and negative probes on the positive and negative wires of the speaker you want to test. Make sure the speaker is disconnected. Then you play the Sine Wave file I linked to above and that should give the voltage. In the video I made, I was measuring the voltage PRE amplifier. I wanted to know how strong the stereo voltage was before it was amplified.
Up above I mentioned that the manual for the JL Fix says it can use voltage anywhere from (250 mV – 30 V RMS).
I think what you are trying to measure is different than me though? So the steps / process might look different for you than me.
See this post Car Audio | DiyMobileAudio.com | Car Stereo Forum - View Single Post - Helix DSP Pro - Who has info?
You can measure the voltage by setting your multimeter to "AC current" like I did in the video, and placing the positive and negative probes on the positive and negative wires of the speaker you want to test. Make sure the speaker is disconnected. Then you play the Sine Wave file I linked to above and that should give the voltage. In the video I made, I was measuring the voltage PRE amplifier. I wanted to know how strong the stereo voltage was before it was amplified.
Up above I mentioned that the manual for the JL Fix says it can use voltage anywhere from (250 mV – 30 V RMS).
I think what you are trying to measure is different than me though? So the steps / process might look different for you than me.
#94
Finally all done with my system. I upgrade power and ground wire 0 gauge. I grounded at right rear passenger seat. Audio mute and a/c off, I hear no hiss and silence “shhhh”. I got all the boom and bass.
Thank you to Bchester6 and 01LSi for all there help and input.
Next, I plan to do the 4 big upgrade.
Thank you to Bchester6 and 01LSi for all there help and input.
Next, I plan to do the 4 big upgrade.
#95
I updated all power wire and ground wire plus doing the big 3/4 upgrade to all 0 gauge OFC. I tested all ground using multimeter ohm and all ground was between 0 and 1ohm. This telling it's a good ground. For the big 3/4 upgrade, I used the same grounding point since resistance are less than 1ohm. I saw 2 more factory ground under the hood that can be reachable; will do it this wkend for that 2 ground. There's are about 3 more ground that are hard to reach and will not do it. For the ring terminal, I use Bassik Battery Terminal and Top Post Adapter from KnuKoncept because I don't want to cut any wire.
These what I have done so far.
1. Alternator (+) to battery (+) --> wrap with furry tape then loom tube and finally taped with furry tape again just to tighten the loom tube opening. I had to cut 0ga ring terminal so it fit inside alternator charging power and put back the oem wire on top
2. Engine block to battery (-) --> wrap w/furry tape
3. Chassis to battery (-) --> wrap w/furry tape
4. Starter to chassis --> wrap w/furry tape
Note: Oga wire always first then oem wire on top of it.
The result was way perfect compare before the 3/4 upgrade and I felt my car kick better probably the alternator charge better and good currency flow or it just a mind playing game one me. lol Anyhow, Yes I do see an improvement in audio problem and improvement in car performance,
These what I have done so far.
1. Alternator (+) to battery (+) --> wrap with furry tape then loom tube and finally taped with furry tape again just to tighten the loom tube opening. I had to cut 0ga ring terminal so it fit inside alternator charging power and put back the oem wire on top
2. Engine block to battery (-) --> wrap w/furry tape
3. Chassis to battery (-) --> wrap w/furry tape
4. Starter to chassis --> wrap w/furry tape
Note: Oga wire always first then oem wire on top of it.
The result was way perfect compare before the 3/4 upgrade and I felt my car kick better probably the alternator charge better and good currency flow or it just a mind playing game one me. lol Anyhow, Yes I do see an improvement in audio problem and improvement in car performance,
Last edited by know610; 10-10-2017 at 07:57 AM.
The following users liked this post:
01LSi (10-16-2017)
#98
How is the imaging with the tweeters moved from the OEM location? Do you have time alignment capabilities to compensate if need be?
Last edited by Bchester6; 02-11-2018 at 08:57 AM.
#99
next project is Naviks since it's 100% plug&play whereas navTool it still need to tap to OEM wire for power.
#100
How is your imaging sound stage now that you've gone to the A-pillars. I had a tough time getting my soundstage right in my vehicle as everything wants to pull to the drivers side but a little processing and time alignment will correct these problems.
#101
Sorry I have no idea. All I know is it sound good for me.