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Ford Raptor Audio/Video/Electronics Forum [GEN 2]
Lat's '19 Screw Stereo build
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<blockquote data-quote="lateralis" data-source="post: 1495587" data-attributes="member: 35325"><p>Not much of an update but the guys at NAV-TV have my Zen A2B now. Hopefully it's an easy fix and I can get it back by the end of next week. I'm pretty close to throwing in a blue tooth speaker in a cup holder at this point... lol</p><p></p><p>Now while I'm in RMA purgatory I was able to at least do 1 tuning thing. Level matching the Android side of the PX6 to the Sync3 side. It's not exact since you don't have very fine control over the Android volume lvl but close enough soo yeah..</p><p></p><p>The goal of this is to make sure that the levels are the same between the sync side and PX6 side with no signal distortion. This way my ZEN (when I get it) has a clean even signal between the 2.</p><p></p><p>1st off make sure that none of your speakers are hooked up. 2nd make sure that all EQ is FLAT. I don't plan on ever adjusting these from the PX6 since I'll have my DSP handle everything.</p><p></p><p>I started with the Sync side and ran a 1K Hz sine wave tonal @ 0 db. It ran clean with no distortion all the way up to volume lvl 30 which was pretty surprising. At least that's what I saw on my cheepo Oscilloscope. So I based my max clean at 30 with voltage at about 2.52-2.55V Dc.</p><p></p><p>[ATTACH=full]146026[/ATTACH]</p><p></p><p>After that I swapped over to the Android side. Now this is where it gets a little tricky. So there is 2 adjusters you have to mess with. 1st one is the actual Android volume settings (think of it like your phone setting) and the other one is called Gain in the PX6 advanced settings. The one that is going to distort crap is actually the Android volume setting. Crappy thing is it's just a slider bar with no numbers so you just have to play around with it. I found a spot where the wave form got real funky and backed it down 2 ticks (with master volume at 30).</p><p></p><p>[ATTACH=full]146023[/ATTACH]</p><p></p><p>After that I went to the Advanced settings and adjusted that up to match the voltage seen on the Sync side of the house. I found that the "Gain" setting for the PX6 actually plays clean all the way up just like the Sync side. The voltage is a tad bit higher (2.60-2.63V Dc) but that should be fine. Also the one that seems to actually control "gain" is the one labeled "Other Volume Gain". I just matched everything else just in case but I haven't seen them actually do anything using different sources through the PX6.</p><p></p><p>[ATTACH=full]146024[/ATTACH]</p><p></p><p>[ATTACH=full]146025[/ATTACH]</p><p></p><p>If you're wondering how I did this I plugged my stock B&O amp back in and than measured the signal at the front door speaker wires. In my case, the tweeter sail wires now.</p><p></p><p>Now if I want more range from my master volume I'll adjust the gain on the next thing in line which would be the Zen A2B. Of coarse that is going to have to wait until I get it back. So pretty much what would be left is Zen lvl adjust, amp gains, DSP crossover setting and time alignment and finally tuning with an RTA.</p></blockquote><p></p>
[QUOTE="lateralis, post: 1495587, member: 35325"] Not much of an update but the guys at NAV-TV have my Zen A2B now. Hopefully it's an easy fix and I can get it back by the end of next week. I'm pretty close to throwing in a blue tooth speaker in a cup holder at this point... lol Now while I'm in RMA purgatory I was able to at least do 1 tuning thing. Level matching the Android side of the PX6 to the Sync3 side. It's not exact since you don't have very fine control over the Android volume lvl but close enough soo yeah.. The goal of this is to make sure that the levels are the same between the sync side and PX6 side with no signal distortion. This way my ZEN (when I get it) has a clean even signal between the 2. 1st off make sure that none of your speakers are hooked up. 2nd make sure that all EQ is FLAT. I don't plan on ever adjusting these from the PX6 since I'll have my DSP handle everything. I started with the Sync side and ran a 1K Hz sine wave tonal @ 0 db. It ran clean with no distortion all the way up to volume lvl 30 which was pretty surprising. At least that's what I saw on my cheepo Oscilloscope. So I based my max clean at 30 with voltage at about 2.52-2.55V Dc. [ATTACH=full]146026[/ATTACH] After that I swapped over to the Android side. Now this is where it gets a little tricky. So there is 2 adjusters you have to mess with. 1st one is the actual Android volume settings (think of it like your phone setting) and the other one is called Gain in the PX6 advanced settings. The one that is going to distort crap is actually the Android volume setting. Crappy thing is it's just a slider bar with no numbers so you just have to play around with it. I found a spot where the wave form got real funky and backed it down 2 ticks (with master volume at 30). [ATTACH=full]146023[/ATTACH] After that I went to the Advanced settings and adjusted that up to match the voltage seen on the Sync side of the house. I found that the "Gain" setting for the PX6 actually plays clean all the way up just like the Sync side. The voltage is a tad bit higher (2.60-2.63V Dc) but that should be fine. Also the one that seems to actually control "gain" is the one labeled "Other Volume Gain". I just matched everything else just in case but I haven't seen them actually do anything using different sources through the PX6. [ATTACH=full]146024[/ATTACH] [ATTACH=full]146025[/ATTACH] If you're wondering how I did this I plugged my stock B&O amp back in and than measured the signal at the front door speaker wires. In my case, the tweeter sail wires now. Now if I want more range from my master volume I'll adjust the gain on the next thing in line which would be the Zen A2B. Of coarse that is going to have to wait until I get it back. So pretty much what would be left is Zen lvl adjust, amp gains, DSP crossover setting and time alignment and finally tuning with an RTA. [/QUOTE]
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Lat's '19 Screw Stereo build
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