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Problem with New CDA-9887
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<blockquote data-quote="amedeuce" data-source="post: 3950429" data-attributes="member: 551590"><p>So I got my new 9887 from Crutchfield on Friday. It is replacing my 9833.</p><p></p><p>I set it to 3-way and wire up the harness. I check one of the rca out's with my osope to check for clipping. Of course with all the alpine units I've used, they don't clip.</p><p></p><p>So I just decide to use same volume for setting up gains as I did with the 9833 which is 24/35.</p><p></p><p>I set up gains on amp and in fact I didn't have to adjust at all as they were already set from the 9833.</p><p></p><p>So I start to mess around with the 9887, getting used to the settings and tweaking everything and swapping + &amp; - on the amp for phasing and what not.</p><p></p><p>I set the balance over to left and notice that it is extremely quiter than the right.</p><p></p><p>So after trying every troubleshooting procedure like different rca's, amp settings, h/u settings, you name it.</p><p></p><p>I thought it was the rca wires so I wiggled them and notice volume increase as I did this, so it must be the rca's, right?</p><p></p><p><strong>Wrong.</strong></p><p></p><p>Got my rca test plug out (male rca cut and spliced) and plugged it into each rca out on the back of the 9887.</p><p></p><p><strong>Volume 28/35 - 1khz test tone - using oscope</strong></p><p></p><p>The bottom rca outs (sub) are fine. 1.9xx volts</p><p></p><p>The middle rca outs (front) red fine black about half voltage .8xx volts unless you slightly pull out the plug then it's fine (it did this with several different plugs) then it would be 1.9xx volts</p><p></p><p>The top rca outs (rear) done for! They read a whopping <strong>24mV</strong> //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif</p><p></p><p>At first it was only one of the top rca outs that was reading 24mV and then they both went out.</p><p></p><p>I wonder if this could have been caused by me somehow. I have installed plenty of headunits without a single problem, ever.</p><p></p><p>But this is weird to me, it's like it started to go out slowly then the channels died.</p><p></p><p>However a simple 3 minute phone call to crutchfield and a new unit is on the way. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</p></blockquote><p></p>
[QUOTE="amedeuce, post: 3950429, member: 551590"] So I got my new 9887 from Crutchfield on Friday. It is replacing my 9833. I set it to 3-way and wire up the harness. I check one of the rca out's with my osope to check for clipping. Of course with all the alpine units I've used, they don't clip. So I just decide to use same volume for setting up gains as I did with the 9833 which is 24/35. I set up gains on amp and in fact I didn't have to adjust at all as they were already set from the 9833. So I start to mess around with the 9887, getting used to the settings and tweaking everything and swapping + & - on the amp for phasing and what not. I set the balance over to left and notice that it is extremely quiter than the right. So after trying every troubleshooting procedure like different rca's, amp settings, h/u settings, you name it. I thought it was the rca wires so I wiggled them and notice volume increase as I did this, so it must be the rca's, right? [B]Wrong.[/B] Got my rca test plug out (male rca cut and spliced) and plugged it into each rca out on the back of the 9887. [B]Volume 28/35 - 1khz test tone - using oscope[/B] The bottom rca outs (sub) are fine. 1.9xx volts The middle rca outs (front) red fine black about half voltage .8xx volts unless you slightly pull out the plug then it's fine (it did this with several different plugs) then it would be 1.9xx volts The top rca outs (rear) done for! They read a whopping [B]24mV[/B] [IMG]//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif[/IMG] At first it was only one of the top rca outs that was reading 24mV and then they both went out. I wonder if this could have been caused by me somehow. I have installed plenty of headunits without a single problem, ever. But this is weird to me, it's like it started to go out slowly then the channels died. However a simple 3 minute phone call to crutchfield and a new unit is on the way. [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] [/QUOTE]
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