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General Car Audio
Setting Up an Audio Control DQDX
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<blockquote data-quote="kingtj" data-source="post: 8466192" data-attributes="member: 667533"><p>I realize I'm responding to a pretty old thread here -- but I can't find very many people with experience setting up the DQDX.</p><p></p><p>I purchased one before the holidays to put in my Jeep Wrangler. I'm still using the factory stereo head unit (RHR730n), but running a 6 channel JL Audio 700 watt power amp with it, via a PAC Audio C2A-CHY-23 adapter and all of the factory speakers have been swapped out. (I have a Pioneer subwoofer in the factory housing, for example, and Infinity 6032si speakers in the sound bar. Alpine 610c's in the front, and factory tweeters disconnected.)</p><p></p><p>I had some initial headaches getting the DQDX working right, until AudioControl tech support told me I needed to set the jumper in the unit to "balanced" (unbalanced RCA is the default), in order to get it to behave well with the PAC harness. (For whatever weird reason, in the default unbalanced mode, the PAC harness would randomly seem to get "mixed up" when you adjusted the volume on the head-unit and suddenly go really loud, and not respond to turning the volume dial down, etc.)</p><p></p><p>Well, I now have the unit neatly mounted in the rear of the Jeep, on a tray covering up the floor jack. Everything was sounding clean and pretty good, with nothing left to do but program all of the time alignment stuff.</p><p></p><p>But this morning, I got in the Jeep and a hissing/popping noise was coming out of my front driver-side speaker and the audio level of the music seemed to be lower than normal from it. I turned the radio off (which of course also powered off the amp and DQDX via their remote wires). Turned it back on and it sounded better again .... until I changed my input source from the FM radio station I was listening to over to XM. Then the audio suddenly shifted to only playing out my rear speakers while a constant (louder) hiss played from them too! I tried pushing the DQDX's remote dial to toggle it into "bypass" mode, but that didn't fix the noise.</p><p></p><p>Turning the radio head unit off and back on a second time made things return to normal.</p><p></p><p>Right now, I'm thinking this indicates a defective DQDX? But I suppose if the time alignment feature really does need to be properly configured, maybe it can cause the unit to act up like this too? I still haven't gotten around to that....</p><p></p><p>Are these units really any good, or is there a growing consensus that they're often flaky and defective like this? (Over on Crutchfield's site, the product only has a few reviews, but I think it has only a 3 star rating because of a 1 star from someone complaining they got 3 bad units in a row?) On Amazon, I've seen a similar thing -- where some people like the DQDX, but just as many say they have problems the company doesn't ever get resolved for them.</p></blockquote><p></p>
[QUOTE="kingtj, post: 8466192, member: 667533"] I realize I'm responding to a pretty old thread here -- but I can't find very many people with experience setting up the DQDX. I purchased one before the holidays to put in my Jeep Wrangler. I'm still using the factory stereo head unit (RHR730n), but running a 6 channel JL Audio 700 watt power amp with it, via a PAC Audio C2A-CHY-23 adapter and all of the factory speakers have been swapped out. (I have a Pioneer subwoofer in the factory housing, for example, and Infinity 6032si speakers in the sound bar. Alpine 610c's in the front, and factory tweeters disconnected.) I had some initial headaches getting the DQDX working right, until AudioControl tech support told me I needed to set the jumper in the unit to "balanced" (unbalanced RCA is the default), in order to get it to behave well with the PAC harness. (For whatever weird reason, in the default unbalanced mode, the PAC harness would randomly seem to get "mixed up" when you adjusted the volume on the head-unit and suddenly go really loud, and not respond to turning the volume dial down, etc.) Well, I now have the unit neatly mounted in the rear of the Jeep, on a tray covering up the floor jack. Everything was sounding clean and pretty good, with nothing left to do but program all of the time alignment stuff. But this morning, I got in the Jeep and a hissing/popping noise was coming out of my front driver-side speaker and the audio level of the music seemed to be lower than normal from it. I turned the radio off (which of course also powered off the amp and DQDX via their remote wires). Turned it back on and it sounded better again .... until I changed my input source from the FM radio station I was listening to over to XM. Then the audio suddenly shifted to only playing out my rear speakers while a constant (louder) hiss played from them too! I tried pushing the DQDX's remote dial to toggle it into "bypass" mode, but that didn't fix the noise. Turning the radio head unit off and back on a second time made things return to normal. Right now, I'm thinking this indicates a defective DQDX? But I suppose if the time alignment feature really does need to be properly configured, maybe it can cause the unit to act up like this too? I still haven't gotten around to that.... Are these units really any good, or is there a growing consensus that they're often flaky and defective like this? (Over on Crutchfield's site, the product only has a few reviews, but I think it has only a 3 star rating because of a 1 star from someone complaining they got 3 bad units in a row?) On Amazon, I've seen a similar thing -- where some people like the DQDX, but just as many say they have problems the company doesn't ever get resolved for them. [/QUOTE]
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