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Really harsh/bright/piercing audio
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<blockquote data-quote="Romans5.8" data-source="post: 8583731" data-attributes="member: 645790"><p>The conversion happens at the source of transmission. FM and AM are analogue signals. So is an RCA line level audio signal (which is what comes out of the 30 pin connector; hence the DAC in the adapter. It's essentially a mini RCA connection, which is analogue as well). It may have a DAC, but no, none of those signals are digital. They just aren't. I'm not an audio geek per se but I am an electronics geek. In my livingroom is a gorgeous old AM/FM radio (that supports quadriphonic FM! Which is now defunct) that most certainly contains no DAC, I've restored it myself. It's an entirely analog radio. It supports Vinyl, AM, FM/FM Stereo/FM Quadrophonic; all of which are analog. CD, mp3, aac (and other lossless formats), HD Radio, XM/Sirius are all digital. AM/FM, RCA (line level), vinyl, most tape formats (except a select few digital tape formats; but compact cassettes and 8 tracks are both analog), etc are all analog. The audio is stored in an analog format, not in bits which need to be converter to waveforms. The FM transmitter is transmitting waveforms directly to the radio. If it was transmitting bits, (which would need converting), then it would go in and out like sattelite radio; not get 'fuzzy'. Again, not to say it doesn't have a DAC in it somewhere (I'm not sure what for, though). But the signals it's receiving are <strong>definitely</strong> analog signals. My assumption that it has no DAC comes from the fact that it CAN'T accept any sort of digital connection, like being able to connect with an iPod digitally, but instead relies on the iPod (or iPhones) built in DAC and receives an analog signal from that. You might be thinking of a DSP (Digital Signal Processor). That it might, in fact, have. Something that digitally adjusts the incoming analog signals (including a signal FROM a DAC, it would be connected to it's analog output pins). It very well may use some sort of internal DSP, but as you say, it's limited by a built in EQ curve and not adjustable.</p><p></p><p>Yeah, the stock EQ curve makes a lot of sense. I may have to break down and finally put in an aftermarket radio. I just really don't want to! But, it may be what has to happen!</p><p></p><p>I like the idea of an external signal processor. If that would work. And that would be something that would connect to the high level outputs I assume?</p><p></p><p>EDIT: Did some googling, and it looks like Rockford Fosgate makes one that I MIGHT be able to fit inside the fairing, that would be plug and play with my current amp.</p><p></p><p>EDIT2: No, that probably won't work; all it advertises is being able to "boost" treble and bass. That's not my issue right? I need something that can go frequency by frequency and drawn down the ones that are too hot, right?</p><p></p><p>Here's a shot of the amp installed, to give you an idea of how much room I have to work with.</p><p></p><p>Ignore the sloppy wiring, I was just zip-tying stuff out of the way while working on other things. Notably, the power wires and not running WITH the speaker wires. Power runs directly down the center, speaker wires run on each side.</p><p></p><p><img src="https://lh3.googleusercontent.com/-C8Cq0PegpfQ/WV0OvDByITI/AAAAAAAABjo/6KxRq8X2KH43g1XERT-daXTGhyznpgmYQCJoC/w848-h636-n/IMG_4091.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Romans5.8, post: 8583731, member: 645790"] The conversion happens at the source of transmission. FM and AM are analogue signals. So is an RCA line level audio signal (which is what comes out of the 30 pin connector; hence the DAC in the adapter. It's essentially a mini RCA connection, which is analogue as well). It may have a DAC, but no, none of those signals are digital. They just aren't. I'm not an audio geek per se but I am an electronics geek. In my livingroom is a gorgeous old AM/FM radio (that supports quadriphonic FM! Which is now defunct) that most certainly contains no DAC, I've restored it myself. It's an entirely analog radio. It supports Vinyl, AM, FM/FM Stereo/FM Quadrophonic; all of which are analog. CD, mp3, aac (and other lossless formats), HD Radio, XM/Sirius are all digital. AM/FM, RCA (line level), vinyl, most tape formats (except a select few digital tape formats; but compact cassettes and 8 tracks are both analog), etc are all analog. The audio is stored in an analog format, not in bits which need to be converter to waveforms. The FM transmitter is transmitting waveforms directly to the radio. If it was transmitting bits, (which would need converting), then it would go in and out like sattelite radio; not get 'fuzzy'. Again, not to say it doesn't have a DAC in it somewhere (I'm not sure what for, though). But the signals it's receiving are [B]definitely[/B] analog signals. My assumption that it has no DAC comes from the fact that it CAN'T accept any sort of digital connection, like being able to connect with an iPod digitally, but instead relies on the iPod (or iPhones) built in DAC and receives an analog signal from that. You might be thinking of a DSP (Digital Signal Processor). That it might, in fact, have. Something that digitally adjusts the incoming analog signals (including a signal FROM a DAC, it would be connected to it's analog output pins). It very well may use some sort of internal DSP, but as you say, it's limited by a built in EQ curve and not adjustable. Yeah, the stock EQ curve makes a lot of sense. I may have to break down and finally put in an aftermarket radio. I just really don't want to! But, it may be what has to happen! I like the idea of an external signal processor. If that would work. And that would be something that would connect to the high level outputs I assume? EDIT: Did some googling, and it looks like Rockford Fosgate makes one that I MIGHT be able to fit inside the fairing, that would be plug and play with my current amp. EDIT2: No, that probably won't work; all it advertises is being able to "boost" treble and bass. That's not my issue right? I need something that can go frequency by frequency and drawn down the ones that are too hot, right? Here's a shot of the amp installed, to give you an idea of how much room I have to work with. Ignore the sloppy wiring, I was just zip-tying stuff out of the way while working on other things. Notably, the power wires and not running WITH the speaker wires. Power runs directly down the center, speaker wires run on each side. [IMG]https://lh3.googleusercontent.com/-C8Cq0PegpfQ/WV0OvDByITI/AAAAAAAABjo/6KxRq8X2KH43g1XERT-daXTGhyznpgmYQCJoC/w848-h636-n/IMG_4091.JPG[/IMG] [/QUOTE]
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