Bypass amplifier?
I'm trying to install an aftermarket Sony CD receiver in my '05 Sonata.
There's power to the unit but no sound. Is there an amplifier on this car I need to bypass? If so, how? |
Re: Bypass amplifier?
mdufrene@cctimes.com wrote in news:1120772333.421907.71860
@g43g2000cwa.googlegroups.com: > I'm trying to install an aftermarket Sony CD receiver in my '05 Sonata. > There's power to the unit but no sound. Is there an amplifier on this > car I need to bypass? If so, how? > > Do you have the receiver hooked up with a hyundai wiring harness? |
Re: Bypass amplifier?
Yes, I plugged in the existing harness to the Hyundai harness that
Crutchfield supplied with the new head unit. I've read about bypassing the outboard amplifier but can't find any info on how to do it. There's power and a signal (can see the graphic eq on the unit moving) but no sound. |
Re: Bypass amplifier?
mdufrene@cctimes.com wrote in news:1120795574.527626.59950
@g44g2000cwa.googlegroups.com: > Yes, I plugged in the existing harness to the Hyundai harness that > Crutchfield supplied with the new head unit. I've read about bypassing > the outboard amplifier but can't find any info on how to do it. > > There's power and a signal (can see the graphic eq on the unit moving) > but no sound. > > Does the unit have an "aux" (or some other named) button that you accidentally pressed? Is your fader set incorrectly (feeding signals to non-existant speakers?) Wish I could help more but I'm one of those that needs to see something in person in order to fix it. That's why I'll never work a help-desk. |
Re: Bypass amplifier?
Can someone help with the amplifier question? Someone must have had
this same experience. |
Re: Bypass amplifier?
I think you're on the right track, but I unfortunately don't have the
answer; I'm not that knowledgeable about audio components. I think Richard Steinfeld may have some expertise in this area. Perhaps if he sees this he'll have something to offer. |
Re: Bypass amplifier?
hyundaitech wrote:
> I think you're on the right track, but I unfortunately don't have the > answer; I'm not that knowledgeable about audio components. > > I think Richard Steinfeld may have some expertise in this area. Perhaps > if he sees this he'll have something to offer. > I did. Note that my audio knowledge is in home and professional recording and broadcast systems. Car audio is quite specialized and has an almost unique ability to permanently shred the driver's hearing apparatus and create real drive-by misery to others. Having gotten this off my chest, I'll attempt an answser. From what you've written, I think that the place to zero in would be on what's sometimes called the "processor loops." In other words, there may be a signal out point and a mating signal in point. We're talking about four jacks here. Some car stereos have this ability -- the idea is to be able to run the audio from the head section (tuner, CD, etc.) out to an external processor device (originally, an outboard equalizer). The signal is then returned into the unit after processing to be fed into the stereo's power amplifier stages; from there, the amplified signals go out to the speakers. You may wonder why there could be connections for your unit since it's already got an equalizer. Well, some people might get talked into using an echo device -- which nobody ever needs because all recordings have exactly the desired amount of echo already and adding more is like (them metaphor in my mind is not suitable for children). Two methods of switching are used for such a "loop." One is to use one jumper cable permanently attached between the jacks for each channel. The other is via a digital switch in the receiver. Since it's 2005, I suggest reading the instructions carefully to see if you've just gotten a menu selection mis-set. And, yeah: some of Sony's instructions can be the worst Japlish ever conceived -- complete with insane names for functions and explanations that never made sense in the original Japanese in the first place (My Sony digital camera has a "sports lesson" mode!!). Another possible point of signal interception may be in order to accomodate external crossover networks, "subwoofer" amplifiers, etc., etc. So, I recommend putting this thing on your workbench, connecting it to a 12v battery and a pair of speakers, and while reading the manual, try slogging through the menus. I think that this is going to work. You should have an antenna to test the FM (a short wire will do if you're in an urban area)and a CD for raw sound. The reason for doing this out of the car is to see if the unit is, indeed, working OK. I'm guessing about your unit totally, so I really don't know what you've got. But if you get sound on your workbench, this eliminates the stereo itself as the source of the problem. For speakers on the workbench, you can use just about any speaker ever made. Home speakers are fine. You'll just get less sound from them. You won't damage the car stereo using them. However, whatever you do, do not short circuit the speaker wires together -- even one strand of the wire touching the other polarity can instantly fry your output ICs. Always keep in mind that in a car, an honest 5 watts is a hell of a lot of power! 15 watts will be across the threshold of pain. And it doesn't make sense to spend lots of bucks on car stereo because you can't hear the quality over the road noise. In other words, I believe in keeping car sound systems really simple and save the money for the good stuff at home. Another option that occurred to me is that your stereo may just be what's called a "head" unit -- in other words, the equivalent of what in high-end home audio has been referred to as a "tuner-preamp." In this case, there's no speaker power at all -- your unit is intended to work into a separate amplifier in order to drive the speakers. Hmmm. You did use the phrase "head unit," didn't you? If so, you _must_ use this with an external amplifier. A low-powered one should do nicely. Further, I really doubt that Hyundai put a separate head unit and power amp in any car. Why bother? It's not needed in any car. So, I'll assume that the original factory stereo was the traditional all-in-one box with speaker lines coming out. In other words, there's never been an OE amp in your car to bypass. Perhaps I'm wrong and somebody else can correct me here. But if I were Hyundai, I sure wouldn't waste money on this extravagance. Finally, if you're not sure about what you're doing, you may want to hire an installer to get everything right. As I said above, car audio has always been somewhat specialized. I was just inside an old Motorola AM-FM car radio that my friend bought on eBay for his 70s Mopar muscle car -- he paid big bucks for the thing. I did some preventive servicing on it for him, and I had to marvel at the uniqueness of what I found inside it, and also the excellent reception and decent sound, still after all these years. Impressive. Richard |
Re: Bypass amplifier?
from what i heard thre is an amp in sonatas in the trunk behind the
liner unplug it then run wires straight from your stereo or re- route then..... |
Re: Bypass amplifier?
beto1217 wrote:
> from what i heard thre is an amp in sonatas in the trunk behind the > liner unplug it then run wires straight from your stereo or re- route > then..... > I can't talk about the particular year, but I have the highest-cost 2000 Sonata and I can assure you that there is no separate amplifier in it. Richard |
Re: Re: Bypass amplifier?
"" wrote:
> beto1217 wrote: > > from what i heard thre is an amp in sonatas in the trunk > behind the > > liner unplug it then run wires straight from your stereo or > re- route > > then..... > > > I can't talk about the particular year, but I have the > highest-cost 2000 > Sonata and I can assure you that there is no separate > amplifier in it. > > Richard I also wonder about this. I hooked up my kenwood head unit in my 04 Sonata and I get power and no sound. Can anyone confirm for sure that there is some kind of external device. Also, do you need to use the "Power control wire" from your head unit? Any help at all would be appreciated. -- Posted using the http://www.autoforumz.com interface, at author's request Articles individually checked for conformance to usenet standards Topic URL: http://www.autoforumz.com/Hyundai-By...ict127924.html Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=633554 |
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