Looks like what I use!It is trivial.
Get one of these:
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Random internet image -- you can get such a gizmo from Amazon or... pretty much anyplace that sells electronic gee-gaws and gimcrack.
Here's a not entirely randomexample from that rainforest-themed company:
You have (i.e., you will have) two volume controls you can adjust -- the one on the HD radio, and the one on your receiver. Try 'em both. Don't start with the output of the radio too high, but don't hesitate to turn it up if you need more signal in to your Sony receiver. I won't say you can't do any harm... but I will say that you'll have to work at it to do any harm!
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Does anyone else like FM?
- Thread starter Mark1
- Start date
HaveMeterWillTravel
Senior Member
Any idea why the AEP models would have output RC snubbers but not US/American models?
Unusual... I have no idea.
I have a account at HiFi Engine and there are many service manuals there. Some time ago the website stopped accepting new accounts but old accounts remain active like mine. I suggest you attempt to create a account and see if they are permitting new members.
- Thread Starter
- #485
That site tells you on one page more than any retailer or even Sony owner's manual. Although I can barely read and understand direct current car schematics where most of my knowledge is from
.I don't think my Sony receiver specs are too bad for entry level receiver still going strong that I think I paid about $150 new. I thought I got it before around 2005 but the serial number starts with a 9 so 2009 model year, which could be but it says they were only made to 2008. When I first got it, I wasn't sure if it sounded as good as my old receiver which I can't remember what that was now Panasonic, Kenwood maybe a Realistic even lol, let alone a Yamaha natural sound I had. But now I think this Sony does sound as good with JBL speakers and I had swapped speakers. I seem to have had a lot of audio equipment that seems to have just disappeared over the years and are now a faint memory
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Car amps and home amps have some significant variations. But they amplify audio at the end of the day.I can barely read and understand direct current car schematics where most of my knowledge is from
If you understand one then the other can be understood too.- Thread Starter
- #487
I agree. I wished I could get a home stereo user control like a car radios. I have some experience with car audio, but what I meant is most of my knowledge or expertise is automotive mechanics in general, with electrical systems being my weakness, and I can barely read schematics , understand and work on DC electrical systemsCar amps and home amps have some significant variations. But they amplify audio at the end of the day.
. Although car electrical today is largely serial data and networked.I don't bother with car audio anymore, just home audio. The most recent time, amps and subwoofer were not correctly installed by an installer on my brothers car and had serious audio problems. So we finally took all the aftermarket equipment out and reconnected the factory amp and it really sounds better anyway. The OE amp is 8 channel with active crossovers and compared to in the past not so bad compared to the average aftermarket amp.
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Some schematics are easy to read and then some are like... they suck.
Sony has very good schematics if you ever want to pick one up and delve into them.
CKUA is a donation funded station out of Edmonton, Alberta, Canada. Amazing playlist. No annoying ads. Also available online. https://ckua.com/
- Thread Starter
- #490
The Sony schematic did look good compared to most automotive hieroglyphics schematics. But I'd still have trouble understanding the circuit. I need a schematic for Dummies with an explanation manual which kind of defeats the purpose of a schematicSome schematics are easy to read and then some are like... they suck.
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I have the schematics for both your receiver and the radio you have. They are Sony literature are are tip top quality and make great sense once one wheels through them a bit and sees how a proper schematic is made. Sony service literature is a standard in the industry known for making sense and being attractive to look at to. If you want them private your email and I'll send them along.The Sony schematic did look good compared to most automotive hieroglyphics schematics. But I'd still have trouble understanding the circuit. I need a schematic for Dummies with an explanation manual which kind of defeats the purpose of a schematic
- Thread Starter
- #492
Just curious, so the headphones output voltage of the Sony XDR-S3HD would be:
Power 2.8 W +2.8W https://www.sony.com/electronics/support/res/manuals/3208/32081691M.pdf
- Power (P) = 2.8 watts @ 4 ohms 10% distortion.
- Resistance (R) = 100 ohm
- V = (2.8 watts / V) * 100 ohms
- (V) = 0.56 volts
For the receiver:
P = (0.5 volts)^2 / 10,000 ohms = 0.25 volts^2 / 10,000 ohms = 0.00025 watts. That seems really low. I'm trying to understand how the receiver line out can output 0.500 V through 10k Ohms.
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HaveMeterWillTravel
Senior Member
Maybe they posted a Carver schematic and got sued six ways to Sunday?
I miss the days of HP and their wonderful manuals for test equipment. Actual theory of knowledge, parts list, etc.
And if there was a button, what it actually did was explained.
Now n days? "Button X" "Description: Pressing Button X does X"
- Thread Starter
- #494
To measure the headphone jack output voltage and impedance, wouldn't one with a DMM measure voltage with the radio at full volume and to measure impedance at minimum volume? Although, Doodski already figured out the impedance. I don't know if EJ3 would be interested in doing that sometime or maybe sending radio to Amir for more testing .
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Using a variable R load resister at the output and a oscilloscope/voltmeter to meter the circuitry increase the R load value till the voltage goes to 1/2 and then that is the output resistance.
How to measure output impedance?
What's the best way to measure output impedance of a commercially made electronics device? In this case, I want to measure the output impedance of my amp RCA jacks, but I might want to do it for my old headphone amp, too. If I have a DMM, is that enough? Or do I need more equipment? And...
www.audiosciencereview.com
- Thread Starter
- #496
It's a lot more complicated than I thought.Using a variable R load resister at the output and a oscilloscope/voltmeter to meter the circuitry increase the R load value till the voltage goes to 1/2 and then that is the output resistance.
How to measure output impedance?
What's the best way to measure output impedance of a commercially made electronics device? In this case, I want to measure the output impedance of my amp RCA jacks, but I might want to do it for my old headphone amp, too. If I have a DMM, is that enough? Or do I need more equipment? And...
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Why are you so concerned about the measurement, @Mark1? If you want to interface a radio to your receiver via the headphone jack, it will work.
I can make a video to show you if you want!
You can test it yourself before you spring for a Sony HD table radio. All you need is a cable such as mentioned in an earlier post and absolutely any audio source component (e.g., an old Discman portable player) with a headphone output.
a radio to your receiver via the headphone jack, it will work.I can make a video to show you if you want!
You can test it yourself before you spring for a Sony HD table radio. All you need is a cable such as mentioned in an earlier post and absolutely any audio source component (e.g., an old Discman portable player) with a headphone output.
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The little Discman-type player shown in the photo(s) below actually has both a headphone output (adjustable via the player's volume control) and a fixed, line level output. Both outputs are provided in the form of 3.5 mm stereo jacks (miniature stereo headphone-style jacks). I just hooked up the headphone output to the VCR 1 audio input (stereo pair RCA jacks) on the venerable Yamaha receiver seen in the photo below, using a cable like the one I mentioned in a previous post. In the photos below, I am playing a CD-R copy of the Rolling Stones' Let It Bleed through the Yamaha receiver and a pair of Polk Audio R200 'bookshelf' two-way loudspeakers. Sounds fine -- although, for now, you'll just have to take my word for it.
... and why, I hear you ask, do you have an old portable CD player hanging around, Mark?
Actually, I have a box full of them. In my defense, it's a small-ish box. There was a time that they showed up all of the time on the swap table at our erstwhile town dump (in Harvard, MA). I used to pick them up. They come in awfully handy for testing things in the shop or in the field. They also make swell party favors!
If I get a chance, I'll videotape (or capture via ADC) a snippet of audio and share the results here. I am spread a little thin today, so it won't be tonight, sorry!
Yamaha receiver seen in the photo below, using a cable like the one I mentioned in a previous post. In the photos below, I am playing a CD-R copy of the Rolling Stones' Let It Bleed through the Yamaha receiver and a pair of Polk Audio R200 'bookshelf' two-way loudspeakers. Sounds fine -- although, for now, you'll just have to take my word for it. ... and why, I hear you ask, do you have an old portable CD player hanging around, Mark?
Actually, I have a box full of them.
In my defense, it's a small-ish box. There was a time that they showed up all of the time on the swap table at our erstwhile town dump (in Harvard, MA). I used to pick them up. They come in awfully handy for testing things in the shop or in the field. They also make swell party favors! If I get a chance, I'll videotape (or capture via ADC) a snippet of audio and share the results here. I am spread a little thin today, so it won't be tonight, sorry!
- Thread Starter
- #499
Mostly just curious, my receiver line outputs are 10k Ohms and the radio headphone out is 600 ohms.. It seems like a big difference. But you know what thy say, curiosity killed the catWhy are you so concerned about the measurement, @Mark1? If you want to interface
I can make a video to show you if you want!
You can test it yourself before you spring for a Sony HD table radio. All you need is a cable such as mentioned in an earlier post and absolutely any audio source component (e.g., an old Discman portable player) with a headphone output.
.Yeah but that's probably a lot cleaner signal path than FM through a radio headphone outThe little Discman-type player shown in the photo(s) below actually has both a headphone output (adjustable via the player's volume control) and a fixed, line level output. Both outputs are provided in the form of 3.5 mm stereo jacks (miniature stereo headphone-style jacks). I just hooked up the headphone output to the VCR 1 audio input (stereo pair RCA jacks) on the venerable
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... and why, I hear you ask, do you have an old portable CD player hanging around, Mark?
Actually, I have a box full of them.
If I get a chance, I'll videotape (or capture via ADC) a snippet of audio and share the results here. I am spread a little thin today, so it won't be tonight, sorry!
. I'm mostly kidding. I believe you and EJ3 that the headphone out will work and sound fine. I did something similar when I was using a separate SiriusXM tuner connected to my Sony receiver through a line in and even through FM broadcast to my receiver tuner so I could switch between FM and XM with a preset button, and I couldn't really tell them difference in sound quality . It was kind of poor either way probably because home SXM tuners aren't very good and neither is the satellite signal bit rate. But the thing is I'm barely just satisfied with the fidelity of my FM through the receiver. I mean it's pretty good most of time but would like closer to CD quality, I'm trying to not go over to the dark side of digital streaming . I don't think I'd be content with anything short of an upgrade component tuner or all in one receiver.I don't think I have any working audio device with a headphone out besides my receiver itself right now, not even my laptop has one. I used to have a portable CD player and various other audio equipment, but it seems to have all disappeared. Which is strange since I don't usually get rid of equipment, but I did move a few years ago. I envy all the vintage audio equipment you have
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Lower is better. 10k Ohm is very very high and not really that good. It has to do with the operation of wanting a low output resistance to a high input resistance.Mostly just curious, my receiver line outputs are 10k Ohms and the radio headphone out is 600 ohms.. It seems like a big difference. But you know what thy say, curiosity killed the cat
