And I must know why Sony's use such a high line output impedance on what seems like competive audio equipment
. Copilot and Google AI answers seems too general and summarized. No, but seriously it doesn't matter because I never use my receivers audio outs. I tried to use a line out to my powered subwoofer and it provides plenty of volume regardless of impedance but no volume control and I can see now on the schematic you sent it bypasses the volume control.
It's a mystery actually. No reason to do it other than maybe they cheaped out on parts and the result is a high output impedance.And I must know why Sony's use such a high line output impedance on what seems like competive audio equipment
I'm having trouble following the schematic what inputs/outputs go and don't through the volume control and power amp. Anyway, I have a Sony AVR DE595 https://www.sony.com/electronics/support/res/manuals/4245/42453271M.pdfstill sitting in the box, but it has the same output impedance, tuner and other specs so it's not just the entry level like my DE197 that are like this. If Sony receivers are cheapen out maybe I should get a new Yamaha natural sound or maybe AVR to get better room correction and bass management features for the price.
The entry level Yamaha R-S202 receiver has a output impedance of 2.2k Ohms. Substantially lower and the headphone output impedance is a normal 470 Ohms.
Yeah that seems better. But the THD seemed a little high and the FM tuner sensitivity didn't seem like an improvement. I think the next Yamaha model up N303 has lower distortion, and maybe a better tuner along with wifi network streaming, or least the natural sound model does but it's $. Funny think is subout impedance on the Sony DE595 is 1k ohm. Probably the Sonys and the entry level Yamahas sound about the same not sure. Maybe I'd have to get a natural sound to really upgrade.
I would not worry about that. Mostly at this price range worry about dynamic power and low impedance drive. The R-N303 is discontinued.
It looks like the R-N303 it's still available https://usa.yamaha.com/products/audio_visual/hifi_components/r-n303/index.html. It's not a natural sound/top art, really just an entry level and has networking.
Nothing really specific besides improving sound quality generally, mostly chatting and learning. Originally I wanted to improve FM reception and sound but I don't think it's practically possible. Maybe a good vintage tuner would but it seems like my location has some interference issues.
What speakers are you using with this Sony and prospectively with a Yamaha?
JBL Northridge E30 on stands https://www.hifiengine.com/manual_library/jbl/e30.shtml and E150 powered subwoofer https://support.jbl.com/on/demandwa...THRIDGE E150P,NORTHRIDGE E250P^JBL^om^^^^.pdf
That should sound pretty good although upgrading to a entry level Yamaha will be fruitless and no effective change in sound quality will be realized. If you want to spend money buy better speakers and make sure to use PEQ.
Yeah I think they are good sounding speakers. I think you're right and probably the same for a midlevel Yamaha top art. Maybe a really good vintage tuner would improve FM sound or maybe I should add a wifi streamer to my Sony. If the Sony is on the cheap side it ,has lasted about 20 years and going, longer than any other receiver I've had.
Or connect a PC to the audio system and have full service from the internet.
Not unusual. Many amps/receivers last a long time.
I have sent my ADVENT 300, one of my APT/Holman Preamps, one of my NAD 2200's (There are reviews on these on this site) in.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
Yeah but without a streamer I would have to use the PC headphone out jack. I could also connect my smart tv to the receiver. I might try it, but I think I'd rather just use something like a WiiM and control streaming with my phone.
But I went through several receivers since the 1980s, they just worn out and quit working I played them so much. Could be an anomaly but just about every audio and electronic device I owned quit working except for my Sony stuff-Sony LED TV, VAIO laptop, camera, etc all over 20 years old and still work but are obsolete, except still using the receiver.
Results vary of course. I can't say much other than I provided Sony authorized service for ~15 years and everything I saw was broken somehow so the stuff does fail... Sony is good gear don't misunderstand me but electronics fail from all manufacturers.
