• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

JVC JR-S600 Receiver

arts

Addicted Member
We all have certain pieces of equipment in our memories that we always wanted and dreamed about, but, at the time, were out of reach. And in the pre-internet days, almost always impossible to find used. And even with the internet, some are still elusive. For me it was always JVC's flagship receiver, the JR-S600.

I never had any interest in Kenwood, Pioneer or Marantz. Too much wood (and usually fake wood) or even worse, Mactac on a metal cover. Nope, those all reminded me of everybody's parents living rooms...Good grief, they all looked like miniaturized Fleetwood or Electrohome consoles. Yuck.

I've never forgotten when the JVC JR-S series of receivers first hit the shelves in the late seventies; if some starship came equipped with a sound system, these would've been it.
180WPC into 4Ω? Yikes.

Black and silver faceplate, the blue meters (believe me, McIntosh was NOT the well-known household name it is today) and those side panels that look like they came out of a machine shop. Wow.
And that's before you even pop the cover; huge potted toroidal power transformer (virtually unheard of in the seventies), multiple regulated power supplies, twin heatsinks with four TO-3's per, filter caps the size of beer cans, FET switching for the twin phono inputs, and enough circuit boards for a cruise missile guidance system. And packed in just as tight. This was nerd heaven!

Last weekend I lucked into a near-mint, single owner JR-S600. Over many decades, I have had every single model of this series (and the subsequent JR-Sx01 types) cross my bench, always for minor issues. But I have never encountered the first-edition flagship 600. Unbelievable:)

After I deal with cleaning all of the many intermittent sliders and switches, and give the insides a good vacuuming with the old 3M, I'll see where things stand. OMG, there is a LOT of stuff in here..
Oh, did I mention that this unit spent it's entire life in a non-smoking/no pets home? Again, unbelievable!DSCF3407.JPGDSCF3405.JPGDSCF3408.JPG
 
Register to hide this ad
Nice. I repaired one not too long ago. Needed 2 new input caps on the preamp. Quite the beast . Surely doesn't get the respect of the other big brands
 
Nice. I picked up a JR-S501 back in January and am looking forward to bringing it back to life. Looks like just a small amount of corrosion cleanup/repair from 2 leaking caps at first glance. Just need to get my shop back up and running after our recent move. . .
 
Last edited:
Yikes. Lots components and capacitors in that one. I count 7 potentiometers on one board alone in there. Nice looking toroidal trans though
 
It really is quite the assembly. The oval circuit board beside the transformer is soldered to the filter caps, and contains the regulated power supply for the equalizer.
Directly beside that, there are two more boards that are mounted to a removable sub-chassis. Lifting that tray out of the way gives access to the tuner section underneath.
 
I've got one of these in my garage that came out of a wood shop about 25 years ago, already in pretty rough condition. I used in my garage for about 10 years before it dropped a channel. I never even cracked it open to evaluated it; since I had several other amps and a lot of other priorities at the time it got shelved, but I think of it from time to time and just encountered it yesterday when I was moving stuff around. I've been doing a lot of electronic repair lately so am considering diving into it but frankly I don't really need it at this time and it's in rough enough condition cosmetically that I probably can't get much for it, so might consider parting it out. Seems like this is a good place to mention that.
 
I used to have one of these, I replaced the plastic "fake heatsink" styled side panels with clean wooden ones tinted dark brown and IMO if it came out of the factory that way, it wouldn't have gone under the radar for as long as it did :) Apart from the (IMO) gaudy side panels, the look is really quite clean and timeless. The meters are more turqoise than blue with the lights on.

I remember it sounding very good with a great phono stage. It was maybe just a bit rough around the edges and a bit noisy (hiss). I was tempted to try and upgrade some parts (resistors, caps, transistors) and I'd guess some of the small signal transistors were beginning to show their age, but the complexity made me shy away from that for better or worse. The transformer is HUGE, it looks big on pictures but even then seeing it in person it looks even bigger. If it was an integrated instead of a receiver I'd probably still have it. The equalizer was good but it could've used a bypass switch, which is something I think they added for mkII but the mkI didn't have it.
 
I picked one up today....I am not an audiofile, but rather a nostalgic enthusiast. Recently one of my best friends died.....he and I used to listen to music together, buy albums, and we shopped for and bought our stereo equipment at Hi Fi Buys in Nashville together when we were in high school. We both bought primarily JVC, because it was what we could afford and it looked pretty cool. I had an R-k10 and he had an R-k20 receiver.

Recently, I began cobbling together my exact system after figuring out what I had. Watching Ebay, I found it all, except the speakers, and I bought some new Polk Audio XT70s rather than dealing with ebay and facebook for giant 80s era floor speakers. I picked up a JVC R-K10, a JVC L-A31 turntable (mint in the box!), and a Technics M226 cassette deck. The receiver got damaged in shipping, cosmetically anyway. I cleaned it up, tested what i was able to using AI and a multimeter, and replaced the burned out bulb. The stereo would not lock in on FM, but only plays in mono. Based on what I can figure out, the FM discriminator is frozen and I can't adjust it, which prevents the stereo from locking. I may keep it as a "display piece", or I may list it on Ebay- I hate to throw it away.

I stated poking around and reading about better JVC receivers from that era, and I found an S77 and bought it, cleaned it up, and it is practically mint. But I had my eye on a JR-S600 Mark II, and low and behold, one popped up on Facebook about 100 miles from my house. I went today to check it out, and I bought it for what I thought was a good price. I cleaned it up good, checked the DC offset (1.8-2.6) and have it fired up. A couple of indicator lights are out, and it appears the dial lights are out. The lights are a bugger to replace from what I have read on here, but I may tackle it at some point. I have not even cracked the lid off yet to see what it looks like inside.

Anyway, that's what brought me here to Audiokarma, and it's been an interesting few weeks!
 

Attachments

  • IMG_3936.jpeg
    IMG_3936.jpeg
    95.3 KB · Views: 6
  • IMG_3935.jpeg
    IMG_3935.jpeg
    67.5 KB · Views: 6
  • IMG_3954.jpeg
    IMG_3954.jpeg
    99 KB · Views: 6
I picked one up today....I am not an audiofile, but rather a nostalgic enthusiast. Recently one of my best friends died.....he and I used to listen to music together, buy albums, and we shopped for and bought our stereo equipment at Hi Fi Buys in Nashville together when we were in high school. We both bought primarily JVC, because it was what we could afford and it looked pretty cool. I had an R-k10 and he had an R-k20 receiver.

Recently, I began cobbling together my exact system after figuring out what I had. Watching Ebay, I found it all, except the speakers, and I bought some new Polk Audio XT70s rather than dealing with ebay and facebook for giant 80s era floor speakers. I picked up a JVC R-K10, a JVC L-A31 turntable (mint in the box!), and a Technics M226 cassette deck. The receiver got damaged in shipping, cosmetically anyway. I cleaned it up, tested what i was able to using AI and a multimeter, and replaced the burned out bulb. The stereo would not lock in on FM, but only plays in mono. Based on what I can figure out, the FM discriminator is frozen and I can't adjust it, which prevents the stereo from locking. I may keep it as a "display piece", or I may list it on Ebay- I hate to throw it away.

I stated poking around and reading about better JVC receivers from that era, and I found an S77 and bought it, cleaned it up, and it is practically mint. But I had my eye on a JR-S600 Mark II, and low and behold, one popped up on Facebook about 100 miles from my house. I went today to check it out, and I bought it for what I thought was a good price. I cleaned it up good, checked the DC offset (1.8-2.6) and have it fired up. A couple of indicator lights are out, and it appears the dial lights are out. The lights are a bugger to replace from what I have read on here, but I may tackle it at some point. I have not even cracked the lid off yet to see what it looks like inside.

Anyway, that's what brought me here to Audiokarma, and it's been an interesting few weeks!

Just a word of warning re the S600; that slider volume control is really easy to "oopsie" if you're not paying attention.
And this thing pushes a LOT of horsepower, so any volume control mishaps may result in smoking tweeters and your woofers lying on the floor :oops:
 
Just a word of warning re the S600; that slider volume control is really easy to "oopsie" if you're not paying attention.
And this thing pushes a LOT of horsepower, so any volume control mishaps may result in smoking tweeters and your woofers lying on the floor :oops:
Indeed, and thank you!
 
Back
Top Bottom