littlebistro Posted April 16, 2013 Share Posted April 16, 2013 I have a Kenwood KR-5600, I'm having an issue where I only get sound out of the left speaker unless I choose mono. I don't wanna listen to my music that way. I've also noticed the sound gets quiet at certain points. any ideas? Quote Link to comment Share on other sites More sharing options...
ajxd Posted April 16, 2013 Share Posted April 16, 2013 Sounds like the right channel is dead. Quote Link to comment Share on other sites More sharing options...
ajxd Posted April 16, 2013 Share Posted April 16, 2013 Not much you can do. Certain amps can have a fuse linked to each channel... so check for an interal fuse? For the most part though... dead. Quote Link to comment Share on other sites More sharing options...
littlebistro Posted April 16, 2013 Author Share Posted April 16, 2013 My buddy seems to think its a dirty switch. He's gonna try and fix it for me, hopefully it works. Quote Link to comment Share on other sites More sharing options...
moodydan Posted April 16, 2013 Share Posted April 16, 2013 I would check the transistors on it, too, if it's not any fuses. Depending on what type of transistors you have, where they're located, etc, that may be more of a job than you want to get involved with. Quote Link to comment Share on other sites More sharing options...
slinch Posted April 16, 2013 Share Posted April 16, 2013 Since you get the sound by switching to mono, the output stages seem to be fine. So it's a problem with the preamp section. Did it happen recently? Does the sound go in and out if you wiggle te volume or source selector knobs a bit? If yes, most likely oxidation, loose connections or problematic resistors (volume knob - depends on the type). If not, does the sound go in and out with louder, bass heavy signal (this is dangerous to test if you don't know the limits of your equipment)? If yes, it's a bad capacitor/capacitors. They will have to be replaced. If not, it can be a dead capacitor, resistor, transistor or any combination of the above. Also, if the problem is only there with one input, it can be a problem with the input connector wiring, or the input selector. In any case, it has to be opened an serviced. If you know what you're doing you can open it and do it yourself, if not, don't. Quote Link to comment Share on other sites More sharing options...
littlebistro Posted April 17, 2013 Author Share Posted April 17, 2013 so.. I just realized I have 2 phono inputs on my receiver.. phono input 2 works just fine. Quote Link to comment Share on other sites More sharing options...
Questhate Posted May 19, 2013 Share Posted May 19, 2013 That's very weird, as I have a very similar problem. When playing mono LP's, my system sounds just fine. Things get wonky when I play stereo LP's. Any musician mic'd in the right channel will have very low volume and sound like he's playing from way back in the room. When I hit the "mono" button on my pre-amp, it sounds just fine and everything plays balanced. I thought it may be a mis-tracking issue with my turntable, but when I plug headphones into my preamp, everything sounds just fine and balanced. It's only when playing through speakers that the volume is low on one channel. I swapped channels from my preamp to power amp, and the right channel information (now playing in left channel) sounds just fine, but left channel information (playing in right channel) sounds low in the mix. Somehow, my preamp is having an issue with a stereo image on the right channel when played through my speakers. Input seems fine, since it sounds great out of my headphones. The power amp and speakers are fine, since it sounds just fine when I swap the channels, or play in mono. The issue is specifically with the preamp transmitting stereo information out of the speaker output it seems (that is somehow bypassed when switched to mono mode, or playing mono recordings). Anyone ever run into a similar problem? Quote Link to comment Share on other sites More sharing options...
xxmartinxx Posted May 19, 2013 Share Posted May 19, 2013 Sounds like a problem in the power amp. What kind of equipment are you using? Quote Link to comment Share on other sites More sharing options...
slinch Posted May 19, 2013 Share Posted May 19, 2013 There's absolutely no way that it's a problem with the power amp if it works perfectly fine when switched to mono. I'd have to see the pre-amp circuit to be able to give an estimate on where the problem might be, but it's best to get it serviced. It can be as simple as a bad solder on the output connector, but it's impossible to determine the source of the problem with the information given. Quote Link to comment Share on other sites More sharing options...
xxmartinxx Posted May 19, 2013 Share Posted May 19, 2013 There's absolutely no way that it's a problem with the power amp if it works perfectly fine when switched to mono. I'd have to see the pre-amp circuit to be able to give an estimate on where the problem might be, but it's best to get it serviced. It can be as simple as a bad solder on the output connector, but it's impossible to determine the source of the problem with the information given. It depends on how the preamp circuit works, but assuming the circuit mixes both left and right signals and then feeds that combined signal to both left and right sides of the power amp, there would be no way it would be an issue with the output connector feeding the power amp since that apparently works. The reality is, switching to mono probably just masks the problem that the output on the otherside is low because the other channel is overpowering it. So that would indicate that it's a problem with a bad op amp (assuming it's solid state) or a preamp tube (on the off chance it might be tube) in the preamp on that channel. But it works fine with headphones, which indicates that the preamp circuit is functioning properly (unless the headphone circuit is complete separate). But you're right, there isn't enough information. We don't even know anything about the system. Is it tube or solid state? Is it integrated or separates? Is he using an external headphone amp? Quote Link to comment Share on other sites More sharing options...
slinch Posted May 20, 2013 Share Posted May 20, 2013 Yeah you're right, the output connector is out of the question as well, don't know how I missed that. That just leaves the circuitry between after the headphone section and the channel mix section. No idea how that's even possible, all of the designs I've seen so far have the former after the latter. I haven't seen many, but still, now I'm intrigued and need to know! I doubt questhate is coming back though, so I'll be left wondering... Quote Link to comment Share on other sites More sharing options...
Questhate Posted May 20, 2013 Share Posted May 20, 2013 Thanks for the responses, guys. I had a buddy come over to take a look over the weekend. The issue ended up being with the power amp afterall. Apparently, the switch to put the amp into "bridge" mode got faulty somehow so the amp was running in "bridge mode" no matter what setting the switch was on. That explains why it sounded okay in mono mode, or with mono recordings, but any sort of stereo image was throwing things out of whack. Anyway, glad to have sorted that out. I was having a conniption for a minute there. Quote Link to comment Share on other sites More sharing options...
slinch Posted May 20, 2013 Share Posted May 20, 2013 Wow, I guess you learn something new every day. I never would have guessed that in a million years, since I've never seen an amp output to both speakers in bridged mode. Glad you got it sorted, and stick around Quote Link to comment Share on other sites More sharing options...
xxmartinxx Posted May 24, 2013 Share Posted May 24, 2013 There's absolutely no way that it's a problem with the power amp if it works perfectly fine when switched to mono. Hmmm... really? Quote Link to comment Share on other sites More sharing options...
slinch Posted May 24, 2013 Share Posted May 24, 2013 Hah, yeah, if you had told me that your power amp outputs to both speakers in bridge mono mode I'd call you a liar, but it seems everything is possible Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.