Thread: Sanyo dc j3k

Hi there I've just bought a SANYO DC J3K stereo receiver amp off eBay as i primarily liked the look and the price was right. I have a Marantz 1550 that i'm (slowly) restoring, and I needed something of approximately the same vintage to complement my set-up that wasn't going to cost a fortune. Its from a seller I've used before so I'm hopeful when they say its been tested as fully working. Depending on what I get in the post though I may need to tinker with it and so I went looking for a service manual, but no dice.

I know this model was was originally sold as part of a music system comprising of a turntable and speakers and I've located an owners manual, but that really is not much more than a, "here's where stuff gets plugged in..." type of guide, it has no specs regarding power output, frequency response etc., but it does have a circuit schematic?

Any additional intel on this model would be great.

Here's a picture I located on hifiengine of the same model (no official entry in their DB). I've contacted the poster of that image, but its from 8 years ago, so i'm not super hopeful for an answer.

Vintage 1973 Sanyo Amplifier and Tuner DC-J3K. PERFECT ....preview.jpg

thanks for reading, Mike

quick update, receiver arrived in very smart condition, just a couple of bulbs to replace (done). It's got 4 channel matrix stereo sound. I managed to measure 3w per channel output. It was at first a little disheartening as i was hoping for at least 10w per channel, i had no specs to manage my expectations. However I was pleasantly surprised that's its able to power my 40w 3 way floor speakers to an acceptable level for my small study. So given this is meant to be just my stand in receiver it will absolutely do for now. BTW once I had it open it appears to be very similar inside to the contemporary dxc units of the same era, so if i need to go tinkering further I think I can find enough material from those more well known units to help me. Going forwards I may try and locate some slightly better matched speakers, i'm not sure yet, it really depends on how long the Marantz is out of commission, but overall very happy with this little unit.
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Originally Posted by emtea01

quick update, receiver arrived in very smart condition, just a couple of bulbs to replace (done). It's got 4 channel matrix stereo sound. I managed to measure 3w per channel output. It was at first a little disheartening as i was hoping for at least 10w per channel, i had no specs to manage my expectations. However I was pleasantly surprised that's its able to power my 40w 3 way floor speakers to an acceptable level for my small study. So given this is meant to be just my stand in receiver it will absolutely do for now. BTW once I had it open it appears to be very similar inside to the contemporary dxc units of the same era, so if i need to go tinkering further I think I can find enough material from those more well known units to help me. Going forwards I may try and locate some slightly better matched speakers, i'm not sure yet, it really depends on how long the Marantz is out of commission, but overall very happy with this little unit.

Pardon me for bringing up an old topic, please tell me what kind of audio system with this amplifier you have finally assembled. Are you happy with the sound as a result?