Yamaha CR-640 vs R-N301 vs Sansui 7070

[@adaboy4z]

I just finished refreshing a Yamaha CR-2040 with bulbs and thorough clean. It was an estate sale find. It has now replaced my Yamaha R-N303. The glow and beautiful wood cabinet can't be beat.

[@ACBMemphis]

Yes, these older receivers look great and you can tell that the companies used to put a lot more effort into the style of these receivers... Thanks for the comment!

[@thedude3160]

I enjoyed this video. I am in the process of buying a Yamaha 640 and own a Sansui 7070, which I love. So thank you for making this!

[@ACBMemphis]

Thanks for watching! Old receivers from this era sound great. If money were no object, a Sansui G-33000 would be on my shopping list, but those are way too expensive.

[@thedude3160]

ACBMemphis I agree. I’m all about vintage stereo! I have the 8080, which is a beast, and recently picked up a Sansui AU&TU999 which is surprisingly sweet! Did you get rid of this Yamaha? New subscriber! Keep up the great videos.

[@ACBMemphis]

@@thedude3160 Yep I still have the CR-640 and use it all the time... Thanks!

[@vasiliuslv]

lovely video and what a great job you did! but can you please tell us how did you get your hands on the connection drawing of the lamps? thanks in advance :)

[@ACBMemphis]

Thank you. The connection drawing is available online: hifiengine.com is a good source for manuals and schematics. www.hifiengine.com/manual_library/yamaha/cr-640.shtml

[@ItsaRomethingeveryday]

Really like the stereos the older ones like them are the best ones I think, we have a 1977 pioneer8500 series 2 amplifier that is in perfect shape untouched all original parts I received as thanks for helping a friend clean his garage one day,

[@mistert7958]

Do the vids when the kid is at school...and give him a kleenex!

[@Sword-of-Christ-Ministries]

It was an absolute delight listening to you and the boy described these stereos at the first half of this it was like listening to Norm Macdonald work with a little kid on a stereo project and it was quite funny but it was very charming. Keep up the good work.

[@ACBMemphis]

Thanks for watching, and for those very kind words!

[@mondoenterprises6710]

I didn't know The Big Short author Michael Lewis was into vintage hifi! : )

[@Iatolaazzahola]

Nice video. Did I miss the part where you got the protection relay to clicking and the receiver begins to work again? I have the exact same problem with my CR-640. Can you walk me through what it took to get it to start back up? Thanks ACBMemphis.

[@ACBMemphis]

I didn't record that part... Using a digital voltmeter, I put the black/negative on ground, and measured the voltage at 2 specific test points on the board near the protection relay. (I believe these were labeled TR and TL). I had to adjust some very sensitive pots for zero. You can use Google to find the service manual and details for this procedure. Also, the test points were close to other wires so I suggest covering most of the test probe except for the tip with electrical tape so nothing shorts... A couple of good sites to search for the CR-640 are "audiokarma.org" and "hifiengine.com" ...

[@claudiocruzat4624]

The only problem was that the white noise dissapeared between stations. It is amazing. The sansui is amazing too.

[@paulespino6462]

thanks for the vid! I have a CR840 and would like to upgrade the bulbs to LED. Would you happen to remember the value of the resistor you used on the 4 LEDs on top, the 2 for the meters and the last one for the tuner dial?

[@ACBMemphis]

Thanks for watching. I believe it was a 2.2K resistor. If you do a Google search for "yamaha receiver bulb to led conversion resistor" there is a forum post where someone said they use a 2.4K resistor on a CR-420. Good luck!

[@nkohanowski]

@@ACBMemphis I hate to ask but I so want to get the exact result with led conversion. Looks like clear water green led's 5mm 12V or could you post the part number and source? And great video!

[@ACBMemphis]

@@nkohanowski Thanks for watching. Yes they are 5mm. It was a tight fit, mostly because of the size of the wires on the LED but you can make it work. They are still on sale $7.98 for 100. Here is the Amazon link: a.co/d/buI1KyW

[@ThejasonJaw5442]

Very cool tuner shift knobs remind me of the Marantz stereo tuner one of my favorites I remember big cabinet tv by RCA you had in the living room, I sent smoke the DirecTV

[@chais1111]

unfair comparaison. I have a yamaha CA800 amplifier that would compare more to the 7070. Great to have your son involved into this father and son time, awesome

[@ACBMemphis]

Thanks! I just looked up CA 800 and it looks nice!

[@chais1111]

@@ACBMemphis that 7070 has a great thick, warm sound. i've got the 6060 and love the sound but look wise i'm not a big fan of Sansui. I think Marantz of that era are the best looking ones and also the quality of the product is top notch.

[@Danteelias08]

Sansui has three levels of equalization: bass, midrange and treble...and more power... and its loudness adjust is exact ... the 7070 is legendary.

[@ACBMemphis]

Yes, since making this video 5 years ago I have really grown to like the Sansui a lot, and still listen to it every day. Thanks for the comment!

[@opiestanborough4774]

not a fan of the led... but better than nothing... ide tru wrapping the bulbs with something...clear tapeÉ they shouldnt get hot.... just somthing to take the edge off.....

[@ibleebinU]

I personally think the Sansui stomps the Yamaha.

[@swcrites]

great video. i had a cr-840 that i loved, but one day the relay wouldnt click and in my frustration and inexperience, i think i made it worse in my troubleshooting. eventually i traded it for a small harman/kardon amp. man, i miss my old yamaha though. anyways, great vid. cute kid. ill drop a like :)

[@claudiocruzat4624]

I had this..its the best machine made in japan. Remember the gigantic sony "carbon" speakers. The technics tape playing master of puppets by metallica. Insane sound. And it was a cassette xD. Def leppard hysteria ...vinyl..that was ridiculously clear. Never listened something better.

[@daithigoilin3401]

8

[@SinnerSince1962]

LED's are too "hot' in my opinion. I prefer the original lamps with the condoms on them. BTW, the Sansui, as proven by the increase in pricing, is a much better unit. The 40 series had the now unobtainium pre-driver chips. That has tanked the value of these machines, unfortunately. Those were made by Sanyo specifically for Yamaha, and are proprietary. A dead unit is now a paperweight.

[@ACBMemphis]

Yes, I started listening to the Sansui almost daily a few years back and really like it... Thanks for the comment!

[@SinnerSince1962]

@@ACBMemphis I've also heard, but can't verify, that these units attract spiders.... :)