Yamaha CR series Recievers Pecking Order

[archie2]

I think the highest praise you can give a Yamaha is the fact that no one here AFAIK has ever said anything bad about their sound. To the learned, the absence of malice is very often a sign of respect.

Very true, my CR 2020 which has been brought up to spec. does not match well with my Boston Acoustics A150's so it sits on the sidelines. Pity as it is a classic.

 

[archie2]

Several of my friends are also Yamaha fans. They are always asking about what speakers they should try.

Thanks for the info!!!

Polk 10A's, 10B's, Polk 7B's are good choices.

 

[Acoustic]

Here's my CR-1000 I got from Merrylander last November. BTW... I use her daily and is working great!!

I've got her matched up with Polk RTA11T's I got from SheltieDave... great AK combo!

 

[Dark Knight]

Shes beautiful!!!!

DK

 

[EPI-Center]

wow that's a stunning pic. I just bought the 840 this morning, I owned this in the 80's brand new and left it in Cleveland years ago. It was switching on and off and I figured it was a goner. I'll be happy to have it back in the stable, although you guys have piqued my curiosity about the larger models.

 

[Balifly]

Yammy Fans !!!

Welcome back !!!

 

[gvalent]

Finally took the time to connect my CR-2040 to my NS-1000Ms.
I set the volume control at somewhere around the 2 mark.
The sound was sceaming LOUD and the meters were jumping around the 10W mark.
Is this normal or is something out of adjustment?
On my CX-2, I would have to turn the volume pot to almost vertical to get it this loud through my MX-2.

 

[merrylander]

My CR-2040 is at 1.25 on the volume and is plenty loud enough on my NS-690s. That is with a normal FM input, the Denon DL-160 in my PX-2 takes a little more drive.

 

[DragonMaster]

Absolutely normal. I set my CA-2010 at what would be 0.5 on the CR-2040 and that's a normal listening level.

 

[gvalent]

It frightened me !!

 

[backmd]

Well I guess the CR-3020 is the most desirable as long as you don't move it very often and have a strong rack to put it in. The three TOTL after that were the CR-1000, the CR-2020 and the CR-2040. I have all three and really cannot say that one is better than the other. The later models that were TOTL such as the R-2000, R100, R9 etc. all have thick film hybrids that are no longer available. I have two pristine R100s that make excellent doorstops as well as three CR-1040s and two CR-840 that may fall into that same category.

There is an A-1000 amp and an MX-600U amp on my bench at the moment whose transistor5s are due in today from B&D.

BTW Yamaha now has an online website where you can order parts and manuals, it is www.yamaha24x7.com as I just finished ordering the SM for the MX-600U.

Just out of curiosity; what made the R100s, CR1040s and CR 840s doorstops;
thick film hybrid outputs ie STKs that are no longer available?

 

[merrylander]

For the R-100 it is the STK8800 II and for the CR-n40s it is the pre-driver hybrid. Sanyo could make money by re-issuing any of these if I could get anyone there to read their mail.

 

[EPI-Center]

For the R-100 it is the STK8800 II and for the CR-n40s it is the pre-driver hybrid. Sanyo could make money by re-issuing any of these if I could get anyone there to read their mail.

so Rob are these the hybrids you were taking apart to see if you could replicate?

 

[merrylander]

Just the pre-driver one, replicating the STK8800 II wouuld be a bit difficult. I am waiting on oselectronics to send me more developer and PCBs

 

[AnalogDigit]

I came across an CR 820 for $40 at the flea market. It works great except the dial indicator light and meter lights are out and it needs a good cleaning. I love the sound on the Yamaha's.

 

[backmd]

For the R-100 it is the STK8800 II and for the CR-n40s it is the pre-driver hybrid. Sanyo could make money by re-issuing any of these if I could get anyone there to read their mail.

Seems like just about anything else Yamaha vintage solid state could be rebuilt with the utmost care and precision, along with a ton of patience.

 

[merrylander]

Those thick film hybrids were basically an early stage of surface mount technology. The major difference was that the transistor dies were planted directly on the substrate. I have never pulled the cover from a power amp to see how big the die is on the output pair. The caps look like present day SMT, the resistors were painted in place.