Yamaha CR-840

Oct 24th, 2016 Posted in CR-840, Yamaha | 2 Comments »

Yamaha CR-840

 

This ebony classic is the Yamaha CR-840 receiver. It was produced from 1979 to around 1981 and retailed for about $500. It was a mid range receiver in Yamaha's CR-XX40 lineup. It puts out 60 watts per channel into 8 ohms.

 

Yamaha CR-840 Left

 

The CR-840 has the big flat toggle switches as do many of the other Yamaha models. Overall it has a very nice sleek hi-tech look to it, though some think the Yamaha models look somewhat sterile.

 

Yamaha CR-840 Right

 

The CR-840 has a built-in AUTO-DX circuit that monitors the signal strength and amount of interference present.  If needed it will automatically switch to the DX Mode IF Stage to increase the selectivity to 83dB.

 

Yamaha CR-840 Meters

 

It also has continuously variable loudness control which means that the frequency balance and volume are adjusted simultaneously to compensate for the ear's insensitivity to high and low frequencies at low volume settings. So, a natural-sounding balance is maintained regardless of volume level. It weighs about 30 pounds and measures 20" x 6-9/16" x 15-1/4".

 

Yamaha CR-840 Inside

 

One problem with the Yamaha CR-840 is that it uses output modules rather than discrete output transistors. These modules have a tendency to overheat and die. Unfortunately, original replacements are difficult to find and newly made versions tend to be out of spec and perform erratically. It has been speculated that the Yamaha IG 02970 output module was in fact a rebadged Sanyo STK 0060-II or STK-0080-II. The STK-0080-II is fairly easy to find which would make repairing these units far easier.

 

Yamaha CR-840 Back

 

The Yamaha receivers have never garnered as much attention as the Pioneer and Marantz receivers but perform just as well.  They do emphasize a "Natural Sound" so they tend to have a more accurate representation of sound which some find to be a little harsh. Prices are rising for these receivers though - especially the higher end models. You can find a nice working version of the CR-840 for about $150 to $200.

 

YAMAHA CR 840 VINTAGE RECEIVER WORKS
YAMAHA CR 840 VINTAGE RECEIVER WORKS $85.00
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YAMAHA CR 840 RECEIVER FOR PARTS OR REPAIR
YAMAHA CR 840 RECEIVER FOR PARTS OR REPAIR $60.00
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YAMAHA BA075350 TUNING KNOB CR 640 CR 840 STEREO RECEIVER
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Sansui G-33000 Sells For Over $7000

Aug 29th, 2016 Posted in G-33000, Sansui | 2 Comments »

Sansui G-33000

 

This Sansui G-33000 receiver recently sold, on June 23, 2016, for $7101.00. These receivers are very rare and don't come up for sale very often. The seller describes it as being in excellent condition:

 

This unit has been tested and is fully functioning without any static or interference.  Physically it is in almost mint condition with the exception of a few minor scratches on top of the receiver, and a small scratch on the back of the am.

 

Another recent sale on July 12th, 2016 saw a Sansui G-33000 go for $6600.00.

 

Sansui G-33000 Sells

 

Here's what the seller had to say about that unit:

 

Everything tested and in working order. Sounds great. Would describe as very good condition, due to some nicks around top edges. Also, a few tiny nicks on glass (barely noticeable, unless your real close to unit).  $1800 spent on restoration 01/2013. Will include copies of receipt and work done. Will also include bolts for connecting preamp and amp together.

Was doing some further testing. A problem developed with left channel. Where it won't work all the time?

 

Obviously the left channel problem hurt the sale price a little bit.

A previous sale on December 17, of 2013 was for $7700.00 so prices have been pretty stable for the last few years.

Just as a comparison a couple G-22000 receivers sold recently as well. One for $3875.00 on July 29, 2016 and one for $3889.00 on July 1, 2016.

 

MINT and SERVICED SANSUI G 22000 RECEIVER 1
MINT and SERVICED SANSUI G 22000 RECEIVER 1 $6,500.00
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SANSUI G 22000 RECEIVER 2
SANSUI G 22000 RECEIVER 2 $4,500.00
Time Remaining: 27d 22h 45m
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Sansui G 901 professionally serviced all board RECAPPED excellent
Sansui G 901 professionally serviced all board RECAPPED  excellent $2,499.00
Time Remaining: 21d 12h 5m
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